2703results about "Melt-holding vessels" patented technology

The invention relates to the technical field of thin-strip cast rolling, and provides a thin-strip cast rolling tundish continuous casting device and method.The thin-strip cast rolling tundish continuous casting device comprises a base frame horizontally installed on the surface of a foundation, and the base frame is provided with a flow distribution ladle, a tundish and a large ladle from bottom to top; an adjusting mechanism is arranged below the position, where the casting position is arranged, of the base frame, the adjusting mechanism comprises two limiting plates which are symmetrically arranged, and one side of the middle of each limiting plate is fixedly connected with a second motor for driving a crystallizer roller; and a baking oven fixed on the placing rack is arranged above the middle parts of the two motors II. According to the method, molten steel qualified in smelting is directly poured into the molten pool defined by the two crystallization rollers rotating oppositely and the side sealing plates through the large ladle, the tundish and the flow distribution system, the molten steel is cooled through the two crystallization rollers rotating oppositely to form the steel belt with the thickness of 1-5 mm, the production cost can be saved, the casting continuity is improved, the production efficiency is improved, and the yield is increased.

The invention discloses a steel ladle tipping transport vehicle and a hot repair method, and belongs to the technical field of continuous casting of ferrous metallurgy. The steel ladle tipping transport vehicle comprises a vehicle body, a tipping saddle and a rotating arm oil cylinder, the front part of the tipping saddle is hinged to the vehicle body, so that the tipping saddle is convenient to overturn; the output end of the rotating arm oil cylinder is hinged to the middle of the tipping saddle to provide tipping force. The tipping saddle is provided with a clamping groove with an upward notch, and the notch is matched with steel ladle seats on the two sides of the steel ladle in shape, so that the tipping saddle and the steel ladle seats are clamped conveniently. In the specific use process, the clamping groove is connected with the steel ladle base in a clamped mode, the tipping saddle stably bears the steel ladle and drives the steel ladle to synchronously transport and roll over, the tumbler oil cylinder enables the steel ladle to roll over, the vehicle body bears the steel ladle to move between the hot repair station and the molten steel receiving span, transportation and hot repair operation of the steel ladle on the vehicle body are achieved, safety and reliability are achieved, use of a crown block is reduced, and working efficiency is improved. The technical problems that the molten steel receiving span temperature is high, the working environment is poor, the hoisting travel is long and the safety is low during hot repair of an existing steel ladle are solved.

The utility model discloses a tundish dry material automatic feeding device which comprises a stock bin, a discharging channel is arranged at the bottom of one side of the stock bin, a partition plate, a screening funnel and a feeding hopper are sequentially arranged in the stock bin from top to bottom, the partition plate is fixedly connected with the inner wall of the stock bin, and the screening funnel and the feeding hopper are both movably connected with the inner wall of the stock bin. Bagged dry materials are placed in the stock bin, wall breaking treatment is conducted on the bagged dry materials through the material supplementing mechanism, the dry materials fall down from the strip-shaped holes after packaging bags are scratched, the materials are screened after being filtered through the screening funnel, residual impurities can be discharged from the cleaning opening, and the screened materials are conveyed into the discharging channel through the feeding hopper. The material guiding thin pipe and the spiral auger are used for controlling the downward sliding speed and flow of powder, the protective cover communicated with the output end of the conveying hose is matched to convey the material to the tundish, raised dust can be covered, flying dust is reduced, the material supplementing process is efficient, time and labor are saved, and safety is improved.

The utility model relates to the technical field of steel smelting, in particular to a steel ladle air brick cleaning device which comprises an air supply mechanism, a conveying mechanism, an air blowing mechanism, an adjusting mechanism and a display mechanism, the display mechanism is fixedly connected with the conveying mechanism, the air blowing mechanism is fixedly connected with the conveying mechanism, and the conveying mechanism is fixedly connected with the air supply mechanism. The adjusting mechanism comprises an adjusting seat, an adjusting ring, a vertical rod and an adjusting inner cylinder, the adjusting inner cylinder can change the conveying direction of gas in the conveying mechanism under the rotation of the adjusting ring, so that the conveying conditions of different gases in the same pipeline are realized, the design is simple to operate, and the problems that oxygen and nitrogen need to be separately conveyed and blown by working personnel, and the working efficiency is low are solved. The connecting pipelines are more, and the use is more inconvenient.

The utility model discloses an argon bottom blowing device for improving the purity of molten steel. The argon bottom blowing device comprises a tundish, a water gap is formed in one side of the bottom face of the tundish, an electromagnetic stirrer is arranged on the outer side of the water gap, an air brick is arranged above the water gap in the tundish, and an argon conveying pipe is arranged at the bottom of the air brick. The gas permeable brick is arranged above the water gap, argon is blown into molten steel, the argon directly acts on molten steel flow, a gas curtain wall is formed around the water gap, floating and removal of inclusions are promoted, the purity of the molten steel is improved, the gas permeable brick is used in cooperation with the electromagnetic stirrer, the molten steel can be effectively stirred, a stirring blind area is eliminated, and the service life of the molten steel is prolonged. And the heat transmission of the molten steel in the tundish is more uniform. And moreover, the uniform molten steel flowing is beneficial to keeping the water gap unobstructed, and the water gap is prevented from being blocked by inclusions or cold steel in the molten steel.

The invention provides a metal continuous casting device, and relates to the field of metal casting. The metal continuous casting device comprises a hot melting unit, a feeding unit is arranged above the hot melting unit, a heat preservation unit is arranged below the hot melting unit, a vibration crystallizer is arranged below the heat preservation unit, and a dummy ingot sealing unit is arranged at the outlet end of the vibration crystallizer. The vacuum pumping unit is communicated with the hot melting unit, the feeding unit and the heat preservation unit, the hot melting unit comprises a smelting cavity and a smelting crucible fixedly installed in the smelting cavity, the center of the bottom end of the smelting crucible is open and communicated with the heat preservation unit through a long nozzle, and a first stopper mechanism is fixedly installed above the smelting cavity. According to the metal continuous casting device, the smelting crucible is arranged in the smelting cavity, and the flowing of molten copper is controlled through the first stopper rod mechanism, so that a structure for driving the smelting crucible to feed can be reduced, feeding can be controlled more conveniently, and meanwhile, the device can be kept in a vacuum state conveniently.

The utility model belongs to the technical field of metallurgical industry production equipment, and discloses a molten iron car storage battery power supply capping structure which comprises a car frame, a molten iron tank is arranged on the car frame, a capping device is arranged at a tank opening of the molten iron tank, and a hydraulic station is arranged on the car frame and located on one side of the molten iron tank. The hydraulic station is used for supplying energy to the capping device and controlling the capping device to be opened or closed, a containing cabin is arranged on the frame and located in the area below the hydraulic station, a battery pack and a control box are arranged in the containing cabin, the battery pack is used for supplying power to the control box, and the control box is used for sending an action instruction to the hydraulic station. According to the hot metal car storage battery power supply capping structure, the independent power supply and control functions of the capping device of the hot metal car are achieved through the battery pack and the control box, the problems that fixed-point parking power connection and marshalling connection are needed are solved, the field manual operation difficulty is lowered, an electrical control system is simplified, and feasibility is provided for achieving factory unmanned operation.

The invention relates to the field of furnace lining materials, in particular to a rapid repairing material for a tapping hole and a furnace lining of an intermediate frequency furnace. The rapid repairing material comprises the following components in parts by weight: 50-70 parts of tabular corundum, 10-20 parts of fused magnesite, 8-15 parts of alumina micro powder, 3-8 parts of nano zirconia, 5-12 parts of silicon carbide, 10-15 parts of silica sol and 2-5 parts of a reinforcing agent. Wherein the reinforcing agent is titanium calcium aluminate coated with chromium nickel boride. The tabular corundum is mainly used as an integral framework; the fused magnesite is matched with the alumina micro powder to form magnesium aluminate spinel with a high melting point; the nano zirconium oxide can fill pores and is excellent in toughness; the silicon carbide has the advantages of high hardness, high thermal conductivity and high melting point; the reinforcing agent is titanium calcium aluminate coated with chromium nickel boride, although the adding amount is small, the high-temperature strength, toughness and thermal shock resistance of the repairing material can be remarkably improved, and especially the long-term corrosion resistance can be remarkably improved.

The invention relates to the technical field of metal casting, in particular to a full-automatic pouring method of an anode carbon block, which comprises the steps of molten iron melting treatment, molten iron transfer, molten iron weighing and heat preservation, troubleshooting before pouring and pouring, in the process of molten iron weighing and heat preservation, a weighing system monitors the weight of molten iron in a capacity bin, and in the process of molten iron weighing and heat preservation, the weight of the molten iron in the capacity bin is monitored; the medium-frequency induction coil is used for heating and heat preservation of molten iron in the capacity bin, the heat preservation power is adjusted according to the molten iron temperature fed back by the temperature monitoring system, in the pouring process, the visual system is used for confirming the positions of the chute mechanism and the anode carbon block, and an air pressure sensor and a liquid level position sensor are integrated; according to the full-automatic pouring method for the anode carbon block, the liquid level of molten iron in the liquid outlet groove is kept within the set height range all the time, finally, whether the pouring liquid level reaches the set required value or not is detected through a visual system, and the full-automatic pouring method for the anode carbon block is high in automation degree, good in stability and capable of effectively improving the connection quality of the anode carbon block and the anode claw and the production efficiency.

The utility model belongs to the technical field of steel ladle design and automation, and particularly relates to a mounting assembly for an oil cylinder structure and an automatic steel ladle mechanism assembling system.The mounting assembly comprises a tail end clamp and a mounting base, the tail end clamp comprises a clamping body and a controllable magnetic attraction body, a groove is formed in the clamping body, and the controllable magnetic attraction body is connected to one side of the clamping body; the oil cylinder mounting seat comprises a columnar positioning support body, and the positioning support body comprises a connecting section matched with the groove; and the connecting section can be adsorbed in the groove under the magnetic force generated by the controllable magnetic attraction body. According to the installation assembly, connection is achieved in a magnetic attraction mode, complex processes such as bolts and welding which are possibly needed in a traditional installation method are omitted, and therefore the installation process and the structural complexity are simplified, and the operation difficulty is further reduced. And the clamping and releasing processes become simple and rapid through the magnetic adsorption connection mode. When the oil cylinder needs to be clamped or released, the oil cylinder can be rapidly installed only by adjusting magnetic force or simply disassembling the connecting section.

The invention discloses a novel quick-change mechanism with a flow control function for a tundish. The novel quick-change mechanism comprises a mounting part, a sliding part, a pressing part, a first driving part and a second driving part. And the functions of the stopper rod opening and closing device are integrated on the tundish quick-change nozzle device, so that the investment, the installation site, the maintenance cost, the spare part site and the cost of a set of equipment are saved. The two sets of equipment are combined into a whole, so that the number of operators in a steel mill is reduced, and meanwhile, preparation is made in advance for the subsequent steel mill if intelligent and automatic control over steel-making continuous casting is adopted, and the positive effect is achieved.

The invention relates to a method for continuous casting of metal, in particular steel, wherein liquid metal is conducted from a movably mounted ladle (2) into a continuous casting tundish (3) by means of a shroud (4) and is conducted from the continuous casting tundish (3) into a casting mould (16) via an outlet (14), the continuous casting tundish (3) compensating for the interruptions when the ladles (2) are exchanged, and the ladles (2) being mounted in a movement device, wherein, to ensure a high separation efficiency for cast metal charges that follow one another, a singular rolling kind of flow is created in the continuous casting tundish (3), and the invention also relates to a fitting (22, 30) for the continuous casting tundish (3) and to a continuous casting plant (1) comprising the continuous casting tundish (3).

The utility model relates to the technical field of bearing disassembly metallurgy vehicle automatic joint devices, in particular to a double-four-connecting-rod lifting steel ladle bottom argon blowing automatic joint device which comprises a bottom argon blowing arc-shaped male joint, a high-temperature-resistant seal and a supporting frame, and the bottom argon blowing arc-shaped male joint is arranged above a fixing rod and can slide up and down. The device is characterized in that a four-connecting-rod lifting mechanism is arranged in the supporting frame, and the four-connecting-rod lifting mechanism is connected with the fixing rod; the bottom argon blowing arc male connector and the fixing rod are directly provided with a compression spring. The utility model has the advantages that: firstly, the spherical guide of the male connector is utilized, the sealing connection of the conical spring is reliable, the ladle car can be transformed and used on the basis of the original ladle car, the manufacturing cost is low, the sealing is reliable, steel slag blocks can conveniently flow down along the conical surface, the conical surface sealing is not easy to remain steel slag, and the conical surface is firmly matched without air leakage; and secondly, the device is simple in structure and convenient to transform and install, the working intensity of the bottom argon blowing joint of a maintainer is reduced, and the steelmaking labor productivity is improved.

The invention relates to the technical field of steelmaking, in particular to a treatment method for a frozen hot-metal bottle. The method comprises the following steps: firstly, treating the frozen tank surface of the hot-metal tank, melting the frozen tank surface in a small area by using high-temperature heat generated by iron oxidation, burning a plurality of small deep pits, increasing the contact area of hot-melt molten steel and the frozen tank surface, avoiding layering, and quickly melting the frozen tank surface; secondly, hot melting treatment is carried out on molten steel of a freezing tank of the hot metal tank, and the freezing tank meets the iron folding requirement by tapping steel into the freezing tank. Thirdly, carrying out thermal cycle treatment on the frozen molten iron of the molten iron tank, carrying out hot melting on the molten iron, carrying out frozen tank iron folding, immediately adding the molten iron into the converter after iron folding, continuously carrying out iron folding after iron adding, repeating for several times until the turnover requirement is met, finishing the frozen molten iron tank treatment, and carrying out normal turnover of the molten iron tank. The treatment period is 12 hours or below, no unconventional operation exists, the potential safety hazard is low, normal turnover of the hot-metal ladle and the turnover rate of the hot-metal ladle can be achieved, the production operation rate is increased, and smooth production is guaranteed.

The secondary combustion type burner for the baking ladle comprises a smoke column, a baffle, a burner nozzle and the baking ladle, the baffle is in separable airtight connection with the opening side of the baking ladle, and the smoke column and the burner nozzle are arranged on the baffle; the flue gas column comprises a flue gas column main body which is inserted into the baking ladle inner cavity and is coaxial with the baking ladle inner cavity, a flue is arranged in the center of the flue gas column main body, and the flue penetrates through the baffle to enable the baking ladle inner cavity to be communicated with the outside; a preheating gas channel is arranged in the side wall of the flue gas column; the burner comprises a burner body connected with the baffle, and the burner body comprises a combustion chamber and an air channel. One end, far away from the baking ladle, of the combustion chamber is provided with an oxyhydrogen channel and a gas channel, and the other end is a flue gas port inserted into an inner cavity of the baking ladle; the air channel is arranged outside the combustion chamber, and one end of the air channel communicates with the hot air pipe. According to the combustor, a secondary combustion mode is adopted, good temperature uniformity is kept while the combustion temperature is increased, smoke is fully utilized for preheating, the temperature rising speed is increased, and energy consumption is reduced.

The invention relates to the technical field of refractory materials, in particular to an antioxidant and application thereof in steel ladle slag line bricks, and the antioxidant comprises a Si / SiC multiphase material, modified nano Al2O3 and CaF2; the ladle slag line brick comprises an antioxidant, fused magnesite, crystalline flake graphite and phenolic resin. Si-SiC compound waste is subjected to magnetic separation and acid pickling, then a SiO2 passivation layer is formed through pre-oxidation, moisture and air in the storage period are isolated, and a titanate coupling agent is introduced to improve the wettability and compatibility with phenolic resin. P2O5 released by phosphate on the surface of the modified nano Al2O3 at a high temperature reacts with alkali (earth) metal migrated to a SiO2 oxide layer to prevent the alkali (earth) metal from forming a low-melting-point eutectic substance, CaF2 reacts with SiO2 along with temperature rise, a passivation layer is broken, internal Si and SiC are directly exposed, and boron oxide of the modified nano Al2O3 remarkably reduces activation energy and a temperature threshold value of the reaction of CaF2 and SiO2.

The utility model discloses a movable steel ladle casting device which comprises a steel ladle and a barrel cover, the bottom of the steel ladle is provided with a supporting assembly, the supporting assembly comprises a base and a supporting plate, the outer side of the steel ladle is provided with a rotating assembly, the rotating assembly comprises a rotating roller and a worm gear insection, the base is provided with a driving assembly, and the driving assembly is connected with the supporting plate. The movable steel ladle casting device comprises a base, a driving assembly is installed on the base and comprises a first motor and a worm, a sliding assembly is installed on the base and comprises a sliding sleeve and a sliding rod, and a pushing assembly is installed on the inner side of the sliding sleeve. The sliding rods drive the rolling wheels to move leftwards, the supporting range of the base is widened, then the stability of the gravity center of the steel ladle is improved, the situation that the steel ladle topples over when molten steel is toppled over is avoided, the working safety of the steel ladle is effectively guaranteed, and the steel ladle toppling device is suitable for transporting and pouring the molten steel.

The invention discloses an automatic transfer robot for a ladle. The automatic transfer robot comprises a robot body, a gate-type mechanical arm system, a ladle clamping and overturning assembly, an intelligent sensing system and an electrical control system. A servo-driven X-Y plane moving device is arranged at the bottom of the robot body, so that two-dimensional free movement is realized; the door type mechanical arm system comprises symmetrical mechanical arms, a connecting beam and a lifting and telescopic driving assembly and adapts to different positions. The clamping turnover assembly adopts a three-point positioning clamping and servo turnover device and integrates a manual switching system and a weighing system, so that accurate dumping is realized; the intelligent sensing system detects the positions of an iron outlet and a material receiving opening through laser vision; and the electrical control system cooperatively controls each component to realize automatic butt joint. The robot further comprises an automatic ladle cover opening and closing mechanism and a safety protection system, and safety is improved. Through automatic and intelligent design, the molten iron transfer safety and stability are improved, and the system is suitable for casting workshops and particularly suitable for transformation of old workshops.

The invention relates to the field of ladle baking devices, in particular to a heat accumulating type natural gas ladle baking device which comprises a steel ladle heating furnace and further comprises a ladle baking cover, the front end of the steel ladle heating furnace is fixedly connected with the ladle baking cover, reinforcing rods are fixedly installed at the left end and the right end of the ladle baking cover, and an installation frame is arranged at the rear end of the steel ladle heating furnace. A hydraulic lifting platform is arranged at the lower end of the steel ladle heating furnace, the two mounting frames are located on the left side and the right side of the steel ladle heating furnace, a heat preservation block is fixedly mounted at the upper end of the ladle baking cover, and a temperature measuring sensor is arranged at the upper end of the heat preservation block. After natural gas and combustion-supporting air are mixed, the high temperature is kept, heat needed by combustion is reduced, energy consumption is reduced, switching between the two heat storage cavities is achieved through the multiple control valves, the controller is matched for control, exchange type heat storage and combustion are achieved, the waste heat recovery effect is improved, meanwhile, the heating effect on the combustion-supporting air is guaranteed, and the energy consumption is reduced. The pouring construction time is prolonged, and the practicability is improved.

The invention relates to the technical field of thin-strip continuous casting production, in particular to a method for automatically controlling the height of a molten pool in the double-roller thin-strip continuous casting production process, which comprises the following steps: arranging a laser ranging module and a visual perception module; processing by an embedded processing module; establishing a molten pool height dynamic prediction model by adopting a deep learning algorithm, and outputting a molten pool height prediction value; self-adaptive sliding mode control is adopted as a main controller, and the displacement amount of the servo hydraulic stopper rod is output; and controlling the height of the molten pool based on the displacement of the servo hydraulic stopper rod. According to the method, laser is used for providing accurate distance reference, visual sensing is used for providing molten pool liquid level information, and the detection precision is improved and environmental interference is reduced through a machine vision algorithm; based on the process parameters and the real-time information of the sensor, constructing a molten pool height prediction model by using a neural network algorithm with physical constraints; and a reinforcement learning optimizer is added to adjust sliding-mode control parameters online, so that the sliding-mode control parameters adapt to working condition changes to carry out high-precision and fast-reaction molten pool height control.

The invention relates to the field of metallurgy, in particular to a construction technology of a continuous casting tundish dry material and a tundish. According to the continuous casting tundish dry material construction technology, the thickness of a certain dry material is increased, the existing thickness of a tundish wall dry material is adjusted to be larger than or equal to 60 mm from 50-55 mm, and the thickness of a tundish bottom dry material is adjusted to be larger than or equal to 90 mm from 60 mm; meanwhile, the condition of the vibration process is adjusted, the original vibration time of 3 min is adjusted to be larger than or equal to 8 min, and vibration motors are changed into double motors; the baking conditions are adjusted, the baking time is shortened from original 70-90 min to 40-60 min, and the cooling and demolding time is prolonged to be larger than or equal to 4 h; by regulating and controlling the factors, the erosion resistance of the whole dry material is improved, and the service life of the dry material is further prolonged.

To suppress embrittlement of a powder line part material by production of zirconium carbide inside a powder line part, and occurrence of sudden troubles such as hole opening of the powder line part caused by the embrittlement.SOLUTION: A molten steel flow passage 5 includes an upstream flow part 50 provided with an inflow port 3, a downstream flow part 52 provided with a discharge hole 4, and a boundary part 51 in a boundary between the upstream flow part 50 and the downstream flow part 52, wherein a circle equivalent diameter DU of the upstream flow part 50 is set to be larger than a circle equivalent diameter DL of the downstream flow part 52, the boundary part 51 is provided at a position higher than the powder line part 6, and a lining layer 7, which is composed of a material different from a zirconia / graphite material and has thickness of 8 mm or more, is provided inside the power line part 6.SELECTED DRAWING: Figure 1

The application discloses a tundish dam structure with a flow guide pipe, which comprises a straight wall, a flow guide hole, a side wall, a dam and a flow guide pipe. The straight wall, the side wall and the dam are an integrated structure, and the integrated structure is embedded in the inner wall of the tundish at both ends. The straight wall in the inner cavity of the dam is provided with a plurality of flow guide holes, and the flow guide pipe is embedded on the flow guide hole. The application effectively promotes the removal of inclusions in the impact area and the casting area of the tundish.

The invention relates to the technical field of ladle bricks, and particularly discloses a low-aluminum refined ladle brick and a preparation method thereof.The low-aluminum refined ladle brick is prepared by mixing, by mass, 10-15 parts of fused magnesite with the particle size smaller than or equal to 0.088 mm, 30-40 parts of fused magnesite with the particle size ranging from 1 mm to 3 mm, 20-25 parts of fused magnesite with the particle size ranging from 3 mm to 5 mm, 5-8 parts of a composite binder, 2-3 parts of white clay and 0.5-1 part of carbon black; the preparation method comprises the following steps: taking fused magnesite, white clay, carbon black and a composite binder, mixing, homogenizing, carrying out mold pressing and heat treatment, and standing overnight at 45-55 DEG C, thereby obtaining the product, wherein the composite binder is obtained by mixing aluminum carbon silicide mixed powder and asphalt powder, then performing spray granulation to obtain mixed microspheres, humidifying the mixed microspheres, then mixing the mixed microspheres with pretreated silicon carbide fibers, rolling the mixed microspheres, and finally performing remelting and cooling treatment. By using the composite binder prepared by the invention, the oxidation resistance of the brick body can be improved, and the generation of microcracks can be inhibited.

The invention relates to an automatic guided vehicle for molten metal transfer and a working method, and belongs to the technical field of automatic transportation equipment. The vehicle comprises a mobile vehicle body, and further comprises a bag cover opening and closing device, a butt joint bearing part, a storage battery mounting assembly, a dust removal system, a navigation obstacle avoidance system and a control system which are arranged on the mobile vehicle body, and the bag cover opening and closing device is used for automatically opening or closing a bag cover; the butt joint bearing part is used for bearing an external container; the storage battery mounting assembly is used for locking a storage battery module on the mobile vehicle body in a releasable manner; the dust removal system is arranged close to the butt joint bearing part and is used for collecting smoke dust generated by the molten metal ladle; the navigation obstacle avoidance system is used for path navigation and obstacle detection of the automated guided vehicle; and the control system controls the mobile vehicle body to stop when the navigation obstacle avoidance system detects an obstacle. The automatic guided vehicle is flexible in operation, high in automation degree, safe and reliable.

The invention discloses a submerged nozzle lining material for rare earth steel continuous casting and a preparation method thereof, and relates to the field of refractory materials. The high-strength wear-resistant ceramic material comprises the following components in percentage by weight: 40-65 wt% of fused white corundum, 8-20 wt% of quartz, 15-25 wt% of crystalline flake graphite, 1-2 wt% of metal silicon powder, 2-4 wt% of ferro-silicon nitride powder, 0.5-1 wt% of boron carbide powder and 8-12 wt% of thermosetting phenolic resin. The method has the beneficial effects that the raw materials are processed through the processes of mixing, drying and the like to prepare the pug, the pug is used for manufacturing the submersed nozzle lining, the submersed nozzle using the lining is used for rare earth steel pouring, the nodulation problem of an inner hole of the nozzle is remarkably relieved, the content of inclusions in molten steel is reduced, the quality of steel billets is improved, and meanwhile the production cost is reduced. And the service life of the submersed nozzle is prolonged, so that the submersed nozzle is more suitable for production of rare earth steel protective pouring.

A heat exchange type burner for baking a torpedo ladle, comprising a Y-shaped burner (1), a gas pipe (2), a blast pipe (3), a connecting cover, (4) and a flue gas pipe (5), wherein the Y-shaped burner is respectively connected to the gas pipe and the blast pipe, the gas pipe is sleeved in the blast pipe, the blast pipe is connected to the connecting cover, one end of the blast pipe is sleeved in the flue gas pipe, and the flue gas pipe is connected to one end of the connecting cover. The heat exchange type burner further comprises an air distribution pipe (6) and a heat exchange fin (7), wherein the air distribution pipe is sleeved on the flue gas pipe, the air distribution pipe is communicated with the blast pipe, the heat exchange fin is fixed on the flue gas pipe, and the heat exchange fin is arranged between the air distribution pipe and the flue gas pipe. The burner can efficiently utilize flue gas heat to assist gas combustion, achieves high heat exchange efficiency and space utilization rate, has a good combustion effect, is easy to mount and dismount, and is convenient to use.

A tilting device and a melt processing method are provided that can stably discharge a melt from a container in an accurate amount. [Solution] The present invention provides a tilting device that includes a main body, a mounting section disposed on top of the main body so that a container can be placed thereon, and a tilting section that is disposed on the main body so that the mounting section can be tilted, is connected to the mounting section, and has a reducer, and that can discharge molten material from the container, and includes the steps of placing the container containing the molten material on the tilting device, preparing a transport cart below the container that contains a molten material different from the molten material, tilting the container with the tilting device, slowing down the tilting speed of the container, and discharging the molten material from the container and loading it into the transport cart. the step of tilting the container includes a step of rotating a driver of the tilting device, a step of rotating a tilting shaft member of the tilting device with the driver, and a step of tilting the container using the tilting shaft member; and the step of decelerating the tilting speed of the container includes a step of primarily decelerating the rotational speed of a rotational force generated in the driver, a step of secondarily decelerating the rotational speed of the rotational force, and a step of transmitting the rotational force, the rotational speed of which has been secondarily decelerated, to the tilting shaft member.

The invention provides an intelligent molten iron transportation system and an intelligent molten iron transportation operation method, and the system comprises an iron ladle whole-process management and control subsystem which is used for generating an iron ladle scheduling instruction according to an existing iron ladle resource state under the condition that a blast furnace tapping plan, a steelmaking plan or a steel rolling plan is received, generating a hot metal car dispatching instruction according to the current hot metal car use state and the line resource state; the intelligent molten iron vehicle monitoring subsystem is connected with the molten iron ladle whole-process management and control subsystem and is used for generating a transportation path instruction containing a transportation path according to the received dispatching instruction and transmitting the transportation path instruction to the intelligent molten iron automatic driving system; and the intelligent molten iron automatic driving system is connected with the intelligent molten iron vehicle monitoring subsystem and is used for controlling the molten iron vehicle to arrive at a specified tap hole to start receiving iron according to the transportation path instruction and controlling the molten iron vehicle to transport the heavy package to a steelmaking or steel rolling heavy package parking place after the iron receiving is finished. The defect that in-plant railway transportation informatization and intelligentization are insufficient in the prior art is effectively overcome.

The invention discloses a totally-closed argon protection device, which relates to the technical field of die casting pouring, and comprises a steel ladle nozzle, a funnel brick, a central casting pipe, an upper argon ring, a lower argon ring and a cover body arranged between the upper argon ring and the lower argon ring, an upper argon gas outlet and an upper argon gas inlet are formed in the upper argon gas ring, the upper argon gas outlet is formed in the inner side of the upper argon gas ring, and an opening of the upper argon gas outlet faces the inclined upper portion; and the lower argon ring is provided with a lower argon outlet and a lower argon inlet. The upper argon outlet blows upwards obliquely, upper argon flow drives air around the upper argon ring to flow outwards at the moment, so that air in the cover body is exhausted, meanwhile, when the lower argon outlet blows towards the middle injection pipe, argon is in contact with the middle injection pipe and then escapes, and part of argon escapes towards the inside of the cover body. Meanwhile, along with continuous outward flow of air around the upper argon gas ring, the whole cover body is continuously filled with escaping argon gas blown out by the lower argon gas ring, so that the oxygen content in the cover body is reduced.