575 results about "Wet grinding" patented technology

The invention discloses a pure bio-based PHA aqueous dispersion as well as a preparation method and application thereof, and belongs to the technical field of pure bio-based polymer aqueous dispersion. According to the dispersion, polyhydroxyalkanoate is used as a unique film forming matter, Pickering solid particles and a natural surfactant are adopted for synergistic stabilization, and a bio-based plasticizer can be selected. The emulsion or slurry with the polyhydroxyalkanoate content of 40-85wt% and the particle size of 0.2-3m is prepared through a melting high-pressure homogenization method, a low-temperature wet grinding method or a solvent replacement method. The coating does not contain petrochemical polymer protective colloid and perfluorinated and polyfluoroalkyl substances, and the bio-based content is greater than or equal to 99%. Due to the excellent stability, rheological property and film-forming property of the modified starch, the modified starch becomes an ideal basic material for constructing a multi-layer programmable controlled release and degradation functional coating system, can be used in the fields of paper-based barrier coatings, adhesives, advanced crop seed coats and the like, realizes excellent barrier, bonding and controlled release properties, meets the industrial compost and repulping property standards, and has wide application prospects. The method has green, environment-friendly and industrial potential.

The invention discloses a production method for preparing a potassium humate fertilizer through continuous high-pressure hydrothermal reaction of potassium feldspar, and relates to a wet grinding pulping process, a hydrothermal reaction process, a flash evaporation filter pressing process, a humic acid modified potassium fertilizer preparation process and a causticization and humic acid modified silicon-calcium fertilizer preparation process. The preparation method comprises the following steps: firstly, carrying out high-pressure tubular hydrothermal reaction and tower-type delayed reaction on potassium feldspar alkaline ore pulp prepared by fine grinding to prepare potassium aluminosilicate and calcium silicate, mixing alkaline potassium aluminosilicate filter residues obtained by filtering with humic acid, modifying, granulating and drying to obtain a humic acid coated long-acting slow-release potassium fertilizer product. The alkaline calcium silicate filtrate and lime are subjected to a causticization reaction to obtain a KOH solution, the KOH solution is returned to a wet pulping process to be recycled, and the alkaline calcium silicate and the humic acid are mixed, modified, granulated and dried to produce the humic acid coated long-acting slow-release silicon-calcium fertilizer product.

The invention discloses a high-hardness tungsten carbide-cobalt hard alloy and a preparation method thereof. A production raw material formula comprises the following components in parts by mass: 100 parts of tungsten carbide powder, 6-20 parts of cobalt powder, 0.2-1.3 parts of a composite sintering aid, 0.5-4 parts of a wet grinding medium and 0.2-4 parts of a forming agent, the composite sintering aid is composed of rare earth oxide and cobalt phosphide according to the mass ratio of (1-5): 1. The method has the advantages that on the premise that the toughness of the tungsten carbide-cobalt hard alloy is slightly improved, the hardness and wear resistance of the alloy are remarkably improved, and the industrial problems that the hardness improvement of the tungsten carbide-cobalt hard alloy with a single sintering aid is limited and the toughness of the alloy is lost are solved.

The invention relates to the technical field of lithium ion battery negative electrode materials, in particular to a silicon-carbon negative electrode material, a preparation method thereof and an electrochemical device. The silicon-carbon negative electrode material comprises nano silicon slurry and organic carbon, and the mass ratio of a silicon material to the organic carbon is (1: 0.1)-(1: 2); the nano silicon slurry is prepared by wet grinding and comprises micron silicon powder, dispersion liquid, a dispersing agent, an antioxidant and an ammonia-containing conditioning agent, and the mass ratio of the micron silicon powder to the dispersion liquid to the dispersing agent to the antioxidant to the ammonia-containing conditioning agent is (1-4): (10-20): (0-1): (0-1): (0-1). According to the nanometer silicon grinding formula and the preparation method of the silicon-carbon negative electrode material provided by the invention, the ammonia-containing tempering agent is added in the physical grinding process, so that the dispersity of nanometer silicon in the slurry is improved, the grinding efficiency is improved, the particle size of the nanometer silicon is reduced, the grinding energy consumption can be remarkably saved, the production cost is reduced, and commercialization is promoted.

The invention provides a method for preparing a carbon sequestration underground cemented filling material by carbonizing and activating all solid wastes. Firstly, alkaline solid waste and water are compounded to obtain solid waste slurry, and an inducer and the solid waste slurry are stirred at a low speed to obtain first slurry; secondly, under the condition of continuously introducing carbon dioxide, carrying out wet grinding treatment on the first slurry to obtain second slurry, and then adding a stabilizer to continuously carry out wet grinding treatment to obtain third slurry; and finally, uniformly mixing the third slurry, semi-hydrated phosphogypsum, iron tailings and water, and vibrating for multiple times to obtain the carbon sequestration underground cemented filling material. The carbon sequestration rate of the prepared carbon sequestration underground cemented filling material can reach 12.2%-20.4%, the softening coefficient can reach 0.86, and the carbon sequestration underground cemented filling material meets the requirements of tailing concrete of C3 strength grade, F3 expansion degree and S1 shrinkage rate in JC / T 2478-2018 Mine Goaf Filling Tailing Concrete, and has a wide application prospect as a mine and underground filling material.

The invention belongs to the field of hard alloy, and particularly relates to a preparation method for improving abrasion resistance of hard alloy and the hard alloy. The preparation method comprises the following steps that S1, superfine tungsten carbide, medium-particle tungsten carbide, cobalt powder and tantalum carbide are obtained; s2, superfine tungsten carbide, tantalum carbide and cobalt powder are mixed and then subjected to first wet grinding, and first slurry is obtained; s3, medium-particle tungsten carbide is added into the first slurry for second wet grinding to obtain second slurry, and the second slurry is dried and pressed to obtain a pressed blank; and S4, the pressed blank is subjected to first sintering, and then second sintering is conducted to obtain the hard alloy. The superfine tungsten carbide is added to promote complete development of tungsten carbide grains and reduce abrasive wear, the superfine tungsten carbide and the fine-particle cobalt powder are pretreated, and the two-stage sintering process is adopted, so that uniform distribution of a cobalt phase in the sintering process is improved, the bonding strength of the tungsten carbide grains and a cobalt phase interface is enhanced, and the wear resistance of the abrasive is improved. Therefore, wear resistance of the hard alloy is improved.

A method for processing a floral starting material, such as a nut, bean, seed, grain, herb, flower, vegetable, fruit, leaf, stem, or spice, comprising: a) wet grinding the FSM to form a wet paste; b) drying the wet paste to form a dried intermediate; and c) grinding the dried intermediate to form a powder. Powders, particularly fine powders, made by such a method.

The invention discloses a foam particle reinforcement-based lightweight Dehua white porcelain sculpture and a preparation process thereof, and relates to the field of ceramics, the foam particle reinforcement-based lightweight Dehua white porcelain sculpture comprises white porcelain slurry and thermoplastic foam particles with closed pore structures, the matrix raw materials comprise the following raw materials in parts by weight: 60-70 parts of Dehua kaolin, 20-25 parts of quartz and 10-15 parts of feldspar, the water content of the white porcelain slurry is 25-30%, the volume ratio of the thermoplastic foam particles to the white porcelain slurry is 1: (0.2-0.5), and the thermoplastic foam particles are polystyrene or polyurethane particles. The oriented microporous structure is formed by the thermoplastic foam particles, so that the density of the white porcelain sculpture finished product is reduced to 1.2-1.8 g / cm < 3 >, the weight is reduced by 30-50% compared with the traditional white porcelain sculpture finished product, and the weight and the transportation and installation cost of the white porcelain sculpture finished product are greatly reduced.

The invention discloses a method for regenerating a lithium iron phosphate positive electrode material by wet grinding, a positive electrode plate and a battery, and relates to the technical field of battery materials, the method comprises the following steps: pre-treating a waste lithium iron phosphate material to obtain a pre-treated lithium iron phosphate positive electrode plate; immersing the pretreated lithium iron phosphate positive plate in a deionized liquid to obtain stripped lithium iron phosphate; preparing a lithium supplementing solution, immersing the stripped lithium iron phosphate into the lithium supplementing solution to obtain a lithium supplementing mixed solution, and grinding the lithium supplementing mixed solution for a first preset time to obtain a reacted mixture; and separating a solid in the reacted mixture, and drying the solid to obtain the regenerated lithium iron phosphate material. According to the present invention, the positive electrode material of the waste lithium iron phosphate battery can be refined and homogenized, the reaction activity of the material is improved, and the lithium salt is configured in the grinding liquid phase so as to supplement the defective lithium element in the retired lithium iron phosphate, such that the electrochemical performance of the prepared regenerated lithium iron phosphate is improved.

The invention discloses a process for extracting lithium from lepidolite through low-temperature roasting, which comprises the following steps: uniformly mixing lepidolite mineral powder with ferrous sulfate, sodium sulfate and calcium oxide, roasting at 800-900 DEG C for 1-2 hours, and cooling to room temperature to obtain a roasted material; adding water into the roasted material to prepare slurry, performing wet grinding to obtain ball-milled slurry, performing water leaching on the slurry, and performing suction filtration to obtain lithium sulfate leaching liquid and leaching residues; treating the leaching solution to obtain a lithium precipitation pre-solution, and further carrying out lithium precipitation reaction to obtain a lithium carbonate crude product; and finally, mixing the crude lithium carbonate product with deionized water, heating, stirring, washing and carrying out solid-liquid separation to obtain a battery-grade lithium carbonate product. The lithium extraction process of the lepidolite can be realized under the roasting condition of 800-900 DEG C, and the roasting temperature is effectively reduced; meanwhile, on the basis of the low-temperature roasting condition, Li2SO4 and LiKSO4 can still be extracted to the maximum extent, and release of SO2, SO3 and HF is avoided.

The invention belongs to the technical field of laser cladding, and particularly relates to a TiC-Fe-Cr coating powder material for an automobile brake disc and a preparation method and application of the TiC-Fe-Cr coating powder material. The coating powder material is prepared from 60%-80% of TiC powder, 15%-30% of Fe powder, 4%-11% of Cr powder and 0.8%-2.2% of polyethylene glycol through mixing, wet grinding, spray drying, compression molding, sintering crushing and spherical densification treatment, and the coating powder material is attached to the surface of the brake disc in a laser cladding mode. By utilizing the arrangement, the invention provides a coating powder material which solves the problem of lack of a special laser cladding material for an aluminum alloy brake disc and overcomes the technical bottlenecks that a traditional grey cast iron brake disc is heavy in weight, quick in abrasion, capable of generating dust and easy to rust and an aluminum alloy brake disc is low in hardness and poor in abrasion resistance.

The invention discloses a fly ash pretreatment method and a preparation method and application of an anti-corrosion and wear-resistant coating, and relates to the technical field of fly ash treatment, and the method comprises the following steps: s1, dispersing inferior fly ash in water, and then uniformly stirring to form ore pulp; s2, an emulsifying agent is dissolved in water, a collecting agent is added under stirring, and then an O / W type emulsifying collecting agent is obtained; s3, the prepared O / W type emulsifying collecting agent and foaming agent are added into the ore pulp, first-stage flotation solid removal treatment is conducted after sufficient stirring, and first-stage solid-removed fly ash is obtained; s4, drying the obtained first-stage solid-removed fly ash, and then carrying out second-stage electric separation solid-removed treatment to obtain second-stage solid-removed fly ash; and s5, adding a modifier and water into the obtained secondary solid-removed fly ash, carrying out wet grinding, taking out the fly ash after the modifier fully reacts with the fly ash, taking out the fly ash, drying the fly ash, and carrying out dry grinding to obtain the fly ash subjected to chambering modification. Therefore, the problem of incapability of direct resource utilization due to excessive impurity content of fly ash in the power plant in the prior art is avoided.

The invention discloses a processing technology and equipment based on traditional Chinese medicine decoction pieces, and belongs to the technical field of traditional Chinese medicine processing. A grinding cylinder and a movable grinding sleeve are additionally arranged on a traditional grinding structure composed of a grinding roller and a fixed grinding sleeve to form a novel grinding device, and during working, coarse grinding objects treated by the grinding roller fall into an annular grinding cavity through coarse filtering holes, and then are ground into a grinding cavity; the rolling grinding column and the spraying column are used for carrying out secondary grinding on coarse grinding objects, meanwhile, a water supply structure is used for spraying out an aqueous solution from a spraying opening in the spraying column, and sprayed water flow impacts up and down, so that on one hand, a wet grinding environment is provided, the grinding effect is improved, and on the other hand, the grinding objects blocked in coarse filtering holes and fine filtering holes are dispersed; the discharging speed is increased, fine grinding materials directly fall into the ultrasonic treatment device on the lower portion along with water flow, the layer-by-layer small-volume ultrasonic wall breaking process is directly carried out while the grinding process is achieved, the fine grinding water solution on the lowest layer is gradually discharged within the preset time, and the ultrasonic wall breaking effect is improved.

The invention discloses a method for improving the manganese leaching rate and a manganese leaching process, and belongs to the technical field of manganese extraction.The method comprises the steps that after the water content of mineral aggregate is adjusted to be 10% or above, microwave pretreatment is conducted; adding an auxiliary agent polyvinylpyrrolidone into the mineral aggregate subjected to microwave treatment; mixing the mineral aggregate added with polyvinylpyrrolidone with water, carrying out wet grinding, and adding ultrasonic treatment in the wet grinding process to obtain ore pulp; concentrated sulfuric acid, water and the obtained ore pulp are mixed for sulfuric acid leaching treatment; and after the sulfuric acid leaching treatment reaction is completed, solid-liquid separation is carried out, and a leaching solution with the high manganese content is obtained. The method can improve the manganese leaching rate of the manganese ore.

A method for comprehensive treatment of high-iron and low-silicon red mud through alkali magnetization roasting belongs to the technical field of metallurgy and comprises the following steps: (1) mixing the high-iron and low-silicon red mud, liquid caustic soda and a solid reducing agent, and granulating to obtain raw material pellets; (2) the raw material pellets are dried through kiln tail gas to remove adsorbed water and part of crystal water, and dried pellets are obtained; (3) the dried pellets are subjected to reduction roasting in an inert protective gas atmosphere in a dry roasting mode, and clinker pellets are obtained; and (4) the clinker pellets and a dilute alkali solution are subjected to wet grinding leaching and the like. According to the method, the high-iron and low-silicon red mud is supplemented with liquid caustic soda and solid reducing agents such as coal or sawdust organic matter and roasted, directional regulation and control of a red mud mineral phase are achieved, iron and aluminum resources are recycled in the form of magnetite and sodium aluminate, and the using amount of the reducing agents and the reaction temperature are remarkably reduced.

The invention belongs to the field of batteries, and particularly discloses a lithium manganese iron phosphate material as well as a preparation method and application thereof. The preparation method comprises the following steps: sequentially performing wet grinding and mixing, spray drying and first sintering on a lithium source, a manganese source, an iron source, a phosphorus source and a doping source to obtain an intermediate material; and carrying out ball-milling mixing and secondary sintering on the intermediate material, a forming aid and a carbon source to finally obtain the lithium manganese iron phosphate material. According to the method, the compaction density and the conductivity of the material can be improved at the same time, so that the specific discharge capacity, the efficiency and the cycle performance of the battery are improved.

The invention provides a red mud resource reutilization method which comprises the following steps: weighing raw materials according to the proportion of the raw materials, and grinding the raw materials into powder to obtain mixed powder; the raw materials comprise 70%-95% of matrix ceramic, 0.1%-30% of auxiliary ceramic and 0.1%-30% of red mud. Putting the mixed powder into a planetary ball mill, taking out after wet milling, and drying in a vacuum drying oven; crushing the dried powder by using a crusher, and screening by using a screen; the sieved powder is loaded into a graphite mold to be pre-pressed; and sintering the graphite mold filled with the green body in a discharge plasma sintering furnace. And cooling along with the furnace to obtain the red mud doped alumina-based composite ceramic material. According to the method for recycling the red mud, efficient utilization of the red mud is achieved, the red mud is combined with aluminum oxide and auxiliary ceramic, the red mud-doped aluminum oxide-based composite ceramic material is prepared through the processes of high-energy ball milling, spark plasma sintering and the like, and the prepared material has the advantages of being high in toughness, hardness and strength and the like.

The invention discloses a hydrogen storage alloy and a preparation method thereof, relates to the technical field of metal functional materials, and solves the problems of high reaction temperature and low hydrogen absorption and dehydrogenation rate of a magnesium-based hydrogen storage material in the prior art. The prepared hydrogen storage alloy comprises the following alloy components in parts by mass: 5-15 parts of nickel, 2-8 parts of yttrium, 2-8 parts of ytterbium, 68.8-91 parts of magnesium and 0-0.2 part of impurities. A magnesium ingot, a magnesium-yttrium alloy and a magnesium-ytterbium alloy are melted, then magnesium-nickel alloy is added, stirring is conducted till the magnesium-nickel alloy is melted, standing is conducted, and casting is conducted to obtain a hydrogen storage magnesium alloy cast ingot; the method comprises the following steps: crushing a hydrogen storage magnesium alloy cast ingot, loading into a stainless steel ball milling tank for dry milling, and adding a solvent into the tank body for wet milling after the dry milling is finished; and drying to obtain the magnesium alloy flaky powder. According to the invention, multiphase cooperation, structure regulation and interface optimization of multiple elements are utilized, so that the hydrogen absorption and desorption performance of the hydrogen storage material is obviously enhanced.

The invention discloses a three-dimensional wet grinding machine and method based on metal powder machining, and relates to the technical field of wet grinding machines, the three-dimensional wet grinding machine comprises a rack, a wet grinding tank is arranged at the top of the rack, two material ports are formed in the outer side of the wet grinding tank, the two connecting frames are both fixedly connected to the outer side of the wet grinding tank, and the two material ports are arranged in the wet grinding tank. The two connecting frames are rotationally connected with the rack, and a transmission device used for driving the connecting frames to rotate is arranged in the rack. After wet grinding is completed, powder slurry is discharged, then the traction piece drives the driving mechanism to ascend, a medium is forced to continuously penetrate through the driving mechanism, abraded grinding balls in the medium are discharged in batches through the screening piece, the abraded grinding balls in the wet grinding tank can be automatically screened out, and it is avoided that a large number of grinding balls need to be discharged; and after discharging, screening treatment is carried out, and the discharged materials are supplemented.

The invention discloses an efficient pollution-free treatment method for municipal waste incineration fly ash, and relates to the technical field of waste resource utilization and environmental protection. Comprising the following steps: S1, adding the garbage fly ash into a hydrochloric acid solution, carrying out wet grinding, and carrying out centrifugal separation to obtain heavy metal filtrate and heavy metal-removed fly ash; washing the heavy metal-removed fly ash with clear water to obtain a washing solution; mixing the washing liquid with the heavy metal filtrate to obtain a heavy metal solution; s2, adding a complexing agent into the heavy metal solution, stirring and mixing, standing overnight, performing centrifugal separation to obtain a heavy metal removal solution and a heavy metal complex, and adjusting the pH value of the heavy metal removal solution to be neutral to complete heavy metal removal treatment; s3, uniformly mixing the washed heavy metal-removed fly ash and a catalyst, performing low-temperature pyrolysis treatment, sieving and separating to obtain dioxin-removed fly ash, and completing dioxin removal treatment; and S4, the heavy metal removal solution and the heavy metal complex are treated, and garbage fly ash treatment is completed.

The invention relates to the technical field of lithium ion batteries, and discloses a high-compaction-density lithium iron phosphate positive electrode material preparation method, which comprises: 1, mixing and grinding iron phosphate, lithium carbonate, a carbon source, a dispersant and deionized water to obtain a mixed slurry, and carrying out wet grinding on the mixed slurry; step 2, carrying out spray drying on the mixed slurry subjected to the wet grinding reaction to obtain lithium iron phosphate precursor powder, and carrying out mold pressing on the lithium iron phosphate precursor powder to obtain a material before calcination; and 3, carrying out self-propagating calcination on the material, and cooling to obtain a lithium iron phosphate finished product. According to the invention, a wet grinding and self-propagating high-temperature synthesis combined method is adopted, a wet grinding treatment method is adopted at the front end, the shrinkage and compactness of particles are improved by controlling the particle size activity and uniformity among the particles and finally adopting self-propagating sintering in the calcining process, and meanwhile, the particle grading effect of the treated material can also be improved, so that the particle size distribution effect of the material is improved. Therefore, the compaction density index of the lithium iron phosphate is improved.

The invention discloses a wooden furniture coating, which is prepared from the following ingredients in parts by weight: 40 to 42 parts of waterborne alkyd resin, 15 to 18 parts of modified cellulose emulsion, 5 to 8 parts of polyethylene glycol, 3 to 4 parts of nano clay, 1 to 2 parts of aerogel, 1 to 1.5 parts of sodium carboxymethyl cellulose, 9 to 12 parts of pigment and 40 to 45 parts of deionized water. The preparation method of the wood furniture coating comprises the following steps: dispersing and mixing the water-based alkyd resin, polyethylene glycol, nano clay, aerogel, sodium carboxymethyl cellulose and deionized water in proportion, putting the mixture into a wet grinding machine, adding the modified cellulose emulsion and the pigment, and grinding to obtain the wood furniture coating. The prepared wood furniture coating is high in adhesive force and wear resistance and not prone to peeling and falling off, the used raw materials are all environment-friendly raw materials, the volatile organic compounds (VOC) are low, and the influence on the body and the environment is small.

The invention discloses a method for jointly recovering zinc and cadmium from zinc-cadmium slag of zinc hydrometallurgy. The method comprises the following steps: S1, carrying out acid leaching on the zinc-cadmium slag and adding zinc powder for replacement; s2, sponge cadmium is subjected to vacuum melting; s3, adding clear water and calcium oxide into the cadmium alkaline residues for wet grinding, filtering to obtain clear liquid and filter residues, and returning sodium hydroxide obtained after the clear liquid is evaporated and crystallized to S2; s4, the filter residues are subjected to reduction roasting, recyclable zinc-cadmium smoke dust, calcium oxide residues and sulfur trioxide are obtained, the calcium oxide residues are returned to S3, sulfuric acid is prepared from sulfur trioxide, and a part of sulfuric acid is returned to S1; the other part of sulfuric acid enters the next step; s5, the smoke dust is dissolved with sulfuric acid, a sulfuric acid solution containing zinc and cadmium is obtained, then zinc powder is added for replacement, and sponge cadmium and a zinc sulfate solution are obtained; the sponge cadmium returns to S2, and the zinc sulfate returns to S1. According to the method, the cadmium alkaline residue treatment product can be effectively recycled and utilized, the cadmium alkaline residue treatment cost is reduced, no cadmium element flows out of the process to cause environmental pollution, and the method is an environment-friendly process method.

The hyperfine wet grinding system comprises a grinding machine, two grinding tanks, a coarse material tank, an intermediate tank, a hydrocyclone, an overflow collecting tank, an underflow collecting tank and a pipeline ultrasonic device, the discharging ends of the two grinding tanks and the coarse material tank are converged through a first pipeline and then are connected with the feeding end of the grinding machine; the intermediate tank is connected with the discharging end of the grinding machine through a second pipeline; the pipeline ultrasonic device is connected to the second pipeline in series; the discharging end of the intermediate tank is connected with the hydrocyclone through a third pipeline, and the third pipeline is connected with a cyclone pump in series; an overflow port of the hydrocyclone is connected with the overflow collecting tank through a fourth pipeline, an underflow discharge port of the hydrocyclone is opposite to the underflow collecting tank, and a discharge port of the underflow collecting tank is connected with the coarse material tank through a fifth pipeline; the outlet end of the overflow collecting tank is connected with the two grinding tanks through a sixth pipeline; the system overcomes the problems of non-uniform grinding and excessive grinding in the prior art. The grinding method is simple in step, convenient to operate and capable of achieving continuous automation.

The invention discloses a modified lithium manganese iron phosphate positive electrode material and a preparation method and application thereof, and the preparation method comprises the following steps: S1, carrying out wet grinding on 100 parts by mass of a precursor, 2-5 parts by mass of a carbon source and 0.5-1.5 parts by mass of TiCN to obtain slurry; s2, sintering and annealing the slurry to obtain a modified lithium manganese iron phosphate positive electrode material; the preparation method of the precursor comprises the following steps: mixing a lithium hydroxide solution, a modified concentrated phosphoric acid solution and a salt solution to obtain a precursor solution, and carrying out hydrothermal reaction and drying on the precursor solution to obtain the precursor. The raw materials of the modified lithium iron manganese phosphate positive electrode material are doped with nickel and cobalt, so that the capacity of the positive electrode material is improved, and the positive electrode material can be stabilized; the carbon source and TiCN are used as coating materials, so that agglomeration in the sintering process of the positive electrode material can be effectively controlled.

The invention discloses a method for preparing an underground cemented high-water-expansion filling material from negative carbon all-solid waste and application, the method comprises the following steps: raw material pretreatment: mixing magnesium slag, steel slag and a dispersion medium to prepare solid waste slurry, adding an inducer into the solid waste slurry, and carrying out wet ball milling treatment to obtain first slurry; wet grinding and carbonization: under the condition of continuously introducing CO2, carrying out wet ball-milling treatment on the first slurry to obtain second slurry; thickening and expansion regulation and control: adding a thickening agent and an expansion regulation and control agent into the second slurry, then carrying out wet ball milling treatment to obtain third slurry, mixing and molding, mixing the third slurry with a dispersion medium, gypsum and copper tailings, and carrying out vibration molding to obtain the underground cementing high-water-expansion filling material. The method takes industrial solid waste as a raw material, has double benefits of carbon sequestration and resource utilization, and is suitable for projects such as mine goaf filling and the like.

The invention relates to the technical field of new energy, and discloses a low-cost LATP solid electrolyte preparation method, which comprises: mixing a lithium source, an aluminum source, a titanium source, a phosphorus source, a wet grinding solvent and PVP, carrying out primary ball milling, drying, calcining, mixing the calcined powder with the wet grinding solvent, carrying out secondary ball milling, and drying to obtain the LATP solid electrolyte, the mass ratio of the PVP to the solid material is 1: (3-5). The LATP precursor mixed powder is directly prepared by performing simple physical ball-milling dispersion on the precursor, the wet-milling solvent and the dispersing agent through a wet-milling method, so that the high-temperature and high-pressure environments for treating the precursor in the traditional preparation method are avoided, and the calcined powder is subjected to ball-milling again, so that the LATP particles are uniformly dispersed and are smaller in particle size. The method has the advantages of high yield, low equipment requirement and high product purity, and is very suitable for large-batch process production.

The embodiment of the invention provides a crushing device for feldspar ore treatment, and relates to the technical field of feldspar ore treatment. The crushing device for feldspar ore treatment comprises a crushing box, the top of the crushing box communicates with a feeding hopper, the outer side of the crushing box is fixedly connected with a wet grinding box, the bottoms of the two sides of the wet grinding box communicate with discharging pipes, and one side of the wet grinding box is fixedly connected with a PLC; an air blowing frame is fixedly connected to the side, close to the feeding hopper, of the crushing box, buffer frames are fixedly connected to the periphery, away from the feeding hopper, of the crushing box, a crushing assembly and an extrusion assembly which are used for feldspar ore crushing treatment are arranged in an inner cavity of the crushing box, and an explosion assembly and a dust removal assembly are arranged on the crushing assembly; and a wet grinding assembly for refining feldspar ore is arranged at the bottom of the extrusion assembly. On the basis of the temperature control condition of thermal expansion and cold contraction, the mode of combining extrusion and crushing is adopted, and the efficient and fine crushing effect on feldspar is achieved.

The invention relates to an alumina-zirconia eutectic sintering material and a preparation method thereof, and relates to the technical field of high-temperature structural ceramic materials. The preparation method comprises the following steps: dispersing 80-95 parts of aluminum oxide powder, 1-10 parts of zirconium oxide powder and 0.1-1 part of yttrium oxide powder in a solvent, and carrying out wet grinding and drying to obtain mixed powder; and adding 1-3 parts of a binder into the mixed powder, uniformly grinding, drying, carrying out compression molding, and carrying out SPS (spark plasma sintering) treatment to obtain the alumina-zirconia eutectic sintering material. The alumina-zirconia eutectic sintering material is obtained through raw material powder wet grinding, compact preparation and spark plasma sintering. The eutectic sintering material has the characteristics of high strength, high fracture toughness, good creep resistance and the like; the method is simple and easy to operate, green and environment-friendly, low in cost, short in process, high in efficiency and beneficial to industrial large-scale production and popularization.

The invention discloses a preparation method of high-purity lithium sulfide based on a carbon reduction method, and belongs to the technical field of material preparation. Comprising the following steps: S1, mixing anhydrous lithium sulfate with a reducing agent, and adding absolute ethyl alcohol as a solvent, S2, drying a material subjected to wet grinding, removing the absolute ethyl alcohol solvent and water, and transferring the material into a tubular furnace or an atmosphere sintering furnace to obtain a dried material; s3, the environment temperature in the furnace is increased to 600-800 DEG C at the heating rate of 5-12 DEG C / min, heat preservation is conducted for 30-60 min, and a reduction reaction is conducted; s4, after a reduction reaction product is cooled to the room temperature, adding absolute ethyl alcohol, stirring until the absolute ethyl alcohol is fully dissolved, completing solid-liquid separation through a suction filtration device, collecting filtrate and distilling; and S5, drying the distilled product to obtain the high-purity lithium sulfide. By accurately controlling the raw material purity, the reaction parameters and the purification process, the product purity is greater than or equal to 99.5%, the yield is greater than or equal to 89%, and the high-performance application requirements of solid-state batteries and the like are completely met; the method is simple in process steps, moderate in equipment requirements and suitable for large-scale industrial production.