93results about "Charge composition/state" patented technology

The invention provides an aluminum melting furnace door flue gas automatic control dust removal air volume system, and relates to the field of aluminum melting furnace flue gas purification treatment, and the system comprises a data acquisition and processing unit which is used for acquiring flue gas state data and furnace door state images at an aluminum melting furnace door, and identifying the current flue gas state grade and furnace door opening and closing degree of the aluminum melting furnace; determining a target concentration control threshold value; the air volume distribution unit is used for generating the total air volume adjustment amount by using an increment inversion and gain scheduling algorithm based on the flue gas state grade and the target concentration control threshold value, and performing air volume distribution processing on the multiple execution mechanisms by using a redistribution scaling pseudo-inverse method; and the air volume control unit is used for generating control instructions of the multiple execution mechanisms based on the air volume distribution result, sequentially transmitting the control instructions to all the execution mechanisms and executing air volume control. According to the invention, through combination of deep learning network identification and dynamic adjustment, real-time matching of the dedusting air volume and the flue gas volume is realized, and the operation cost of an enterprise is remarkably reduced.

The invention discloses an aluminum bar heating furnace for aluminum alloy machining, and particularly relates to the technical field of aluminum alloy machining. A clamping rotating assembly and a bearing transfer unit are arranged, the bearing transfer unit is located between a first clamping base and a second clamping base, a driving roller provides supporting and guiding for the bottom of an aluminum bar, and the aluminum bar enters a hole groove in the first clamping base; a plurality of pressing wheels I are used for fixing one ends of the aluminum bars, and a plurality of pressing wheels II in the clamping seat II are used for fixing the other ends of the aluminum bars; after the roller seat descends once, the aluminum bar rotates, so that the heating is more uniform, and the aluminum bar is always positioned in the rotating center; then, fixing of the two ends of the aluminum bar is relieved, the aluminum bar moves downwards to make contact with a driving roller which descends at the first time, meanwhile, a first clamping base and a second clamping base are driven by a corresponding second transmission screw to slide in a limited mode along a movement groove, and the first clamping base and the second clamping base are far away from each other and completely separated from the two ends of the aluminum bar; and the roller seat descends for the second time, the center of the aluminum bar is consistent with the center of the outlet, and discharging of the aluminum bar is facilitated.

The invention relates to the technical field of alloy smelting, in particular to a non-vacuum smelting preparation method of Mn-based alloy, which comprises the following steps: smelting a metal material and a covering agent to form a continuous slag layer, and obtaining a plurality of partial pressure ratios of furnace mouth escape gas and a vibration spectrum of a furnace body according to an initial detection period; determining whether the partial pressure ratio and the vibration spectrum meet oxidation judgment conditions and vibration judgment conditions or not; determining a melt state and a slag layer protection state on the basis of an oxidation judgment condition and a vibration judgment condition, adjusting input power and slag layer parameters on the basis of the slag layer protection state in combination with the partial pressure ratio, and adjusting the content of a deoxidizing agent in a pre-deoxidation procedure; and the risk that the final manganese yield is not within the target range is determined based on the risk grade judgment result, the final deoxidation degree and the standing duration are adjusted, the initial detection period is shortened, and the manganese-based alloy is prepared through pouring. The smelting parameters are adjusted by identifying the states of the melt and the slag layer and combining the manganese feedback efficiency, and the manganese yield of the manganese-based alloy smelted under the non-vacuum condition is increased.

The application discloses a low-temperature firing method of mixed porcelain blanks, which comprises three stages. By controlling the kiln pressure, combustion-supporting wind, temperature-adjusting wind, natural gas flow and opening degree of each zone in each stage, the heating speed of each stage is controlled, the porcelain blanks prepared by dry and wet methods are fired together, the problem that the two kinds of porcelain blanks need to be fired respectively in the prior art is solved, the problem of main body cracking and burst of the porcelain blanks due to different water contents of the two kinds of porcelain blanks in the firing process is solved, and the firing efficiency is greatly improved under the premise of ensuring the quality of the porcelain blanks.

The application relates to the technical field of refractory metal material processing, in particular to a vacuum smelting system and method for high-purity molybdenum and a fiber-structure molybdenum material, the vacuum smelting system for high-purity molybdenum comprises a three-layer composite crucible, the vacuum smelting method for high-purity molybdenum comprises the following steps: step S1): under the condition of a vacuum degree of less than or equal to 5*10 ‑3 Pa, a three-layer composite crucible is used to perform consumable smelting on molybdenum raw materials; step S2): a directional solidification rate is controlled to be 8-12 mm / min, and a longitudinal temperature gradient is formed to be greater than or equal to 100 DEG C / cm; step S3): multi-stage plastic deformation is implemented on a solidified ingot, and a total deformation amount is greater than or equal to 90%; the fiber-structure molybdenum material is formed with a longitudinal continuous fiber structure in the material, a grain length-diameter ratio is greater than or equal to 10:1, a fiber diameter is less than or equal to 5 microns, hydrogen content is less than or equal to 5 ppm, oxygen content is less than or equal to 50 ppm, and a room-temperature tensile strength is greater than or equal to 780 MPa; the application can prepare high-purity fiber-structure molybdenum material, and improves the problem of insufficient axial performance caused by the isotropy of a traditional equiaxed crystal structure.

The invention discloses a ceramic glue discharging and sintering integrated furnace for 3D printing forming and an operation method. The integrated furnace comprises a furnace body, a supporting structure, a lifting driving mechanism, a sealing assembly and an atmosphere supply pipeline. The sealing assembly is composed of a movable sealing unit and a sealing pipe, and a closed space can be formed in the furnace body through lifting. The operation method comprises the steps of charging, closed space forming, atmosphere replacement, rubber discharging, carbon discharging, sintering and cooling, and whole-process integrated continuous treatment is achieved. By means of the dynamic sealing technology, biscuit transfer damage is avoided, the yield and production efficiency are remarkably improved, equipment investment and energy consumption are reduced, and the core problem existing in traditional step-by-step treatment is solved.

A heating device and method for substrate glass production are provided. The device includes a furnace tray and multiple heating members. On the furnace tray's side facing the glass substrate, multiple grooves are arrayed along its height; each groove body penetrates the furnace tray along its length direction, with one heating member inside and extending along the groove body's length direction. Each heating member includes a fixing rod disposed in the groove body and fixedly mounted to the furnace tray and a heating wire wound around an outer circumferential surface of the fixing rod along a length direction of the fixing rod. In a thickness direction of the furnace tray, an outer diameter of the heating wire is greater than a height of the groove body. An inner side surface of the groove body has a reflective layer with a preset distance from the heating member.

This invention belongs to the technical field of side-blown lead smelting furnaces, specifically disclosing a side-blown lead smelting furnace that is easy to inspect and maintain. It includes a settling chamber, a lead outlet channel connected to one side of the settling chamber, a connecting water jacket connected to the upper part of the outer wall of the settling chamber, a side-blowing mechanism connected to the upper end of the settling chamber and corresponding to the water jacket on the outer wall of the smelting chamber, a charging chamber connected to the upper end of the smelting chamber via a connecting mechanism, a flue pipe connected to the middle of the upper end of the charging chamber, the flue pipe being inclined, a feed inlet on the lower part of one side of the charging chamber, and a feeding mechanism connected to the upper end of the smelting chamber corresponding to the feed inlet. This invention achieves uniform material distribution and online self-cleaning through independently flippable guide plates and diffuser plates, and allows for quick replacement of components through detachable connections, significantly improving the convenience of inspection and maintenance and the equipment's operating rate.

The invention relates to the field of aluminum alloy smelting, and discloses an aluminum melting and soup preparing technology which comprises the steps that an opening and closing assembly is controlled to open a feeding port of a furnace body, then a feeding assembly is controlled to pour aluminum alloy into the furnace body, and then the opening and closing assembly is controlled to close the feeding port of the furnace body; the furnace body is controlled to preheat the aluminum alloy in the first smelting chamber, and the molten aluminum alloy flows into the second smelting chamber to be fully molten; after the aluminum alloy is completely molten, the transfer trolley is controlled to transfer the transfer ladle to the discharge port, and then the plugging assembly is controlled to open the discharge port, so that the molten aluminum flows into the transfer ladle; the transfer trolley is controlled to move to a heat preservation furnace, then the molten aluminum in the transfer ladle is poured into the heat preservation furnace, and the heat preservation furnace conducts heat preservation on the molten aluminum; the die-casting machine is used for taking the molten aluminum in the heat preservation furnace for machining; the feeding assembly performs automatic feeding, the smelting rhythm of the furnace body is accurately matched, and manual feeding delay is avoided; the holding furnace continuously stores molten aluminum at constant temperature, the die-casting machine can take materials according to needs, the repeated transfer frequency of a transfer ladle is reduced, and the production waiting time is shortened.

The invention relates to an efficient aluminum extraction and graded recovery device for aluminum ash, and relates to the technical field of aluminum ash treatment. Comprising a recovery box, an ash frying furnace is arranged in the recovery box, the upper end of the ash frying furnace is of a through barrel-shaped structure, an opening of the ash frying furnace is larger than a barrel body, the opening and the barrel body are in slope transition, and a stirring device for stirring aluminum ash to promote polymerization of aluminum drops is arranged in the ash frying furnace. A bearing plate is slidably arranged at the bottom of the ash frying furnace in the height direction. The upper end of the ash frying furnace is connected with a collecting box communicated with the interior. According to the invention, the following problems existing in the aluminum ash treatment process in the prior art can be solved: dispersed waste slag can be stably and continuously pushed to one part of the furnace wall for concentration through the specially designed arc-shaped push plate under the dynamic cooperation of the auxiliary part, and the waste slag can be stably and continuously pushed to the furnace wall for concentration by combining the bearing plate capable of accurately lifting and the movable and turnover automatic bucket; the whole-process mechanical operation of enriching, lifting, shoveling and dumping of the waste residues is achieved, and the cleaning efficiency and thoroughness are greatly improved.

The embodiment of the invention relates to the field of metal remelting, in particular to a method suitable for manufacturing radioactive materials into molten ingots in a glove box, the method is carried out through a preset device, the device comprises a melting assembly, a vacuumizing assembly, an ingot forming assembly and a conveying assembly, and the method comprises the following steps that S10, the radioactive materials are put into the melting assembly; s20, a vacuumizing assembly is started, and the melting assembly is vacuumized; s30, the melting assembly is heated, so that the radioactive materials in the melting assembly are converted into a molten state; s40, the radioactive materials in the molten state are poured into the ingot forming assembly; s50, the ingot forming assembly is cooled, so that the radioactive materials in the molten state are formed into ingots; and S60, the radioactive materials obtained in the step S50 are subjected to ingot forming and removed out of the glove box through a conveying assembly. Through casting in the glove box, radioactive substances can be prevented from being exposed in an operation environment, and the safety of operators is ensured.

The application discloses a graphite negative electrode material carbonization, graphitization and crucible roasting integrated device and method. The device comprises a furnace body, a carbonization mechanism and a pushing mechanism. The furnace body comprises an insulation layer, a heating layer and a first plugging block. The carbonization mechanism comprises a hopper and a discharge valve. The pushing mechanism is used for pushing the crucible in the containing cavity into the heating cavity. The graphite negative electrode material carbonization, graphitization and crucible roasting integrated device has the beneficial effects that the containing cavity is arranged in the insulation layer, the temperature of the containing cavity is lower than that of the heating cavity, the graphitization process can be carried out in the heating cavity, the graphite negative electrode material carbonization and the crucible roasting process can be carried out in the containing cavity, different objects with different target temperatures can be heated in different partial regions of the furnace body, the crucible in the containing cavity is pushed into the heating cavity by the pushing mechanism, the carbonized graphite negative electrode material and the heated crucible in the containing cavity do not need to be taken out and directly pushed into the heating cavity, heat waste can be reduced, and environmental protection benefits can be improved.

The present disclosure relates to a method of treating a material comprising a mineral, which comprises subjecting the material to radiant heating, for example a high flux and rapid radiant heating. In a particular form, the mineral is a hydrous mineral.

The application provides a system and a process for preparing oxygen-free copper from recycled copper. The system comprises a smelting device for melting the pretreated recycled copper to obtain copper liquid; an oxidizing device having a first output end in communication with the interior of the smelting device for delivering oxygen to the interior of the smelting device through the first output end; a reducing device having a plurality of second output ends in communication with the interior of the smelting device through the bottom wall of the smelting device for delivering carbon monoxide to the interior of the smelting device through the second output ends; and a slag removal device for removing primary impurities and secondary impurities on the surface of the copper liquid. The application achieves efficient removal of impurities.

This invention discloses a pottery firing process based on a downdraft wood-fired dragon kiln, including the steps of kiln construction, kiln loading, firing in the first kiln chamber, preheating of subsequent kiln chambers, firing in the second kiln chamber, preheating of subsequent kiln chambers, firing in the remaining kiln chambers, and opening the kiln. This invention employs a sequential firing method, concentrating firepower and heat on the pottery in one kiln chamber, increasing the rate of temperature rise within the kiln chamber during firing. The remaining heat is used to preheat subsequent kiln chambers, ensuring sufficient temperature and heat for each chamber, improving the consistency of pottery quality. A flame channel is used to divert flame and smoke, allowing for a more even distribution of flame and smoke within the kiln chamber, improving firing quality and yield, and enhancing the applicability of the dragon kiln. This invention has the advantages of good pottery quality consistency, rapid kiln chamber heating, high yield, and good applicability.

The invention provides a submerged arc furnace bottom lead discharging device and a technological method.The submerged arc furnace bottom lead discharging device comprises a lead discharging execution unit, a heating control unit, a temperature measuring unit and a lead liquid recycling unit, the lead discharging execution unit comprises a lead discharging pipeline penetrating through the furnace bottom, and the lead discharging pipeline is used for guiding out lead liquid accumulated at the furnace bottom; the heating control unit comprises a full-digital induction heating power supply and an induction coil wound outside the lead discharging pipeline, the full-digital induction heating power supply outputs high-frequency alternating current to the induction coil, and the lead discharging pipeline is heated through electromagnetic induction, so that lead liquid in the pipeline is heated; the temperature measuring unit comprises a main temperature measuring system and an auxiliary monitoring module and is used for collecting pipeline temperature signals in real time and monitoring pipeline temperature distribution. The lead liquid recycling unit comprises a lead taking box which is arranged at the bottom of the submerged arc furnace and used for receiving the lead liquid flowing out of the lead discharging pipeline. According to the technical scheme, the deposited lead at the furnace bottom can be discharged at any time.

The embodiment of the invention relates to the field of metal remelting, in particular to a device for manufacturing radioactive materials into molten ingots convenient to open and close, which comprises a body, a melting assembly, a material conveying assembly, an ingot forming assembly, a cooling assembly, a vacuumizing assembly and a conveying assembly, the melting part is arranged in the shell, the shell is arranged to be fixedly connected with the body, the radioactive materials are input into the melting part, and the radioactive materials are converted into a molten state in the melting part; the melting piece opening and closing piece is arranged on the melting piece, an opening is formed in the melting piece, and the melting piece opening and closing piece is arranged to enable the opening to communicate with or not communicate with the material conveying assembly. According to the device convenient to open and close and used for preparing the molten ingot from the radioactive materials, circulation between the material conveying assembly and the melting piece opening is controlled through the melting piece opening and closing piece, the number of put materials can be controlled, and it is ensured that the radioactive materials are evenly distributed in the melting piece.

The application provides an aluminum electrolysis waste heat recovery device, and relates to the field of waste heat recovery, and aims to solve the problem of environmental pollution caused by heat loss in air through smoke during electrolysis of aluminum. The recovery device comprises: a smoke recovery assembly installed at one end of a smoke outlet of an electrolytic cell; a heat exchange box, a side wall of the heat exchange box being provided with a smoke inlet and an exhaust port, the smoke inlet being connected with the other end of the smoke recovery assembly; a rotating shaft installed in the heat exchange box, an inner cavity being arranged in the rotating shaft; a plurality of heat radiating fins, one end of each heat radiating fin being connected with the rotating shaft, a heat exchange chamber being arranged on each heat radiating fin, and a heat exchange channel being formed between adjacent two heat radiating fins; a medium conveying assembly installed at one end of the rotating shaft and communicated with the inner cavity; a medium return assembly installed at the other end of the rotating shaft and communicated with the heat exchange chamber; and a driving assembly connected with the rotating shaft. The application collects and processes the smoke generated during electrolysis of aluminum, so that the heat in the smoke is effectively utilized, and the pollution of heat to the environment is reduced.

The application provides a combustion method and system for a ceramic roller kiln for hydrogen ammonia fusion, and relates to the technical field of combustion. The method comprises the following steps: S1: a liquid ammonia storage device stores liquid ammonia and prevents leakage; S2: a conversion pressure reduction device is converted into ammonia gas; S3: a liquid ammonia hydrogen production device decomposes liquid ammonia into H2 and N2; S4: a gas mixing device adds first mixed gas to the ammonia gas to obtain second mixed gas; S5: the second mixed gas is introduced into the ceramic roller kiln for combustion; and S6: a tail gas treatment device adopts a first tail gas treatment method and / or a second tail gas treatment method to treat NO x X and the like in the ceramic roller kiln. The application uses mixed gas as fuel in the combustion firing process of the ceramic roller kiln, can decompose liquid ammonia to obtain hydrogen, makes the whole combustion firing process stable and controllable, adopts multiple tail gas treatment methods to treat the generated NO x X and the like, so as to reduce the emission amount of harmful substances in the tail gas.

The application provides a gas circulation system of a ceramsite calcining kiln, and belongs to the technical field of pollution gas treatment. The gas circulation system of the ceramsite calcining kiln comprises a drying hot air section, a preheating section, a sintering section, a soaking section, a rapid cooling section and a slow cooling section arranged in sequence, the drying temperature of the drying hot air section is 100-200 DEG C, the preheating temperature of the preheating section is 300-900 DEG C, the oxygen content in the preheating section is 10%-17%, the preheating section is internally provided with a dioxin inhibiting part, the dioxin inhibiting part comprises a first inhibiting part provided with ammonium sulfate solid and a second inhibiting part provided with organic amine solid base, and the application further comprises a hot air circulation system 1 and a hot air circulation system 2. The gas circulation system has good dioxin gas treatment capacity, high heat source utilization rate, reasonable structure, and performs dust removal treatment on the exhaust gas flow, and the discharged gas has no pollution to the environment.

The application provides a ceramic sintering device with a protection structure, and belongs to the technical field of ceramic production machinery, which comprises a sintering device, a closing door is rotationally connected to the front part of the sintering device, a protection seat is arranged on the bottom side of the inside of the sintering device, a detachable ceramic sintering table is nested and connected to the upper part of the protection seat, and a sintering chamber is arranged in the sintering device. Three water collecting devices are arranged at three space positions of the upper, middle and lower parts of the ceramic sintering device, a water scraping plate is connected to the upper part of the water collecting device, water is conveniently collected into a water collecting box or a water receiving chute, meanwhile, the water collecting device is used in cooperation with a water blocking cover, water droplets are effectively prevented from falling on the ceramic and affecting the sintering operation, a minimized ceramic sintering space is formed through the sintering chamber and a sintering closing seat, there is almost no temperature gradient in the inside, the sintering effect is improved, and the detachable ceramic sintering table is convenient to separate from the sintering device, cleaning and maintenance are facilitated, and the operation efficiency is improved.

The invention relates to the technical field of aluminum-lithium alloy smelting, in particular to a vacuum induction smelting furnace for aluminum-lithium alloy machining, which comprises an outer furnace body, a magnetic induction crucible and a vacuum pipe drawing frame, the magnetic induction crucible is arranged in the outer furnace body, a feeding pipe is mounted at the upper end of the outer furnace body in a penetrating manner, and the feeding pipe can control opening and closing with the interior of the outer furnace body; the feeding pipe is coaxially located on the upper side of the magnetic induction crucible, a main ring frame is arranged at the lower end of the feeding pipe in a contact mode and can move front and back in the outer furnace body through power, and the upper end and the lower end of the main ring frame communicate with the inner ring face. According to the material screening device, during vacuumizing and swinging of the material screening mechanism, powder raw materials gradually fall downwards from the material distributing holes, the powder raw materials falling layer by layer are gradually dispersed, air in powder is pumped out through the material screening mechanism and a breathable material of the main ring frame, the air in the powder raw materials can be fully pumped out, and therefore the powder raw materials are fully pumped out. And oxygen is effectively prevented from remaining among the powder.

The present application provides an assembly system and working method of auxiliary materials and crucible of Acheson graphitization furnace, which reduces workshop construction cost, improves working environment, reduces labor, improves work efficiency, ensures the placing accuracy of the crucible, and the filling density of the resistance material is better than manual filling, thereby ensuring the graphitization effect. The present application comprises a travelling crane, a stereoscopic warehouse, an auxiliary material cooling system, an auxiliary material turnover system, a crucible turnover system, a powder replacement system, a working vehicle and a track. The working vehicle comprises a canning vehicle, a flat laying vehicle, a taking and placing vehicle and a suction vehicle. The present application comprises the following steps: auxiliary material preparation, auxiliary material filling, green crucible loading, auxiliary material discharging, mature crucible discharging, green powder filling and mature powder discharging.

The invention relates to the technical field of magnesium metal production, in particular to a charging structure and method for a magnesium metal vertical reduction furnace, the charging structure comprises spherical charging devices, magnesium steam overflow holes are formed in the spherical charging devices, the spherical charging devices are filled with pellet materials, and the multiple spherical charging devices are connected one by one through steel ropes; and a plurality of spherical feeders are arranged in the reduction tank when the reduction furnace is used for processing. The spherical charging devices are arranged to be filled with pellet materials, the spherical charging devices are arranged in the reduction tank, and the problems that magnesium steam is difficult to overflow, the reduction efficiency is low and discharged slag is bonded due to the fact that the pellet materials fall and are broken when being directly poured into the reduction tank are solved.

The present application relates to the technical field of metal magnesium production, and particularly relates to a metal magnesium vertical reduction furnace loading structure and method, wherein the loading structure comprises a spherical charger, the spherical charger is provided with a magnesium vapor overflow hole, the spherical charger is filled with pellet material, a plurality of spherical chargers are connected by steel ropes one by one, and the plurality of spherical chargers are arranged in a reduction tank during processing of the reduction furnace. The spherical charger is filled with pellet material, and the spherical charger is arranged in the reduction tank, so that the problem of difficulty in magnesium vapor overflow, low reduction efficiency and slag sticking caused by falling and crushing of the pellet material when the pellet material is directly poured into the reduction tank is solved.

The present application relates to the technical field of metallurgical site mine water detection, and specifically discloses an industrial mine water tank automatic slag breaking device and method; the device comprises an industrial camera, the industrial camera is arranged above an industrial mine water tank, the industrial camera is connected with a controller through a signal conversion line, the controller is connected with a motor through a signal conversion line, the motor is connected with a winding device, one end of a cable is wound on the winding device, the other end of the cable is connected with a slag removal hammer, and the slag removal hammer is located above the industrial mine water tank. The device is used for automatically detecting the mine water crust condition of a detection point, timely cleaning, avoiding the influence on the detection of online detection equipment, improving the operation efficiency of the entire detection equipment, and reducing the amount of manpower used.

The invention provides a wall brick and floor brick co-fired ceramic formula. A wall brick comprises 3%-5% of sodium sand, 5%-7% of low-temperature sand, 5%-7% of yellow mud, 7%-9% of mixed mud, 7%-9% of potassium sand, 8%-12% of medium-temperature sand, 5%-7% of kaolin, 7%-9% of water frosted sand, 6%-8% of high alumina, 8%-10% of high-temperature sand, 2%-4% of magnesian mud, 13%-17% of red sandstone, 6%-8% of polishing mud and 2%-4% of recycled blank. The floor tile comprises 7%-9% of sodium mud, 5%-7% of low-temperature sand, 5%-7% of yellow mud, 3%-5% of mixed mud, 8%-12% of potassium sand, 4%-6% of kaolin, 11%-15% of water frosted sand, 6%-8% of high alumina, 10%-14% of potassium feldspar, 4%-6% of high-temperature sand, 3%-5% of magnesian mud, 8%-12% of red sandstone, 6%-8% of polishing mud and 2%-4% of recycled blank. The invention further provides a production process for co-firing the wall tiles and the floor tiles. The production process comprises the steps of raw material treatment, forming, firing, post-processing and the like. According to the invention, the wall brick and the floor brick are fired in the same kiln, various physical and chemical performance indexes of the product can meet the requirements of national standards, and meanwhile, the loss of the brick blank needs to be controlled to be extremely low. Therefore, the production time and the production cost can be greatly reduced, and the competitive capacity of enterprises is improved.

The application relates to the technical field of lead smelting equipment, in particular to a device for deoxidizing a lead smelting terminal melt in a melt furnace and a use method thereof, which comprises a bottom plate, a lead smelting furnace is arranged in the middle of the upper end face of the bottom plate, a feeding pipe is communicated with the middle of the right side of the lead smelting furnace, a feeding hopper is arranged at the upper end of the feeding pipe, a sliding column is fixedly connected to the right rear end of the upper end face of the bottom plate, a treatment box is slidingly connected to the sliding column, a second gear is fixedly connected to the lower end of a guide rod through a pin shaft, the lower end of the guide rod is rotationally connected to the treatment box through the pin shaft, a rack is meshingly connected to the second gear, and the lower end face of the rack is fixedly connected to the bottom plate. The device can automatically crush and screen the added materials, avoids material condensation, improves the deoxidization efficiency, has a stirring effect on the inside of the lead smelting furnace, ensures uniform heating of the materials, can clean the inside of the lead smelting furnace, and is convenient for subsequent reuse.

The present disclosure relates to a calcium carbide slag suspension calcination system, which comprises a raw material bin, a suspension calciner and a first cyclone separator. The suspension calciner comprises a main combustion zone and a burn-out zone located above the main combustion zone along the extension direction thereof; the main combustion zone is configured to perform under-oxygen calcination of calcium carbide slag from the raw material bin in the main combustion zone; the burn-out zone is configured to perform calcination of the calcium carbide slag after the under-oxygen calcination in the main combustion zone in the burn-out zone; the first cyclone separator is configured to communicate with the outlet of the suspension calciner to perform gas-solid separation; the separated solid phase is configured to be fed into the suspension calciner in a proportionally adjustable manner for repeated calcination, and into a cooling system for cooling to form active calcium oxide or over-burned calcium oxide. The system reduces the generation of nitrogen oxides in the calcination process by using multi-zone calcination, and can adjust the circulation ratio according to the requirements to selectively produce active calcium oxide or over-burned calcium oxide, thereby improving the diversity of the calcination products.