Large magnesium-titanium combined device for efficiently producing titanium sponge in energy-saving manner

Abstract

The utility model relates to a large magnesium-titanium combined device for efficiently producing titanium sponge in an energy-saving manner. The workshop is composed of two rows of longitudinal front-middle-rear workshop parts spaced by transverse stand columns, an automatic trackless two-man ladle flatcar higher than a ground operation platform is arranged in the workshop, front and rear rows of magnesium electrolytic cells are downwards arranged on the longitudinal middle workshop part, and front and rear side reduction distillation devices are arranged on the longitudinal front and rear workshop parts respectively. The front, middle and rear workshop parts of the working platform are respectively provided with front and rear horizontal vertical ventilating ducts, the workshop is respectively provided with a longitudinal ground channel ventilating area and longitudinal upper workshop two-side wall ventilating windows below and above the working platform, and the working platform is provided with two side hoisting openings. The system has the advantages of being small in equipment investment, high in logistics efficiency, capable of improving workshop air comfort and production efficiency and capable of remarkably saving energy and improving efficiency.

Description

Technical Field

[0001] The utility model relates to a sponge titanium production device by the magnesium thermal method, in particular to a large-scale magnesium-titanium combined device for energy-saving and efficient production of sponge titanium. Background Technique

[0002] In the process of producing sponge titanium by the full Kroll process, in the reduction and distillation process, molten metallic magnesium (liquid magnesium) reacts with titanium tetrachloride at about 900 °C in a reactor to prepare sponge titanium, and the by-product is molten magnesium chloride. The by-product molten magnesium chloride is sent to the magnesium electrolysis process for electrolysis. The liquid magnesium produced in the magnesium electrolysis process is returned to the reduction and distillation process as a reducing agent for recycling, and chlorine is returned to the chlorination process as a raw material for producing titanium tetrachloride for recycling. In the reduction and distillation process, generally, a production method of adding magnesium into the reactor at one time, continuously adding titanium tetrachloride, and periodically and intermittently discharging the by-product molten magnesium chloride is adopted. For every 1 ton of sponge titanium produced, about 1 ton of metallic magnesium is required, and about 4 tons of magnesium chloride are by-produced; in the magnesium electrolysis process, a production method of intermittently adding molten magnesium chloride, intermittently extracting liquid magnesium, and continuously discharging chlorine is adopted. For every 1 ton of liquid magnesium produced, about 4 tons of molten magnesium chloride are required, and about 3 tons of chlorine are by-produced. Therefore, for every 1 ton of sponge titanium produced, there is a transportation volume of up to 5 tons between the reduction and distillation process and the magnesium electrolysis process for the high-temperature melt, and the transportation volume of molten magnesium chloride is 4 times that of the molten liquid magnesium transportation volume.

[0003] In the existing layout of the full-process production process of sponge titanium, the sponge titanium production device and the magnesium production device are usually arranged in two different independent workshops, divided into the sponge titanium production process and the magnesium electrolysis production process. For the transfer of liquid magnesium and magnesium chloride between the two processes, generally, liquid magnesium heat-insulated ladles and magnesium chloride heat-insulated ladles are used, and a truck or an electric flatbed truck is used for transfer. The above layout has the following main problems: First, the transportation distance is long, resulting in large heat loss and high fuel consumption or power consumption of the transportation vehicle; second, the frequency of loading and unloading operations of empty and full ladles of magnesium heat-insulated ladles and magnesium chloride heat-insulated ladles is high in both processes, the labor intensity of workers is large, and the safety risk is high; third, more overhead cranes and transportation vehicles are configured, and the equipment investment is large.

[0004] The layout method of the reduction and distillation device and the magnesium electrolysis cell device for titanium sponge production with the existing literature number CN 114317966 A is to arrange the reduction and distillation device and the magnesium electrolysis cell device in the same plant. A busbar and a chlorine main pipe are arranged between two rows of side-by-side magnesium electrolysis cells. Two rows of reduction and distillation devices equipped with magnesium chloride solution buffer tanks and liquid magnesium buffer tanks are respectively arranged outside the two rows of magnesium electrolysis cell devices. The magnesium chloride solution produced by the reduction and distillation device is transported by pipeline to the adjacent magnesium chloride solution buffer tank, and the magnesium chloride solution in the magnesium chloride solution buffer tank is transported by pipeline to the adjacent magnesium electrolysis cell. At least two sets of side-by-side reduction and distillation devices are arranged at intervals corresponding to each magnesium electrolysis cell outward, and at least two magnesium chloride solution buffer tanks and at least one liquid magnesium buffer tank are arranged in the interval space between each magnesium electrolysis cell and at least two sets of side-by-side reduction and distillation devices. Two adjacent magnesium chloride solution buffer tanks and at least one liquid magnesium buffer tank are arranged in a row and are arranged parallel to two sets of side-by-side reduction and distillation devices. The reduction and distillation electric furnace and the condenser of the reduction and distillation device of each set of reduction and distillation devices are arranged from the inside to the outside, and the electrolysis chamber part and the magnesium collection chamber of the magnesium electrolysis cell are arranged towards the busbar, the chlorine main pipe and the reduction and distillation device respectively. The plant consists of two rows of side-by-side workshop buildings adjacent to each other between two rows of magnesium electrolysis cells, and each row of workshop buildings is equipped with overhead cranes on the upper and lower floors. The tonnage of the overhead crane on the upper floor is greater than that of the overhead crane on the lower floor. The overhead crane on the upper floor is used to lift the reactor of the reduction and distillation device, and the overhead crane on the lower floor is used to lift the liquid magnesium vacuum ladle to intermittently extract liquid magnesium from the magnesium electrolysis cell, add liquid magnesium to the liquid magnesium buffer tank and the reactor, extract liquid magnesium from the liquid magnesium buffer tank, and for maintenance lifting during the production process. The roof of the plant has a ridge at the top of the two side-by-side workshop buildings, and roof supports are arranged around the plant and between the two side-by-side workshop buildings. The magnesium chloride solution produced by the reduction and distillation device is directly discharged into the magnesium chloride solution buffer tank through argon filling in the reactor, and the magnesium chloride solution in the magnesium chloride solution buffer tank is directly fed into the magnesium electrolysis cell by argon filling into the buffer tank or by pumping. During the production organization process, one set of magnesium electrolysis cell device, two magnesium chloride solution buffer tanks, one liquid magnesium buffer tank and two sets of reduction and distillation devices are organized as a small production unit for production, and liquid magnesium and magnesium chloride solution are circulated and balanced within this production unit for production; equipment between adjacent small production units can be used interchangeably as needed.Transportation of magnesium chloride solution: Two sets of reduction and distillation devices are alternately organized for production, with one set in the reduction stage and the other in the distillation stage; two magnesium chloride solution buffer tanks are alternately used. One is used to receive the magnesium chloride solution intermittently discharged from the reduction and distillation device in the reduction stage into one of the magnesium chloride solution buffer tanks, and the other is used to replenish the magnesium chloride solution to the magnesium electrolysis cell. The transportation of the magnesium chloride solution between the reduction and distillation device and the magnesium chloride solution buffer tank, and between the magnesium chloride solution buffer tank and the magnesium electrolysis cell, is achieved by pressure transportation by filling argon gas into the reactor of the reduction and distillation device and the magnesium chloride solution buffer tank, or by high-temperature pumping. Transportation of liquid magnesium: Use a small-tonnage lower-level overhead crane to lift the liquid magnesium vacuum ladle, intermittently vacuum extract the liquid magnesium from the magnesium electrolysis cell, and directly transport it by the small-tonnage lower-level overhead crane to the side of the reactor of the reduction and distillation device and press it into the reactor, or directly transport it by the small-tonnage lower-level overhead crane to the side of the liquid magnesium buffer tank and press it into the liquid magnesium buffer tank for buffering and standby. In addition, the liquid magnesium in the liquid magnesium buffer tank can also be extracted from the liquid magnesium buffer tank and added to the reactor through the operation of the liquid magnesium vacuum ladle and the small-tonnage lower-level overhead crane. However, in terms of energy conservation and efficiency improvement, further improvement is still needed. Summary of the Invention

[0005] The purpose of the present utility model is to overcome the above defects of the prior art and provide a large-scale electrolytic magnesium cell and a combined magnesium-titanium device of a reduction and distillation furnace for energy-saving and high-efficiency production of titanium sponge. It can further improve energy conservation and efficiency improvement. It has the advantages of large scale, relatively small investment, and high production efficiency.

[0006] To achieve the above object, the present utility model provides a large-scale electrolytic magnesium cell and a magnesium-titanium combined reduction and distillation furnace for energy-efficient production of titanium sponge. A magnesium electrolysis cell device and a reduction and distillation device are arranged in the same rectangular workshop. The special feature is that 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, two rows of middle-positioned front and rear row magnesium electrolysis cells are arranged side by side 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 row 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 communicated with the lower ends of the vertical ventilation ducts are arranged below the operation platform of the workshop, and longitudinal ventilation windows on both sides of the upper workshop on the platform cooperating with the upper ends of the vertical ventilation ducts for ventilation are arranged above the operation platform. A hoisting overhead crane is configured in the workshop. Side-mounted hoisting openings for the hoisting of reduction and distillation reactors to pass through are respectively arranged on both sides between the middle-positioned front and rear row magnesium electrolysis cells and the front and rear edge reduction and distillation devices on the operation platform. The workshop arranges the reduction and distillation device and the magnesium electrolysis cell device at the same time. A busbar for collecting current and a main chlorine gas pipe are arranged between the two rows of magnesium electrolysis cells arranged side by side. Two rows of titanium sponge 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 of the production workshop is significantly improved, and the production efficiency of operators is guaranteed and improved. Compared with the existing structure composed of two workshop parts, the workshop consisting of longitudinal front, middle and rear workshop parts separated by two rows of transverse columns has the middle-positioned front and rear row magnesium electrolysis cells arranged in the same middle workshop part, which can greatly simplify the circuit and pipeline settings of the magnesium electrolysis cells, significantly improve the circuit and pipeline support capacity for large-scale production, and is very beneficial to energy conservation and efficiency improvement during the capacity expansion of the electrolytic cells. The longitudinal middle workshop part of the workshop above the ground operation platform is provided with two rows of middle-positioned front and rear row magnesium electrolysis cells arranged side by side downward, which is very beneficial to the integrated and efficient control and high-quality 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 row 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 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 conducive 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, cool in summer, warm in winter, and comfortable in spring and autumn working environment. It is especially suitable for the harsh climate of the Gobi Desert 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 dissipated by the equipment at night, and during the day in winter, the fresh outdoor warm air heated by sunlight is inhaled for air renewal in the factory building. In spring and autumn, natural ventilation is used for air exchange to keep the air fresh, and all are natural ventilation and air exchange without consuming electricity. While saving energy, it is also very conducive to ensuring the work quality and efficiency of the operators in the large-scale factory building. The factory building is equipped with a lifting crane. The operation platform is respectively provided with side lifting openings on both sides between the middle row of front and rear magnesium electrolysis cells and the front and rear reduction and distillation devices for the lifting of the reduction and distillation reactors to pass through, which does not interfere with the normal operation trajectory of the automatic trackless lifting ladle flat car. For the reactor descending through the side lifting opening, there is still sufficient space for the operation of clearing 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 high production efficiency. In short, it has the advantages of small equipment investment, high logistics efficiency, significantly reducing energy consumption, improving productivity, reliable production safety, significantly reducing the labor intensity of transshipment, achieving fresh air in the Gobi Desert factory building without consuming energy for ventilation, no sweltering heat in summer and no severe cold in winter, improving the air comfort of the production workshop and improving and ensuring the production efficiency of the operators, and significantly saving energy and increasing efficiency.

[0007] As an optimization, the reduction and 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 insulation type, and the body of the reactor is in the shape of a stacking platform that can easily lift out the titanium sponge ingot with a crane. Since the outer shell of the jacket heating furnace is of a vacuum jacket heat insulation type, heat energy loss can be significantly reduced. The body of the reactor is in the shape of a stacking platform that can easily lift out the titanium sponge ingot with a crane, which can greatly save the labor for clearing out the titanium sponge ingot and significantly improve the efficiency of clearing out the titanium sponge ingot. In this way, the inner jacket heating furnace reactor and the outer condenser arranged on the inner and outer sides are very convenient for the automatic trackless ladle car to approach the reactor for operation.

[0008] As an optimization, a cone-shaped radiator is arranged in the middle above the sieve plate with strong support and high through-flow of the reactor. The outer peripheral wall of the cone-shaped radiator is provided with upper and lower layer area transverse through-holes that are circumferentially spaced and distributed for realizing cold and hot convection during the reduction stage, improving the quality of titanium sponge and achieving energy conservation. Using a 20-ton double-layer vacuum insulation reduction and 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 taken out without a push-out machine and can be easily lifted out with an overhead crane, reducing the bottom skin titanium and increasing the finished product rate. Compared with the reduction and distillation furnaces with a capacity of 10 tons and below and the reactors in the reduction and distillation process commonly used in the existing titanium sponge industry, the energy consumption is reduced by about 30%, the carbon dioxide emissions are correspondingly reduced by about 30%, the fixed asset investment is saved by about 40%, the labor is saved by about 40%, the excellent product rate is increased by 10%, and the per capita output is greatly increased.

[0009] As an optimization, the electrolysis chambers and magnesium collection chambers of the two rows of magnesium electrolysis cell devices are arranged towards the middle busbar and the chlorine main pipe and the reduction and distillation devices at both ends respectively, which can significantly improve the space efficiency; the longitudinal side wall ventilation windows 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.

[0010] As an optimization, the liquid magnesium output pipe of the magnesium electrolysis cell's magnesium collection chamber 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 outside the inner cavity. The ladle heat insulation and sealing cover is equipped with a conveying motor to drive a metering infusion pump that seals and extends into the lower part of the ladle. 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 electric heating crucible is located at the bottom of the crucible, which is conducive to simplifying and strengthening the peripheral heat insulation and setting. The heater of the heat preservation and heating pipeline is located in its downstream section, facilitating the retraction, extension, and movable docking of the middle and upstream sections of the heat preservation and heating pipeline. The ladle being an electric heating crucible with a ladle shell and a heat insulation layer outside the inner cavity can significantly save heating electrical energy. With the built-in metering infusion pump input, compared with vacuum suction, it can better ensure the appropriate liquid magnesium level in the electrolysis cell and the normal high-quality and efficient electrolysis operation of the electrolysis cell while inputting.

[0011] As an optimization, the operation platform is configured with a magnesium chloride vacuum system connection pipe with an attached magnesium chloride vacuum filter tank near the reduction and distillation device. The vacuum suction outlet of the ladle on the automatic trackless ladle flat car is connected to the suction inlet of the magnesium chloride vacuum filter tank through a vacuum pipeline equipped with a ladle negative pressure detection pressure transmitter and an automatic negative pressure pumping pneumatic valve; the vacuum suction inlet of the ladle is connected to the magnesium chloride pipe on the reactor cover of the reduction and distillation device through a heat-insulated 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. In this way, the operation platform is configured with a magnesium chloride vacuum system connection pipe with an attached magnesium chloride vacuum filter tank near the reduction and distillation device. The vacuum suction outlet of the ladle on the automatic trackless ladle flat car is connected to the suction inlet of the magnesium chloride vacuum filter tank through a vacuum pipeline equipped with a ladle negative pressure detection pressure transmitter and an automatic negative pressure pumping pneumatic valve, where the magnesium chloride vacuum filter tank ensures the normal operation of negative pressure suction, and the ladle negative pressure detection pressure transmitter and the automatic negative pressure pumping pneumatic valve ensure the normal automatic operation of negative pressure suction. In this way, the vacuum suction inlet of the ladle is connected to the magnesium chloride pipe on the reactor cover of the reduction and distillation device through a heat-insulated 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. Among them, 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 electrolysis cell and the normal operation of the electrolysis cell; among them, the heat-insulated 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.

[0012] As an optimization, the operation platform is respectively configured with a common argon filling valve pipeline for connecting the argon filling valve near the reduction and distillation device and the magnesium electrolysis cell, and the magnesium chloride liquid in the ladle is intermittently pressed into the feeding port of the magnesium electrolysis cell through argon filling.

[0013] As an optimization, the chlorine gas collecting hood of the magnesium electrolyzer is connected in parallel through the main chlorine gas output pipe to the chlorine gas branch pipes of the electrolyzer I system and the chlorine gas branch pipes of the electrolyzer II system, which are respectively equipped 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. The chlorine gas branch pipes of the electrolyzer I system and the chlorine gas branch pipes of the electrolyzer 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 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 operating 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 compressor of the electrolyzer I system, the Roots vacuum pump type chlorine compressor of the electrolyzer II system and their parallel pipeline settings can especially switch to another parallel pipeline system immediately when one of the pipeline systems fails and needs maintenance, thus ensuring normal production and further avoiding chlorine gas leakage and 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 equipped 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.

[0014] As an optimization, based on the existing electrolyzer 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 electrolyzer, 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, 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%.

[0015] As an optimization, in the front and rear workshops of the operation platform in the longitudinal direction, two rows of running spaces for automatic trackless ladle flat cars are respectively arranged inside their reduction and distillation devices, and in the middle workshop of the operation platform in the longitudinal direction, one row of running spaces for automatic trackless ladle flat cars is respectively arranged outside the two rows of magnesium electrolysis cell devices; in this way, it can well meet the need for double-position interspersed operation of the automatic trackless ladle flat car for the reduction and 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 interspersed operation of the automatic trackless ladle flat car between reduction and distillation devices and magnesium electrolysis cell devices in different positions, and truly guarantees the online logistics needs for high-efficiency production after large-scaleization. The automatic trackless ladle flat car is an unmanned and trackless strongly insulated 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 insulation means that an outer ladle shell and a heat insulation layer are arranged outside the inner cavity of the ladle electric heating crucible, and the heater of the electric heating crucible is located at the bottom of the crucible.

[0016] That is to say, the same workshop is divided into three rows in the front, middle and rear. The reduction and distillation devices are arranged at both ends and two rows of magnesium electrolysis cell devices are arranged in the middle in the workshop. A busbar for collecting aluminum and a main chlorine pipe are arranged between the two rows of magnesium electrolysis cells arranged side by side and closely. The two sets of sponge titanium reduction and distillation production devices are respectively arranged at the front and rear sides of the two rows of magnesium electrolysis cell devices at intervals. The main equipment of each set of sponge titanium production device, namely the reduction and distillation electric furnace and its condenser, are arranged longitudinally. Overhead traveling cranes are respectively equipped in the front and rear parts of the workshop. The operation platform ventilates between the reduction and distillation devices at both ends and the magnesium electrolysis production device in the middle. The operation platform is well ventilated in summer and sealed and heat-insulated in winter. The ground passage is ventilated with cool air. The reduction and distillation device uses a large furnace of 20 tons or more to produce sponge titanium. In the production organization process, in principle, one magnesium electrolysis cell device and two sets of sponge titanium reduction and distillation production devices can be used as a small production unit to organize production, and liquid magnesium and magnesium chloride solution are circulated and balanced within this production unit to organize production. Of course, the equipment between each small production unit can also be used interchangeably. The following details the circulation and transfer methods of magnesium chloride solution and liquid magnesium in the production process of the present invention. Transfer of magnesium chloride solution: The two sets of sponge titanium reduction and distillation production devices organize production alternately, with one set in the reduction stage and the other in the distillation stage; the ladle is used to receive the magnesium chloride solution intermittently discharged from the sponge titanium production device in the reduction stage and add magnesium chloride solution to the magnesium electrolysis cell device; the transportation of magnesium chloride materials between the sponge titanium reduction and distillation production device and the magnesium electrolysis cell device is realized by transporting materials with a trackless electric flat car. Transfer of liquid magnesium: Liquid magnesium is intermittently vacuum-extracted from the magnesium electrolysis cell into the ladle crucible on the trackless electric flat car for refining, and then transported to the side of the reactor of the sponge titanium production device by its trackless electric flat car and pressed into the reactor.

[0017] The heat-exchanging waste gas from the magnesium electrolysis cells 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 to maintain stable and efficient operation. The production control method for electrolytic magnesium adopts multi-cascade automatic technology, realizing 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, safety, and stable operation of the system. Temperature detection patrol track robots are installed on the bridge of the cathode side of the electrolysis cell and the side of the reduction distillation furnace body to monitor the equipment temperature in real time. The reduction distillation device and the magnesium electrolysis cell device are arranged in the same workshop. A busbar for collecting current and a main chlorine gas pipe are arranged between two rows of side-by-side magnesium electrolysis cells. Two rows of sponge titanium reduction distillation production devices are closely arranged on one side of the two rows of magnesium electrolysis 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 electrolysis cells with an energy-saving and low-carbon daily output of 4 tons of magnesium, large reduction distillation sponge titanium furnaces with an energy-saving and low-carbon single furnace capacity of 20 tons, reactors, radiators, and other large equipment. This method has the advantages of small equipment investment and high logistics efficiency.

[0018] This new type of intelligent lifting car automatically discharges magnesium chloride, adds magnesium chloride, discharges liquid magnesium, and adds liquid magnesium. Compared with the current method in the sponge titanium industry where electrolytic magnesium (with a daily output of 3 tons of magnesium) cells and reduction distillation (a 10-ton reactor per single furnace) are separately used to produce sponge titanium, the transfer distance of magnesium chloride is shortened to within 70 meters, saving about 50% of the land, about 40% of the labor, and about 40% of the fixed asset investment, and about 40% of the labor.

[0019] After adopting the above technical solutions, the large electrolytic magnesium cell and reduction distillation furnace magnesium-titanium combined device for energy-saving and high-efficiency production of sponge titanium of the present utility model has the advantages of small equipment investment, high logistics efficiency, significantly reducing energy consumption, increasing productivity, reliable production safety, significantly reducing the labor intensity of transfer, achieving fresh air in the Gobi workshop without energy-consuming ventilation and no intense heat in summer and no severe cold in winter, improving the air comfort level in the production workshop and enhancing and guaranteeing the production efficiency of operators, and significantly saving energy and increasing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a top view structural schematic diagram of the large electrolytic magnesium cell and reduction distillation furnace magnesium-titanium combined device for energy-saving and high-efficiency production of sponge titanium of the present utility model. Figure 2 is a side view structural schematic diagram of the large electrolytic magnesium cell and reduction distillation furnace magnesium-titanium combined device for energy-saving and high-efficiency production of sponge titanium of the present utility model. Figure 3 is a side view structural schematic diagram of the electrolysis cell part and the unmanned automatic flat car part in the large electrolytic magnesium cell and reduction distillation furnace magnesium-titanium combined device for energy-saving and high-efficiency production of sponge titanium of the present utility model. Figure 4 is a side view structural schematic diagram of the reactor part and the unmanned automatic flat car part in the large electrolytic magnesium cell and reduction distillation furnace magnesium-titanium combined device for energy-saving and high-efficiency production of sponge titanium of the present utility model.Figure 5 It is a schematic side view structure diagram of the chlorine gas collecting hood part and the chlorine gas pipe valve part in the electrolytic cell of the large-scale electrolytic magnesium cell and the magnesium-titanium combined device of the reduction and distillation furnace for energy-saving and high-efficiency production of titanium sponge in the present utility model. Specific implementation mode

[0021] As shown in the figure, the large-scale electrolytic magnesium cell and the magnesium-titanium combined reduction and distillation furnace for energy-saving and high-efficiency production of titanium sponge in the utility model are arranged with a magnesium electrolysis cell device 2 and a reduction and distillation device 3 in the same rectangular workshop 1. The workshop 1 is composed of longitudinal front, middle and rear workshop parts separated by two rows of transverse columns. The longitudinal middle workshop part in the workshop 1 above the ground operation platform 9 is provided with front and rear rows of magnesium electrolysis cells 2 downward. The front and rear workshop parts of the operation platform 9 are respectively provided with front and rear edge reduction and distillation devices 3. An automatic trackless ladle flat car 4 for transporting liquid magnesium and magnesium chloride liquid between the front and rear rows of magnesium electrolysis cells 2 and the front and rear edge reduction and distillation devices 3 is configured on the operation platform 9; transverse row vertical ventilation ducts 91 are respectively arranged at the front and rear edges in the longitudinal front, middle and rear workshop parts of the operation platform 9. A longitudinal ground passage ventilation area 90 communicated with the lower end of the vertical ventilation duct 91 and longitudinal ventilation windows 92 on both sides of the upper workshop 1 on the platform cooperating with the upper end of the vertical ventilation duct 91 for ventilation are respectively arranged under and above the operation platform 9 in the workshop 1. The workshop 1 is equipped with a hoisting crane. Side lifting openings 39 for the hoisting of the reduction and distillation reactor 30 to pass through are respectively arranged on both sides between the front and rear rows of magnesium electrolysis cells 2 and the front and rear edge reduction and distillation devices 3 on the operation platform 9. The reduction and distillation device and the magnesium electrolysis cell device are arranged in the workshop at the same time. A current-collecting aluminum busbar and a chlorine main pipe are arranged between the two rows of juxtaposed magnesium electrolysis cells. The two rows of titanium sponge reduction and distillation production devices are closely arranged on one side of the two rows of magnesium electrolysis cell devices. In this way, after the transverse row 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 is no dead angle in the ventilation in the workshop, the air comfort in the production workshop is significantly improved, and the production efficiency of the operators is guaranteed and improved. In this way, compared with the existing structure composed of two workshop parts, the workshop composed of longitudinal front, middle and rear workshop parts separated by two rows of transverse columns has the middle-positioned front and rear rows of magnesium electrolysis cells arranged in the same middle workshop part, which can greatly simplify the circuit pipeline setting of the magnesium electrolysis cells, significantly improve the support capacity of the large-scale circuit pipeline, and is very beneficial to energy conservation and efficiency improvement under the capacity expansion of the electrolytic cells. The longitudinal middle workshop part in the workshop above the ground operation platform is provided with two rows of juxtaposed middle-positioned front and rear rows of magnesium electrolysis cells downward, which is very beneficial to the integrated and efficient control and high-quality operation of the magnesium electrolysis cells after being enlarged. The front and rear workshop parts of the operation platform are respectively provided with front and rear edge reduction and distillation devices, and 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 the efficient transfer of the automatic trackless ladle flat car.The operating 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 operating 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 conducive 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 where the applicant's factory building is located. That is, in summer, cold air from the Gobi Desert at night is stored under the operating platform, and in the daytime, cool air is provided to the upper layer of the operating platform through convection. In winter, the upper workshop of the operating platform is heated by the heat emitted by the equipment at night, and in the daytime 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 operating 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 hoisting of the reduction and distillation reactors to pass through, which does not interfere with the normal operation trajectory of the automatic trackless lifting ladle flat car. For the reactor descending through the side-mounted hoisting opening, there is still a spacious working space for clearing the sponge titanium from the reactor under the operating 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, while ensuring large-scale high-production efficiency, significantly saving investment, and achieving energy conservation and efficiency improvement; the reduction and distillation device and the magnesium electrolysis device operate on the same operating 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 high production efficiency. In short, it has the advantages of small equipment investment, high logistics efficiency, significantly reducing energy consumption, improving productivity, reliable production safety, significantly reducing the labor intensity of transfer, achieving fresh air in the Gobi Desert factory building and no intense heat in summer and no severe cold in winter without energy-consuming ventilation, improving the air comfort of the production workshop and improving and ensuring the production efficiency of the operators, and significantly saving energy and increasing efficiency.

[0022] Specifically, the reduction and distillation device 3 includes an inner jacket heating furnace 31, a reactor 30, and an outer condenser that are movably connected through a longitudinal aisle heater. The outer shell of the jacket heating furnace 31 is of a vacuum jacket heat insulation type, and the body of the reactor 30 is in the shape of a stacking platform that can easily lift out the sponge titanium ingot with a crane. In the middle of the strong support and high-throughflow sieve plate of the reactor 30, a conical cylinder radiator is provided. The outer peripheral wall of the conical cylinder radiator is provided with upper and lower layer area transverse through holes that are circumferentially spaced and distributed for realizing cold and hot convection during the reduction stage, improving the quality of sponge titanium, and achieving energy conservation.

[0023] Specifically, the electrolysis chambers and magnesium collection chambers of the two rows of magnesium electrolysis cell devices 2 are arranged facing the middle busbar, the chlorine main pipe, and the two ends of the reduction and distillation device 3 respectively, which can significantly improve the space efficiency; the longitudinal side wall ventilation windows 92 are adjustable-opening ventilation louvers; or adjustable-opening ventilation louvers are respectively provided on the four side walls of the plant above the operation platform. It can also be designed that the two sides of the operation platform layer are flat-pull opposite windows. Open the windows in summer, and the employees will feel very comfortable working on the transparent platform. Close the opposite windows tightly in winter to keep warm.

[0024] Specifically, the liquid magnesium output pipe of the magnesium collection chamber of the magnesium electrolysis cell 2 is connected to the heat preservation and heating pipeline 41 leading to the automatic trackless ladle flat car 4 through a union seal valve mechanism. The ladle 40 configured on the automatic trackless ladle flat car 4 is an electric heating crucible 42 with a ladle shell and a heat insulation layer outside the inner cavity. The ladle heat insulation and sealing cover 43 is configured with a conveying motor 44 to drive and seal the metering infusion pump 45 extending into the lower part of the ladle 40. The discharge pipe 46 connected to the output port of the metering infusion pump 45 is hermetically passed upward through the ladle heat insulation and sealing cover 43 and then connected to the heat preservation and heating pipeline 41. The heater 47 of the electric heating crucible 42 is located at its bottom. The heater 47 of the heat preservation and heating pipeline 41 is located in its downstream section.

[0025] Specifically, the operation platform 9 is configured with a magnesium chloride vacuum system connecting pipe 51 of the magnesium chloride vacuum filter tank 5 near the reduction and distillation device 3. The vacuum suction outlet of the ladle 40 of the automatic trackless ladle flat car 4 is connected to the suction inlet of the magnesium chloride vacuum filter tank 5 through a vacuum pipeline 54 provided with a ladle negative pressure detection pressure transmitter 52 and an automatic negative pressure extraction pneumatic valve 53; the vacuum suction inlet of the ladle 40 is connected to the magnesium chloride pipe on the reactor cover 32 of the reduction and distillation device through a heat insulation and magnesium chloride liquid conveying pipe 6 provided with a siphon automatic argon filling valve 61, a siphon high-temperature automatic cut-off valve 62, and an automatic siphon-breaking argon filling valve 63 in sequence from upstream to downstream. The operation platform 9 is respectively configured with a common argon filling valve pipeline for connecting the argon filling valves near the reduction and distillation device 3 and the magnesium electrolysis cell 2, and the magnesium chloride liquid in the ladle 40 is intermittently pressed into the feeding port of the magnesium electrolysis cell 2 through argon filling.

[0026] Specifically, the chlorine gas collecting hood 20 of the magnesium electrolysis cell is connected in parallel through the chlorine gas output main pipe 21 to the chlorine gas branch pipe 211 of the electrolysis cell I system and the chlorine gas branch pipe 212 of the electrolysis cell II system respectively provided with a pneumatic switch valve 221 for the chlorine gas branch pipe of the electrolysis cell I system and a pneumatic switch valve 222 for the chlorine gas branch pipe of the electrolysis cell II system in the middle section. The chlorine gas branch pipe 211 of the electrolysis cell I system and the chlorine gas branch pipe 212 of the electrolysis cell II system are respectively connected to the chlorine gas main pipe 241 of the I system and the chlorine gas main pipe 242 of the II system through a Roots vacuum pump type chlorine compressor 231 of the electrolysis cell I system and a Roots vacuum pump type chlorine compressor 232 of the electrolysis cell II system.

[0027] Specifically, based on the existing electrolytic cell 2 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 2, 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 bridge bricks of the middle load-bearing wall adopt single-sided edge bricks. A method of automatic online switching and adjustment of the 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%.

[0028] Specifically, in the longitudinal front and rear workshops of the operation platform 9, two rows of transverse running spaces for the automatic trackless ladle flat cars 4 are respectively arranged inside the reduction and distillation device 3. In the longitudinal middle workshop of the operation platform 9, one row of transverse running spaces for the automatic trackless ladle flat cars 4 is respectively arranged outside the two rows of magnesium electrolytic cell 2 devices; the automatic trackless ladle flat car 4 is an unmanned, trackless, strongly 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 at 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 magnesium electrolytic cells arranged side by side. 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 energy-saving and low-carbon production of 4 tons of magnesium per day, large reduction and distillation sponge titanium furnaces with a single furnace capacity of 20 tons for energy-saving and low-carbon production, reactors, radiators and other large equipment. It has the advantages of small equipment investment and high logistics efficiency.

[0029] That is to say, for the layout of the titanium sponge production device and the magnesium electrolysis cell device in the production of the new type of titanium sponge, the titanium sponge production device and the magnesium electrolysis cell device are arranged 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 furnaces of each reduction and distillation titanium sponge production device and the condenser of the titanium sponge production device are longitudinally arranged 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 longitudinally arranged workshop parts, and each workshop part is equipped with an overhead crane of corresponding tonnage for hoisting reactors, assembling reactors, and hoisting during maintenance in the production process. 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 filling argon into the ladle. Ventilation areas are respectively set for the reduction and distillation devices on both sides of the workshop and the magnesium electrolysis production device. The operation platform layer is well-ventilated in summer and sealed and thermally insulated in winter. The reduction and distillation device uses large furnaces of 20 tons or more to produce titanium sponge.

[0030] In summary, the large-scale electrolytic magnesium cell and reduction and distillation furnace magnesium-titanium combined device for energy-saving and high-efficiency production of titanium sponge of the present utility model has the advantages of small equipment investment, high logistics efficiency, significant reduction in energy consumption, increased productivity, reliable production safety, significant reduction in the labor intensity of transportation, fresh air in the Gobi workshop without energy-consuming ventilation, no intense heat in summer and no severe cold in winter, improved air comfort in the production workshop, improved and guaranteed production efficiency of operators, and significant energy conservation and efficiency increase.

Claims

1. A large-scale magnesium-titanium combined device for energy-saving and efficient production of titanium sponge, with a magnesium electrolysis cell device and a reduction and distillation device arranged in the same rectangular workshop, characterized in that The workshop is composed of longitudinal front, middle and rear workshop parts separated by two rows of transverse columns. In the longitudinal middle workshop part above the ground operation platform in the workshop, front and rear rows of magnesium electrolyzers are arranged downward. In the longitudinal front and rear workshop parts of the operation platform, front and rear side reduction and distillation devices are respectively arranged. An automatic trackless ladle flat car for transporting liquid magnesium and magnesium chloride liquid between the front and rear rows of magnesium electrolyzers and the front and rear side reduction and distillation devices is configured on the operation platform. Transverse vertical ventilation ducts are respectively arranged at the front, middle and rear of the longitudinal operation platform. Longitudinal ground channel ventilation areas connected to the lower ends of the vertical ventilation ducts and longitudinal ventilation windows on both side walls of the workshop above the operation platform for ventilation in cooperation with the upper ends of the vertical ventilation ducts are respectively arranged under and above the operation platform in the workshop. A hoisting overhead crane is configured in the workshop. Side lifting openings for the hoisting of reduction and distillation reactors are respectively arranged on both sides between the front and rear rows of magnesium electrolyzers and the front and rear side reduction and distillation devices on the operation platform.

2. The large-scale magnesium-titanium integrated device for energy-saving and high-efficiency production of titanium sponge according to claim 1, wherein The reduction and 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 insulation type, and the body of the reactor is in a stack shape that can easily lift out the titanium sponge ingot by an overhead crane.

3. The large-scale magnesium-titanium integrated device for energy-saving and high-efficiency production of titanium sponge according to claim 2, characterized in that A cone-shaped radiator is arranged in the middle above the sieve plate with strong support and high through-flow rate of the reactor. Transverse through-holes in the upper and lower layer areas with circumferential interval distribution are arranged on the outer peripheral wall of the cone-shaped radiator to realize the cold and hot convection in the reduction stage, improve the quality of titanium sponge and achieve energy conservation.

4. The large-scale magnesium-titanium integrated device for energy-saving and efficient production of titanium sponge according to claim 1, characterized in that The electrolysis chambers and magnesium collection chambers of the two rows of magnesium electrolyzer devices are respectively arranged facing the middle busbar for current collection, the chlorine main pipe and the reduction and distillation devices at both ends; the longitudinal ventilation windows on both side walls of the workshop above the operation platform are adjustable-opening ventilation shutters; or adjustable-opening ventilation shutters are respectively arranged on the four side walls of the workshop above the operation platform.

5. The large-scale magnesium-titanium combined device for energy-saving and efficient production of titanium sponge according to claim 1, characterized in that The liquid magnesium output pipe of the magnesium collection chamber of the magnesium electrolyzer is connected to the heat preservation and heating pipeline leading to the automatic trackless ladle flat car through a flexible joint type sealing 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 and sealing cover is configured with a metering infusion pump driven by a conveying motor to be hermetically extended into the lower part of the ladle. The discharge pipe connected to the output port of the metering infusion pump is hermetically passed through the ladle heat insulation and sealing cover upward and then connected to the heat preservation and heating pipeline.

6. The large-scale magnesium-titanium integrated device for energy-saving and efficient production of titanium sponge according to claim 1, wherein The operation platform is configured with a magnesium chloride vacuum system connection pipe with an attached magnesium chloride vacuum filter tank near the reduction and distillation device. The vacuum suction outlet of the ladle of the automatic trackless ladle flat car 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 is connected to the magnesium chloride pipe on the reactor cover 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 and argon filling valve from upstream to downstream.

7. The large-scale magnesium-titanium integrated device for energy-saving and high-efficiency production of titanium sponge according to claim 6, characterized in that The operation platform is respectively configured with a common argon filling valve pipeline for connecting the argon filling valves near the reduction and distillation device and the magnesium electrolyzer, and the magnesium chloride liquid in the ladle is intermittently pressed into the feeding port of the magnesium electrolyzer through argon filling.

8. The large-scale magnesium-titanium combined device for energy-saving and high-efficiency production of titanium sponge according to claim 1, characterized in that The chlorine gas collecting hood of the magnesium electrolysis cell is connected in parallel through the main chlorine gas output pipe, and the chlorine gas branch pipes of the electrolysis cell I system and the chlorine gas branch pipes of the electrolysis cell II system with pneumatic on-off valves are respectively provided in the middle section. The chlorine gas branch pipes of the electrolysis cell I system and the chlorine gas branch pipes 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 the Roots vacuum pump type chlorine compressor of the electrolysis cell I system and the Roots vacuum pump type chlorine compressor of the electrolysis cell II system.

9. The large-scale magnesium-titanium integrated device for energy-saving and efficient production of titanium sponge according to claim 1, wherein The operation platform is provided with two rows of horizontal automatic trackless ladle car running spaces on the inner side of its reduction and distillation device in the front and rear workshops in the longitudinal direction, and one row of horizontal automatic trackless ladle car running spaces is respectively provided on the outer sides of the two rows of magnesium electrolysis cell devices in the middle workshop in the longitudinal direction; the automatic trackless ladle car is an unmanned and trackless strongly heat-insulated intelligent ladle car that can automatically discharge magnesium chloride, automatically add magnesium chloride, automatically discharge liquid magnesium, and automatically add liquid magnesium.

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