Reduction distillation furnace for producing titanium sponge with high quality and higher than 20 tons

Abstract

The utility model relates to a reduction distillation furnace for producing titanium sponge with high quality and more than 20 tons. And high-quality and high-efficiency production is realized. An electric heating furnace adopts a vacuum jacket heat preservation furnace shell and a frustum reactor of 20 tons and more than 20 tons, each reactor adopts a radiator with two hollow ends, a strong-support anti-deformation sieve plate and an anti-deformation radiating large cover, and an anti-deformation passage heater with an automatic unblocking machine is arranged between the reactors. And the cooling medium leading-in pipeline and the cooling medium leading-out pipeline of the large anti-deformation heat dissipation cover are communicated with each other or are communicated with each other through the heat exchange ball body to downwards extend into the reactor. According to the radiator with the two hollow ends, multiple layers of through holes distributed at intervals are formed in the upper portion and the lower portion of a frustum cylinder with a lower opening respectively. The method has the advantage that high-quality and high-efficiency production of titanium sponge of 20 tons or above can be realized.

Description

Technical Field

[0001] The utility model relates to a titanium sponge reduction and distillation furnace, in particular to a high-quality and high-efficiency production titanium sponge reduction and distillation furnace with a capacity of 20 tons or more. Background Art

[0002] Titanium sponge is an important raw material in the titanium industry and is widely used in fields such as aviation, aerospace, chemical industry, petroleum, and medicine. With the development of technology, in the process of titanium sponge production, the requirements for the production capacity and efficiency of titanium sponge are getting higher and higher, especially the demand for energy-saving and high-efficiency production of titanium sponge is increasing. There are two types of stilling and distilling furnace technologies: Type I and inverted U-shaped. Currently, the countries using Type I furnace technology are the Commonwealth of Independent States (Russia, Kazakhstan) and some Chinese manufacturers. The single-furnace production capacity of the stilling and distilling furnaces in the Commonwealth of Independent States is 4 tons / furnace, and in China, there are 3 tons / furnace, 4 tons / furnace, 5 tons / furnace, and 7.5 tons / furnace. The countries using inverted U-shaped furnace technology are the United States, Japan, and China. The single-furnace production capacity of Japan is 7 - 12 tons / furnace, mainly 10 tons / furnace; that of the United States is 10 tons / furnace; and that of China is 5 - 16 tons / furnace, mainly 5 tons / furnace. Moreover, in domestic and foreign titanium sponge full-process production enterprises, the magnesium electrolysis section and the reduction and distillation section are in a separated state, resulting in high construction cost investment and long material transportation distance.

[0003] In addition, the current methods for producing titanium sponge using 10-ton furnaces and furnaces with a capacity of less than 10 tons in the titanium sponge industry have problems such as large land use, high investment, and high energy consumption. (In the same industry, using reactors and furnaces with a capacity of more than 7 tons to produce titanium sponge results in denser products, but there are hard cores in the middle of some titanium ingots. In 2019, an enterprise in China invented and produced a 7.5-ton titanium sponge ingot and won the second prize of metallurgical science and technology progress in a certain province.) There are also many enterprises that have achieved a single-furnace production capacity of 10 tons or 12 tons, but the hard cores in the middle seriously affect the quality, so they have to go back to using 5-ton or smaller single-furnace production of titanium sponge, using an ejector to take out the titanium ingot, manually clearing the blockage of the T-shaped pipe, and manually cleaning the titanium on the wall. This method has problems such as large land occupation, high investment, high fixed cost per ton of titanium sponge, high energy consumption, low excellent product rate of quality, extremely high labor intensity! Extremely poor working environment! Extremely low working efficiency! Therefore, it is of great significance to research and invent large-scale equipment such as energy-saving and low-carbon production titanium sponge reduction and distillation furnaces, reactors, etc. with a capacity of 20 tons or more, as well as high-quality and low-cost production methods for titanium sponge. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the above defects of the prior art and provide a high-quality and high-efficiency production titanium sponge reduction and distillation furnace with a capacity of 20 tons or more.

[0005] To achieve the above-mentioned purpose, the utility model is a high-quality and efficient electric heating furnace for producing sponge titanium reduction distillation furnace of 20 tons and above. The special feature is that it adopts a vacuum jacketed insulation furnace shell and a 20-ton and above conical reactor. The reactor adopts empty radiators at both ends and a strongly supported anti-deformation screen plate and an anti-deformation heat dissipation cover. An anti-deformation aisle heater with an automatic blockage clearing machine is used between the reactors. The vacuum jacketed insulation furnace shell can significantly reduce the heat loss of the electric heating furnace and improve the electrical efficiency. The 20-ton and above conical reactors, while being competent for a production capacity of 20 tons, are also easy to take out titanium lumps. That is, the titanium lumps produced by the reactor with a large upper mouth and a small bottom cone-shaped reactor do not need an ejector to take out the titanium lumps. A crane can be used to easily lift and take out the titanium lumps, thereby reducing fixed asset investment, reducing bottom skin titanium, and improving the yield rate. The empty radiators at both ends can meet the 20-ton production capacity while also avoiding the hard core of the titanium lump through strong heat dissipation, thereby ensuring the quality of titanium sponge. The strong support and anti-deformation sieve plate can ensure production quality and efficiency through high bottom permeability while achieving anti-deformation and strong support. The anti-deformation porous ventilation sieve plate is strengthened by using multiple circles of rib plates to be cast in series. When producing titanium sponge, the multi-ribbed and multi-roar sieve plate is placed in the reactor, and the empty radiators at both ends are placed in the middle and upper part of the sieve plate. The vacuum is quickly drawn, the bottom titanium skin is reduced, and the rate of superior products and production efficiency are improved. That is, the new production method of placing the upper and lower empty radiators on the sieve plate in the reactor when producing titanium sponge can shorten the distillation time by more than 20%, connect the ultra-high temperature zone and the low temperature zone, and form hot and cold convection, which not only solves the problem of sintering of titanium sponge in the ultra-high temperature zone seriously affecting the product quality, but also reduces the power consumption in the low temperature zone. The filling density of titanium sponge is about 1.3g / cm3, which greatly improves product quality, reduces energy consumption, and improves production efficiency. The large anti-deformation heat dissipation cover can not only prevent deformation, but also ensure production efficiency through internal heat dissipation. In this way, the large cover of the reactor dissipates heat during reduction, ensuring that the upper part of the titanium sponge lump does not sinter, improving the yield rate, increasing the feeding rate (>600kg / h), improving production efficiency, reducing equipment maintenance costs, and improving product quality and production efficiency. The anti-deformation aisle heater with an automatic clearing machine is used between the reactors to prevent deformation and blockage and ensure smooth production capacity. Therefore, there is no need for manual clearing, which greatly reduces the labor intensity of employees, greatly shortens the production time, and greatly improves product quality and production efficiency. It has the advantage of being able to achieve high-quality and efficient production of 20 tons and above of titanium sponge.

[0006] As an optimization, the anti-deformation aisle heater is composed of a T-tube and a connecting pipe, each of which has an external insulation layer and an anti-deformation heater inside. An automatic clearing machine is installed on the vertical end of the cold-end T-tube, and the connecting pipe is connected to the T-tube through a flange. In this way, it is composed of three sections of flanges, which is convenient for disassembly and maintenance and improves structural strength. An automatic clearing machine is installed on the vertical end of the cold-end T-tube, so that it can be set at any end or both ends at the same time as needed to effectively prevent blockage. The anti-deformation heater can not only prevent deformation, but also ensure smooth flow of the pipeline by heating inside the pipeline.

[0007] As an optimization, an anti-deformation heater is provided inside the T-shaped pipe, a heat-resistant thermal insulation material layer and a stainless steel corrugated pipe shell are provided outside, and while the flange at the port of the T-shaped pipe connects the stainless steel corrugated pipe shell, the heat-resistant thermal insulation material layer is sealed in the middle interlayer, which can not only ensure the overall structural strength without deformation, but also ensure the heat insulation performance, and can also ensure smoothness through heating; the connecting pipe is a stainless steel corrugated pipe with heat-resistant thermal insulation material layer filled in the middle and fixedly connected between the two ends through flanges, and an anti-deformation heater is provided inside. The outer stainless steel corrugated pipe can ensure good disassembly and assembly adaptability of the pipeline while ensuring no deformation; the heat-resistant thermal insulation material layer filled in the middle can significantly reduce heat dissipation; the anti-deformation heater provided inside can further ensure the smoothness of the pipeline. The anti-deformation heater is provided with an anti-deformation inner cavity support and a heater, and the anti-deformation inner cavity support ensures the stable setting of the heater. The anti-deformation heater is at least provided in the middle of the inner cavity of the connecting pipe and in the inner cavity of the horizontal joint of the horizontal T-shaped aisle pipe seat, which helps to improve the heating and anti-blocking efficiency.

[0008] As an optimization, the automatic blockage clearing machine is an automatic blockage clearing device connected to the upper flange of the horizontal T-shaped aisle pipe seat. This device is connected to an automatic driving motor upward through a vertical heat insulation transmission part, and the vertical heat insulation transmission part drives a condensate cleaning arm extending into the inner cavity of the lower joint of the horizontal T-shaped aisle pipe seat through a heat-resistant sealing transmission part passing through the device base downward. This can well solve the problem that the high temperature of the reactor transfers heat upward and affects the normal operation of the driving motor.

[0009] As an optimization, the cooling medium inlet pipeline and the cooling medium outlet pipeline provided on the anti-deformation heat dissipation cover are connected or connected through a heat exchange sphere and extend downward into the reactor. A wind shield is provided inside the electric heating furnace to ensure ventilation and heat dissipation at the upper reaction zone position and prevent the heat at the lower part from being taken away. In this way, while the cooling medium inlet pipeline and the cooling medium outlet pipeline cool the anti-deformation heat dissipation cover itself, it can also realize the cooling inside the reactor by extending downward into the reactor. When connected through a heat exchange sphere, a short process of disconnecting the built-in radiator and only allowing the cover to dissipate heat and cool down, and a large heat dissipation process of further connecting the built-in radiator can be adopted according to the needs of the reaction process. On the other hand, a wind shield is designed inside the stilling furnace to ensure ventilation and heat dissipation at the upper reaction zone position while heating and insulating the lower part of the reactor, and prevent the heat at the lower part from being taken away, reducing energy consumption.

[0010] As an optimization, the cooling medium inlet pipeline first surrounds the outer flange ring part of the anti-deformation heat dissipation cover, and then is connected or connected through a heat exchange sphere to the inlet of the built-in radiator. The outlet of the built-in radiator is finally connected or connected through a heat exchange sphere to the cooling medium outlet pipeline. In this way, with the least cost of cooling medium cooling capacity, it can ensure that the cover and the sealing ring do not leak due to overheating and deformation, and can also provide the heat exchange cooling capacity required by the built-in radiator.

[0011] As an optimization, the built-in radiator is arranged on the opposite side of the anti-deformation heat dissipation cover and the horizontal connection part of the anti-deformation aisle heater, which is convenient for maintenance; the built-in radiator is a vertically extending radiator tank with a vertical inlet pipe extending downward from the top cover into the bottom of the tank or a spiral coil pipe attached to the inner wall, and the top cover is provided with an outlet communicating with the inside of the tank. It will neither affect the reaction of the reactor nor dissipate heat inside the reactor, and it also has a high heat carrying capacity. The spiral coil pipe attached to the inner wall is more conducive to heat exchange between the radiator wall and the tank wall than the vertical inlet pipe.

[0012] As an optimization, the two-end empty radiator has multiple layers of through holes distributed at intervals in the upper and lower parts of the lower open frustum cylinder. The through holes are also circumferentially spaced in each layer. The through holes are inclined holes with a higher inner part and a lower outer part. In this way, the distillation time can be shortened by more than 20%, the ultra-high temperature area and the low temperature area are connected to form a cold and hot convection, which not only solves the serious sintering of titanium sponge in the ultra-high temperature area and affects the product quality, but also reduces the power consumption in the low temperature area. The filling density of titanium sponge is reduced to about 1.3 g / cm3, which greatly improves the product quality, reduces energy consumption and improves production efficiency. In this way, the radiator can have a powerful up and down convection heat dissipation effect, so as to provide strong reaction heat dissipation support for this 20-ton and above high-quality and efficient titanium sponge reduction distillation furnace.

[0013] As an optimization, the strong support anti-deformation sieve plate is a sieve top circular plate with a diameter smaller than the inner diameter of the reactor, and is provided with a side groove for the magnesium chloride pipe to extend downward. The outer edge inner side of the sieve top circular plate is fixedly provided with an outer opening circular ring vertical plate with an opening edge extending downward to the outer opening of the side groove. The sieve top circular plate is fixedly provided with an inner opening circular ring vertical plate with the same direction as the outer opening circular ring vertical plate and a lower end lower than the outer opening circular ring vertical plate around the center through hole. The lower part of the sieve top circular plate between the inner and outer opening circular ring vertical plates is fixedly provided with radially convex arc bottom vertical plates distributed at intervals in the circumferential direction with a bottom lower than the inner opening circular ring vertical plate; between the two pairs of inner and outer opening edges of the inner and outer opening circular ring vertical plates, two side-connected lower convex arc bottom vertical plates are fixedly connected downward from the lower part of the sieve top circular plate. The sieve top circular plate with a diameter smaller than the inner diameter of the reactor provides a uniform side gap downward channel for the downward flowing liquid, which is beneficial to avoiding the hard core of the titanium sponge mass and provides a confluence support for the bottom confluence. The outer opening circular ring vertical plate is fixedly provided downward on the outer edge inner side of the sieve top circular plate, which can provide a surrounding return buffer space for the downward confluence of the above peripheral gap, and is more conducive to the downward confluence. The same-direction openings of the inner and outer opening circular ring vertical plates and the two side-connected lower convex arc bottom vertical plates form a lateral channel flowing to the magnesium chloride pipe in the center. The outer opening circular ring vertical plate, the radially convex arc bottom vertical plate and the side-connected lower convex arc bottom vertical plate obtain full and stable support from the reactor head and provide strong, stable, uniform and comprehensive reliable support for the sieve top circular plate to prevent the sieve plate from deforming.

[0014] The top sieve plate is located between two side-connected downward convex arc bottom vertical plates, between adjacent radially downward convex arc bottom vertical plates, and between a radially downward convex arc bottom vertical plate and its adjacent side-connected downward convex arc bottom vertical plate, and is provided with one or multiple columns of radially spaced-apart plate surface through-flow holes that are circumferentially spaced apart. One or more radially spaced-apart bottom through-flow grooves are provided on the outer opening circular ring vertical plate section between adjacent downward convex arc bottom vertical plates, and the two side-connected downward convex arc bottom vertical plates are respectively provided with circumferential bottom through-flow grooves. The plate surface through-flow holes provide a reliable channel for downward fluid. One or more radially spaced-apart bottom through-flow grooves are provided on the outer opening circular ring vertical plate section between adjacent downward convex arc bottom vertical plates, which can ensure the orderly confluence of the downward flow to the bottom in different channels. The two side-connected downward convex arc bottom vertical plates are respectively provided with circumferential bottom through-flow grooves for confluence to the lateral channels through the downward convex arc bottom vertical plates. In short, comprehensively, it can achieve strong support, high through-flow, and bottom confluence.

[0015] Among them, the openings of the inner and outer opening circular ring vertical plates are of the same direction and the same width, and the two side-connected downward convex arc bottom vertical plates are parallel to each other to form a stable lateral channel; the circumferential bottom through-flow grooves are opened in the inner section of the side-connected downward convex arc bottom vertical plates, which can avoid the occurrence of dead corners in the material flow.

[0016] Among them, the central through-flow hole is larger than the plate surface through-flow hole; or it is three or more porous holes with evenly distributed intervals. This is beneficial to matching the through-flow capacity of the central through-flow with the through-flow capacity of the heat dissipation cylinder.

[0017] Among them, at least two columns of plate surface through-flow holes arranged side by side with intervals are opened in the fan-shaped area of the top sieve plate between adjacent radially downward convex arc bottom vertical plates, which is beneficial to evenly distributing the downward flow trend; the inner ends of the side-connected downward convex arc bottom vertical plates are juxtaposed with the inner ends of the adjacent downward convex arc bottom vertical plates adjacent to the opening edges of the inner and outer opening circular ring vertical plates, which is beneficial to ensuring the support strength at the lateral channel; at least one column of plate surface through-flow holes is opened in the fan-shaped area of the top sieve plate between the side-connected downward convex arc bottom vertical plate and its adjacent radially downward convex arc bottom vertical plate, which is beneficial to balancing the downward flow state with other fan-shaped areas.

[0018] Among them, the lower edges of the outer opening circular ring vertical plate, the adjacent radially downward convex arc bottom vertical plate, and the lower edges of the side-connected downward convex arc bottom vertical plate are in line with the spherical cut bottom of the reactor, achieving full and stable support at the bottom of the plate; a middle opening circular ring vertical plate with a bottom higher than the bottom height of the radially downward convex arc bottom vertical plate is fixedly arranged downward under the top sieve plate between the inner and outer opening circular ring vertical plates to provide a channel for the radial bottom flow; the middle opening circular ring vertical plate is intermittently fixedly connected to the radially downward convex arc bottom vertical plate and the side-connected downward convex arc bottom vertical plate to provide circumferential support for the radially downward convex arc bottom vertical plate and the side-connected downward convex arc bottom vertical plate. An outward convex ring-shaped opening flange is fixedly arranged at the top of the inner opening circular ring vertical plate to strengthen the support for the top sieve plate and the heat dissipation cylinder above it. A sieve plate for a large-scale reduction and distillation equipment for producing sponge titanium with an energy-saving and efficient production capacity of 20 tons or more is provided, and it does not require a ejector for removal, greatly improving the quality and production efficiency.

[0019] As an optimization, a magnesium electrolysis cell device and a reduction and distillation device are arranged in the same rectangular factory building. The factory building consists of longitudinal front, middle, and rear workshop parts separated by two rows of transverse columns. In the longitudinal middle workshop part of the factory building above the ground operation platform, front and rear rows of magnesium electrolysis cells are arranged downward. Front and rear edge reduction and distillation devices are respectively arranged in the longitudinal front and rear workshop parts of the operation platform. An automatic trackless ladle flat car for transporting liquid magnesium and magnesium chloride liquid between the front and rear rows of magnesium electrolysis cells and the front and rear edge reduction and distillation devices is configured on the operation platform; transverse vertical ventilation ducts are respectively arranged at the front and rear edges in the longitudinal front, middle, and rear workshop parts of the operation platform. Longitudinal ground channel ventilation areas connected to the lower ends of the vertical ventilation ducts and longitudinal ventilation windows on both sides of the upper factory building wall matching the upper ends of the vertical ventilation ducts for ventilation are respectively arranged under and above the operation platform in the factory building. A hoisting overhead crane is configured in the factory building. Side lifting openings for the hoisting of reactors to pass through are respectively arranged on both sides between the front and rear rows of magnesium electrolysis cells and the front and rear edge reduction and distillation devices on the operation platform. The reduction and distillation device and the magnesium electrolysis cell device are arranged in the factory building at the same time. A busbar for collecting current and a main chlorine pipe are arranged between two rows of juxtaposed magnesium electrolysis cells. Two rows of sponge titanium reduction and distillation production devices are closely arranged on one side of the two rows of magnesium electrolysis cell devices. In this way, after transverse vertical ventilation ducts are respectively arranged at the front and rear edges in the longitudinal front, middle, and rear workshop parts of the operation platform, the air comfort level in the production workshop is significantly improved, and the production efficiency of operators is guaranteed and improved. Compared with the existing factory building composed of two workshop parts, the factory building consists of longitudinal front, middle, and rear workshop parts separated by two rows of transverse columns. The front and rear rows of middle-positioned magnesium electrolysis cells are arranged in the same middle workshop part, which can greatly simplify the circuit and pipeline settings of the magnesium electrolysis cells, significantly improve the support capacity of large-scale circuits and pipelines, and is very beneficial to energy conservation and efficiency improvement during the capacity expansion of electrolytic cells. Two rows of juxtaposed front and rear middle-positioned magnesium electrolysis cells are arranged downward in the longitudinal middle workshop part of the factory building above the ground operation platform, which is very beneficial to the integrated and efficient control and high-quality and efficient operation after the magnesium electrolysis cells are enlarged. Front and rear edge reduction and distillation devices are respectively arranged in the longitudinal front and rear workshop parts of the operation platform. An automatic trackless ladle flat car for transporting liquid magnesium and magnesium chloride liquid between the front and rear rows of magnesium electrolysis cells and the front and rear edge reduction and distillation devices is configured on the operation platform. While significantly shortening the transfer distance, it is also very convenient for the cross-transfer operation of the automatic trackless ladle flat car and very convenient for the efficient transfer of the automatic trackless ladle flat car.The operation platform is respectively provided with front and rear side horizontal vertical ventilation ducts in the front, middle and rear workshop parts longitudinally. The factory building is respectively provided with a longitudinal ground channel ventilation area connected to the lower end of the vertical ventilation duct under the operation platform and longitudinal ventilation windows on both side walls of the upper factory building on the platform that cooperate with the upper end of the vertical ventilation duct. This is beneficial to significantly improving the natural ventilation efficiency of the factory building while achieving large-scale production. While improving and enhancing the air quality in the factory building, it ensures that the working space in the factory building has a fresh air, summer cooling, winter heating, and comfortable working environment in spring and autumn. It is especially suitable for the harsh climate of the Gobi Desert in the southern area of Hami City where the applicant's factory building is located. That is, in summer, the cold air from the Gobi Desert at night is stored under the operation platform, and during the day, the cool air is provided to the upper layer of the operation platform through convection. In winter, the upper workshop of the operation platform is heated by the heat emitted by the equipment at night, and during the day in winter, the warm outdoor air heated by sunlight is inhaled for air renewal in the factory building. In spring and autumn, natural ventilation and air exchange are carried out to keep the air fresh, and all are natural ventilation and air exchange without consuming electricity. While saving energy, it is also very beneficial to ensure the work quality and efficiency of the operators in the large-scale factory building. The factory building is equipped with a hoisting crane. The operation platform is respectively provided with side hoisting openings for the reactor to pass through on both sides between the middle row of magnesium electrolysis cells in the front and rear and the front and rear reduction and distillation devices, which does not interfere with the normal operation trajectory of the automatic trackless ladle flat car. For the reactor descending through the side hoisting opening, there is still a spacious operation space for clearing out the sponge titanium of the reactor under the operation platform. Especially, the clearing operation is better away from the electrolytic cell circuit pipelines, significantly improving the safety and convenience of the clearing operation. Overall, it can significantly reduce the floor area of the factory building, simplify and shorten the pipeline setting, while ensuring large-scale high-production efficiency, improve the logistics efficiency, significantly save investment, and achieve energy conservation and efficiency improvement; the reduction and distillation device and the magnesium electrolysis device operate on the same operation platform, saving land, saving fixed asset investment, reducing logistics costs, reducing management costs, facilitating the growth of all-round skilled talents, saving manpower, and having high production efficiency. It can further improve energy conservation and efficiency improvement, be large-scale with relatively small investment, and have high production efficiency.

[0020] The operation platform is provided with two rows of transverse automatic trackless ladle flat car running spaces inside its reduction distillation device in the front and rear workshops in the longitudinal direction respectively, and one row of transverse automatic trackless ladle flat car running spaces is provided outside the two rows of magnesium electrolysis cell devices in the middle workshop in the longitudinal direction; the automatic trackless ladle flat car is an unmanned and trackless strong heat-insulating intelligent ladle flat car for automatically discharging magnesium chloride, automatically adding magnesium chloride, automatically discharging liquid magnesium, and automatically adding liquid magnesium. The operation platform is provided with two rows of automatic trackless ladle flat car running spaces inside its reduction distillation device in the front and rear workshops in the longitudinal direction respectively, and one row of automatic trackless ladle flat car running spaces is provided outside the two rows of magnesium electrolysis cell devices in the middle workshop in the longitudinal direction; in this way, it can well meet the need for double-position interspersed operation of the automatic trackless ladle flat car for the reduction distillation device, and the need for single-position operation of the automatic trackless ladle flat car for a single row of magnesium electrolysis cell devices, and is more conducive to meeting the need for large-scale cross-position interspersed operation of the automatic trackless ladle flat car between reduction distillation devices and magnesium electrolysis cell devices in different positions, and truly guarantees the online logistics needs for high-efficiency production after large-scale expansion. The automatic trackless ladle flat car is an unmanned and trackless strong heat-insulating intelligent ladle flat car for automatically discharging magnesium chloride, automatically adding magnesium chloride, automatically discharging liquid magnesium, and automatically adding liquid magnesium, which realizes reducing the labor intensity of on-site operators, reducing the transfer by overhead crane, and improving the safety factor. The strong heat insulation means that a ladle shell and a heat-insulating layer are arranged outside the inner cavity of the electrically heated crucible of the ladle, and the heater of the electrically heated crucible is located at the bottom of the crucible.

[0021] The reduction distillation device includes an inner jacket heating furnace reactor and an outer condenser that are movably connected through a longitudinal aisle heater. The outer shell of the jacket heating furnace is of a vacuum jacket heat-insulating type, and the body of the reactor is in a stack shape that can easily lift out the sponge titanium ingot by an overhead crane. Since the outer shell of the jacket heating furnace is of a vacuum jacket heat-insulating type, the heat energy loss can be significantly reduced. Since the body of the reactor is in a stack shape that can easily lift out the sponge titanium ingot by an overhead crane, the labor for clearing out the sponge titanium ingot can be greatly saved, and the efficiency of clearing out the sponge titanium ingot can be significantly improved. In this way, the inner jacket heating furnace reactor and the outer condenser arranged inside and outside are very convenient for the automatic trackless ladle flat car to approach the reactor for operation.

[0022] A cone-shaped radiator is arranged in the middle above the strong support and high-throughflow sieve plate of the reactor. Transverse through holes in the upper and lower layer areas with circumferential interval distribution for realizing cold and hot convection in the reduction stage, improving the quality of sponge titanium and achieving energy conservation are arranged on the outer peripheral wall of the cone-shaped radiator. Using a 20-ton double-layer vacuum heat-insulating reduction distillation furnace, the new type uses a conical reactor with a single furnace output of 20 tons, with a large upper opening and a small bottom. Titanium can be easily lifted out by an overhead crane without a jacking machine, reducing the bottom skin titanium and increasing the finished product rate. Compared with the reduction distillation furnaces of 10 tons and below commonly used in the existing sponge titanium industry, the reactor in the reduction distillation process saves about 30% of energy, correspondingly reduces the carbon dioxide emission by about 30%, saves about 40% of fixed asset investment, saves about 40% of labor, increases the excellent product rate by 10%, and greatly increases the per capita output.

[0023] The electrolysis chambers and magnesium collection chambers of the two rows of magnesium electrolysis cell devices are arranged respectively facing the middle busbar, the chlorine main pipe and the reduction and distillation devices at both ends, which can significantly improve the space efficiency; the ventilation windows on the longitudinal side walls on both sides are adjustable louvers; or the four side walls of the workshop above the operation platform are respectively provided with adjustable louvers. The louvers can not only ventilate, but also prevent rain, and can adjust the opening degree or close the ventilation opening according to needs. It can also be that the two sides of the operation platform layer are designed as horizontally sliding casement windows. In summer, the windows are opened, and it is very comfortable for employees to work on the transparent platform. In winter, the casement windows are closed tightly for warmth.

[0024] The liquid magnesium output pipe of the magnesium collection chamber of the magnesium electrolysis cell is connected to the heat preservation and heating pipeline leading to the automatic trackless ladle flat car through a union seal valve mechanism. The ladle configured on the automatic trackless ladle flat car is an electric heating crucible with a ladle shell and a heat insulation layer arranged outside the inner cavity. The ladle heat insulation sealing cover is equipped with a metering infusion pump driven by a conveying motor to seal and extend into the lower part of the ladle. The discharge pipe connected to the output port of the metering infusion pump passes through the ladle heat insulation sealing cover upward and is connected to the heat preservation and heating pipeline. The heater of the electric heating crucible is located at the bottom of the crucible, which is beneficial to simplify and strengthen the peripheral heat insulation setting. The heater of the heat preservation and heating pipeline is located in its downstream section, which is convenient for the retraction, extension and movable docking of the middle and upstream sections of the heat preservation and heating pipeline. The ladle is an electric heating crucible with a ladle shell and a heat insulation layer arranged outside the inner cavity, which can significantly save heating electric energy. The input of the built-in metering infusion pump can better ensure the suitable liquid magnesium level in the electrolysis cell and the normal high-quality and high-efficiency electrolysis operation of the electrolysis cell compared with vacuum suction during input.

[0025] The operation platform is configured with a magnesium chloride vacuum system connecting pipe with a magnesium chloride vacuum filter tank near the reduction distillation device. The vacuum suction outlet of the lifting ladle of the automatic trackless lifting ladle flat car is connected to the suction inlet of the magnesium chloride vacuum filter tank through a vacuum pipeline equipped with a lifting ladle negative pressure detection pressure transmitter and an automatic negative pressure extraction pneumatic valve; the vacuum suction inlet of the lifting ladle is connected to the magnesium chloride pipe on the anti-deformation heat dissipation cover of the reduction distillation device through a heat-insulating and heat-preserving magnesium chloride liquid conveying pipe successively provided with a siphon automatic argon filling valve, a siphon high-temperature automatic cut-off valve and an automatic siphon-breaking argon filling valve from upstream to downstream. In this way, the operation platform is configured with a magnesium chloride vacuum system connecting pipe with a magnesium chloride vacuum filter tank near the reduction distillation device. The vacuum suction outlet of the lifting ladle of the automatic trackless lifting ladle flat car is connected to the suction inlet of the magnesium chloride vacuum filter tank through a vacuum pipeline equipped with a lifting ladle negative pressure detection pressure transmitter and an automatic negative pressure extraction pneumatic valve, in which the magnesium chloride vacuum filter tank ensures the normal operation of negative pressure suction, and the lifting ladle negative pressure detection pressure transmitter and the automatic negative pressure extraction pneumatic valve ensure the normal automatic operation of negative pressure suction. In this way, the vacuum suction inlet of the lifting ladle is connected to the magnesium chloride pipe on the anti-deformation heat dissipation cover of the reduction distillation device through a heat-insulating and heat-preserving magnesium chloride liquid conveying pipe successively provided with a siphon automatic argon filling valve, a siphon high-temperature automatic cut-off valve and an automatic siphon-breaking argon filling valve from upstream to downstream, in which the siphon automatic argon filling valve, the siphon high-temperature automatic cut-off valve and the automatic siphon-breaking argon filling valve ensure the automatic pressing of magnesium chloride into the electrolytic cell and the normal operation of the electrolytic cell; the heat-insulating and heat-preserving magnesium chloride liquid conveying pipe ensures that the magnesium chloride liquid is not cooled and solidified in the pipe, avoiding affecting the normal pressing of the magnesium chloride liquid.

[0026] The operation platform is respectively configured with a common argon filling valve pipeline for connecting the argon filling valves near the reduction distillation device and the magnesium electrolytic cell, and the magnesium chloride liquid in the lifting ladle is intermittently pressed into the feeding port of the magnesium electrolytic cell through argon filling.

[0027] The chlorine gas collecting hood of the magnesium electrolyzer is connected in parallel through the main chlorine gas output pipe. The chlorine gas branch pipes of the electrolyzer I system and the chlorine gas branch pipes of the electrolyzer II system, which are respectively provided with pneumatic on-off valves for the chlorine gas branch pipes of the electrolyzer I system and the chlorine gas branch pipes of the electrolyzer II system in the middle section, are respectively connected to the chlorine gas main pipe of the I system and the chlorine gas main pipe of the II system through the Roots vacuum pump type chlorine compressor of the electrolyzer I system and the Roots vacuum pump type chlorine compressor of the electrolyzer II system. In this way, the pipeline setting on the operation platform can be significantly simplified, providing a spacious operation space for the automatic trackless ladle flat car in the electrolyzer area on the operation platform, and significantly improving the space efficiency; moreover, through the negative pressure of the pipeline in front of the Roots vacuum pump type chlorine compressor, chlorine gas leakage can be avoided. The Roots vacuum pump type chlorine compressors of the electrolyzer I system and the electrolyzer II system and their parallel pipeline settings can especially switch to another parallel pipeline system immediately when a fault occurs in one of the pipeline systems and maintenance is required, thus ensuring normal production and further completely avoiding chlorine gas leakage, ensuring safe operation under large-scale and high-production capacity. The chlorine gas branch pipes of the electrolyzer I system and the chlorine gas branch pipes of the electrolyzer II system, which are respectively provided with pneumatic on-off valves for the chlorine gas branch pipes of the electrolyzer I system and the chlorine gas branch pipes of the electrolyzer II system in the middle section, can achieve good buffering when switching pipelines, avoiding the adverse impact of pipeline switching on the normal production operation of the electrolyzer. Because during the entire production operation of the electrolyzer, the extraction of chlorine gas is always carried out continuously and stably. Once it is unstable and discontinuous, it will surely have an adverse impact on the production operation of the electrolyzer, and the adverse impact on the new large-scale and high-energy-efficiency production will be even greater.

[0028] Based on the existing electrolyzer for producing 3 tons of liquid magnesium per day, the following are adopted: for the bricks at the scoured part below the liquid level of the middle load-bearing wall of the magnesium electrolyzer, 80 mullite bricks are used. The cathode, bipolar, and anode working surfaces are respectively increased by 6 - 9%, and the volume spaces of the electrolysis chamber and the magnesium collection chamber are correspondingly increased. The bridging bricks of the middle load-bearing wall adopt single-sided knife-edge bricks, and a method of automatic online switching and adjustment of the liquid level, temperature, pressure, and chlorine gas negative pressure system is used to improve the current efficiency, and the current intensity is correspondingly increased. In this way, the productivity can be significantly improved, and the current efficiency can be increased to 82%.

[0029] In short, compared with the 10-ton and below furnaces currently used in the same industry to produce titanium sponge, this new type saves about 50% of land, about 40% of fixed asset investment, about 40% of labor, and more than 20% of energy consumption, which corresponds to a reduction of more than 20% in carbon dioxide emissions, an increase in the rate of superior products by about 10%, and a significant reduction in the labor intensity of employees. This new type uses a single furnace to produce titanium sponge of 20 tons and above, an electric heating furnace, a double-layer vacuum insulation furnace shell, a 20-ton and above reactor, an upper and lower empty radiator, an anti-deformation sieve plate, an anti-deformation heat dissipation cover, a blockage clearing machine, and an automatic wall-climbing titanium machine, to achieve high-quality and low-cost new production of titanium sponge. The electric heating furnace shell is designed as a double-layer vacuum insulation furnace shell, which is beneficial to energy saving and environmental protection. On the other hand, a wind shield is designed inside the steaming furnace to ensure that while the lower part of the reactor is heated and insulated, the upper reaction zone is ventilated and heat dissipated, and the heat from the lower part is not taken away, reducing energy consumption. The reactor is a cone-shaped reactor with a large top and a small bottom. The titanium lump can be easily taken out by a crane without an ejector, which reduces fixed asset investment, reduces the bottom titanium skin, and improves the yield rate. In particular, the new production method of using built-in empty radiators at both ends and placing the empty radiators at both ends on the sieve plate in the reactor when producing sponge titanium can shorten the distillation time by more than 20%, connect the ultra-high temperature zone and the low temperature zone to form cold and hot convection, which not only solves the problem of sintering of sponge titanium in the ultra-high temperature zone seriously affecting product quality, but also reduces power consumption in the low temperature zone, and the filling density of sponge titanium is reduced to 1.3g / cm 3 Around, greatly improve product quality, reduce energy consumption, and improve production efficiency. Use multiple circles of ribs to cast and reinforce the anti-deformation porous ventilation sieve plate. When producing sponge titanium, place the multi-ribbed porous sieve plate in the reactor, and place the two empty radiators in the middle and upper part of the sieve plate. The vacuum is fast, the bottom titanium skin is reduced, and the rate of high-quality products and production efficiency are improved. Use multiple circles of ribs to strengthen the anti-deformation heat dissipation reactor cover. The reactor cover dissipates heat during reduction to ensure that the upper part of the sponge titanium lump is not sintered, improve the yield rate, increase the feeding speed (>600kg / h), improve production efficiency, reduce equipment maintenance costs, and improve product quality and production efficiency. The use of a spiral automatic clearing device and a new method for producing sponge titanium does not require manual clearing, which greatly reduces the labor intensity of employees, greatly shortens production time, and greatly improves product quality and production efficiency.

[0030] After adopting the above technical scheme, the utility model's 20-ton and above high-quality and efficient sponge titanium reduction distillation furnace has the advantage of being able to achieve 20-ton and above high-quality and efficient sponge titanium production. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a side structural schematic diagram of a high-quality and efficient sponge titanium reduction distillation furnace of 20 tons or more according to the utility model. Figure 2It is a schematic diagram of the layout structure of a high-quality and efficient sponge titanium reduction distillation furnace of 20 tons or more and its ancillary equipment in a workshop of the utility model. Figure 3 It is a schematic diagram of the top view of the structure of the strong support and deformation-resistant sieve plate of the utility model for the high-quality and efficient production of sponge titanium reduction distillation furnace of 20 tons and above. DETAILED DESCRIPTION

[0032] As shown in the figure, the utility model of the high-quality and efficient sponge titanium reduction distillation furnace of 20 tons and above is an electric heating furnace 1 using a vacuum jacket insulation furnace shell 10 and a 20-ton and above 20-ton cone reactor 2, the reactor 2 using two empty radiators 3 and a strong support anti-deformation screen plate 4, and an anti-deformation heat dissipation cover 5, and an anti-deformation aisle heater 7 with an automatic blockage removal machine 6 is used between the reactors 2. The vacuum jacket insulation furnace shell can significantly reduce the heat loss of the electric heating furnace and improve the electrical efficiency. The 20-ton and above 20-ton cone reactor, while being competent for 20 tons of production capacity, is also easy to remove titanium lumps, that is, the titanium lumps produced by the reactor with a large upper opening and a small bottom cone-shaped reactor do not need a ejector to remove the titanium lumps, and a crane is used to easily lift and remove the titanium lumps, reducing fixed asset investment, reducing bottom skin titanium, and improving the yield rate. The empty radiators at both ends can meet the 20-ton production capacity while also avoiding the hard core of the titanium lump through strong heat dissipation, thereby ensuring the quality of titanium sponge. The strong support and anti-deformation sieve plate can ensure production quality and efficiency through high bottom permeability while achieving anti-deformation and strong support. The anti-deformation porous ventilation sieve plate is strengthened by using multiple circles of rib plates to be cast in series. When producing titanium sponge, the multi-ribbed and multi-roar sieve plate is placed in the reactor, and the empty radiators at both ends are placed in the middle and upper part of the sieve plate. The vacuum is quickly drawn, the bottom titanium skin is reduced, and the rate of superior products and production efficiency are improved. That is, the new production method of placing the upper and lower empty radiators on the sieve plate in the reactor when producing titanium sponge can shorten the distillation time by more than 20%, connect the ultra-high temperature zone and the low temperature zone, and form hot and cold convection, which not only solves the problem of sintering of titanium sponge in the ultra-high temperature zone seriously affecting the product quality, but also reduces the power consumption in the low temperature zone. The filling density of titanium sponge is about 1.3g / cm3, which greatly improves product quality, reduces energy consumption, and improves production efficiency. The large anti-deformation heat dissipation cover can not only prevent deformation, but also ensure production efficiency through internal heat dissipation. In this way, the large cover of the reactor dissipates heat during reduction, ensuring that the upper part of the titanium sponge lump does not sinter, improving the yield rate, increasing the feeding rate (>600kg / h), improving production efficiency, reducing equipment maintenance costs, and improving product quality and production efficiency. The anti-deformation aisle heater with an automatic clearing machine is used between the reactors to prevent deformation and blockage and ensure smooth production capacity. Therefore, there is no need for manual clearing, which greatly reduces the labor intensity of employees, greatly shortens the production time, and greatly improves product quality and production efficiency. It has the advantage of being able to achieve high-quality and efficient production of 20 tons and above of titanium sponge.

[0033] Specifically, the anti-deformation aisle heater 7 is composed of two end horizontal T-shaped aisle pipe seats with anti-deformation heaters provided inside the peripherally provided heat insulation layers respectively and connecting pipes. An automatic clog clearing machine 6 is provided at the upper vertical end of the cold-end horizontal T-shaped aisle pipe seat. The connecting pipes and the two end horizontal T-shaped aisle pipe seats are connected through flanges. More specifically, an anti-deformation heater 8 is provided inside the horizontal T-shaped aisle pipe seat, and a heat-resistant heat insulation material layer and a stainless steel corrugated pipe shell are provided outside. While the port flange of the horizontal T-shaped aisle pipe seat connects the stainless steel corrugated pipe shell, the heat-resistant heat insulation material layer is sealed in the middle interlayer; the connecting pipe is fixedly connected between the two ends through flanges, and the middle is filled with a heat-resistant heat insulation material layer and is an outer stainless steel corrugated pipe with an anti-deformation heater 8 provided inside. The anti-deformation heater 8 is provided with an anti-deformation inner cavity support and a heater. The anti-deformation heater 8 is at least provided in the middle of the inner cavity of the connecting pipe and in the inner cavity of the horizontal joint of the horizontal T-shaped aisle pipe seat. The automatic clog clearing machine 6 is an automatic clog clearing device connected to the upper flange of the horizontal T-shaped aisle pipe seat. This device is connected with an automatic driving motor upward through a vertical heat insulation transmission part, and the vertical heat insulation transmission part drives a wall-climbing titanium cleaning arm extending into the inner cavity of the lower joint part of the horizontal T-shaped aisle pipe seat through a heat-resistant sealing transmission part passing downward through the device base.

[0034] Specifically, the cooling medium inlet pipe and the cooling medium outlet pipe provided on the anti-deformation heat dissipation cover 5 are connected or connected through a heat exchange sphere and extend downward into the reactor 2. A wind shield is provided inside the electric heating furnace 1 to ensure ventilation and heat dissipation at the upper reaction zone position and prevent heat from being carried away at the lower part. The cooling medium inlet pipe first surrounds the outer peripheral flange part of the anti-deformation heat dissipation cover, and then is connected or connected through a heat exchange sphere to the inlet of the built-in radiator 51. The outlet of the built-in radiator 51 is finally connected or connected through a heat exchange sphere to the cooling medium outlet pipe. The built-in radiator 51 is provided on the opposite side of the horizontal connection part of the anti-deformation heat dissipation cover and the anti-deformation aisle heater 7. The built-in radiator 51 is a downward-extending heat dissipation tank provided with a vertical inlet pipe extending from the top cover downward into the bottom of the tank or a spiral coil pipe attached to the inner wall and an outlet provided on the top cover communicating with the inside of the tank.

[0035] Specifically, the two-end empty radiator 3 is provided with multiple layers of through holes distributed at intervals in the upper and lower parts of the lower open frustum cylinder. The through holes are also distributed at intervals in the circumferential direction of each layer. The through holes are inclined holes with a higher inner part and a lower outer part. In this way, the distillation time can be shortened by more than 20%, the ultra-high temperature zone and the low temperature zone are connected to form a cold and hot convection, which not only solves the serious sintering of sponge titanium in the ultra-high temperature zone and affects the product quality, but also reduces the power consumption in the low temperature zone. The filling density of sponge titanium is reduced to about 1.3 g / cm3, greatly improving the product quality, reducing energy consumption, and improving production efficiency.

[0036] Specifically, the strong-support anti-deformation sieve plate is a sieve top circular plate 40 with a diameter smaller than the inner diameter of the reactor, provided with a side groove opening 41 for the magnesium chloride pipe to extend downward. On the inner side of the outer edge below the sieve top circular plate 40, an outer opening circular ring vertical plate 42 with an opening edge extending downward to the side groove opening 41 is fixedly arranged. Below the central through-flow hole 401 of the sieve top circular plate 40, an inner opening circular ring vertical plate 43 is fixedly arranged in the same direction as the outer opening circular ring vertical plate 42, and the lower end of the inner opening circular ring vertical plate 43 is lower than the outer opening circular ring vertical plate 42. Below the sieve top circular plate 40 between the inner and outer opening circular ring vertical plates 43 and 42, radially convex arc bottom vertical plates 44 with circumferential intervals and a bottom lower than the inner opening circular ring vertical plate 43 are fixedly arranged downward; between the two pairs of inner and outer opening edges of the inner and outer opening circular ring vertical plates 43 and 42, two side-connected lower convex arc bottom vertical plates 45 fixedly arranged downward from the sieve top circular plate 40 are connected.

[0037] The sieve top circular plate 40 is between the two side-connected lower convex arc bottom vertical plates 45, between adjacent radially convex arc bottom vertical plates 44, and between the radially convex arc bottom vertical plate 44 and its adjacent side-connected lower convex arc bottom vertical plate 45, and is provided with one row or multiple rows of radially spaced-apart plate surface through-flow holes 402 with circumferential intervals. On the outer opening circular ring vertical plate 42 section between adjacent lower convex arc bottom vertical plates, one or more radially spaced-apart bottom through-flow grooves 421 are provided, and the two side-connected lower convex arc bottom vertical plates 45 are respectively provided with circumferential bottom through-flow grooves 451.

[0038] More specifically, the openings of the inner and outer opening circular ring vertical plates 43 and 42 are openings with the same direction and the same width, and the two side-connected lower convex arc bottom vertical plates 45 are parallel to each other; the circumferential bottom through-flow groove 451 is opened in the inner section of the side-connected lower convex arc bottom vertical plate 45. The central through-flow hole 401 is larger than the plate surface through-flow hole 402; it can also be three holes or more than three holes with evenly distributed intervals. In the fan-shaped area of the sieve top circular plate 40 between adjacent radially convex arc bottom vertical plates 44, two rows of plate surface through-flow holes 402 are arranged in intervals and side by side. The inner end of the side-connected lower convex arc bottom vertical plate 45 is adjacent to the inner ends of its adjacent radially convex arc bottom vertical plates 44 and is adjacent to the opening edges of the inner and outer opening circular ring vertical plates 43 and 42. In the fan-shaped area of the sieve top circular plate 40 between the side-connected lower convex arc bottom vertical plate 45 and its adjacent radially convex arc bottom vertical plate 44, one row of plate surface through-flow holes 402 is arranged. The lower edge of the outer opening circular ring vertical plate 42, the lower edge of the adjacent radially convex arc bottom vertical plate 44, and the lower edge of the side-connected lower convex arc bottom vertical plate 45 are in line with the spherical cut bottom of the reactor 2. Below the sieve top circular plate 40 between the inner and outer opening circular ring vertical plates 43 and 42, a middle opening circular ring vertical plate 46 with a bottom higher than the bottom height of the radially convex arc bottom vertical plate 44 is fixedly arranged downward, and the middle opening circular ring vertical plate 46 is intermittently fixedly connected to the radially convex arc bottom vertical plate 44 and the side-connected lower convex arc bottom vertical plate 45. The top of the inner opening circular ring vertical plate 43 is fixedly provided with an outwardly convex ring-shaped opening flange 47. In the figure, the dotted line outside the sieve top circular plate 40 is the inner wall 48 of the reactor.

[0039] Specifically, a magnesium electrolysis cell device 92 and a reduction and distillation device 93 are arranged in the same rectangular workshop 9. The workshop 9 is composed of longitudinal front, middle and rear workshop parts separated by two rows of transverse columns. In the longitudinal middle workshop part of the workshop 9 above the ground operation platform 90, front and rear rows of magnesium electrolysis cells 92 are arranged downward. Front and rear edge reduction and distillation devices 93 are respectively arranged in the longitudinal front and rear workshop parts of the operation platform 90. An automatic trackless ladle flat car 94 for transferring liquid magnesium and magnesium chloride liquid between the front and rear rows of magnesium electrolysis cells 92 and the front and rear edge reduction and distillation devices 93 is configured on the operation platform 90. Transverse vertical ventilation ducts are respectively arranged at the front and rear edges in the longitudinal front, middle and rear workshop parts of the operation platform 90. Longitudinal ground channel ventilation areas connected to the lower ends of the vertical ventilation ducts are arranged below and above the operation platform 90 in the workshop 9, and longitudinal side wall ventilation windows of the workshop above the platform that cooperate with the upper ends of the vertical ventilation ducts for ventilation are arranged. A hoisting crane is configured in the workshop 9. Side lifting openings 99 for the reactor 2 to pass through are respectively arranged on both sides between the front and rear rows of magnesium electrolysis cell devices 92 and the front and rear edge reduction and distillation devices 93 on the operation platform 90. The reduction and distillation device and the magnesium electrolysis cell device are arranged in the workshop at the same time. A busbar for collecting current and a main chlorine pipe are arranged between two rows of juxtaposed magnesium electrolysis cells. Two rows of sponge titanium reduction and distillation production devices are closely arranged on one side of the two rows of magnesium electrolysis cell devices. In this way, after transverse vertical ventilation ducts are respectively arranged at the front and rear edges in the longitudinal front, middle and rear workshop parts of the operation platform, there will be no dead corners in the ventilation in the workshop, significantly improving the air comfort level in the production workshop and ensuring and improving the production efficiency of the operators. In this way, compared with the existing composition of two workshop parts, the workshop composed of longitudinal front, middle and rear workshop parts separated by two rows of transverse columns has the front and rear rows of centrally arranged magnesium electrolysis cells in the same middle workshop part, which can greatly simplify the circuit and pipeline settings of the magnesium electrolysis cells and significantly improve the support capacity of the large-scale circuit and pipeline, being very conducive to energy conservation and efficiency improvement during the capacity expansion of the electrolysis cells. Two rows of centrally arranged front and rear rows of magnesium electrolysis cells are arranged downward in the longitudinal middle workshop part of the workshop above the ground operation platform, being very conducive to the integrated and efficient control and high-quality and efficient operation after the magnesium electrolysis cells are enlarged. Front and rear edge reduction and distillation devices are respectively arranged in the longitudinal front and rear workshop parts of the operation platform. An automatic trackless ladle flat car for transferring liquid magnesium and magnesium chloride liquid between the front and rear rows of magnesium electrolysis cells and the front and rear edge reduction and distillation devices is configured on the operation platform. While significantly shortening the transfer distance, it is also very convenient for the cross-transfer operation of the automatic trackless ladle flat car and very convenient for the efficient transfer of the automatic trackless ladle flat car.The operation platform is respectively provided with front and rear side horizontal vertical ventilation ducts in the front, middle and rear workshops longitudinally. The factory building is respectively provided with a longitudinal ground channel ventilation area connected to the lower end of the vertical ventilation duct under the operation platform and ventilation windows on both side walls of the longitudinal upper factory building on the platform that cooperate with the upper end of the vertical ventilation duct. This is beneficial to significantly improving the natural ventilation efficiency of the factory building while achieving large-scale production. While improving and enhancing the air quality in the factory building, it ensures that the working space in the factory building has a fresh air, summer cooling, winter heating, and comfortable working environment in spring and autumn. It is especially suitable for the harsh climate of the Gobi Desert in the southern region of Hami where the applicant's factory is located. That is, in summer, the cold air from the Gobi Desert at night is stored under the operation platform, and during the day, the cool air is provided to the upper layer of the operation platform through convection. In winter, the upper workshop of the operation platform is heated by the heat emitted by the equipment at night, and during the day in winter, the warm outdoor air heated by sunlight is inhaled to update the air in the factory building. In spring and autumn, natural ventilation and air exchange are carried out to keep the air fresh, and all are natural ventilation and air exchange without consuming electricity. While saving energy, it is also very beneficial to ensure the work quality and efficiency of the operators in the large-scale factory building. The factory building is equipped with a hoisting crane. The operation platform is respectively provided with side-mounted hoisting openings on both sides between the middle-row front and rear magnesium electrolysis cells and the front and rear reduction and distillation devices for the reactor to be hoisted through, which does not interfere with the normal operation trajectory of the automatic trackless lifting ladle flat car. The reactor descending through the side-mounted hoisting opening still has a spacious operation space for clearing out titanium sponge under the operation platform. Especially, the clearing operation is better away from the electrolytic cell circuit pipelines, significantly improving the safety and convenience of the clearing operation. Overall, it can significantly reduce the floor area of the factory building, simplify and shorten the pipeline setting, improve the logistics efficiency, save investment significantly while ensuring large-scale high-production efficiency, and achieve energy conservation and efficiency improvement; the reduction and distillation device and the magnesium electrolysis device operate on the same operation platform, saving land, fixed asset investment, reducing logistics costs, reducing management costs, facilitating the growth of all-round skilled talents, saving manpower, and having high production efficiency. It can further improve energy conservation and efficiency improvement, be large-scale with relatively small investment and high production efficiency.

[0040] Specifically, the reduction and distillation device 93 includes an inner jacket electric heating furnace 1, a reactor 2 and an outer condenser that are movably connected through a longitudinal aisle heater. The outer shell of the electric heating furnace 1 is of a vacuum jacket heat insulation type, and the body of the reactor 2 is in a stack shape that can be easily lifted out of the titanium sponge ingot by a crane. The reactor is provided with a conical cylinder radiator in the middle above its strongly supported and high-throughflow sieve plate. The outer peripheral wall of the conical cylinder radiator is provided with upper and lower layer transverse through holes with circumferential interval distribution for realizing heat and cold convection during the reduction stage, improving the quality of titanium sponge and achieving energy conservation.

[0041] Specifically, the electrolysis chambers and magnesium collection chambers of the two rows of magnesium electrolysis cell devices 92 are arranged facing the intermediate busbar, the chlorine main pipe, and the two-end reduction and distillation devices 93 respectively, which can significantly improve the space efficiency; the ventilation windows on the longitudinal side walls are adjustable louvers; or the four side walls of the plant above the operation platform are respectively provided with adjustable louvers. It can also be designed that the two sides of the operation platform layer are flat-pull casement windows. In summer, the windows are opened, and it is very comfortable for employees to work on the transparent platform. In winter, the casement windows are closed tightly for warmth.

[0042] Specifically, the liquid magnesium output pipe of the magnesium collection chamber of the magnesium electrolysis cell device 92 is connected to the heat preservation and heating pipeline leading to the automatic trackless ladle flat car 94 through a union type sealing valve mechanism. The ladle 940 configured on the automatic trackless ladle flat car 94 is an electrically heated crucible with a ladle shell and a heat insulation layer outside the inner cavity. The ladle heat insulation and sealing cover is equipped with a metering infusion pump driven by a conveying motor to seal and extend into the lower part of the ladle 940. The discharge pipe connected to the output port of the metering infusion pump passes upward through the ladle heat insulation and sealing cover and is connected to the heat preservation and heating pipeline. The heater of the electrically heated crucible is located at its bottom. The heater of the heat preservation and heating pipeline is located in its downstream section.

[0043] Specifically, the operation platform 90 is equipped with a magnesium chloride vacuum system connection pipe with an attached magnesium chloride vacuum filter tank near the reduction and distillation device 93. The vacuum suction outlet of the ladle 940 of the automatic trackless ladle flat car 94 is connected to the suction inlet of the magnesium chloride vacuum filter tank through a vacuum pipeline provided with a ladle negative pressure detection pressure transmitter and an automatic negative pressure pumping pneumatic valve; the vacuum suction inlet of the ladle 940 is connected to the magnesium chloride pipe on the anti-deformation heat dissipation cover 5 of the reduction and distillation device through a heat insulation and magnesium chloride liquid conveying pipe sequentially provided with a siphon automatic argon filling valve, a siphon high-temperature automatic cut-off valve, and an automatic siphon-breaking argon filling valve from upstream to downstream. The operation platform 90 is respectively equipped with a common argon filling valve pipeline for connecting the argon filling valves near the reduction and distillation device 93 and the magnesium electrolysis cell device 92, and the magnesium chloride liquid in the ladle 940 is intermittently pressed into the feeding port of the magnesium electrolysis cell 92 through argon filling.

[0044] Specifically, the chlorine gas collection hood of the magnesium electrolysis cell is connected in parallel through a chlorine gas output main pipe to the chlorine gas branch pipe of the electrolysis cell I system and the chlorine gas branch pipe of the electrolysis cell II system respectively provided with a pneumatic switch valve for the chlorine gas branch pipe of the electrolysis cell I system and a pneumatic switch valve for the chlorine gas branch pipe of the electrolysis cell II system in the middle section. The chlorine gas branch pipe of the electrolysis cell I system and the chlorine gas branch pipe of the electrolysis cell II system are respectively connected to the chlorine gas main pipe of the I system and the chlorine gas main pipe of the II system through a Na-type vacuum pump type chlorine compressor of the electrolysis cell I system and a Na-type vacuum pump type chlorine compressor of the electrolysis cell II system.

[0045] Specifically, based on the existing electrolytic cell device 92 for producing 3 tons of liquid magnesium per day, the following measures are adopted: for the bricks at the scoured part below the liquid level of the middle load-bearing wall of the magnesium electrolytic cell device 92, 80 mullite bricks are used. The working surfaces of the cathode, bipolar, and anode are respectively increased by 6-9%, and the volume spaces of the electrolysis chamber and the magnesium collection chamber are correspondingly increased. The bridging bricks of the middle load-bearing wall adopt single-sided knife-edge bricks. A method of automatically online switching and adjustment of liquid level, temperature, pressure, and chlorine negative pressure system is used to improve the current efficiency, and the current intensity is correspondingly increased. This can improve the productivity, and the current efficiency can be increased to 82%.

[0046] Specifically, in the longitudinal front and rear workshops of the operation platform 90, two rows of transverse automatic trackless ladle flat cars 94 are respectively arranged inside the reduction and distillation device 93. In the longitudinal middle workshop of the operation platform 90, one row of transverse automatic trackless ladle flat cars 94 is respectively arranged outside the two rows of magnesium electrolytic cell devices 92; the automatic trackless ladle flat car 94 is an unmanned, trackless, highly heat-insulated intelligent ladle flat car that can automatically discharge magnesium chloride, automatically add magnesium chloride, automatically discharge liquid magnesium, and automatically add liquid magnesium. The heat exchange waste gas of the magnesium electrolytic cell is centrally collected and sent to the tail gas treatment station for treatment to ensure fresh air in the workshop. The temperature, liquid level, and pressure are controlled automatically and fully to maintain stable and efficient operation. The production control method of electrolytic magnesium adopts multi-cascade automatic technology to realize the multiple correlations of direct current, liquid level, chlorine gas flow, direct current bus grounding protection, gas detection, and tail gas absorption system, ensuring the high-efficiency, safe, and stable operation of the system. Temperature detection patrol track robots are arranged on the bridge frames on the cathode side of the electrolytic cell and the side of the reduction and distillation furnace body to monitor the equipment temperature in real time. The reduction and distillation device and the magnesium electrolytic cell device are arranged in the same workshop. A busbar for collecting current and a main chlorine gas pipe are arranged between the two rows of juxtaposed magnesium electrolytic cells. The two rows of sponge titanium reduction and distillation production devices are closely arranged on one side of the two rows of magnesium electrolytic cell devices. Intelligent trackless electric vehicles are used to automatically discharge magnesium and add magnesium, and large furnaces with a capacity of 20 tons or more are used to produce sponge titanium, including large electrolytic cells for producing 4 tons of magnesium per day with energy conservation and low carbon emissions, large reduction and distillation sponge titanium furnaces for producing 20 tons of sponge titanium per single furnace with energy conservation and low carbon emissions, reactors, radiators and other large equipment. It has the advantages of small equipment investment and high logistics efficiency.

[0047] That is, the layout of the titanium sponge production device and the magnesium electrolysis cell device in the production of the new type of titanium sponge is to arrange the titanium sponge production device and the magnesium electrolysis cell device in the same rectangular workshop. A busbar and a chlorine main pipe are arranged between the two rows of horizontally arranged magnesium electrolysis cell devices in the middle. The reduction and distillation titanium sponge production devices are respectively arranged outside the two rows of horizontally arranged magnesium electrolysis cell devices in the middle. The magnesium chloride liquid produced by the reduction and distillation titanium sponge production devices is transported to the electrolytic cell by a trackless electric flat car and its crucible ladle. The reduction and distillation electric furnace of each reduction and distillation titanium sponge production device and the condenser of the titanium sponge production device are arranged longitudinally inside and outside. The electrolysis chamber part and the magnesium collection chamber of the magnesium electrolysis cell are respectively arranged facing the middle busbar and chlorine main pipe and the titanium sponge production devices at both ends. The workshop consists of three rows of horizontally arranged workshop parts in parallel. Each workshop part is equipped with an overhead crane of the corresponding tonnage for hoisting reactors, assembling reactors, and hoisting for maintenance during the production process, etc. The roof of the workshop has a ridge in each workshop part, and roof columns are arranged between adjacent workshop parts. The magnesium chloride liquid produced by the titanium sponge production device is directly discharged into the ladle on the trackless electric flat car through argon filling in the reactor, and the magnesium chloride liquid is directly sent into the magnesium electrolysis cell by means of argon filling into the ladle. Ventilation areas are respectively set for the reduction and distillation devices and the magnesium electrolysis production devices on both sides of the workshop. The operation platform layer is well ventilated in summer and sealed and insulated in winter. The reduction and distillation device uses a large furnace of 20 tons or more to produce titanium sponge.

[0048] In short, the high-efficiency reduction and distillation furnace for producing titanium sponge with a capacity of 20 tons or more of the present utility model has the advantage of being able to achieve high-efficiency production of titanium sponge with a capacity of 20 tons or more.

Claims

1. A high-efficiency sponge titanium reduction and distillation furnace with a capacity of 20 tons or more, characterized in that The electric heating furnace adopts a vacuum jacketed heat-insulating furnace shell and a frustum reactor with a capacity of 20 tons or more. The reactor adopts two-end empty radiators, a strong support anti-deformation sieve plate, and an anti-deformation heat-dissipating large cover. An anti-deformation aisle heater with an automatic blockage clearing machine is adopted between the reactors.

2. The high-efficiency titanium sponge reduction and distillation furnace for production of 20 tons or more as claimed in claim 1, characterized in that The anti-deformation aisle heater is composed of a T-shaped pipe with a heat-insulating layer outside and an anti-deformation heater inside, and a connecting pipe. An automatic blockage clearing machine is installed at the upper vertical end of the cold-end T-shaped pipe. The connecting pipe and the T-shaped pipe are connected through a flange.

3. The high-efficiency titanium sponge reduction and distillation furnace with a production capacity of 20 tons or more as claimed in claim 2, wherein The horizontal T-shaped aisle pipe seat is internally provided with an anti-deformation heater, externally provided with a heat-resistant heat-insulating material layer and a stainless steel bellows shell. While the port flange of the T-shaped pipe connects the stainless steel bellows shell, the heat-resistant heat-insulating material layer is sealed in the middle interlayer. The connecting pipe is a stainless steel bellows outside with heat-resistant heat-insulating material layer filled in the middle, and is fixedly connected at both ends through flanges, and is internally provided with an anti-deformation heater.

4. The high-efficiency titanium sponge reduction and distillation furnace with a capacity of 20 tons or more according to claim 2, characterized in that The automatic blockage clearing machine is an automatic blockage clearing device connected to the flange on the cold-end T-shaped pipe. The device is upwardly connected with an automatic driving motor through a vertical heat-insulating transmission part. The vertical heat-insulating transmission part drives a condensate cleaning arm extending into the inner cavity of the lower joint part of the horizontal T-shaped aisle pipe seat through a heat-resistant sealing transmission part passing through the device base downward.

5. The high-efficiency titanium sponge reduction and distillation furnace with a capacity of 20 tons or more as claimed in claim 1, wherein The cooling medium inlet pipe and the cooling medium outlet pipe provided on the anti-deformation heat-dissipating large cover are connected or connected through a heat exchange sphere and extend downward into the reactor.

6. The high-efficiency titanium sponge reduction and distillation furnace with a capacity of 20 tons or more as claimed in claim 5, characterized in that The cooling medium inlet pipe first surrounds the outer peripheral flange part of the anti-deformation heat-dissipating large cover, and then is connected or connected through a heat exchange sphere to the inlet of the built-in radiator. The outlet of the built-in radiator is finally connected or connected through a heat exchange sphere to the cooling medium outlet pipe.

7. The high-efficiency titanium sponge reduction and distillation furnace for producing 20 tons or more of titanium sponge according to claim 6, characterized in that The built-in radiator is arranged on the opposite side of the cross-connection part between the anti-deformation heat-dissipating large cover and the anti-deformation aisle heater. The built-in radiator is a downward-extending heat-dissipating tank with a vertical inlet pipe extending from the top cover downward into the bottom of the tank or a spiral coil pipe attached to the inner wall, and the top cover is provided with an outlet communicating with the inside of the tank.

8. The high-efficiency titanium sponge reduction and distillation furnace with a production capacity of 20 tons or more as claimed in claim 1, wherein The two-end empty radiator is provided with multiple layers of through holes distributed at intervals in the upper and lower parts of the lower-open frustum cylinder.

9. The high-efficiency titanium sponge reduction and distillation furnace with a capacity of 20 tons or more as claimed in claim 1, characterized in that The strong support anti-deformation sieve plate is a sieve top circular plate with a diameter smaller than the inner diameter of the reactor, and is provided with a side groove for the magnesium chloride pipe to extend downward. The outer edge inner side of the sieve top circular plate is fixedly provided with an outer opening circular ring vertical plate with an opening edge extending downward to the outer opening of the side groove. The sieve top circular plate is fixedly provided with an inner opening circular ring vertical plate with the same direction as the outer opening circular ring vertical plate and a lower end lower than the outer opening circular ring vertical plate around the center through hole. Radially convex arc bottom vertical plates with a bottom lower than the inner opening circular ring vertical plate and distributed at intervals in the circumferential direction are fixedly provided downward on the lower surface of the sieve top circular plate between the inner and outer opening circular ring vertical plates. Two side-connected lower convex arc bottom vertical plates fixedly provided downward from the lower surface of the sieve top circular plate are fixedly connected between the two pairs of inner and outer opening edges of the inner and outer opening circular ring vertical plates. The sieve top circular plate is provided with a column or multiple columns of radially spaced-apart plate surface through holes distributed at intervals in the circumferential direction between the two side-connected lower convex arc bottom vertical plates, between adjacent radially convex arc bottom vertical plates, and between the radially convex arc bottom vertical plate and its adjacent side-connected lower convex arc bottom vertical plate. One or more radially spaced-apart bottom through-flow grooves are provided on the outer opening circular ring vertical plate section between adjacent lower convex arc bottom vertical plates, and circumferential bottom through-flow grooves are respectively provided on the two side-connected lower convex arc bottom vertical plates.

10. The high-efficiency titanium sponge reduction and distillation furnace for production of 20 tons or more as described in claim 1, characterized in that A magnesium electrolysis cell device and a reduction distillation device are arranged in the same rectangular workshop. The workshop consists of longitudinal front, middle, and rear workshop parts separated by two rows of transverse columns. In the longitudinal middle workshop part of the workshop above the ground operation platform, front and rear rows of magnesium electrolysis cells are arranged downward. Front and rear edge reduction distillation devices are respectively arranged in the longitudinal front and rear workshop parts of the operation platform. An automatic trackless ladle flat car for transporting liquid magnesium and magnesium chloride liquid between the front and rear rows of magnesium electrolysis cells and the front and rear edge reduction distillation devices is configured on the operation platform; transverse vertical ventilation ducts are respectively arranged at the front and rear edges in the longitudinal front, middle, and rear workshop parts of the operation platform. A longitudinal ground channel ventilation area communicated with the lower end of the vertical ventilation duct and longitudinal ventilation windows on both side walls of the workshop above the platform cooperating with the upper end of the vertical ventilation duct are respectively arranged below and above the operation platform in the workshop. A hoisting crane is configured in the workshop. Side-mounted lifting openings for the hoisting of reactors are respectively arranged on both sides between the front and rear rows of magnesium electrolysis cells and the front and rear edge reduction distillation devices on the operation platform.

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