240 results about "Aluminum fluoride" patented technology

The invention discloses a passive radiation refrigeration coating and a preparation method thereof, and relates to the technical field of industrial coatings. Comprising a fluoroacrylate emulsion, hollow glass beads, nano titanium dioxide, flaky silicon dioxide aerogel powder, polytetrafluoroethylene micro powder, hydroxyl-terminated polydimethylsiloxane, a hydroxyl acrylic acid modified silane coupling agent, a super-hydrophobic modified fluorosilicone surface additive, nano cerium oxide, aluminum fluoride doped zinc oxide infrared enhancement powder and deionized water. The paint is prepared on the basis of the formula. According to the invention, a multi-scale spectrum regulation and control and surface self-cleaning system is constructed cooperatively, so that the synergistic effect of high reflection of a sunlight region and high emission of a middle infrared region is realized. The coating can maintain continuous passive refrigeration in a day and night period, the surface of the coating has self-cleaning capability and excellent ultraviolet aging resistance, and high reflectivity and high radiation emissivity can be maintained for a long time in a complex outdoor environment, so that the thermal management efficiency of buildings and equipment is remarkably improved.

The invention belongs to the technical field of battery material preparation, and particularly relates to a coated negative electrode material as well as a preparation method and application thereof. The coated negative electrode material comprises a porous carbon skeleton and a carbon coating layer coating the porous carbon skeleton, the porous carbon skeleton is provided with a plurality of holes; a silicon layer and a functional layer are attached to the surfaces of part of the holes; the silicon layer comprises silicon, the functional layer comprises a functional material, and the functional material comprises lithium aluminum fluoride. The coated negative electrode material provided by the invention has the properties of low expansion, high lithium ion conduction, few byproducts and the like, and is suitable for a solid battery; the battery energy density is ensured, and the problems that an effective lithium ion path cannot be formed due to contact failure of an active substance caused by high volume expansion of a silicon-based material in the circulation process and contact failure of the active material and a solid electrolyte in a solid-state battery, and performance degradation is caused by negative electrode side polarization increase in the circulation process are solved.

The invention relates to a positive electrode material and a preparation method thereof, a positive electrode plate, a battery and an electric device. The positive electrode material comprises a positive electrode base material, a carbon coating layer and an aluminum fluoride coating layer, the positive electrode base material is coated with the carbon coating layer, and the carbon coating layer is coated with the aluminum fluoride coating layer; wherein the positive electrode base material is selected from lithium manganate; wherein the aluminum fluoride coating layer is a discontinuous coating layer. The positive electrode material has excellent high-temperature cycle performance and also has excellent rate capability and capacity.

The invention relates to the technical field of surface engineering, discloses a method and a system for preparing a yttrium fluoride composite ceramic coating through atmospheric plasma spraying, and aims to solve the problems that the yttrium fluoride coating generates a brittle aluminum fluoride layer on the surface of an aluminum substrate due to fluorine ion diffusion, so that the bonding strength is low, and the yttrium fluoride coating is easy to peel off and lose efficacy. The method comprises the following steps: sequentially carrying out mechanical polishing, ultrasonic cleaning and sand blasting roughening on an aluminum base material; preparing composite powder formed by mixing yttrium fluoride, yttrium oxide and nanometer aluminum oxide according to the mass ratio of 75: 20: 5; sequentially depositing a yttrium oxide transition layer, a composite barrier layer and a yttrium fluoride functional layer by adopting atmospheric plasma spraying; and finally carrying out vacuum post-heat treatment. According to the system, through the synergistic effect of the three layers of gradient structures, the transition layer forms an yttrium aluminate metallurgical bonding interface, the barrier layer inhibits fluorine ion diffusion through the dual mechanisms of nanometer aluminum oxide physical barrier and yttrium oxide chemical adsorption, and the functional layer guarantees the plasma erosion resistance. According to the method, the bonding strength of the coating is remarkably improved to 50 MPa or above, the porosity is lower than 3%, stripping is avoided under 500-hour high-energy plasma bombardment, the process cost is reduced by 40%, and the method is suitable for cavity protection of semiconductor etching equipment.

The invention discloses a lithium iron manganese phosphate positive electrode material and a preparation method thereof, and belongs to the technical field of lithium ion batteries, the lithium iron manganese phosphate positive electrode material at least comprises lithium iron manganese phosphate particles and a coating layer coating the lithium iron manganese phosphate particles; the raw material of the coating layer comprises an aluminum fluoride embedded poly (ethylenedioxythiophene)-lithium polystyrene sulfonate compound. And the coating layer can be used as a physical barrier to form dynamic interface protection, so that dissolution of manganese and erosion of electrolyte are directly inhibited, and side reaction between the electrolyte and the positive electrode material is reduced. Meanwhile, a more flexible transmission channel is provided for lithium ions and electrons, the conductivity of the positive electrode material is enhanced while the transmission efficiency of the lithium ions is improved, and the lithium manganese iron phosphate positive electrode material with stable structure, high rate capability and cycling stability is obtained.

The invention discloses a modified lithium-rich manganese-based positive electrode material and a preparation method thereof, a pole piece and a battery, and the preparation method comprises the following steps: S1, mixing a lithium-rich manganese-based material with tungsten trioxide, and calcining for the first time to obtain an LRM-coated WO3 material; and S2, mixing the LRM-coated WO3 material with aluminum fluoride, and carrying out secondary calcination to obtain the modified lithium-rich manganese-based positive electrode material. According to the scheme, the modified lithium-rich manganese-based positive electrode material is prepared through combination of chemical bond regulation and phase structure design, the problem that the high-temperature performance of a traditional lithium-rich manganese-based material is degraded is solved, and a new thought is provided for development of a high-energy-density lithium ion battery.

The invention discloses an atomic layer deposition method and structure for an aluminum fluoride enhanced aluminum oxide passivation layer of a TOPCon solar cell. The method comprises the steps that after a boron-doped layer is formed on the front face of a crystal silicon wafer, a passivation layer is formed on the boron-doped layer through an atomic layer deposition technology, specifically, Al2O3 deposition circulation is conducted with trimethyl aluminum as an aluminum source and H2O as an oxygen source, AlF3 deposition circulation with aluminum chloride as the aluminum source and HF or NH4F as a fluorine source is periodically inserted, the proportion of the number of deposition circulation times of AlF3 to the number of deposition circulation times of Al2O3 is 1: (1-10), and the passivation layer is formed on the boron-doped layer through the atomic layer deposition technology. And an alternating layer structure with the total thickness of 5-10 nm is formed. According to the invention, an AlF3 layer is periodically inserted in an Al2O3 deposition cycle, so that an Al2O3 / AlF3 superlattice structure is formed. According to the structure, the interface passivation effect is remarkably improved, hydrogen atom overflow is reduced, and the ultraviolet aging resistance is enhanced. The method is compatible with an existing ALD production line, is suitable for high-efficiency TOPCon battery manufacturing, and has a good industrial application prospect.

The invention provides high-transparency rare earth doped fluoride glass and a preparation method thereof, and belongs to the technical field of glass. The calcium fluoride ensures high transparency and chemical stability, the magnesium fluoride improves the ultraviolet transmittance and the mechanical strength, and the barium fluoride optimizes the melting fluidity and the rare earth doping uniformity; aluminum fluoride is added to inhibit crystallization and enhance uniformity, the rare earth element realizes optical function regulation and control, and ammonium fluoride provides a fluorine source and reduces impurities; in a preparation link, quick lime is dedusted and then reacts with pure water in proportion, impurities in a calcium nitrate solution are removed by hydrogen peroxide, uniform growth of calcium carbonate crystal nucleuses is controlled by ammonia water and carbon dioxide, and calcium fluoride is synthesized by hydrofluoric acid in proportion and dried at low temperature after plate-frame pressure filtration and purification; after the raw materials are refined through ball milling, the melting temperature is controlled in stages, impurities, reaction integrity and a microstructure are accurately controlled in the whole process, and finally the high-transparency functional glass is prepared.

The embodiment of the invention provides a friction material composition, a brake lining, a preparation method of the brake lining, a brake and a vehicle. The friction material composition comprises the following raw materials in parts by weight: 2-10 parts of a fluoride mixture, 8-15 parts of graphite, 8-12 parts of phenolic resin, 4-12 parts of a metal oxide, 15-40 parts of a fiber material and 20-40 parts of other fillers, wherein the fluoride mixture comprises at least two of calcium fluoride, barium fluoride, cerium fluoride, aluminum fluoride, magnesium fluoride, potassium fluoride, sodium fluoride, beryllium fluoride and manganese fluoride. The brake lining prepared from the friction material composition can solve the problems of high wear rate and heat fading at the same time, the service life of the brake lining is prolonged, and the braking effect is improved.

The invention discloses a flame-retardant polyvinyl chloride composite board and a processing method thereof, and relates to the technical field of polyvinyl chloride boards. The flame-retardant polyvinyl chloride board is prepared by adding a mullite whisker-metal organic framework composite material into a composite board matrix. Firstly, aluminum oxide, silicon dioxide and aluminum fluoride trihydrate are used for preparing mullite whiskers, and the mullite whiskers are single-crystal fibrous materials with many pores, large specific surface area, high temperature resistance and high strength. Preparing sol by using the mung bean polypeptide, and modifying the mullite whisker by using the sol to obtain the mullite whisker modified by the mung bean polypeptide. Zinc nitrate hexahydrate and dimethylimidazole are added to assist growth of a metal organic framework composite material on mullite whiskers, so that the strength and flame retardance of the flame-retardant polyvinyl chloride composite board are further improved.

The aluminum fluoride coated nano silicon material is prepared from nano silicon powder, aluminum nitrate nonahydrate, ammonium fluoride, absolute ethyl alcohol and deionized water, and an aluminum fluoride coating layer and a nano silicon negative electrode material are compounded to form an aluminum fluoride coated nano silicon material structure. The aluminum fluoride coating layer on the surface can be converted into a fast ion conductor in the battery circulation process, so that the lithium ion diffusion rate is increased, and migration of lithium ions between the nanometer silicon negative electrode and the electrolyte is promoted. Under the coating protection effect of the coating layer, the volume expansion of the nano-silicon material is improved, the voltage attenuation speed is slowed down, the cycling stability is greatly improved, the cycling performance of the nano-silicon negative electrode material is improved, and silicon particle breakage, material pulverization and falling off from a pole piece are avoided. The coating amount of the aluminum fluoride coating layer is compared, and the optimal coating amount is given. The method has the advantages of low cost and high controllability.

The present invention provides a method for preparing large-sized aluminum fluoride products from aluminum electrolyte leaching solution, belonging to the technical field of aluminum electrolyte resource recovery. S1: Take the aluminum electrolyte leaching solution, and the molar ratio of F element to Al element in the aluminum electrolyte leaching solution is 1-2.5:1; S2: Heat the aluminum electrolyte leaching solution and add an alkali solution. When hydroxyaluminum fluoride precipitates in the aluminum electrolyte leaching solution, add crystal seeds and an organic surfactant, and continue to add the alkali solution to adjust the pH value to 2-7; stir and age, and then filter to obtain a filter cake and a filtrate; S3: Dry the filter cake, add ammonium bifluoride, mix well and then calcine to obtain aluminum fluoride products. The present invention provides a method for preparing large-sized aluminum fluoride products from aluminum electrolyte leaching solution, which solves the technical problems of too fine particle size and low purity of aluminum fluoride products in the prior art.

The invention discloses an electrolytic bath crust breaking and blanking control, fault detection alarm and intervention method, which comprises an electrolytic bath control machine, the electrolytic bath control machine is connected with a plurality of electrolytic baths, and an intelligent control system is connected in series between the electrolytic bath control machine and the electrolytic baths. And the intelligent control system comprises a shell surface pressing and penetrating control module, a shell surface pressing and non-penetrating control module in an abnormal state, a blanking system control module, a fault detection module, an execution intervention module and a process data acquisition and storage module. And invalid blanking and energy waste are remarkably reduced, meanwhile, the risks of covering material accumulation and hearth sediment are reduced, and the electrolytic reaction stability is improved. Manual inspection and abnormal working condition operation risks are reduced, potential safety hazards in high-temperature, strong-corrosion and strong-magnetic-field environments are reduced, the maintenance time is shortened through fault early warning, and the equipment reliability is improved.

The invention discloses a process method for preparing aluminum fluoride by recovering electrolytic aluminum electrolyte, and relates to the technical field of waste material recovery. The invention relates to a process method for preparing aluminum fluoride by recovering electrolytic aluminum electrolyte. The preparation method comprises the following steps: firstly, grinding the carbon residue or electrolyte into powder, wherein the fineness is greater than 150 meshes; adding water into the powder, pulping, and adding a certain amount of aluminum sulfate or aluminum hydroxide; sulfuric acid is added for leaching under the stirring condition, the leaching temperature ranges from 70 DEG C to 100 DEG C, the leaching time ranges from 2 h to 5 h, and the pH of the leaching end point ranges from 1 to 2; adding water to dilute the filtrate, adding caustic soda flakes to adjust the pH value to 12-14 to remove impurities, and filtering out insoluble hydroxides to obtain a mixed salt solution of sodium fluoride and sodium metaaluminate; adding sulfuric acid into the mixed salt solution while stirring to adjust the pH value to 3-6, and reacting at the temperature of 60-100 DEG C for 2-5 hours to obtain aluminum fluoride slurry; and filtering and washing the slurry to obtain aluminum fluoride trihydrate, and calcining at 500-700 DEG C to obtain anhydrous aluminum fluoride with the purity of more than 95%. The method turns waste into wealth, recycles resources, and is short in process flow, low in cost and high in recovery rate.

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 invention discloses a magnesium alloy micro-arc oxidation electrolyte which comprises sodium metaaluminate, sodium hydroxide, sodium fluoroaluminate, aluminum fluoride and glycerol. The content of sodium metaaluminate is 5-25 g / L, the content of sodium hydroxide is 1-3 g / L, the content of sodium fluoroaluminate is 0.3-0.7 g / L, the content of aluminum fluoride is 0.2-0.3 g / L, and the content of glycerol is 1 g / L. The magnesium alloy micro-arc oxidation electrolyte comprises potassium metaaluminate, potassium hydroxide, potassium fluoroaluminate, aluminum fluoride and glycerol, the content of potassium metaaluminate is 10-20 g / L, the content of potassium hydroxide is 3-5 g / L, the content of potassium fluoroaluminate is 0.5-0.7 g / L, the content of aluminum fluoride is 0.3-0.5 g / L, and the content of glycerol is 1 g / L. The invention further discloses the magnesium alloy hard ceramic membrane and a preparation method thereof. According to the preparation method of the magnesium alloy hard ceramic film, the components and the microstructure of the magnesium alloy micro-arc oxidation film layer are changed, and meanwhile the hardness and the corrosion resistance of the magnesium alloy micro-arc oxidation film layer are improved.

The application provides a tantalum-based alloy and a preparation method thereof. The preparation method of the tantalum-based alloy comprises the following steps: sequentially laying a first mixed material, a second mixed material and magnesium chips in a reaction crucible in a top-down direction, igniting the reaction crucible to generate an aluminothermic reduction reaction, and then sequentially performing a temperature reduction treatment and a surface finishing treatment to obtain the tantalum-based alloy. The first mixed material comprises aluminum particles, tantalum pentoxide, titanium oxide, potassium chlorate and aluminum fluoride. The second mixed material comprises aluminum particles, tantalum pentoxide, titanium oxide, potassium chlorate, aluminum fluoride and calcium fluoride. By adopting double dosing and covering the magnesium chips with the upper material, the application improves the ignition efficiency, significantly improves the material loss caused by the slow ignition speed and insufficient ignition of the material in the traditional off-oven method, and introduces a titanium source to form an AlTaTi compound, thereby significantly enhancing the alloy uniformity.

The utility model discloses an aluminum fluoride crystal growing device which comprises a crystallizing tank and a stirring part, the stirring part is arranged in the crystallizing tank and provided with a rotating shaft rotationally arranged in the crystallizing tank, a fixed transmission rod is rotationally arranged in the rotating shaft, a supporting frame is fixedly arranged at the top of the crystallizing tank, and the supporting frame is fixedly connected with the crystallizing tank. The bottom of the supporting frame is fixedly connected with the top of the fixed transmission rod, a plurality of stirring rods are rotationally arranged on the outer side of the rotating shaft and meshed with the fixed transmission rod, and the rotating shaft rotates to drive the stirring rods to revolve around the fixed transmission rod so as to drive the stirring rods to rotate. By arranging the crystallizing tank and the stirring part, when aluminum fluoride mother liquor is stirred, the stirring rod rotationally arranged on the side surface of the rotating shaft is driven to revolve around the fixed transmission rod through the rotation of the rotating shaft, so that the fixed transmission rod drives the stirring rod to rotate, and a plurality of stirring centers are formed in the crystallizing tank; and the efficiency of separating out aluminum fluoride crystals from the aluminum fluoride mother liquor is improved.

This invention provides a high-selectivity dry etching method for surface convergence before p-GaN regrowth, comprising: etching the surface of the p-GaN layer or GaN layer of a GaN / AlGaN heterojunction in a Cl-based gas atmosphere to remove the native oxide layer and contaminants; introducing a mixture of BCl3 and fluorine-containing gas into a reaction chamber under inductively coupled plasma conditions, and maintaining the self-bias voltage within a first preset range for etching to selectively remove the p-GaN layer or GaN layer and achieve near-stop etching in the AlGaN layer, wherein the fluorine-containing gas is used to form an aluminum fluoride layer on the surface of the AlGaN layer to inhibit etching; and reducing the self-bias voltage from the first preset range to a second preset range and / or reducing the proportion of fluorine-containing gas in the mixed gas under plasma conditions to perform convergence treatment on the surface of the near-stop etched structure. This improves the repeatability of the process window and the adaptability of the regeneration length.

The invention belongs to the technical field of chemical product preparation, and particularly relates to a method for efficiently separating and purifying aluminum fluoride silicon slag and preparing white carbon black. Dropwise adding the ammonium fluoride solution into the aluminum fluoride silicon slag solution, then heating and stirring, then adding melamine and formaldehyde as dispersing agents, filtering after the reaction is finished, and filtering by adopting a carbon fiber membrane to obtain a filter cake which is high-purity aluminum fluoride and a filtrate which is an ammonium fluosilicate solution for later use; then slowly dripping the ammonium fluosilicate solution into the ammonia water solution, and maintaining the pH value of the reaction solution at 9.3-9.4; and after the reaction is finished, carrying out solid-liquid separation and drying to obtain the white carbon black. When the white carbon black is prepared, ammonia water is selected as a base solution, the white carbon black is ensured to be separated out under an alkaline condition, the purity of the prepared white carbon black is 99% or above, the specific surface area is larger than 300 m / g, the oil absorption value exceeds 250 mL / 100 g, and the fluorine ion concentration is lower than 50 ppm. The silicon slag used in the invention is derived from solid waste of aluminum fluoride prepared from fluosilicic acid, the cost is low, and the whole process is environment-friendly and is suitable for industrial-scale production and application.

The utility model belongs to the technical field of aluminum fluoride production, and particularly relates to aluminum fluoride particle size distribution control equipment which comprises a reaction kettle and a cooling structure, the reaction kettle comprises an inner layer and an outer layer, the inner layer is fixedly arranged in the outer layer, protruding parts distributed at equal intervals are arranged on the side wall of the inner layer from top to bottom, and the cooling structure is arranged on the inner layer. A concave part is arranged between every two adjacent protruding parts, a cooling structure is arranged on the outer wall of the outer layer, supporting columns distributed at equal intervals are fixedly connected to the bottom end of the outer layer, a stirring structure used for stirring is arranged in the inner layer, a baffle ring is arranged in the middle of each concave part, and the outer wall of each baffle ring is fixedly connected with the inner wall of the outer layer. According to the utility model, the cooling liquid is introduced into the outer layer through the cooling structure to cool the reaction solution, and the inner layer is provided with the plurality of concave parts, so that the area of the inner wall of the inner layer is increased, the contact area of the reaction solution and the inner layer can be increased, and the cooling effect of the solution is improved.

The invention relates to the technical field of sodium ion batteries, in particular to an electrolyte and a sodium ion battery. The electrolyte comprises a sodium salt, an organic solvent and an inorganic aluminum salt additive, the inorganic aluminum salt additive comprises any one or more of aluminum trifluoromethanesulfonate, aluminum bis (fluorosulfonyl) imide, aluminum bis (fluorosulfonyl) imide, aluminum fluoride and aluminum chloride; the organic solvent comprises a carbonic ester solvent. The inorganic aluminum salt additive is introduced into the electrolyte provided by the invention, so that a uniform solid electrolyte interface (SEI) film containing Al2O3 / Al can be generated on a negative electrode, sodium ion transfer impedance is effectively reduced, and rate capability and cycle performance of the sodium ion battery are remarkably improved.

The utility model relates to the technical field of conveying mechanisms, in particular to an aluminum fluoride conveying mechanism which comprises a conveying cylinder, a rotating pipe is rotationally connected to the side face of the inner wall of the conveying cylinder, an auger blade is fixedly connected to the outer side of the rotating pipe, the inner side of the auger blade is hollow, the rotating pipe penetrates through the conveying cylinder, and the conveying cylinder is fixedly connected with the rotating pipe. An internal cooling assembly is arranged on the outer side of the conveying cylinder; the internal cooling assembly comprises a first circulating cooling pump fixedly connected with the outer side of the conveying cylinder, and the output end of the first circulating cooling pump is fixedly connected with a first liquid conveying pipe. According to the raw material cooling device, due to the fact that the internal cooling assembly is arranged, raw materials can be conveniently cooled from the inside in the raw material conveying process, the contact area of the auger blades and the raw materials is increased in the rotating process, the cooling efficiency is improved, due to the fact that the threaded cooling holes are formed, the raw materials can be cooled from the outside, and the cooling efficiency is improved. And the cooling effect of the raw materials is better.

The utility model discloses a purification device for anhydrous aluminum fluoride production, which relates to the technical field of anhydrous aluminum fluoride production and comprises a reaction kettle, a sliding chute is rotatably mounted in the reaction kettle, a sliding block is slidably mounted in the sliding chute, a stirring rod is rotatably inserted in the sliding block, and a second gear is fixedly mounted in the middle of the stirring rod. The reaction kettle comprises a reaction kettle body and a stirring rod, a sliding groove is formed in the reaction kettle body, a toothed plate is fixedly installed on one side of the interior of the sliding groove, a worm gear is fixedly installed at the top end of the sliding groove, a worm is rotatably installed in the reaction kettle body and meshed with the worm gear, and a forward and reverse motor is fixedly installed on one side of the reaction kettle body. Meanwhile, the sliding block drives the stirring rod to ascend and descend in the sliding groove, and a second gear in the middle of the stirring rod is meshed with a toothed plate in the sliding groove to drive the stirring rod to rotate, so that materials in the reaction kettle can be fully mixed and stirred by the stirring rod, and the materials are thoroughly contacted and fully react.

The present application relates to a method for reducing the content of sulfur in aluminum fluoride, which comprises the following steps: uniformly mixing crude aluminum fluoride powder containing sulfate impurities with ammonium hydrogen fluoride powder to obtain a mixture; placing the mixture in a reactor and performing programmed temperature calcination under a protective atmosphere; discharging the sulfur and fluorine-containing volatile gas generated by calcination after treatment by an absorption system; cooling the calcined material to room temperature; washing the cooled material with water or blowing inert gas to remove residual ammonium salt or dust, and then drying to obtain a low-sulfur aluminum fluoride product. The in-situ HF generated by the decomposition of NH4HF2 is used for gas-solid reaction, which can effectively attack and convert stable sulfate impurities existing in various forms, has high desulfurization efficiency and is deep and thorough; the reaction conditions are mild, the main phase of the product is stable, the process flow is simple, and the energy consumption is low.

The invention provides an electrochemical fluorinated membrane and a preparation method and application thereof, specifically, the component of the electrochemical fluorinated membrane is aluminum fluoride, and all the aluminum fluoride in the electrochemical fluorinated membrane is of a body-centered cubic structure. In the preparation process of the electrochemical fluorinated membrane, the surface temperature of the aluminum alloy is close to 3400-3600 K, and the prepared electrochemical fluorinated membrane is glazed at the high temperature, so that the prepared electrochemical fluorinated membrane is more uniform. The electrochemical fluorinated membrane is uniform, compact and good in appearance. The aluminum alloy containing the electrochemical fluorinated film on the surface can improve the color difference yield of the appearance and reduce the cleaning cost. The aluminum alloy containing the electrochemical fluorinated film on the surface can improve the corrosion resistance of halogen elements. The aluminum alloy containing the electrochemical fluorinated film on the surface can improve the breakdown voltage resistance.

The utility model discloses a full-automatic warehousing device for aluminum fluoride products, which comprises a conveying device, two ends of the top of the conveying device are oppositely provided with bases, a second bevel gear rotates to drive a sleeve to rotate in a fixed frame, and the inner side wall of the sleeve rotates along the outside of a threaded rod when the sleeve rotates, so that the sleeve can enter the fixed frame. A supporting plate is driven by a threaded rod to perform lifting adjustment, so that the distance between a scanner body and a conveying device is conveniently adjusted, aluminum fluoride product packaging boxes of different sizes are conveniently scanned and put in storage, an electric telescopic rod extends to drive a cylindrical block to slide on the inner side wall of a limiting groove, and a pulley rotates in a sliding groove, so that the conveying device is convenient to use. Therefore, the end, away from the two fixing blocks, of the adjusting plate descends and inclines, the inclination angle of the scanner body can be adjusted conveniently, and the problem that scanning fails due to the fact that the distance between the scanner body and the packaging box is too long or scanning fails due to the fact that the angle is not right when a special-shaped packaging box is scanned is solved.

The invention belongs to the technical field of aluminum smelting solid hazardous waste recycling, and particularly relates to a recycling method of aluminum oxide-rich complex electrolyte hazardous waste. According to the method, the complex aluminum electrolyte hazardous waste, aluminum salt and silicon-containing oxide are mixed and then subjected to segmented roasting-leaching treatment, fluorine in the electrolyte is converted into aluminum fluoride firstly and then converted into silicon tetrafluoride gas, separation of fluorine and aluminum and separation of gas and solid are achieved, and sodium and lithium elements are converted into soluble salt and further separated and recycled. According to the process, collaborative recovery and high-value utilization of various valuable elements in the complex aluminum electrolyte hazardous waste are achieved. The whole technological process is environment-friendly, toxic and harmful gas emission is avoided, secondary solid waste residues are not generated, the method has the advantages of being simple in process, high in recovery rate, high in product additional value and the like, and a feasible technical scheme is provided for resource utilization of the aluminum electrolysis solid waste.

The application discloses a fluorite tailing waste residue production method of aluminum fluoride, and relates to the technical field of aluminum fluoride production processes. The fluorite tailing waste residue production method of aluminum fluoride comprises the following steps: step one, mixing the purified fluorite tailing and concentrated sulfuric acid according to a proportion, and heating and reacting in a rotary kiln to generate hydrogen fluoride gas; and step two, passing the hydrogen fluoride gas into a fluidized bed, and fluidizing and reacting the hydrogen fluoride gas in the fluidized bed in a posture of rotating around an aluminum hydroxide bed layer, and driving the aluminum hydroxide bed layer to tumble under the flow of the hydrogen fluoride gas. Through the driving of a rotating assembly in the fluidized bed, the hydrogen fluoride gas is driven to rotate around the aluminum hydroxide bed layer for fluidization and combination reaction, so that the hydrogen fluoride gas always passes through the aluminum hydroxide bed with uniform thickness, and the hydrogen fluoride gas acts on the uniform tumbling fluidization reaction of the aluminum hydroxide bed layer.

The invention belongs to the technical field of novel refractory materials, and particularly relates to a low-dimensional mullite phase reinforced silicon carbide-aluminate refractory product and a preparation method thereof. The low-dimensional mullite phase enhanced silicon carbide-aluminate refractory product is prepared from the following raw materials in percentage by mass: 50 to 85 percent of aggregate, 6 to 35 percent of matrix, 1 to 10 percent of binding agent, 0.1 to 6 percent of additive and water reducing agent which accounts for 0.1 to 1 percent of the total mass of the raw materials, the binding agent is hydrated alumina (rho-Al2O3), and the additive is at least one of ammonium molybdate, boric oxide, aluminum fluoride, silica powder, tungsten oxide and molybdenum oxide. According to the invention, a hydrated alumina binding agent and an additive have a synergistic effect, and a low-dimensional mullite phase is catalytically generated through staged temperature-controlled sintering in a buried carbon atmosphere. The problems that a silicon carbide-aluminate refractory material is poor in interface bonding property, low in strength, easy to oxidize at high temperature, water-oxygen corrosion, high in heat conductivity and the like are solved.