793 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 composite modified admixture based on low-quality silica fume and lithium slag. The composite modified admixture comprises the following components in parts by weight: 20-30 parts of low-quality silica fume, 20-30 parts of lithium slag, 0.5-1 part of a composite dispersant, 0.1-0.3 part of a grinding aid and 40-60 parts of water, the composite dispersing agent comprises an electrostatic potential dispersing component, a suspension stabilizing component and water. The low-quality silica fume and the lithium slag are used as main raw materials, the composite dispersing agent and the grinding aid are combined, the slurry-shaped composite admixture is prepared by adopting a wet grinding process, and the problems of poor discharging fluidity, large quality fluctuation and the like caused by high moisture, low fineness and high water content of the powdery lithium slag can be effectively solved; meanwhile, the technical problems of low tank storage utilization rate, easiness in blockage in pipeline conveying, poor stirring dispersity and the like when the silica fume is used as superfine powder are solved, and an effective way can be provided for resource utilization of the low-quality silica fume and the lithium slag.

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 discloses a preparation method of acrylic ink, which comprises the following steps: S1, mixing acrylic acid, waterborne acrylic resin, polyvinyl alcohol resin, alkyl glycoside and deionized water in a homogenizer, adding casein, and performing ultrasonic treatment in ultrasonic equipment to obtain acrylic mixed emulsion; s2, dispersing an acrylic acid mixed emulsion, carbon black, modified sodium alginate, a polycarbodiimide emulsion, polyether modified organic silicon and sodium carboxymethyl cellulose in a dispersion kettle to obtain a mixture; s3, grinding the mixture in a wet grinding machine; and S4, putting the ground mixture into a stirrer, adding triethanolamine, and mixing to obtain the finished ink. The water-based ink prepared by the invention has the advantages of strong adhesive force, good water resistance, high surface drying speed, good ink glossiness, difficulty in oxidation and decoloration, environmental protection, safety, simple production process and easiness in popularization.

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 technical field of quartz raw ore process mineralogy analysis, and particularly relates to a quartz raw ore process mineralogy analysis method which is a method for judging whether quartz raw ore can be used as high-purity quartz raw ore or not. The quartz raw ore is subjected to sample preparation, wherein a sample preparation method of a powder sample comprises the steps of crushing, wet grinding, filtering concentration and drying in sequence; carrying out chemical component analysis, phase component analysis and crystal structure analysis on the obtained powder sample; and carrying out electron probe microcell analysis, laser Raman spectrum analysis, lithofacies microscopic analysis and inclusion microscopic analysis on the obtained optical sheet. According to the quartz raw ore process mineralogy analysis method, the preparation method of the powder sample is simple, low in energy consumption and environmentally friendly, meanwhile, the obtained powder sample is slightly polluted by the outside, the obtained quartz raw ore process mineralogy analysis result can be closer to a true value, meanwhile, stable production of high-purity quartz sand can be ensured, and the production cost is reduced. And the loss of manpower, financial resources and material resources is reduced.

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.

The invention relates to the technical field of ceramic materials, in particular to vanadium-based zircon microwave dielectric ceramic and a preparation method thereof.The vanadium-based zircon microwave dielectric ceramic is prepared from, by weight, Bi2O3, La2O3, CeO2, Nd2O3, Sm2O3 and NH4VO3, the chemical formula of the vanadium-based zircon microwave dielectric ceramic is (Bi < 0.2 > La < 0.2 > Ce < 0.2 > Nd0. 2Sm < 0.2 >) VO4, powder of Bi2O3, La2O3, CeO2, Nd2O3, Sm2O3 and NH4VO3 is obtained based on the components of the vanadium-based zircon microwave dielectric ceramic by weight, and original powder is obtained; stirring and mixing the original powder, performing wet grinding treatment and drying treatment to obtain dried powder, and pre-sintering the dried powder in the air atmosphere to obtain pre-sintered powder; a binder is added into the pre-sintered powder for granulation, compression molding is carried out, sintering is carried out in the air atmosphere, the vanadium-based zircon microwave dielectric ceramic is obtained, the vanadium-based zircon microwave dielectric ceramic has the near-zero resonant frequency temperature coefficient, the thermal stability of a device can be guaranteed, and the service life of the device is prolonged. The method is widely used for manufacturing microwave devices such as various dielectric antenna substrates, resonators and filters.

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 provides an all-solid-state battery electrode slurry preparation method, which comprises: S101, mixing a positive electrode active material, a sulfide solid electrolyte and a non-polar solvent after weighing to obtain a mixture A; s102, mixing the mixture A with a conductive agent to obtain a mixture B; s103, the mixture B and the binder solution are mixed and pulped, and the slurry is obtained. The positive electrode active material, the sulfide solid electrolyte and the non-polar solvent are subjected to wet grinding together, and the non-polar solvent can dissolve and disperse the sulfide solid electrolyte so that the sulfide solid electrolyte can make full contact with the positive electrode active material. The strong shearing force of wet grinding during mixing can refine the sulfide solid electrolyte to reduce the particle size of the sulfide solid electrolyte, so that the contact state of the sulfide solid electrolyte and the positive electrode active material is improved. The conductive agent is added after the first mixing, so that the damage of the conductive agent to the sulfide solid electrolyte is reduced, and the integrity of an electron transport network after the slurry is prepared into an electrode is ensured.

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 wafer clamping arm and a system, a method and a device for controlling the wafer clamping arm, the wafer clamping arm comprises a clamping arm, a sensor and peripheral support and a transmission structure, the sensor and peripheral support is connected with the clamping arm and comprises a receiving sensor support for holding and clamping the receiving end of a correlation sensor, and the transmission structure is connected with the sensor and peripheral support. The transmitting sensor support clamps the transmitting end of the correlation sensor, and the bottom of the receiving sensor support and the bottom of the transmitting sensor support are each of a large hydrophobic included angle structure; the transmission structure is configured to drive the clamping arm to lift the wafer to be processed out of the semiconductor wet process environment through a control instruction, and the control instruction is obtained under the condition that the correlation sensor determines that the clamping arm clamps the wafer to be processed. Therefore, when the wafer clamping arm can clamp the wafer to be lifted out of a wet grinding environment, the water drop path can be shunted and condensed, so that the water drops can be quickly separated and drop, and the detection reliability of the sensor 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 relates to a method for calcining ardealite in a segmented combined manner, which comprises the following steps: carrying out wet grinding pretreatment on fresh ardealite raw slag after clear water size mixing, and carrying out flotation impurity removal on wet grinding slurry; ardealite obtained through flotation is filtered, washed with water and filtered again, and purified ardealite powder is obtained; feeding the water-containing purified ardealite powder to a tubular calcining kiln, and sequentially preheating, drying and calcining to obtain semi-hydrated gypsum powder; grinding the semi-hydrated gypsum powder and then carrying out cyclone classification to obtain fine-grained powder and coarse-grained powder, or directly cooling and grinding to obtain high-quality beta gypsum powder; feeding the fine-fraction powder to a two-section tubular calcining kiln, continuing high-temperature calcining to obtain II-type anhydrous gypsum, and performing ultrafine grinding to obtain a filler; according to the method, the production organization is flexible and diverse, three different products including the high-quality beta gypsum powder, the beta gypsum powder and the type II anhydrous gypsum filler can be obtained, and the product quality is excellent.

The invention relates to the technical field of fine chemical engineering, in particular to superfine ground calcium carbonate for a high-specific-surface-area low-moisture sealant as well as a preparation method and application of the superfine ground calcium carbonate. The preparation method comprises the following steps: mixing calcite particles with a compound grinding aid, and carrying out wet grinding to obtain a ground product; performing multiple grading treatment on the ground product to obtain a graded product; mixing the graded product with a moisture scavenger and a modifier, and modifying to obtain superfine heavy calcium carbonate; in the superfine heavy calcium carbonate, the content of particles smaller than or equal to 2 microns in calcium carbonate is larger than or equal to 85 wt%, D97 is smaller than or equal to 2.7 microns, the specific surface area is larger than or equal to 9 m < 2 > / g, and the water content is smaller than or equal to 500 ppm, the problems that traditional heavy calcium carbonate is poor in reinforcing effect, relatively high in water content and prone to sedimentation are solved, the dehydration time can be saved, the production efficiency can be improved, and the requirements of downstream customers are met; meanwhile, the stability of batches is good, the anti-settling effect is good, and part of light nano-calcium can be replaced in sealant production.

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 present invention provides a method for comprehensive utilization of ferroboron mixed concentrate based on atmosphere-controlled low-temperature roasting. In the present invention, a mixture of ferroboron mixed concentrate powder and sodium carbonate is pre-blocked, and the blocks are roasted in an atmosphere containing CO and / or CO2, H2, and N2. The roasting temperature is 500-900°C, and the roasting time is 10-60 minutes. The roasted sample is placed in a ball mill for wet grinding according to a certain slurry concentration. The slurry can be filtered to obtain a sodium borate solution, and the filtrate can be used to prepare borax or boric acid products; the filter residue can be subjected to magnetic separation to obtain a high-grade magnetite concentrate, which is a high-quality raw material for ironmaking. The magnetically separated tailings are magnesium-silicon enriched products, which can be used as a raw material for preparing refractory / insulating materials. The present invention has the advantages of simple operation, strong raw material adaptability, environmental protection and energy saving, high production efficiency, and high utilization rate of boron, magnesium, and iron. It provides technical support for the efficient and comprehensive utilization of my country's abundant ferroboron-magnesium-iron ore resources, and has broad prospects for promotion and application.

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 provides an intelligent grinding and polishing control method and system, and belongs to the technical field of grinding and polishing control. The method comprises the steps that the target single-time machining amount and the total machining frequency are determined according to the total machining allowance of a current machining face and the type of a current abrasive; the first temperature of the current grinding material, the second temperature of the current machining face, the working face shape information of the current grinding material, the surface shape information of the current machining face and the current machining frequency are detected; determining the contact area of the current grinding material and the current machining surface according to the working surface shape information and the surface shape information; and during accurate grinding, whether cooling liquid for grinding and polishing is provided or not is judged according to the current machining times, the first temperature, the second temperature and accumulated machining heat, and the accumulated machining heat is calculated according to the target single-time machining amount and the contact area. According to the intelligent grinding and polishing control method and system, starting of wet grinding can be more accurately controlled, and the control accuracy is improved.

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.