79results about "Calcium carbide" patented technology

The present invention relates to the technology of utilizing sensible heat of calcium carbide, and particularly relates to a calcium carbide sensible heat utilization system based on the recycling of heat extraction medium. A calcium carbide sensible heat utilization system based on the recycling of heat extraction medium includes a calcium carbide tundish. The calcium carbide tundish is connected to a rotary drum through a calcium carbide flow trough. The rotary drum has openings at both ends, and an intake buffer chamber and an exhaust buffer chamber are respectively arranged at the discharge end and the feed end of the rotary drum. A rotary gear ring is arranged on the outer wall of the rotary drum, and the rotary gear ring cooperates with a rotary motor. Driven by the rotary motor, the rotary drum rotates continuously. A scraping device is arranged inside the rotary drum. This kind of calcium carbide sensible heat utilization system changes the traditional process of using a calcium carbide pot for cooling, directly uses a high-speed heat extraction gas flow to impact the calcium carbide liquid into scattered point-like falling materials for cooling, which is convenient for the high-speed heat extraction gas flow to absorb heat and utilize the sensible heat, and the heat extraction gas medium can be recycled, saving energy and protecting the environment.

The present invention discloses a method for decomposing the response area of a number sequence of a spray gun elbow pipe in a process of matching lime powder pelletizing with airtight conveying of pulverized coal. There are a variable-diameter fastening groove on the operating platform, a sliding clamp group, and a low-speed ring chain electric hoist. According to the need of variable-diameter bending, several areas are set in the arc part. The arc part of the operating platform is decomposed into areas Ⅰ, Ⅱ, Ⅲ, Ⅳ... The number of data points contained in each sub-area is 100. The closer the number of radii of the arc is, the more precise the bending of the elbow pipe workpiece is, and the closer it is to the size required by the entity. According to the accuracy and the need of variable-diameter bending of the elbow pipe workpiece, a sample radius library of RⅠ, RRⅠ... is set. The above sampling radius library is imported into the general term formula of the arithmetic sequence in step 1: RⅠ = R1 + (n - 1)dⅠ, and so on. The arc sub-area RⅡn at different positions can be calculated. According to this, the sizes of the variable-diameter fastening groove on the operating platform and the sliding clamp group are set and rounded to two decimal places, ensuring the accuracy. At the same time, a queryable database is established, and multiple memory productions can be carried out.

The present invention relates to a method for producing magnesium by carbothermal reduction with co-production of calcium carbide, which is particularly suitable for carbothermal reduction of magnesium using a mixture of magnesium oxide and calcium oxide as raw materials and carbon as a reducing agent. Prepare a mixed powder containing magnesium oxide, calcium oxide and a carbon reducing agent; form the mixed powder into pellet furnace charge and put it into a reactor provided with a heat source; set the absolute pressure P in the reactor within the range of 1000 Pa ≤ P ≤ atmospheric pressure or slightly positive pressure, and the reaction temperature T within the range of 11lg²P + 71lgP + 1210 °C < T < 98lg²P - 129lgP + 1300 °C, and carry out the smelting reaction. Liquid magnesium is obtained by condensation through a condenser connected to the reactor. After the smelting reaction is completed, calcium carbide is obtained in the reactor. By this method, the safety hazard of explosion caused by the easy formation of magnesium powder when the magnesium vapor and CO gas in carbothermal reduction of magnesium are cooled together can be completely avoided, and the cost of magnesium smelting can be significantly reduced. This method has good application prospects in industry.

The invention relates to a pellet and a preparation method thereof, and relates to the technical field of calcium carbide preparation, the pellet comprises the following components in parts by mass: 5.2-8.3 parts of calcium carbonate crystal, 56.8-59.7 parts of calcium oxide, 32.0-37.5 parts of calcium hydroxide, and 0.6-0.9 part of carboxylation modified lignin; the preparation process comprises the steps of raw material pretreatment, mineralization slurry preparation, mineralization and curing. According to the pellet and the preparation method, the active lime screen underflow serves as a calcium source, a stable structure with high strength and multistage pores is constructed on the molecular scale by adopting the biomimetic mineralization principle, and the pellet cracking risk is effectively reduced; meanwhile, an inert binder does not need to be added, effective calcium content dilution is avoided, the high-temperature smelting working condition of the distribution stone is adapted, and the production cost is remarkably reduced.

[Problem] To provide a metal carbide and a method for producing a metal carbide with which a bioplastic raw material can be relatively inexpensively and stably supplied. [Solution] One aspect of the present invention provides a metal carbide having a biomass degree of 0.01% to 100% as measured by the 14C isotope measurement method defined in ASTM D6866.

The utility model provides a waste calcium carbide remelting and upgrading conveying device, which belongs to the technical field of conveying devices, and comprises a crushing chamber, a rotator arranged in the crushing chamber, two first rotating shafts rotationally connected in the rotator, two crushers fixedly connected to the lower ends of the two first rotating shafts, and two second rotating shafts rotationally connected in the two crushers. The two first gears are fixedly connected to the circumferential surfaces of the two first rotating shafts, the gear ring is fixedly connected to the interior of the crushing chamber, and the first gears are meshed with the gear ring. Meanwhile, powder calcium carbide directly reaches the furnace bottom through the inside of the electrode and does not make contact with a furnace charge layer, current shunting is eradicated, waste products are directly added to the furnace bottom after being powdered and can be rapidly reacted and fused with semi-finished product calcium carbide, and electric energy consumption is greatly reduced.

The invention discloses a plasma hot blast stove consolidation reduction material system using CO as a medium. The plasma hot blast stove consolidation reduction material system comprises a plasma heating device, a consolidation reduction material device, a preheating air supply device and a cooling device. The material consolidation and reduction device comprises a preheating section, a consolidation and reduction section and a cooling section and is used for sequentially preheating, consolidating and reducing and cooling the materials, so that the materials in the form of powder pellets form target materials; the preheating gas supply device is used for conveying preheating gas generated by flue gas waste heat and material sensible heat in the consolidation reduction section according to a preset first temperature range into the preheating section and preheating the materials; the plasma heating device adopts CO as a medium to generate high-temperature CO plasma gas, and the materials in the consolidation reduction section are consolidated and reduced through the high-temperature CO plasma gas according to a preset second temperature range; and the cooling device adopts CO as a medium to generate low-temperature gas in a preset third temperature range, and conveys the low-temperature gas to the cooling section, so that a target material can be formed when the material is cooled to be less than or equal to 100 DEG C.

To provide acetylene utilizable as a raw material for various bioplastics while reducing loads on the environment, to provide a method for producing the acetylene, and to provide an acetylene derivative.SOLUTION: According to an aspect of the present invention, there is provided acetylene, wherein the acetylene contains carbon atoms derived from biomass.SELECTED DRAWING: None

The utility model discloses a kind of dry-process acetylene crude crushing system of calcium carbide, tippler is docked with stacker, mechanical breaking hammer is equipped on the stacker top, stacker outlet is docked with conveying scale plate machine, the export end of conveying scale plate machine is docked with the import of jaw crusher, the outlet of jaw crusher is docked with large angle of inclination lifting belt, the export end of large angle of inclination lifting belt is docked with the inlet of cone crusher, the outlet of cone crusher is docked with flat belt conveyor, the export end of flat belt conveyor is docked with coarse material bin import.The utility model is through reasonable design and equipment configuration, realizes the efficient crushing and conveying of calcium carbide.It is high in degree of automation, high in crushing efficiency, good in environmental protection performance, high in equipment stability and strong in flexibility etc., so that it has remarkable advantage in dry-process acetylene production process, can effectively improve production efficiency, reduce production cost and reduce environmental pollution.

The application discloses a method for preparing metal magnesium and calcium carbide by using waste photovoltaic panels and carbide slag, and relates to the technical field of solid waste treatment.The method comprises the following steps: obtaining silicon powder by treating the waste photovoltaic panels, and using the silicon powder as a reducing agent to prepare metal magnesium; grinding the treated carbide slag to obtain carbide slag powder as a calcium source; using a magnesium-containing material as a magnesium source, and using semi-coke as a carbon source to prepare calcium carbide; mixing and forming the above-mentioned materials according to a certain proportion, and then performing three-stage continuous high-temperature reaction to sequentially complete the three processes of carbide slag decomposition, metal magnesium preparation by a silicon thermal method and calcium carbide preparation by a carbon thermal method; and finally collecting the metal magnesium, the calcium carbide and calcium silicate by-products.The method realizes the collaborative resource utilization of two kinds of solid waste, produces high-value-added metal magnesium and calcium carbide, has no wastewater discharge in the whole process, and reasonably disposes waste gas and waste residue, and has the advantages of green low carbon, low energy consumption and continuous production.

The invention discloses a carbon material powder balling device and process for calcium carbide production, and belongs to the technical field of calcium carbide production, the carbon material powder balling device comprises a screening dust collection assembly, one end of the screening dust collection assembly is fixedly connected with a feeding belt, dust collection air pipes are arranged on the two sides of the bottom end of the screening dust collection assembly, one end of one dust collection air pipe is connected with a second-stage calcium carbide furnace, and the other end of the other dust collection air pipe is connected with a second-stage calcium carbide furnace. According to the invention, carbon undersize materials and carbon fly ash are reasonably utilized and are extruded into blocks which are beneficial to production of the calcium carbide furnace and are moderate in particle size, hardness and strength, and through blending of coke and semi-coke, the carbon undersize materials and the carbon fly ash are uniformly mixed, so that the carbon undersize materials and the carbon fly ash are uniformly mixed, and the carbon undersize materials and the carbon fly ash are uniformly mixed to form the calcium carbide furnace. The solid waste is effectively utilized, the emission of the solid waste is reduced, the comprehensive utilization of the carbon material powder is realized, the utilization rate of the carbon material is greatly improved, the production cost of the calcium carbide is reduced, and the environmental protection pressure in the production process of the calcium carbide is reduced.

The utility model relates to the technical field of calcium carbonate and calcium carbide production equipment, and discloses plush porous calcium carbonate and calcium carbide production equipment which comprises a bottom plate, a carbonization tank is fixedly mounted on the left side of the upper end of the bottom plate, and a first tank cover is arranged on the carbonization tank. A first tank cover is arranged in the carbonization tank, first cover handles are fixedly installed on the end faces of the two sides of the first tank cover, and a first feeding port is formed in the first tank cover. A worker starts a first driving motor mounted on a first tank cover through a controller, so that the first driving motor drives a first connecting rod mounted at the output end of the first driving motor to rotate, and the first connecting rod drives stirring blades mounted on the first connecting rod to rotate; and thus, the stirring blades drive carbon dioxide in the carbonization tank to be fully mixed with calcium carbonate slurry, and the calcium carbonate slurry is better carbonized.

A method for producing a metal carbide, comprising: electrode preparation comprising: preparing a first molten salt containing at least one first metal ion selected from the group consisting of alkali metal ions and alkali earth metal ions, and a carbonate ion, and applying a voltage to the first molten salt to precipitate a precipitate containing carbon on a first electrode, thereby obtaining a second electrode; and electrolysis comprising applying a voltage to a second molten salt containing at least one second metal ion selected from the group consisting of alkali metal ions and alkali earth metal ions using the second electrode to obtain a carbide composition containing a carbide of the second metal.

The present invention belongs to the technical field of metal smelting, and in particular relates to a calcium vapor balance control method and device for catalytic carbon reduction magnesium smelting. The calcium vapor pressure in a reaction system is controlled by condensing and evaporating metallic calcium, thereby suppressing the side reactions 2CaO(s)+CaC2(s)=3Ca(g)+2CO(g), CaC2(s)=Ca(g)+2C(s), and Ca(g)+2C(s)=CaC2(s), thereby increasing the yield of magnesium products and calcium carbide products, and extending the service life of carbonaceous materials such as graphite electrodes in the reaction chamber, greatly improving the economic benefits of the method and facilitating the industrialization and promotion of the method.

This method for producing a metal carbide using carbonate ions as a carbon source comprises: preparing a molten salt containing first metal ions and the carbonate ions; disposing a working electrode and a counter electrode on the molten salt, and supplying a current between the working electrode and the counter electrode at a predetermined current density to produce a carbide of the first metal; and recovering the concentration of the carbonate ions near the working electrode, wherein the production of the carbide of the first metal and the recovery of the concentration of the carbonate ions are alternately repeated at least one time.

A collaborative calcium carbide furnace-exit transfer system and method using an RGV trolley and a mobile platform, relating to the technical field of calcium carbide production equipment, includes a furnace body. An open-loop transfer track is arranged around the furnace bore. A cooling zone is located on the side furthest from the furnace body. Parallel storage tracks are laid near the transfer track within the cooling zone. At least one storage track is equipped with an RGV tractor. An open section is formed between the storage track and the transfer track, with a horizontal track at the open section. A mobile platform is mounted on the horizontal track, and a mobile track is mounted on the mobile platform. One end of the RGV tractor can be hooked onto a receiving trolley on the storage track and pull it along the storage track and the mobile track. Hook mechanisms are provided at both ends of the open section of the transfer track, automatically clamping the neck of the wire rope on the winch and engaging or disengaging it with the head and tail ends of the receiving trolley. This invention improves the automation level and scheduling capability of the trolley during furnace-exit transfer.

The application provides a screen protection insulation kit, which has a vertical surface structure and a horizontal surface structure which are integrally molded by using multiple layers of materials. The vertical surface structure is an arc-shaped thin wall formed by circumferentially dividing a cylinder, and the horizontal surface structure is a fan ring-shaped thin wall which extends radially and outwardly from the lower end of the vertical surface structure. The vertical surface structure comprises, in sequence, a first mica paper, a second mica paper, a first glass cloth, a first mica plate, a second glass cloth, a third mica paper, and a fourth mica paper, which are attached to each other by high-temperature glue. The horizontal surface structure comprises the first mica paper, the second mica paper, the first glass cloth, the second glass cloth, the third mica paper, and the fourth mica paper of the vertical surface structure, and further comprises a second mica plate and a third mica plate which are stacked between the first glass cloth and the second glass cloth. The application also provides a manufacturing process of the screen protection insulation kit, in which a steel mold is used to mold multiple layers of materials into the screen protection insulation kit.

The present invention relates to a method for producing magnesium by carbothermal reduction with co-production of calcium carbide, which is particularly suitable for carbothermal reduction of magnesium using a mixture of magnesium oxide and calcium oxide as raw materials and carbon as a reducing agent. Prepare a mixed powder containing magnesium oxide, calcium oxide and a carbon reducing agent; form the mixed powder into pellet furnace charge and put it into a reactor provided with a heat source; set the absolute pressure P in the reactor within the range of 1000 Pa ≤ P ≤ atmospheric pressure or slightly positive pressure, and the reaction temperature T within the range of 11lg²P + 71lgP + 1210 °C < T < 98lg²P - 129lgP + 1300 °C, carry out the smelting reaction, obtain liquid magnesium by condensation through a condenser connected to the reactor, and obtain calcium carbide in the reactor after the smelting reaction ends. By this method, the safety hazard of explosion caused by the easy formation of magnesium powder when the magnesium vapor and CO gas in carbothermal reduction of magnesium are cooled together can be completely avoided, and the cost of magnesium smelting can be significantly reduced. This method has good application prospects in industry.

To provide a carbon fixing device and a carbon fixing system capable of reducing waste by recycling carbon and obtaining calcium carbide with less energy.SOLUTION: The device comprises a second reaction chamber 32 for reacting calcium oxide with carbon by utilizing the reaction heat of a first reaction chamber 30 for reacting carbon dioxide with magnesium.SELECTED DRAWING: Figure 2

The utility model provides a calcium carbide pot with a positioning and guiding pot inserting plate, which comprises a calcium carbide pot, the caliber of the calcium carbide pot is sequentially increased from bottom to top, and the side wall of the top of the calcium carbide pot is provided with a material taking groove for pulling out a calcium carbide lump from the calcium carbide pot; the positioning assembly comprises a limiting block and two limiting plates which are arranged on the outer side wall of the calcium carbide pot; the limiting block is located under the material taking groove, and the two limiting plates are arranged on the two opposite sides of the material taking groove. The pot inserting plate is inserted into the material taking groove, two clamping plates in one-to-one correspondence with the two limiting plates and two vertical plates located below the two clamping plates are arranged on the outer side wall of the pot inserting plate, the two vertical plates are in axial symmetry relative to the limiting block and are connected with the limiting block through pin shafts, and the pin shafts can rotate in the limiting block and move up and down. According to the pot inserting plate taking device, the convenience of inserting the pot inserting plate into the material taking groove or taking the pot inserting plate out of the material taking groove is improved, and therefore the inserting and taking efficiency of the pot inserting plate is improved.

The utility model provides an opening and closing device based on a calcium carbide pot inserting plate, and relates to the technical field of calcium carbide pots, the opening and closing device comprises a translation rotating assembly and a calcium carbide pot body, the top of the translation rotating assembly is provided with a force arm assembly, the force arm assembly is provided with an operation assembly, and the translation rotating assembly comprises a base; a lead screw is rotationally installed in the base, and guide rods which are symmetrically distributed are fixedly installed in the base. The horizontal precise translation is realized through the screw rod and the guide rod, and the basic shaft is driven by the gear pair to complete the rotary positioning. A rotary supporting structure formed by the auxiliary blocks and the annular sliding grooves effectively disperses operation loads from single-point stress of the basic shaft to multi-point and multi-direction bearing, the rigidity, the anti-overturning capacity and the movement stability of the whole structure are greatly improved, and therefore the positioning repetition precision and the mechanical durability of the device during long-term operation are remarkably improved.

The utility model discloses a system for co-producing calcium carbide and coal tar by using raw coal and limestone and a system for co-producing calcium carbide, LNG (Liquefied Natural Gas) and coal tar, which comprises an external heating type rotary kiln unit for producing calcium carbide raw material semi-coke and byproduct coal gas, the external heating type rotary kiln unit is respectively connected with a coal gas purification unit and a semi-coke screening unit, the lime kiln is connected with a lime screening machine, equipment in the semi-coke screening unit and the lime screening machine are respectively connected with a calcium carbide furnace, and the calcium carbide furnace and the coal gas purification unit are respectively connected with a gas holder. The pyrolysis gas, the coal tar and the semi-coke are prepared through pyrolysis of the pulverized coal, the pulverized coal resource is fully utilized, the coal gas with the low calorific value is used as a heat source of the pyrolysis furnace and the lime kiln through coal gasification, the pyrolysis gas with the high calorific value and the calcium carbide furnace gas are synthesized into the LNG with the high value, the calcium carbide production cost is reduced, and a solving thought is provided for optimization and upgrading of calcium carbide production.

The utility model provides a calcium carbide furnace discharging pot trolley. The calcium carbide furnace discharging pot trolley comprises a trolley body and a traction hook, the vehicle body comprises an upper side surface and a lower side surface; a calcium carbide pot is placed on the upper side surface; and the traction hook is arranged at the central position of the lower side surface. In the using process, the upper side face of the trolley body is used for containing a calcium carbide pot so as to contain discharged calcium carbide; the traction hook is arranged in the center of the lower side face and connected with the traction rope so as to pull the vehicle body, in the traction process, due to the fact that the traction hook is arranged in the center of the lower side face of the vehicle body, the problem that the head of the vehicle body warps under the action of the traction rope and the traction hook is solved, and the problem that in the prior art, the vehicle body is damaged is solved. The calcium carbide pot inclines and shakes in the calcium carbide transferring process, and the life and property safety of field personnel is threatened.

This invention discloses a gray-carbon pelletized calcium carbide and its preparation method, relating to the field of calcium carbide material technology and belonging to patent classification number C01B32 / 942. The preparation method involves: acid activation, cetyltrimethylammonium bromide modification, and high-energy ball milling of bentonite to prepare a nano-sized bentonite binder; graft copolymerization of starch and acrylic acid, followed by epichlorohydrin crosslinking and hydrophobication with a silane coupling agent to prepare a hydrophobic grafted starch binder; composite of polyethylene glycol-modified cellulose nanofibers with the above two binders, followed by high-speed shear emulsification to obtain a composite binder; mixing gray carbon and quicklime powder, adding the composite binder, and molding to obtain raw blocks; and pyrolyzing the raw blocks under an inert atmosphere to obtain gray-carbon pelletized calcium carbide. The calcium carbide raw blocks and calcium carbide pellets prepared by this invention exhibit excellent mechanical strength.

To provide: a method for producing a metal carbide using carbon dioxide as a carbon source and a metal oxide as a metal source; a method for producing a hydrocarbon from the metal carbide obtained using carbon dioxide as a carbon source and a metal oxide as a metal source; and a metal carbide composition.SOLUTION: A method for producing a metal carbide includes: preparing a molten salt containing an oxide of a first metal; adding carbon dioxide to the molten salt; applying a voltage to the molten salt containing the carbon dioxide; and obtaining a precipitate containing a carbide of the first metal. A method for producing a hydrocarbon includes hydrolyzing the carbide of the first metal to obtain a hydrocarbon-containing gas and a hydroxide of the first metal.SELECTED DRAWING: Figure 1

The novel calcium carbide pot comprises a pot body, a double-opening insertion plate, a guide rod, a guide wheel, a holding clamp and other components, and the pot body is a big-end-up trapezoidal table body and is provided with a guide groove and a holding clamp guide groove; the double-opening plugboard is arranged in the pot body and is provided with a guide wheel fixing and connecting hole and a wire boss; the guide rods penetrate through the insertion plate counter bores to enter the guide sinking grooves and then are assembled with the guide wheels; the clamp is lifted by a crown block, the clamp head of the clamp slides to the bottom of the split inserting plate along the clamp guide groove to buckle the inserting plate, when the clamp is lifted, the split inserting plate ascends along the guide groove and is completely opened after reaching a certain height, and the clamp head of the clamp enters a pot to clamp and lift out a calcium carbide lump. The device is ingenious in structural design, convenient to operate and capable of effectively improving the production efficiency, reducing the labor intensity of workers and eliminating potential safety hazards.

The invention discloses an integrated system and method for cascade recycling of calcium carbide waste heat, and belongs to the technical field of calcium carbide production waste heat utilization. The integrated system comprises a waste heat recycling unit, a waste heat storage unit and a cyclic utilization unit which are communicated in sequence; small and solid calcium carbide blocks can be directly obtained through production of the integrated system, the technological process can be greatly shortened, the production efficiency can be improved, the occupied area can be reduced, meanwhile, stepped recycling of calcium carbide waste heat can be achieved, and the production cost is reduced. The water to be electrolyzed is subjected to gradient heating through oxygen cooling, nitrogen and calcium carbide contact heat transfer and calcium carbide radiant heat absorbed by carbon dioxide, a cooling gas path and the calcium carbide are subjected to contact heat exchange, loss caused by contact of water vapor and the calcium carbide in the technological process is greatly reduced, and the quality and productivity of the calcium carbide are effectively guaranteed.

The purpose of the present invention is to provide a porous carbon that is suitable for a positive electrode additive and can improve the input / output characteristics of a non-aqueous electrolyte secondary battery at room temperature and ensure the peel strength of an electrode.　The present invention relates to a porous carbon that has a 2–200 nm pore volume of at least 0.8 cm3 / g as measured by BJH analysis, a bulk density of no more than 0.10 g / cm3, a mode pore size of no more than 150 nm as measured by BJH analysis, and an average primary particle size of 1–100 μm.

The utility model belongs to the technical field of industrial waste residue recycling, and particularly discloses a system for producing lime from carbide slag. The system is composed of a carbide slag warehouse, metering equipment, conveying equipment A, conveying equipment B, conveying equipment C, conveying equipment D, a homogenization metering system, a cyclone preheating system, a cyclone calcination decomposition system, a suspension cooling system, a lime warehouse, a homogenization metering system, granulation equipment, a calcium carbide production line and the like. The device disclosed by the utility model has the beneficial effects that the process flow is simple, the layout is compact, the suspension preheating decomposition calcining technology of cyclone preheating, pipeline type decomposition furnace and suspension cooling is adopted, continuous production can be realized, the production efficiency is high, the decomposition rate of carbide slag is greater than 98%, and the yield is high; according to the utility model, the calcium carbide slag suspension calcination technology is adopted, the unit product energy consumption of lime can be reduced, so that the unit energy consumption of calcium carbide finished products is reduced, the calcium carbide by-product furnace gas is adopted as the calcination fuel, the reasonable and full utilization of coal resources can be realized, and no extra coal resource consumption is caused.

The embodiment of the invention provides a calcium carbide smelting transfer system. The calcium carbide smelting transfer system comprises a transfer mechanism, an opening and closing mechanism and a hoisting mechanism, the transfer mechanism comprises a transfer track and transfer trolleys, and the multiple transfer trolleys are connected in sequence, matched with the transfer track and used for driving the calcium carbide pots to transfer between the cooling area and the smelting area; the opening and closing mechanism is used for opening pot lugs of the calcium carbide pot to expose a finished product material in the calcium carbide pot; the opening and closing mechanism is further used for closing pot lugs of the calcium carbide pot so as to contain materials to be cooled. The hoisting mechanism is arranged at the top of the opening and closing mechanism and used for hoisting finished products in the calcium carbide pot to the transfer area when the pot lugs of the calcium carbide pot are in the opening state. According to the embodiment of the invention, automatic operation of calcium carbide smelting is realized, so that the labor cost is greatly saved, and the working efficiency is improved; and moreover, no operator is required to participate, so that the potential safety hazard of the operator in the operation process is prevented, and the accident rate is greatly reduced.