518 results about "Aluminium electrolysis" patented technology

The invention discloses a method for extracting lithium and sodium from overhaul slag through electrochemistry assistance, and belongs to the technical field of aluminum electrolysis lithium-containing solid waste cyclic economic utilization and environmental protection. A method for extracting lithium and sodium from overhaul slag through electrochemical assistance comprises the following steps that the overhaul slag and auxiliary materials are subjected to die-casting forming to prepare an electrode plate, and then lithium and sodium are extracted from the overhaul slag through an electrochemical method. According to the method, for the lithium-containing overhaul slag solid waste generated in the electrolytic aluminum industry, migration and dissolution of metal ions are enhanced through electrochemical assistance in a weak acid environment, so that comprehensive recycling of valuable elements of lithium and sodium is achieved, and meanwhile the recovery rate of lithium can be larger than 90%. In addition, the method can be carried out at low temperature, so that the energy consumption can be obviously reduced, and meanwhile, the equipment investment can be greatly reduced; meanwhile, solid waste resource utilization can be achieved, the risk of secondary pollution is reduced, and good economic and environmental benefits are achieved.

The invention provides an intelligent crust breaking and blanking system based on machine vision. The intelligent crust breaking and blanking system comprises an active detection module, an image acquisition module, an image processing and calculating module, a data communication module, a cell control machine, a high-temperature-resistant insulation structure and a cooling device, the active detection module forms a reference line in an aluminum electrolysis cell monitoring area; the image acquisition module is used for respectively acquiring image data of a motion state of a crust breaking hammer and a material falling process of a blanking port; the image processing and calculating module is used for carrying out preprocessing, feature extraction and calculation on the image to obtain a crust breaking depth parameter and blanking flow data; the data communication module transmits a processing result to the cell control machine, and the cell control machine adjusts the crust breaking set depth and optimizes the blanking interval according to the processing result; the high-temperature-resistant insulation structure carries out physical protection and electrical isolation on key modules, and the cooling device keeps the internal temperature stable and prevents the lens from being polluted. Therefore, the crust breaking depth and the blanking quantity control precision can be improved, the maintenance cost is reduced, and the adaptability to a high-temperature strong electric field environment is improved.

The invention provides a method and equipment for leaching and recycling an aluminum electrolysis waste carbon cathode. The method relates to the field of solid waste treatment, and comprises the following steps: S1, crushing the recycled waste aluminum electrolysis waste carbon cathode by using a jaw crusher, further finely grinding to a certain mesh number by using a vibration mill, and drying for later use; s2, the ground waste carbon cathode is weighed, a certain amount of water is added, the mixture is placed in an ultrasonic instrument at the normal temperature to react for a period of time, and washing residues and washing liquid are obtained through filtering; s3, a sodium hydroxide solution with a certain concentration is added into the washing residues to be mixed, and the mixture is placed in an ultrasonic instrument to react for a period of time at a certain temperature. Compared with a traditional leaching method, the method has the advantages of being high in efficiency and good in effect, the leaching rate of valuable substances is greatly increased, and the valuable substances are recycled through a series of steps such as washing, alkaline leaching, acid leaching and recycling. The method realizes efficient recovery of useful components in the waste carbon cathode, does not produce solid waste and wastewater in the process, is environment-friendly, and realizes effective utilization of resources and harmless treatment of dangerous solid wastes.

The invention relates to a method for recovering lithium and fluorine from aluminum electrolysis hazardous waste, which comprises the following steps: firstly, mixing organic polyol and alkaline hydroxide according to a molar ratio of 1: (0.5-2) to obtain a eutectic solvent; heating the eutectic solvent to 80-150 DEG C, and adding a proper amount of raw material fine powder and calcium oxide for reaction leaching; carbonating and filtering the leachate to obtain lithium carbonate; washing the leaching residues with an acetic acid solution to obtain a calcium fluoride product; the concentration of fluorine ions in the leachate is smaller than or equal to 200 ppm, and the purity of calcium fluoride is larger than or equal to 90%; the leaching rate of lithium in the method is greater than 85%; the slag feeding rate of fluorine is greater than 95%; and no hydrogen fluoride gas is generated in the method. According to the method, a non-toxic and biodegradable eutectic solvent is adopted as a leaching agent, and efficient leaching of lithium and fluorine in the aluminum electrolysis dangerous waste materials is achieved; calcium oxide is used as a precipitating agent, free fluorine is promoted to be precipitated and recycled as calcium fluoride, the whole process meets the requirement of green metallurgy, and the win-win situation of resources and the environment is achieved.

The invention relates to the technical field of aluminum electrolytic capacitors, in particular to an anode foil production device and method for an aluminum electrolytic capacitor. Comprising a foundation assembly, the foundation assembly comprises a base, a portal frame is installed on the top of the base, and a hollow conveying belt is installed in the base; a drying assembly is installed in the portal frame and comprises an upper drying bin fixedly connected into the portal frame, and an upper drying rod is arranged at the bottom of the upper drying bin. A lower drying bin is fixedly connected into the base and located in the middle of the hollowed-out conveying belt, and a lower drying opening is formed in the upper portion of the lower drying bin. Aiming at the defects in the prior art, the invention provides the anode foil production device and method for the aluminum electrolytic capacitor, which can effectively solve the problems of anode foil deformation and surface damage caused by overlarge airflow impact during drying and material performance change caused by local high temperature in the prior art.

The invention provides a sorting method for aluminum electrolysis anode scrap fine particles, and belongs to the field of solid waste treatment. The method comprises the steps that the aluminum electrolysis anode scrap fine particulate matter is subjected to first-stage screening classification, and first-stage oversize products and first-stage undersize products are obtained; the first-section oversize product is subjected to first dense medium cyclone separation, and first gravity separation refined carbon and first gravity separation tailings are obtained; the first-section screen underflow is subjected to first spiral chute separation, and first refined carbon and first tailings are obtained; the first gravity separation tailings are subjected to second dense medium cyclone separation, and second gravity separation cryolite concentrate and second gravity separation tailings are obtained; the first tailings are subjected to second spiral chute separation, and second cryolite concentrate and second tailings are obtained; and the first gravity concentration refined carbon and the first refined carbon are combined to obtain refined carbon, and the second gravity concentration cryolite concentrate and the second cryolite concentrate are combined to obtain cryolite concentrate. According to the method, a reselection process more adaptive to the physical property of the anode scrap is introduced, and efficient separation of carbon-ash and cryolite-ash is achieved through the material density difference.

The invention provides a non-ferrous metal recovery method and an aluminum electrolyte carbon residue comprehensive utilization process, and relates to the technical field of metal recovery and utilization. A non-ferrous metal recycling method comprises the following steps that S1, pretreatment of raw materials is conducted, specifically, aluminum electrolyte is crushed and screened through a crusher to prepare carbon residue powder, the carbon residue powder and an alkaline compound are mixed according to the mass ratio and then put into a muffle furnace to be roasted, fluoride is converted into calcium fluoride, cyanide is converted into calcium cyanate, and roasted residues are generated; and S2, leaching treatment is conducted, specifically, the roasting slag in the step S1 is put into a constant-temperature water bath pot through a sulfuric acid solution to be leached. According to the scheme, enrichment of valuable metals such as aluminum and lithium can be finally achieved by leaching the roasting slag through sulfuric acid, impurities such as iron and aluminum are accurately separated from the leachate through a fractional precipitation method, calcium ions are selectively precipitated through oxalic acid, a high-purity lithium solution is finally obtained, a battery-grade lithium carbonate product is prepared after lithium precipitation, effective recovery and utilization of non-ferrous metals are achieved, and the method is suitable for industrial production. The energy is saved.

The invention relates to the field of aluminum electrolysis industrial solid waste resource recycling, in particular to a method for preparing regenerated aluminum fluoride from aluminum electrolysis fluorine-containing solid waste. The method comprises the following steps: crushing and grinding the fluorine-containing solid waste, and mixing the crushed and ground fluorine-containing solid waste with anhydrous aluminum sulfate, aluminum fluoride seed crystals and a carbonaceous additive; carrying out heating reaction on the mixture at 500-700 DEG C, washing with water, and filtering; and drying the filter cake to obtain a regenerated aluminum fluoride product. According to the method, the aluminum fluoride seed crystal is introduced to promote reaction conversion, the calcium sulfate byproduct is subjected to in-situ reduction removal by using the carbon additive, and the sodium is deeply removed through heat treatment and high-temperature distillation, so that the obtained regenerated aluminum fluoride product is high in purity and low in sodium and sulfur content, and can be directly reused in an electrolytic cell. According to the technical scheme, high-value utilization of the aluminum electrolysis fluorine-containing solid waste is achieved, and environmental and economic benefits are achieved.

The aluminum electrolysis emergency air pick tool car comprises two car body supports, the two car body supports are horizontally arranged, a plurality of partition plates are evenly and fixedly connected between the two car body supports, one end of each car body support is fixedly connected with a handrail, the other end of each car body support is fixedly provided with a bottom plate, and the bottom plate is vertically arranged. The surface of the spacing plate is fixedly connected with a main placing rod; wheels are installed on the bottom face of the vehicle body support and connected through connecting rods. The main placing rod comprises two vertical placing rods and a horizontal placing rod, the two vertical placing rods are fixedly mounted on the surface of the spacing plate, and the horizontal placing rod is fixedly connected between the ends of the two vertical placing rods. The utility model has the beneficial effects of safe and reliable operation, stable loading, wide environment adaptation range and high transportation operation efficiency, can quickly reach the site of the maintenance working condition, shortens the maintenance time, and ensures the effective treatment of emergencies in the production process and the continuous operation of safe production.

The utility model relates to aluminum electrolysis technical field, especially a kind of aluminum electrolysis anode assembly assembly and disassembly alignment device, including anode guide rod, support frame and several groups of alignment assembly, alignment assembly includes limiting piece and barrier, limiting piece is slidably connected on support frame, barrier is slidably connected on support frame, barrier and limiting piece slide towards opposite direction, anode guide rod is arranged between limiting piece and barrier, barrier and limiting piece are respectively abutted on both sides of anode guide rod, so that anode guide rod is perpendicular to ground surface.In the utility model, alignment assembly makes anode guide rod be connected with catenary conveyor easily, connect in vertical state, reduce the connection difficulty of both, also avoid residual anode to occur in the process of transportation Inclination, strengthen transportation quality.

The application provides an energy-saving building material production equipment and an aluminum electrolysis overhaul slag recycling method. The application relates to the field of energy-saving building material production equipment, and the energy-saving building material production equipment comprises a base. The energy-saving building material production equipment provided by the application inputs roasting gas into a drying outer cylinder, drives a drying inner cylinder to rotate and tumble filter residue A through a drying motor, and performs drying, so that energy is effectively saved. The filter residue A after drying is input into a crushing box through a lifting conveyor belt, is crushed by crushing cutters, is sieved, is input into a mixing box through a discharge hopper, is mixed with mixed material, cement and lime to obtain the mixed material, the mixed material is pressed into no-burning bricks by pressing the mixed material into the first mold through an upper pressing die head and a lower pressing die head, meanwhile, the second mold synchronously completes filling to realize continuous production, the filter residue A is converted into the no-burning bricks, waste resource utilization is realized, and environmental pollution is reduced. The double molds work alternately, production is ensured to be uninterrupted, and overall productivity and economic benefits are improved.

The invention provides a process for preparing cement from aluminum electrolysis overhaul residues and waste anti-seepage material lithium extraction residues, and relates to the technical field of solid waste co-treatment and resource utilization, and the process comprises the following steps: mixing pretreatment: crushing and grinding mixed raw materials, adding a calcium-based fluorine fixing agent, and roasting to decompose cyanide and stabilize fluoride; preparing a cement raw material: mixing the mixed residues with other raw materials according to a certain ratio, adjusting the ratio value, and grinding to prepare the cement raw material; calcining the clinker, namely calcining the raw material at high temperature, treating flue gas, and quickly cooling to obtain the cement clinker; according to the invention, a carbonaceous material in the overhaul slag is utilized to provide part of heat, so that the energy consumption is reduced; fluorides in the two wastes react with each other to generate a more stable compound, so that the fluorine curing efficiency is improved, and the environmental risk is thoroughly eliminated; heavy metal is further solidified in a cement kiln high-temperature environment, harmless treatment is achieved, the resource utilization rate is increased, and product performance is reliable.

The invention discloses equipment for replacing an aluminum electrolysis anode, and relates to the technical field of aluminum electrolysis anoders.The equipment comprises a main body rod, the lower end of the main body rod is provided with a bottom rod used for being attached to the bottom palm of a new electrode through a folding assembly, and a positioning sleeve rod is rotationally installed in the middle of the front end face of the main body rod; a movable sleeve rod is arranged at the front end of the positioning sleeve rod through a length adjusting assembly, and a connecting base is fixedly installed at the front end of the movable sleeve rod. The device is compact in overall structural design, all the components can be folded or unfolded on the main body rod, and therefore when the device is not used, the occupied space of the device can be reduced through folding, and carrying and storage are convenient. The device is in a fixed state during measurement and line drawing, too large errors caused by factors such as manual shaking are not prone to being caused, the line drawing accuracy and the measurement precision can be guaranteed, in the operation process, an operator does not need to hold the device to be close to the bottom palm for a long time, and overall operation is more convenient and saves labor.

The utility model relates to the technical field of aluminum electrolysis, and discloses an aluminum electrolysis cell safety crust breaking device which comprises a mounting plate serving as a bearing structure, lifting rods are arranged in the middles of the left end and the right end of the mounting plate in a penetrating mode, the lower ends of the lifting rods are connected with connecting rods through buffering structures, and threaded columns are fixedly connected to the bottoms of the connecting rods. Hammer heads are in threaded connection with the outer parts of the threaded columns; the side plates serve as connecting mechanisms, the bottom ends of the side plates are fixedly connected to the upper side of the mounting plate, and rotating shafts are rotationally connected to the upper ends of the side plates. According to the utility model, the lifting rod is pushed to reciprocate up and down, the connecting rod and the hammerhead are driven to move, crust breaking operation is carried out on the aluminum electrolysis cell, traditional cylinder transmission is replaced, cylinder stability reduction caused by high temperature is avoided, the safety of the device is improved, the positions of the first threaded block and the first shaft rod are adjusted, and the moving range of the lifting rod is adjusted; and adjusting according to requirements.

The invention relates to the technical field of crushing devices, and particularly discloses an aluminum electrolysis electrode heat preservation material circulating crushing system which comprises a first supporting plate, a second supporting plate, a third supporting plate and a fourth supporting plate which are sequentially arranged from bottom to top, an elevator arranged on the first supporting plate and a crusher arranged on the second supporting plate. The feeding device is arranged on the third supporting plate, the screening device is connected with a discharging opening of the elevator, the storage device is connected with the screening device, and the conveying device is arranged on the fourth supporting plate; the discharging end of the feeding device is connected with a feeding port of the pulverizer, the discharging end of the pulverizer is connected with the feeding end of the elevator, and the discharging end of the feeding device and the discharging end of the screening device are connected with the feeding end of the feeding device at the same time. According to the circulating crushing system for the on-pole heat preservation material for aluminum electrolysis, unqualified powder can be efficiently and automatically crushed again.

The invention provides an automatic sample feeding trolley for an aluminum electrolysis workshop, and relates to the technical field of sample transportation and storage devices. The automatic sample feeding trolley comprises a movable chassis, a controller and a cabinet body fixed to the chassis, navigation lenses are arranged on the outer side wall of the cabinet body at intervals, and an antenna used for receiving and transmitting signals and a radar used for obstacle avoidance detection are installed at the top of the cabinet body; an entrance guard detector and an automatic door opening assembly are arranged on the front side of the cabinet body, and the automatic door opening assembly is used for opening or closing the cabinet body according to a detection result of the entrance guard detector; a specified placement area is reserved in the cabinet body and is used for storing a drawable sample box, and the sample box is used for storing a to-be-tested sample; a cabinet body detection switch is arranged on the outer side of a specified placement area in the cabinet body and is used for detecting whether a sample box is placed in the specified placement area or not; and a box body detection switch electrically connected with the controller is arranged at the position, corresponding to the edge of the front end of the sample box, in the cabinet body and is used for detecting whether the sample box is pulled in place or not.

The invention discloses an aluminum electrolysis air compression station energy consumption optimization method based on load prediction and dynamic pressure regulation, relates to the technical field of air compression station operation optimization, and greatly reduces the fluctuation range of air supply pressure by accurately matching supply and demand through a refined control process, dynamic pressure regulation based on load prediction and smooth regulation of a frequency converter. Afterwards, a frequency conversion speed regulation mode replaces traditional frequent start and stop control, large current impact and mechanical abrasion caused by repeated start and stop of the motor are avoided, and maintenance cost and energy consumption caused by the large current impact and the mechanical abrasion are reduced. And meanwhile, the gas consumption load is accurately predicted through the LSTM model, an optimal operation strategy is planned in advance, and excessive or insufficient gas supply is avoided. And finally, through prediction of the load of the whole system and dynamic setting of the pressure, a decision basis is provided for collaborative scheduling of the air compressors, so that the comprehensive energy efficiency of the system is greatly improved, and the problems that in a traditional method, all units operate independently, and the efficiency is low are solved.

The application discloses an aluminum electrolysis carbon anode anti-oxidation anticorrosion coating and a preparation method thereof. The coating comprises the following components in percentage by mass: a main component 30-40%, a secondary component 15-25%, a binder 10-15%, an anticorrosion additive 15-25%, and the balance is water. The main component comprises white corundum powder, red corundum powder and microcrystalline corundum powder. The secondary component comprises secondary component 1 and secondary component 2. The secondary component 1 comprises phlogopite, biotite and sodium mica. The secondary component 2 comprises potassium feldspar, sodium feldspar and calcium feldspar. The binder is sodium water glass and potassium water glass. The aluminum electrolysis carbon anode anti-oxidation anticorrosion coating is simple and convenient to prepare. After being coated on the carbon anode, the carbon anode in operation can be well protected. The weight loss rate of each sample is only about 0.8%, and the problems of anode oxidation and coating corrosion are effectively reduced.

The utility model relates to aluminum electrolysis technical field, especially a kind of aluminium electrolysis cell crust breaking device, including crust breaking cylinder, support and dust suction component, crust breaking cylinder is set in the outside of support, support inside is provided with driving element, driving element and crust breaking cylinder are connected, dust suction component includes dust suction element, dust suction element is detachably set in the side of support, and dust suction element includes dust suction structure, dust suction pipe and dust outlet pipe, dust suction pipe is aligned with the setting of passing through support and driving element, dust outlet pipe is set at the position of the opposite side of dust suction pipe, dust suction structure can rotate, so that the dust in the inside of support is sucked out by dust suction pipe.In the utility model, baffle can be in crust breaking cylinder work time and prevent a large amount of dust from entering the inside of support by blocking a large amount of dust, open motor so that fan blade rotates, dust accumulated in the inside of support is sucked out by dust suction pipe, avoid dust accumulation in the inside of support to further influence the normal work of driving element, greatly increase the efficiency of crust breaking.

The invention relates to an anti-impact test device for a capacitor. The anti-impact test device comprises a cabinet and a capacitor body, the device is characterized in that the cabinet is composed of an anti-collision protection cabinet and a control cabinet; an impact simulation mechanism is arranged in the impact protection cabinet; the impact simulation mechanism is provided with a rotating shaft; a rotating force arm is arranged on the periphery of the rotating shaft; an impact chuck is arranged at the end part of one side of the rotating force arm; a sample for an impact test is mounted in the impact chuck; and an impact mechanism colliding with the impact chuck is arranged on the track of the impact chuck doing circular motion around the rotating shaft. Through data analysis, the impact resistance of the test sample is known, reliable verification data is provided for research and development of the shock resistance of the capacitor and evaluation of the product performance, the research and development period of the product is shortened, and the stability of the product is improved. The problem that in the prior art, aluminum electrolytic capacitor anti-seismic test conditions and data acquisition have large limitation and inaccuracy is solved.

The invention relates to an aluminum electrolytic capacitor module, which comprises a plurality of aluminum electrolytic capacitor monomers without insulating sleeves, a trapezoidal cubic metal heat conduction component and a ship-shaped open insulating shell, the capacitor monomers are arranged in a single row and in a straight line in the holes of the metal heat-conducting member to form a radial trapezoidal combined structure body of the capacitor; the structural body is put into a ship-shaped open insulating shell for half-surrounded insulating protection; and an exposed structural body plane parallel to the axial direction of the capacitor is a heat dissipation mounting surface. The technical scheme can adapt to the change of the requirement of a user for the electrostatic capacity of the capacitor module, can adapt to the installation of different heat dissipation devices, and can make a proper three-dimensional size design through vertical and horizontal installation on a circuit board, and especially, the change is realized under the manufacturing of one set of mold, so that a large amount of mold cost is saved.

The invention provides an aluminum electrolysis flue gas treatment and recovery method based on microalgae staged culture, and belongs to the field of biological purification and recycling of industrial flue gas. The method comprises the following steps: pretreating the aluminum electrolysis flue gas to obtain purified flue gas; introducing the purified flue gas into a photobioreactor inoculated with fluorine-resistant microalgae, and carrying out I-stage tolerance period culture to obtain an algae solution; transferring the algae liquid into a photobioreactor, adding CaCl2 into the algae liquid and limiting the supply of a nitrogen source, and introducing purified flue gas into a second photobioreactor to carry out II-stage accumulation period culture, so as to obtain algae slurry; carrying out solid-liquid separation on the algae slurry to obtain algae mud and algae-containing filtrate; the algae mud is subjected to wall breaking treatment and supercritical extraction, and algae oil and algae residues are obtained. According to the application, the pollutant tolerance mechanism and the product synthesis path of the microalgae are triggered by regulating and controlling environmental factors, so that efficient purification of flue gas, fixation of fluorine in the form of biominerals, step-by-step extraction of high-value products from algae and cyclic utilization of algae residues can be synchronously realized.

The present application relates to waste residue recycling, and provides a system for extracting valuable lithium elements from aluminum electrolysis solid waste water treatment residue, which comprises a ball milling system, a slurry preparation system, an alkali leaching system, an acid leaching system, a fluoride salt directional conversion system, a impurity removal system and a post-treatment system connected in sequence; the alkali leaching system is connected with the fluoride salt directional conversion system. The system for extracting valuable lithium elements from aluminum electrolysis solid waste water treatment residue can efficiently extract valuable lithium elements in the water treatment residue, and significantly improves the economic benefits of harmless disposal and comprehensive utilization of aluminum electrolysis overhaul residue and carbon residue.

The invention relates to a full-automatic aluminum electrolytic capacitor assembling machine which comprises a machine frame, a rotating disc device, a colloidal particle feeding device, an element feeding device, a detection device, a transfer device, a liquid injection device, an aluminum shell feeding device, a packing paper device, a girdling device and a discharging guide groove. The element feeding device installs elements on colloidal particles located on the clamp, the detection device detects products located on the clamp, the aluminum shell feeding device feeds aluminum shells to the girdling device, the packing paper device places packing paper on the aluminum shells, the transferring device installs the products on the aluminum shells, and the liquid injection device injects electrolyte into the aluminum shells. The edge of the aluminum shell of the girdling device is girdled and fixed. According to the full-automatic aluminum electrolytic capacitor assembling machine, the aluminum electrolytic capacitor can be automatically assembled and formed by adopting the device, the structure is simple and convenient, and rapid assembling of the aluminum electrolytic capacitor is realized, so that the production efficiency of the aluminum electrolytic capacitor is improved.

The invention discloses an anti-splashing spring hook for the aluminum electrolysis industry. The anti-splashing spring hook comprises a sleeve, an elastic piece, a transmission piece, a hook claw and an operation part. The sleeve is of a hollow structure and used for forming a closed containing cavity. The elastic piece is arranged in the containing cavity and used for providing elastic force needed by locking. The transmission part is arranged in the containing cavity, abuts against the elastic part and is used for transmitting elastic force. The transmission piece penetrates through the sleeve and then is in transmission connection with the hook claw, and the hook claw is driven through elastic force to achieve locking. The operation part is connected with the sleeve and used for driving the whole anti-splashing spring hook to move so as to achieve unlocking. The spring is completely sealed and isolated through the sleeve, clamping stagnation or failure caused by the fact that high-temperature molten aluminum splashes to adhere to the spring is avoided, the reliability of the spring hook is remarkably improved, the service life of the spring hook is remarkably prolonged, operation cost is reduced, production safety is improved, and the spring hook is simple in structure and easy to implement and popularize.

The utility model discloses fault detection equipment for an aluminum electrolysis flue gas purification device, and solves the problem of poor applicability of fault detection equipment for flue gas purification devices at different heights in the prior art. The device comprises a crawling rail arranged on the pipe wall of the exhaust pipeline, a crawling seat capable of moving up and down along the crawling rail is arranged on the crawling rail, a transmission supporting box is arranged on the crawling seat, a rotating shaft is arranged on the transmission supporting box, and a cantilever beam is arranged on the rotating shaft. And a smoke sensor and a wind power dust removal mechanism corresponding to the smoke sensor are arranged on the cantilever beam. According to the device, the crawling seat is matched with the crawling track, so that the device can freely move in the height direction of the exhaust pipe so as to adapt to exhaust ports with different heights, and the adaptability of the device is improved; and meanwhile, the equipment can flexibly move up and down through the self-crawling crawling seat, so that detection and overhaul under different height working conditions are facilitated, and the overhaul safety and timeliness are improved.

The present application belongs to the technical field of aluminum electrolysis production, and provides a phosphorus pig iron recarburization and desulfurization additive and a production process. The additive raw material comprises graphite powder, passivated magnesium, calcium oxide, silicon iron powder, manganese iron powder, phosphorus iron powder, sodium carbonate and a binder. The additive has a four-layer structure, the passivated magnesium is wrapped inside the calcium oxide, and the graphite powder wraps the calcium oxide inside. When used, the graphite powder dissolves in the phosphorus pig iron water, the calcium oxide is gradually released to perform preliminary desulfurization, and after the calcium oxide reaction is completed, the passivated magnesium wrapped inside the calcium oxide is gradually released to perform further desulfurization. This gradual release method is beneficial to promoting the reaction while avoiding the one-time reaction of the passivated magnesium to release a large amount of heat to cause disturbance of the iron water and eliminate safety hazards. The additive has moderate particle size, good absorption effect when used, and simple production process, and can effectively meet the recarburization and desulfurization needs of the phosphorus pig iron.

The invention discloses a cathode steel bar current on-line detection system and method based on thermoelectric self-power supply, and relates to the technical field of aluminum electrolysis smelting, the system comprises: a current acquisition unit arranged at two detection points on the surface of a cathode steel bar and used for acquiring a voltage drop between the two detection points to generate a voltage drop signal; the hot end of the thermoelectric power generation unit is attached to the surface of the cathode steel bar, the cold end is connected with the heat dissipation structure, and the temperature difference between the hot end and the cold end drives carriers to move directionally to generate initial electric energy; the energy management unit is used for storing the initial electric energy and boosting and converting to generate stable power supply voltage; and the signal processing and wireless transmission unit is driven by the stable power supply voltage, performs division operation on the voltage drop signal and the resistance value after temperature compensation to generate a current value, modulates the current value into a wireless signal and sends the wireless signal to a far-end receiving terminal. The waste heat of the electrolytic cell is utilized to generate power, energy self-sufficiency is achieved, data are transmitted in a wireless mode, and the problems of power supply and signal transmission in cathode steel bar current detection are fundamentally solved.

This utility model relates to the field of aluminum electrolysis technology, and particularly to a graphitized lining structure suitable for low current density aluminum electrolysis cells. It includes a cell bottom plate, a heat insulation layer, a thermal insulation layer, a seepage-proof layer, a cathode carbon block assembly, a casting layer, and a thermal insulation and seepage-proof layer. The heat insulation layer is located above the cell bottom plate, the thermal insulation layer is located above the heat insulation layer, the seepage-proof layer is located above the thermal insulation layer, the cathode carbon block assembly is located above the seepage-proof layer, the casting layer is located outside the cathode carbon block assembly, and the thermal insulation and seepage-proof layer is located outside the casting layer. In this utility model, a partition plate, a seepage-proof material layer, seepage-proof brick I, seepage-proof brick II, and a barrier plate are provided. The seepage-proof material layer, seepage-proof brick I, seepage-proof brick II, and barrier plate are sequentially distributed on the partition plate. A seepage-proof material layer is also provided above the barrier plate. The seepage-proof material layer and the barrier plate can greatly prevent electrolyte leakage into the seepage-proof layer, and the partition plate and the seepage-proof material layer can further prevent electrolyte leakage into the thermal insulation layer.

The application provides a harmless treatment device for aluminum electrolysis waste refractory material, which comprises a sodium hydroxide solution bin, an ice acetic acid storage bin, an epichlorohydrin bin, a main body reaction bin and a dodecyl triethoxysilane hydrolysis bin. The application also provides a method for harmless treatment of aluminum electrolysis waste refractory material by using the device and application in preparation of asphalt mixture. The method is that the aluminum electrolysis waste refractory material (SPL) is treated by calcium salt precipitation and then by biomaterial chitosan, then the CT-SPL is crosslinked by epichlorohydrin, and finally the lipophilicity is modified. The method gives SPL stability, excellent adhesion with asphalt, effectively controls the seepage of the toxicity of SPL itself, enables the safe application of SPL in asphalt mixture, and significantly improves the high-temperature stability and water stability of the asphalt mixture, which has significant social and environmental benefits.