1244results about "Rotary drum furnaces" patented technology

The invention relates to the technical field of lime shaft kilns, in particular to a full-automatic Kawasaki rotating lime shaft kiln device, and aims to solve the problems that during combustion of an existing lime shaft kiln, due to the fact that flame heat is concentrated on a local part, a disordered and uniform temperature field cannot be formed, and the calcination temperature of limestone is not uniform; limestone processing is achieved through the combustion mechanism on the supporting seat, the soaking assembly in the thermal insulation shell guides materials and cooperates with the combustion assembly for preheating, a flame jet device of the combustion assembly jets flames, the flames act with heating gas blown out by the high-pressure air pump to form a uniform temperature field, and the material guiding plate guides the materials to enter the rotating processing part. And the processing component disperses the materials through the rotating and material uniformizing assembly, so that the limestone is uniformly heated, and the uniform effect during limestone calcination is improved.

The invention relates to a process for extracting iron from red mud by using hydrogen reduction and electrolysis technologies, the red mud is a by-product generated in the industrial production process of aluminum, the environmental burden caused by the by-product can be solved, the carbon emission can be reduced, and the development of a green metallurgical technology can be promoted. Comprising the following steps: conveying red mud serving as a raw material into a rotary furnace, conveying hydrogen serving as a reducing medium into the rotary furnace, enabling iron oxide in the red mud to form hydrogen reduced iron in a furnace heating state and a hydrogen reducing atmosphere, conveying the red mud containing the hydrogen reduced iron into a sulfuric acid solution, the hydrogen reduced iron is dissolved in the sulfuric acid solution to form a sulfuric acid solution containing iron ions, the sulfuric acid solution containing the iron ions serves as an electrolyte in an electrolysis device, and electrolytic pure iron formed by electrolytic deposition of the iron ions is obtained through the electrolysis device.

The invention discloses a raw coal drying dust removal system with a waste heat recovery function and a raw coal drying method. The raw coal drying dust removal system comprises a crushing assembly, an electric auxiliary heating rotary kiln, a cooling section rotary kiln, a gas-solid separator, a tail gas treatment dust removal assembly, a waste heat recovery heat exchanger and a heat pump system. The crushing assembly, the electric auxiliary heating rotary kiln and the cooling section rotary kiln are communicated in sequence; a first gas outlet of the electric auxiliary heating rotary kiln is communicated with the gas-solid separator; the gas-solid separator is communicated with the waste heat recovery heat exchanger through the tail gas treatment dust removal assembly; the heat pump system is connected with the cooling section rotary kiln and the waste heat recovery heat exchanger, and an air outlet of the heat pump system is communicated with an air inlet of the electric auxiliary heating rotary kiln. By means of the waste heat recovery heat exchanger and the heat pump system, originally discharged waste heat is recycled, energy consumption of electric auxiliary heating is reduced, and recovery and temperature rise of tail gas heat are achieved.

The application relates to the technical field of data processing, in particular to a kiln data monitoring and early warning method based on reinforcement learning, which comprises the following steps: acquiring intelligent gas meter readings at each collection time in each cycle during the operation of a rotary kiln and temperatures at each collection time at each monitoring point; calculating heat space diffusivity at each monitoring point at each collection time in each cycle, calculating heat time dissipation and heat propagation index at each monitoring point at each collection time in each cycle; constructing heat abnormality degree at each monitoring point; calculating energy consumption abnormality degree of the rotary kiln; calculating heat preservation degree at each collection time in each cycle; constructing comprehensive abnormality degree of the rotary kiln; constructing a prediction autoregressive term number according to the comprehensive abnormality degree of the rotary kiln, acquiring a predicted energy consumption of the rotary kiln, and monitoring abnormal conditions of rotary kiln operation energy consumption in combination with a preset energy consumption. The application aims to improve the reliability of rotary kiln operation energy consumption abnormality monitoring.

The present application relates to a kind of internal heating type continuous rotary heating process and device, device includes self-heating graphite tube rotary drum, electrode bar, the inner cylinder of the self-heating graphite tube rotary drum is graphite tube, both ends of the graphite tube are connected electric slip ring, and are heated by electrode bar power supply.The present application provides a kind of internal heating type continuous rotary heating device compared with prior art, the inner cylinder of the self-heating rotary kiln of the present application adopts graphite material, graphite cylinder both ends adopt slip ring power supply, graphite tube relies on its resistance heating, and heating electric power is adjusted according to set furnace temperature.The furnace temperature of the present application can be high, can be low, from several hundred degrees to thousands of degrees (2000 ℃ above) can be continuously adjusted, heated material can be powder or granular material, protective gas is inhaled in furnace, presents slightly positive pressure or slightly negative pressure, since it can be isolated air, especially suitable for the coating of carbon material, low-temperature carbonization, high-temperature carbonization can also realize the heating treatment of other materials.

The invention relates to the technical field of rotary kilns, and particularly discloses a modular adjustable center heating rotary kiln which comprises a kiln body, a center heating module and an outer wall. The kiln body is of an annular hollow rotatable barrel structure and is composed of an outer sleeve and an inner sleeve, and a supporting structure is arranged between the outer sleeve and the inner sleeve. Two ends of the outer sleeve and the inner sleeve are provided with belt wheel supports, and one end is provided with a driving motor; annular sealing devices are arranged at two ends of the kiln body; the annular sealing device is provided with a feed port and a discharge port; the central heating module consists of a plurality of heating units, a truss supporting structure, a power supply bus and a control part; the power bus is fixed on the truss supporting structure and penetrates through the interior of the inner sleeve; the plurality of heating units are connected with the power supply bus and can slide along the truss supporting structure to adjust the position, the number and the density; the control part is composed of a control system, a communication bus and an execution mechanism. The thermal conversion efficiency, the energy utilization rate and the temperature field balance of the rotary kiln can be effectively improved.

The invention discloses a cement production equipment fault early warning method and system, and relates to the technical field of cement production equipment health monitoring, and the method comprises the steps: building a cylindrical coordinate system on the surface of a rotary kiln cylinder, and dividing the cylindrical coordinate system into a plurality of independent visual monitoring surface elements; collecting infrared and visible light image sequences in multiple working conditions and multiple continuous rotation periods for each visual monitoring surface element in a healthy state, and constructing a healthy visual fingerprint reference library representing stable state characteristics of the visual monitoring surface element; according to the method, the rotary kiln cylinder visual monitoring surface elements are divided, the healthy visual fingerprint reference library is constructed, real-time accurate comparison is achieved in combination with the twin neural network, cylinder state monitoring can be comprehensively covered, and limitation of local monitoring is avoided; and through time sequence deviation degree calculation and spatial correlation analysis, the deterioration trend and spatial correlation characteristics of the fault precursor can be captured in an early stage, and the early warning timeliness is greatly improved.

The invention relates to the technical field of automatic control, in particular to a linkage control method and system for a combustion-supporting fan and a gas valve of a rotary kiln, and the method comprises the steps: obtaining a combustion-supporting air flow sequence, a gas flow sequence and a gas valve opening sequence corresponding to a current time node, respectively carrying out first-order difference processing to obtain a combustion-supporting air flow first-order difference sequence, a gas flow first-order difference sequence and a gas valve opening first-order difference sequence; and outputting the fan frequency of the combustion fan and the opening degree of the gas valve by using an improved active-disturbance-rejection control algorithm, and performing linkage control on the combustion fan and the gas valve based on the fan frequency of the combustion fan and the opening degree of the gas valve. The problem that the control precision is not high under different working conditions is solved.

The invention relates to the technical field of battery material sintering, in particular to a multi-section tandem type rotary kiln sintering system. The multi-section tandem rotary kiln sintering system comprises a kiln body unit and a material mixing mechanism. The multiple kiln body units are sequentially arranged in series in the material conveying direction, and the multiple kiln body units are arranged in a stepped mode in the gravity direction. And each kiln body unit corresponds to different process sections of material sintering. The material mixing mechanism comprises a plurality of sets of air inlet assemblies arranged on the wall faces of the kiln body units, the air inlet assemblies communicate with the inner spaces of the kiln body units, and the air inlet assemblies are configured to introduce airflow into the kiln body units so as to blow up materials. According to the multi-section tandem rotary kiln sintering system, the distribution uniformity of materials in the kiln body units can be improved, the phenomenon of overburning or insufficient sintering time of the materials is reduced or avoided, and the comprehensive production cost is reduced while the product quality is improved.

The present invention relates to a system method system based in a IoT (Internet of Things) platform for monitoring solids treatment machinery in fertilizer, mineral, or chemical sectors, which allows obtain information about the machines state and performance remotely and automatically, and in real time. This invention combines a set of sensors that measures different parameters such as position, vibration or temperature of different machinery component; with a network that receives that information and stores it into a cloud database which and an app to check said information.

The utility model relates to the technical field of preheaters, and provides an efficient preheater for a rotary kiln, which is characterized in that a distributor is arranged in a shell and is used for dividing the interior of the shell into an upper preheating bin and a lower preheating bin; the discharging chute tube is arranged in the shell and located on the periphery of the distributing device, the upper end of the discharging chute tube is communicated with the upper preheating bin, and the lower end of the discharging chute tube is communicated with the lower preheating bin; one end of the lower preheating pipeline is used for being communicated with a waste gas discharge pipe, and the other end of the lower preheating pipeline is used for extending into the lower preheating bin; one end of the upper preheating pipeline is used for being communicated with a waste gas discharging pipe, and the other end of the upper preheating pipeline is communicated with the upper preheating bin. One end of the lower waste gas recovery pipe is communicated with the lower preheating bin, and the other end of the lower waste gas recovery pipe is communicated with waste gas treatment equipment; one end of the upper waste gas recovery pipe is communicated with the upper preheating bin, and the other end of the upper waste gas recovery pipe is communicated with the lower waste gas recovery pipe. According to the technical scheme, the problem that the preheating effect of a preheater on materials needs to be improved in the prior art is solved.

The application discloses a zinc extraction process from secondary zinc oxide, and belongs to the technical field of zinc oxide preparation. In the rotary kiln roasting, composite porous flaky reducing carbon with waste paper, rice husk and wooden chips as main raw materials is used as a reducing agent. Compared with the commercially available anthracite, the composite porous flaky reducing carbon has low cost, realizes resource recycling, and has a large specific surface area and porous properties. A multi-level structure of flaky layers and pores is constructed, so that the contact sites of the composite porous flaky reducing carbon and the secondary zinc oxide are increased. The porous structure can avoid the caking of the material layer caused by the stacking and agglomeration of the flaky layers, and avoid the obstruction of gas flow, so that the pain points of the traditional reducing agent, such as local agglomeration and insufficient contact, are solved. The surface of the composite porous flaky reducing carbon is deposited with calcium oxide. The presence of the calcium oxide can react with a small amount of sulfur elements generated in the rotary kiln roasting process of the composite porous flaky reducing carbon, so as to generate calcium sulfate and reduce the content of sulfur dioxide.

The utility model provides an efficient casing pipe type internal heating drum cracking furnace kiln which comprises a heat energy device, a sealed material conveying device, a furnace cylinder system and a roller system, the furnace cylinder system comprises an outer kiln pipe, an inner kiln pipe is fixedly connected in the outer kiln pipe, and the front end of the inner kiln pipe is fixedly connected with the sealed material conveying device. The rear end of the inner kiln pipe is further fixedly connected with a spiral sealing deslagging mechanism, a cracking gas leading-out pipe is inserted into the rear end of the spiral sealing deslagging mechanism, and the rolling belt of the outer kiln pipe is in rolling connection with the rolling wheel system. The rotational flow plate is designed on the outer wall of the inner kiln pipe, high-temperature hot air rotates and flows around the inner kiln pipe, the outer surface of the inner kiln pipe is subjected to uniform thermal radiation, the heat collecting pieces are uniformly arranged on the outer wall of the inner kiln pipe, the heat collecting area of the inner kiln pipe is increased, the standing time of the hot air in the hot air channel is prolonged, and the heat collecting effect is improved. The heat collecting efficiency of the inner kiln pipe is improved by 30%-40%, and the heat energy utilization rate and the thermal cracking gasification efficiency are improved.

The invention belongs to the technical field of cement production line transformation, and discloses a method for transforming a cement clinker production line into a coal gangue suspension calcination production line, the cement clinker production line comprises five stages of double-series preheaters and a decomposing furnace, the five stages of double-series preheaters are divided into A-row preheaters and B-row preheaters, a preheater in the column A is transformed into a preheating device of the coal gangue powder suspension calcination production line, a preheater in the column B is transformed into a gas-solid separation cyclone and a cooling device of the coal gangue powder suspension calcination production line, and a pipeline furnace is arranged between an air outlet of a decomposing furnace and an air inlet of the gas-solid separation cyclone. A decomposing furnace and a pipeline furnace are jointly transformed into a coal gangue suspension calcining furnace. According to the method, an obsolete cement clinker production line is transformed into a coal gangue suspension calcining production line with the working procedures of coal gangue grinding, conveying, metering, preheating, calcining, cooling and the like.

The invention discloses a petroleum coke calcination waste heat stepped recovery rotary kiln system, which belongs to the technical field of rotary kilns, and comprises a kiln body, the kiln body is sequentially provided with a preheating zone and a calcination zone, and the kiln body between the calcination zone and a kiln head is provided with a cooling zone. The cooling zone comprises a first-stage cooling heat exchange section and a second-stage cooling heat exchange section which are sequentially arranged towards the kiln head, the first-stage cooling heat exchange section is used for preheating secondary air, the second-stage cooling heat exchange section is used for cooling calcined coke and recycling heat energy, an annular fin-shaped cooler is arranged on the inner wall of the kiln body of the second-stage cooling heat exchange section, and the annular fin-shaped cooler is used for cooling the calcined coke. A kiln head cover of the kiln body is provided with a rotary joint, and the annular fin-shaped cooler is connected with the outside-kiln heat exchange station through the rotary joint. The cooling zone is arranged in the cylinder of the rotary furnace, secondary air is preheated through the first-stage cooling heat exchange section, heat is recycled in the second-stage cooling heat exchange section through double media of heat conduction oil and demineralized water in a stepped mode, the overall heat recovery rate is obviously increased, and sensible heat waste and comprehensive energy consumption are obviously reduced.

The corundum-silicon carbide-mullite castable is prepared from sintered mullite particles, silicon carbide fine powder, activated aluminum oxide micro powder, silicon dioxide micro powder, composite rare earth oxide fine powder, aluminum titanate fine powder, a binding agent, a water reducing agent, explosion-proof fibers and porous composite corundum-silicon carbide particles. The porous composite corundum-silicon carbide particles are formed by sintering fused corundum particles and nano silicon carbide powder through in-situ reaction, micron-sized pore channels which are communicated with one another are formed in the porous composite corundum-silicon carbide particles, and the surfaces of the particles are coated with a compact mullite-corundum complex phase layer, so that thermal stress can be effectively buffered, and permeation of zinc and alkali vapor can be blocked; the low thermal expansion characteristic of aluminum titanate and the grain boundary purification effect of rare earth oxide are matched, thermal shock resistance and erosion resistance are synergistically improved, and excellent thermal shock resistance, chemical erosion resistance, high strength and wear resistance are shown under the harsh working condition of the zinc oxide rotary kiln.

A system for making cementitious material, the system comprising: a raw material preparation subsystem; a raw material processing subsystem; a process atmosphere generation subsystem; and a reaction chamber subsystem. A method for making cementitious material, the method comprising: comminuting an input material; subjecting the input to a vapor-based synthesis; subjecting the input to a reaction atmosphere; producing an exhaust; processing the exhaust; and forming a carbonate product.

The invention relates to the technical field of rotary kiln incinerator multi-parameter control, in particular to a rotary kiln incinerator multi-parameter collaborative optimization control system which comprises a temperature monitoring module, a spraying control module, an ash monitoring module, a coking analysis module and a regulation and control feedback module. According to the method, the corresponding hazardous waste incineration stages in all the areas in the rotary kiln incinerator are monitored in real time, due to the fact that the incineration areas are extremely prone to melting to form viscous melts, the melts adhere to the inner wall of the rotary kiln to cause coking of the rotary kiln, flowing of materials is hindered along with thickening of the coking materials, and therefore the hazardous waste incineration efficiency is improved. As the refractory material is extremely easy to damage and fall off, the service life of the refractory material is prolonged by analyzing the ash, identifying the wall-hanging high-risk period and the formation cause of the coking product, timely regulating and controlling each operating parameter in the rotary kiln incinerator, identifying the coking caused by refractory material degradation through the damage early warning model, and timely responding to the shutdown of the rotary kiln. And effective coking control of the rotary kiln incinerator is realized.

The utility model provides rotary furnace roasting equipment for recycling tailing slag, which comprises a main plate, the main plate is rectangular, barrier plates are arranged on two sides of the main plate, the barrier plates are symmetrically arranged on the main plate, two or four barrier plates are arranged on two sides of the main plate, and limiting strips are arranged on the barrier plates. A square driving box is arranged in the middle of the barrier plate, rollers are arranged below the driving box, a motor is arranged in the driving box to drive the rollers to move, the rollers are distributed on the two sides of the bottom of the driving box, and the rollers are attached to the barrier plate to prevent the movement tracks of the rollers from deviating and are located at the bottoms of the limiting strips; and the limiting strip prevents the driving box from rolling over.

The utility model provides a dry process cement clinker firing device which comprises a preheating mechanism, a decomposing furnace, a material spraying assembly, a rotary kiln and a cooling machine, the preheating mechanism is used for preheating raw materials, the decomposing furnace is connected with the preheating mechanism, the decomposing furnace is used for receiving and decomposing the preheated raw materials, the material spraying assembly is connected with the decomposing furnace, and the rotary kiln is connected with the cooling machine. The material spraying assembly is used for evenly spraying preheated raw materials into the rotary kiln, the rotary kiln is used for calcining the raw materials to form clinker, the rotary kiln sequentially comprises a shell, at least two heat insulation layers and a heat-resistant lining from outside to inside, and the cooling machine is used for cooling the clinker. Due to the fact that the material spraying assembly evenly sprays the preheated raw materials into the rotary kiln, the raw materials can be heated more sufficiently and evenly in the rotary kiln, the calcining process is more thorough, and the clinker quality is further guaranteed. In addition, due to the fact that the rotary kiln comprises at least two heat insulation layers, the heat insulation effect of the rotary kiln is better, and the calcination process is more thorough.

The invention relates to the technical field of lithium ion battery material preparation equipment, in particular to a battery negative electrode material production continuous rotary furnace which comprises a furnace body module, a segmented temperature control heating module and a spiral material guide adjusting module, a wear-resistant ceramic coating is arranged on the inner wall of a rotary furnace cylinder, and the rotary furnace cylinder is divided into multiple segments such as preheating, carbonization and heat preservation in the axial direction; a high-temperature-resistant partition plate is arranged between every two adjacent sections to achieve temperature zone isolation, an independent electric heating unit is arranged on the outer side of each section and matched with an infrared temperature measuring sensor and a temperature controller to achieve precise closed-loop temperature control, and a spiral conveying paddle penetrates through a feeding hopper, a furnace barrel and a discharging bin and is driven by a spiral motor to achieve constant-speed continuous conveying of materials. The inner barrel of the rotary furnace barrel is in meshing transmission with a reduction gear driven by a driving motor through a rotary gear ring, and operation is stable and reliable. The outer cylinder is provided with a fixed base and an expansion bolt to adapt to thermal expansion and cold contraction. The feeding bin and the discharging bin are both provided with exhaust pipes, volatile gas is exhausted in time, and the device is suitable for efficient and stable carbonization production of lithium ion battery cathode materials.

The utility model discloses kiln coating hanging equipment for a hazardous waste rotary kiln, and belongs to the technical field of hazardous waste treatment. Comprising a rotary kiln body, a conveying unit connected with a feeding port of the rotary kiln body, a burner arranged at the tail of the rotary kiln body and a temperature control unit used for controlling the temperature of a kiln coating. The temperature in the kiln is monitored in real time through the online infrared thermal imager, the interior and the exterior of the kiln are cooled in an internal and external collaborative cooling mode, the cooling efficiency is remarkably improved, the kiln body is prevented from being damaged due to high temperature, and accurate control over the temperature in the kiln is achieved; by optimizing the design of the material conveying unit, the temperature control unit and the air duct system, the defects of existing kiln coating equipment in the aspects of refractory material feeding, temperature control and cooling efficiency are overcome, the kiln coating equipment has the advantages of being uniform in feeding, accurate in temperature control, efficient in cooling, reliable in operation, convenient to maintain and the like, the operation efficiency of the hazardous waste rotary kiln is remarkably improved, and the service life of the hazardous waste rotary kiln is remarkably prolonged. And the operation cost is reduced, and wide application prospects are achieved.

The application provides a cement rotary kiln batching and feeding method for synergistically treating flue gas adsorbents, and relates to the technical field of cement clinker production, and comprises the following steps: sampling flue gas adsorbents for high-temperature thermogravimetric analysis, and establishing a batch fuel characteristic file; calculating a mixed equivalent calorific value according to the calorific values of new and old batches, and adjusting the mixed equivalent calorific value according to the calorific value difference gradient; sampling from a homogenizing bin discharge pipeline for high-temperature thermogravimetric analysis to obtain a measured calorific value and a real-time combustion characteristic index; comparing the measured calorific value with the calibrated mixed equivalent calorific value, and performing corresponding operations according to the deviation degree; establishing a heat load balance model to determine the optimal feeding amount of flue gas adsorbents and coal powder; determining the combustion type according to the real-time combustion characteristic index, and determining the mixing mode of flue gas adsorbents and raw materials, feeding after mixing according to the optimal feeding amount and raw materials, and simultaneously spraying coal powder into the cement rotary kiln. The scheme can improve the temperature stability of the cement rotary kiln, and realizes the recycling of flue gas adsorbents.

The utility model relates to the technical field of rotary kiln, proposes a zinc oxide rotary kiln, including the kiln body, the inside of kiln body is equipped with a plurality of heating flow cavity for the material heating, is equipped with the screen between adjacent heating flow cavity, and the screen is fixedly arranged in the inside of kiln body. Through the above technical scheme, the problem that the gap between the large -grained material is easy to be blocked by small -grained material and thereby influences the heating uniformity of large -grained material in the related art is solved.

The utility model belongs to the technical field of rotary kilns, and particularly relates to a rotary kiln material stirring device. The device comprises: a cylinder; a first blade and a second blade; the first blades are circumferentially and obliquely arranged at intervals along the inner wall of the barrel, and the inclination direction is the same as the rotating direction of the barrel; the second blade is a grid blade, the root of the second blade is connected with the tail end of the first blade, and the inclination direction of the second blade is opposite to the rotating direction of the barrel. The stirring device is used for solving the problem that the stirring device in the rotary kiln cannot uniformly granulate powder. In the rotating process of the barrel body, the first blades are connected with the inner wall of the barrel body, materials can be turned over, a material layer can be continuously updated, grid holes in the second blades can form disordered updated materials in a material screening mode, and material raising can be avoided to the maximum extent in the rotating material turning process.

The invention relates to the technical field of zinc extraction rotary kiln processing devices, in particular to a detection method, system and device for reducing ring formation of a zinc extraction rotary kiln, and the method comprises the following steps: step 1, cleaning the inner side wall of the rotary kiln, removing adhesive substances, constructing a 1: 1 three-dimensional geometric model by using 3D software according to the actual internal size of the rotary kiln, and calculating the actual internal size of the rotary kiln; the method comprises a first step of embedding equipment such as a thermal imager, a thermocouple, a combustor and an air pipe into a geometric model according to actual installation positions, and marking the monitoring range of the equipment, a second step of establishing a three-dimensional mapping relation of'equipment data-space coordinates', namely distributing exclusive space coordinate codes for each piece of detection equipment, and a third step of increasing the early warning advance by 80% through an industrial communication protocol, and aiming at different first-stage, second-stage and third-stage scenes, differentiated monitoring frequencies and triggering conditions are formulated, and air volume and air pressure linkage adjustment of the feeding combustion air duct is matched, so that resource waste or insufficient prevention and control caused by one-step regulation is avoided.

The heat treatment plant according to the invention has a process chamber and at least one sealing arrangement to seal the process chamber against the environment to prevent the ingress of false air, wherein the sealing arrangement has at least one first seal facing the environment and at least one second seal facing the process chamber, and wherein an intermediate chamber is formed between the first and the second seal, which is connected to a vacuum source for extracting gas that has entered the intermediate chamber.

The utility model discloses a kind of RKEF rotary kiln multilayer ring plate sealing devices, including rotary kiln main body, and the kiln tail side of rotary kiln main body is equipped with the kiln tail sealing disc for electrically adjusting, the driving locking piece is equipped on the rotary kiln main body by support end plate, through the combination design of inner ring plate, middle ring plate, outer ring plate and the combination of sealing sleeve ring with air hole, utilize kiln atmospheric pressure into multilayer sealing ring plate clearance through air hole, driving ring plate inside and outside expansion realizes dynamic sealing, without additional power can self-adapting kiln atmospheric pressure fluctuation and barrel thermal expansion and contraction, eccentric swing caused clearance change, ventilation precision electrically adjusted and reliably locked innovative setting adjusting screw, adjusting disc and push rod are made of electrically adjusted mechanism, can be realized to the accurate position control of adjusting sleeve by screw transmission, cooperate with the driving locking piece of the threaded locking rod and locking nut on support end plate, ensure the convenience and stability of kiln tail sealing disc position adjustment.

The application discloses a rotary furnace for source dust reduction in waste lithium battery recycling, and belongs to the technical field of lithium battery recycling. The rotary furnace for source dust reduction in waste lithium battery recycling comprises a feeding bin, a furnace body, a furnace pipe, an exhaust hopper, a screw conveyor and a cylinder body. The furnace pipe is arranged in the furnace body, the cylinder body is installed in the furnace pipe, and the cylinder body is open at the top. The conveying mechanism of the screw conveyor is installed in the cylinder body. The feeding bin is fixed above the cylinder body. The exhaust hopper is fixed on the furnace pipe and communicates with the inside of the furnace pipe. The exhaust hopper is located at the feeding end of the furnace body. The rotary furnace can simply and efficiently reduce dust in hot gas and realize black powder recycling.

The present application relates to a rotary kiln cooler with external air chamber, comprising upper bin body, ring beam, central air distributor, chamber air distributor, lower cone bin, discharging cone and air supply pipeline; the rotary kiln cooler uses two different cooling methods to cool materials at different heights; in the upper part of the cooler, a plurality of air distributors embedded in the material layer and adapted to the shape characteristics of the material layer directly supply air to the material layer for pre-cooling; in the lower part of the cooler, the material is divided into multiple streams, and a plurality of air supply chambers are arranged to achieve uniform cooling in multiple regions; the cooler has simple structure, low material cooling temperature, can cool high-temperature materials from about 1100 DEG to more than 30 DEG to 50 DEG above room temperature, and has sufficient cooling, no red material inclusion, high thermal efficiency, and remarkable energy saving and emission reduction effect.