251results about How to "Uniform particles" patented technology

The invention relates to the technical field of battery materials, in particular to a ternary precursor, a preparation method thereof and a ternary positive electrode material. The preparation method of the ternary precursor comprises the following steps: preparing a mixed metal salt solution containing a nickel source, a cobalt source and a manganese source; the mixed metal salt solution, alkali liquor and a complexing agent are added into the base solution for a coprecipitation reaction, and the coprecipitation reaction comprises the steps that a nucleation reaction is conducted when the pH value of a reaction system ranges from 12 to 13, and then the pH value is gradually reduced to 11 or above along with the growth reaction till product particles reach the target particle size, in the process of gradually reducing the pH value to 11 or above, at least two times of pH value constant time exist, and the pH value constant time of one time is 40 hours or above; and carrying out solid-liquid separation on the product after the coprecipitation reaction is finished to obtain the ternary precursor. According to the preparation method, the ternary precursor material which is narrow in span distribution, small in particle and stable can be obtained.

The invention relates to a forging heat treatment process for an ultralow-temperature high-strength austenitic stainless steel forge piece. The forging heat treatment process comprises the following steps that S1, raw materials are smelted; s2, performing high-temperature diffusion annealing on the raw materials; step S3, forging: (1) heating for the first time, lightly pressing and rounding a steel ingot at the final forging temperature of more than or equal to 950 DEG C; (2) secondary heating is conducted, the steel ingot is upset and drawn out, and the finish forging temperature is larger than or equal to 900 DEG C; (3) the third heating number is carried out, the steel ingot is upset and drawn out, and the finish forging temperature is larger than or equal to 850 DEG C; s4, heat treatment: (1) water cooling treatment after forging; (2) performing rough machining on the forge piece; (3) carrying out solution treatment, wherein the solution temperature range is 1050-1120 DEG C; the forging method has the advantages that the internal quality of the forge piece is improved, grains are refined, non-uniformity is eliminated, and the overall mechanical performance is improved by improving the components and the structure of the steel ingot and the forging process.

The invention relates to the technical field of activated carbon production equipment, and discloses an activated carbon manufacturing raw material crushing and screening device which comprises a machine body serving as a supporting carrier of the whole device. The crushing box is mounted on one side of the top of the machine body; the crushing assembly is mounted in the crushing box and is used for crushing the activated carbon raw material; the efficient grinding assembly is mounted on the inner side of the machine body and used for further grinding the activated carbon raw materials; and the anti-blocking assembly is installed at the joint of the machine body and the smashing box, and it is guaranteed that the smashed raw materials can enter the machine body. Through the efficient grinding assembly and efficient grinding, the size of crushed particles can be better controlled, the particles are more uniform, follow-up screening of the activated carbon is facilitated, the screening effect and precision can be improved, it is guaranteed that raw material particles are small, and the small raw material particles guarantee formation of a pore structure and increase of the surface area of the activated carbon; therefore, the adsorption capacity of a final product is improved, and the overall quality and performance of activated carbon are improved.

The invention relates to the technical field of positive electrode materials, and discloses a preparation method of a carbon-coated fluorine-doped sodium ferric sulfate positive electrode material, which comprises the following steps: step 1, adding an iron source, a sodium source, a sulfur source, a carbon source and a fluorine source into deionized water, and heating and stirring to completely dissolve the raw materials to obtain a solution A; 2, converting the solution A into precursor powder B by using a spray drying method; and 3, calcining the precursor powder B in an inert atmosphere, and crushing and grinding the obtained product to obtain the carbon-coated fluorine-doped Na2Fe2 (SO4) 3 positive electrode material. The F element with higher electronegativity than the S element is introduced, so that the overall electron distribution of the material is changed, the structural stability is improved, and the high-conductivity carbon protection layer is coated on the surface of the active material to form a conductive network, so that the resistance is reduced, the volume expansion is relieved, and the battery capacity and the cycling stability can be obviously improved.

The invention discloses ultra-high molecular weight polyethylene pipe production equipment, and particularly relates to the technical field of polymer plastic processing, the ultra-high molecular weight polyethylene pipe production equipment comprises an equipment box, and an extrusion heating mechanism is arranged at the top of the equipment box; the extrusion heating mechanism comprises a driving device which is fixedly installed at the top of the equipment box, the output end of the driving device is fixedly connected with a transmission shaft, one end of the transmission shaft is fixedly provided with a gearbox, and one side of the gearbox is fixedly connected with a fixing pipe. The raw materials are efficiently pretreated, it is ensured that raw material particles are uniform and fully mixed, a good foundation is laid for the subsequent plasticizing and extruding process, the quality and performance stability of the pipe are improved, the temperature requirements of the ultra-high molecular weight polyethylene pipe in different production stages can be met, the molecular structure of the pipe is more regular, and the production efficiency is improved. Therefore, the strength, toughness and corrosion resistance of the pipe are enhanced, and reliable technical support is provided for large-scale production of the ultra-high molecular weight polyethylene pipe.

The invention belongs to the field of preparation processes of nano-porous materials, and relates to a method for preparing a silicon-based elastic aerogel phase-change thermal insulation material by an in-situ chemical method. A phase-change material with an oxygen-containing functional group on the surface is selected as a phase-change core material, a surfactant, deionized water, ethanol, a silicon precursor, acid, alkali and the phase-change core material are uniformly mixed and subjected to hydrolysis, polycondensation and other reactions, meanwhile, the phase-change core material and silicon-based aerogel are subjected to in-situ grafting combination in the process, and the silicon-based aerogel is prepared. The silicon-based elastic aerogel phase change thermal insulation material is prepared through sol-gel and supercritical drying. The invention innovatively provides an in-situ grafting method, and the constructed silicon-based elastic aerogel phase-change thermal insulation material integrates multiple functions of high thermal insulation property, elasticity, leakage prevention, high response rate and the like, has the advantages of low material cost and convenient preparation process, and is low in energy consumption and easy to realize large-scale production.

The invention provides a preparation method of silver-coated copper powder, and relates to the technical field of metal materials, the preparation method comprises the following steps: simultaneously dropwise adding a first silver-ammonia solution and a first reducing agent solution into a dispersion liquid of deoiled and activated spherical copper powder, reacting for 5-20 minutes after dropwise adding is finished, then simultaneously dropwise adding a second silver-ammonia solution and a second reducing agent solution, and reacting for 5-20 minutes after the reaction is finished; and reacting for 25-40 minutes, filtering, washing with water, and drying to obtain the silver-coated copper powder. The concentration of the first silver-ammonia solution is higher than that of the second silver-ammonia solution. The silver-coated copper powder obtained through the preparation method is good in particle regularity and size uniformity, few in agglomeration phenomenon, good in oxidation resistance and low in resistivity.

The invention provides a processing method of a cinnabar dwarf lilyturf tuber decoction piece. The cinnabar dwarf lilyturf tuber decoction piece is obtained by infiltrating dwarf lilyturf tuber, flattening, removing cores, drying, spraying clear water and uniformly mixing with cinnabar fine powder. Wherein the selected infiltrating solution retains the effective components of the radix ophiopogonis to the greatest extent, the anti-sticking layer is prepared for the product in the flattening process, and the cinnabar fine powder is prepared by adopting an ultrahigh-pressure water jet method.

The invention provides a bio-organic fertilizer preparation process based on a microbial fermentation technology, and relates to the technical field of organic fertilizer preparation, the process comprises the following steps: S1, raw material preparation: selecting different types of animal and plant wastes as organic raw materials, and pre-treating to adjust the physical properties of the organic raw materials so as to facilitate subsequent fermentation; s2, proportioning and adjusting: adjusting the carbon nitrogen ratio of the raw materials according to the characteristics of the raw materials, in the invention, through reasonable pretreatment of the raw materials and accurate adjustment of the carbon nitrogen ratio, the fermentation environment is improved, the degradation efficiency of microorganisms on organic matters is significantly improved, in the pretreatment step, by adjusting the physical properties of the raw materials, the contact area of the microorganisms and the organic matters is increased, and the degradation efficiency of the microorganisms on the organic matters is improved; the carbon-nitrogen ratio control during proportioning enables microorganisms to perform metabolic reaction more efficiently, the problem of nutrition imbalance in the fermentation process is reduced, the stability of the fermentation process is ensured by the optimization, and the overall quality of the organic fertilizer is improved.

The invention relates to a method for improving the activity of heavy magnesium oxide. According to the method, through the fine process steps of secondary cold water stirring, secondary time and temperature adjustment drying, primary calcination and the like, the activity of the heavy magnesium oxide is remarkably improved under the condition that the bulk density, the granularity and the crystal structure of the heavy magnesium oxide are not affected, and the active CAA value is increased from 500 seconds or above to 10 seconds to 185 seconds. In the whole preparation process, through reasonable selection of raw materials and accurate control of reaction conditions, high activity and excellent filling performance of magnesium oxide are realized, and finally, a high-performance magnesium oxide product suitable for various industrial applications is obtained. The method has the characteristics of simple process, environmental protection, high efficiency and low energy consumption, is especially suitable for large-scale production, and has wide application prospects in cobalt precipitation, sewage treatment and other industrial fields.

The invention relates to a high-entropy iron-manganese-based transition metal layered oxide positive electrode material and a preparation method and application thereof, and belongs to the technical field of sodium ion batteries, and the preparation method comprises the following steps: dissolving an iron source, a copper source, a manganese source and a nickel source in an aqueous solution of ethanol and ethylene glycol to form a first solution; dissolving a precipitator in an aqueous solution of methanol and ethanol to form a second solution; heating a methanol solution in an oil bath, dropwise adding the first solution and the second solution, introducing Ar and H2, adjusting the pH value of the solution, reacting, standing and aging, carrying out solid-liquid separation, washing and drying a product, fully mixing and grinding the product with a sodium supplementing agent, titanium dioxide and an organic solvent, heating in Ar and N2, cooling and rapidly grinding to obtain the positive electrode material. The method is simple in process, good in controllability, cheap in raw material and wide in raw material source, the prepared material is uniform in particle size, uniform in distribution and high in crystallinity, the electronic and ionic conductivity of the material is improved, high reversible capacity and excellent cycling stability are obtained, the cost is reduced, and meanwhile the electrochemical performance of the material is improved.

The preparation method comprises the following steps: sintering a lithium source at a high temperature by using a Ni sagger, mixing the products with Li2O being greater than 95.0% and less than 99.0% and NiO being greater than 1.0% and less than 3.5% in parts by mass with a lithium salt and a nickel source, and carrying out one-stage temperature control sintering to prepare the high-purity positive electrode lithium supplement material. A small amount of NiO with a catalytic effect is generated in the Li2O preparation process, the decomposition temperature of a lithium source can be obviously reduced, Li2O particles are uniform and small in particle size, and when the Li2O particles are mixed with a nickel source to prepare the lithium supplement agent Li2NiO2, mixing is more uniform, and the product purity is high. A small amount of NiO is used as one of subsequent raw material nickel sources, and compared with direct addition of the nickel sources, the contact area between the NiO and Li2O is large, so that the nucleation reaction rate is increased, the content of impurity NiO in the product and residual lithium on the surface can be obviously reduced, and the purity and irreversible specific capacity of the lithium supplementing agent Li2NiO2 are further improved.

The utility model relates to a vertical roller flour mill which comprises a roller flour mill main machine consisting of an upper machine body and a lower machine body, a main shaft component positioned in the lower machine body and a power mechanism for driving the main shaft component to rotate, the main shaft component comprises a main shaft, an airflow shunting center disc capable of synchronously rotating along with the main shaft, a wear-resistant curve large ring, a center disc mounting seat and a lower air inlet duct, the airflow shunting center disc is mounted on the center disc mounting seat, the center disc mounting seat is mounted on the main shaft, and the lower end of the center disc mounting seat and the lower air inlet duct are mounted together; the wear-resistant curve large ring is mounted on the central disc mounting seat; an air duct is mounted on the upper machine body, and after external airflow enters the lower machine body through the air duct, most airflow blows fine powder into the upper machine body; the utility model has the advantages of reasonable structure, simple and convenient operation, double gas circuit structure, lower end gas inlet to avoid material accumulation, high efficiency and energy saving.

The invention discloses a high-strength zirconia composite ceramic product and a preparation process thereof, and belongs to the technical field of ceramics. In the prior art, ceramics prepared from various inorganic materials such as zirconium oxide are easy to deform or crack in a hot press molding process; although the forming capacity of the powder can be improved by adding the binder, the technical problem that the strength of the ceramic product added with the binder and degreased is reduced exists. A preparation process of a high-strength zirconium oxide composite ceramic product comprises the following steps: mixing zirconium oxide, silicon nitride, zirconium boride and carbon nanotubes, and carrying out wet ball milling to obtain composite ceramic powder; mixing the composite ceramic powder and the binder mixture to obtain feed; carrying out pressure forming, degreasing and sintering on the feed to obtain a ceramic green body; the ceramic green body is subjected to metal ion injection and surface coating to obtain the high-strength zirconium oxide composite ceramic product. The prepared composite ceramic product is stable in forming structure and high in strength.

The invention relates to the technical field of soil detection, and provides a soil information acquisition device and method for fertilization control, the soil information acquisition device comprises an acquisition vehicle, a soil drilling mechanism, a driving module, a soil acquisition part, a rotating part, a sample containing box and a lifting part, the soil drilling mechanism comprises a first driving piece, a rotating shaft, a center frame, an arc-shaped shell, a filter screen and a drill bit; the inner wall of the arc-shaped shell is fixedly connected with a filter screen, the filter screen is used for dividing the arc-shaped shell into a first cavity and a second cavity, the driving module comprises a driving part, a transmission rod and an adjusting part, the soil collecting part comprises a first sleeve, an L-shaped block and a first key groove, and the rotating part comprises a second sleeve, a storage plate, a partition plate and a second key groove. According to the device, soil with small granularity can automatically enter the sample containing box below through the filter screen, weeds or large-particle soil can be automatically moved out of the outer side of the arc-shaped shell, the sample containing box can be automatically moved to the outer side of the arc-shaped shell, and the device has the advantages of being uniform in sample particle, high in purity and convenient to sample.

The invention discloses a ferroptosis-inducing targeted mPDA / MSNs nano-drug delivery carrier as well as a preparation method and application thereof, and relates to the technical field of preparation of targeted nano-delivery carriers. The preparation method comprises the following steps: firstly, connecting and modifying-NH2 to the surfaces of MSNs to obtain amino modified MSNs-NH2; the preparation method comprises the following steps: coating with mPDA to obtain mPDA / MSNs-NH2, and reacting with ferrous lactate to obtain Fe < 2 + >-mPDA / MSNs-NH2; the final carrier RGD-Fe2 +-mPDA / MSNs-NH2 is prepared by coupling an RGD targeting peptide, the particle size is uniform, the physicochemical property is stable, the ATRA and DOX encapsulation efficiency and the drug loading capacity are high, the drug can be responsively released in a simulated tumor microenvironment, a drug-loaded sample RFP / MN atD / A can deliver a drug into tumor cells in a targeting manner, ferroptosis can be rapidly induced, and the tumor cells can be effectively killed through synergistic chemotherapy.

The invention relates to the technical field of calcium formate production, in particular to a calcium formate efficient evaporative crystallization method which comprises the following steps: S1, mixing reaction; s2, removing impurities; s3, evaporative crystallization; s4, centrifugal drying; and S5, cooling and packaging. The method has the advantages that the whole process is simple, the production cost and the labor intensity are reduced, large-scale continuous production is easy to realize, the content of the produced calcium formate product is 99% or above, the purity is high, and the color is pure white; the triple-effect evaporation technology is adopted, energy consumption is reduced, the effects of energy conservation and emission reduction are achieved, meanwhile, crystals which are evenly distributed and large in particle size can be obtained through the last-effect DTB crystallizer, follow-up filtering and drying are facilitated, and energy consumption in the follow-up process can be greatly reduced; in the packaging process, the crystals are introduced into a cooler to be cooled and then conveyed to a cooling cyclone separator, the temperature of the crystals is reduced to 40 DEG C, it is guaranteed that particles are uniform and cannot be hardened, the quality is optimized, and the operation safety degree is also improved.

The invention discloses an iron-based MOFs composite electrode and application thereof. The preparation method comprises the following steps: firstly preparing Cu-coated Fe-ZIF powder in a coprecipitation manner, then preparing Fe2O3-coated Cu-coated Fe-ZIF powder by a hydrothermal reaction, step-by-step ultrasonic and vacuum arc method, and then fusing with S at high temperature by a hot melting method; and preparing the active material Fe2O3 (at) Cu (at) Fe-ZIF (at) S for the iron-based MOFs composite electrode. The Fe-ZIF material is selected as a metal frame to coat the surface of Cu, the Fe-ZIF material and Fe oxide are mixed, calcined and subjected to a direct-current vacuum arc method to synthesize the wooden-stick-shaped nanosphere particles, the defect concentration in a Fe2O3 structure can be effectively increased under the synergistic effect of the advantages of Cu-coated Fe-ZIF components, more loading space is provided for subsequent components such as sulfur, and the Fe-coated Fe-ZIF composite material has a good application prospect. The sulfur loading effect is improved, the sulfur utilization rate is improved, the volume change is relieved, and the battery performance is further improved.

The invention discloses a mixing and discharging device for plastic product particle batching, and relates to the technical field of plastic products, the mixing and discharging device comprises a processing box, a feeding port is arranged above the processing box, the feeding port is communicated with the processing box, a crushing assembly is arranged in the processing box, a return cavity is arranged on one side of the crushing assembly, and a sliding opening is arranged below the return cavity; a material returning opening is formed in the upper portion of the returning cavity, a conveying assembly is arranged in the returning cavity, a vibrating screen assembly is arranged below the crushing assembly and slidably connected to the side wall of the processing box, a stirring assembly is arranged below the vibrating screen assembly and slidably connected to the side wall of the processing box, and a discharging plate is arranged below the stirring assembly. The discharging plate is fixedly connected to the box wall of the machining box, a discharging opening is formed in the bottom of the machining box, and a discharging assembly is arranged in the discharging opening. The device is simple to operate, is driven by the motor, reduces manual operation steps, simplifies tedious steps of material mixing, and is simple and convenient to operate.

The invention relates to the technical field of fuel cells, and particularly discloses a preparation method of a fuel cell graphite composite plate and the graphite composite plate prepared by the preparation method. The preparation method of the fuel cell graphite composite plate comprises the following steps: S1, raw material granulation: weighing 201 + / -10 parts of graphite composite powder, uniformly spreading the graphite composite powder on a flat plate, drying at 90-150 DEG C for 10-30 minutes, cooling, and crushing to prepare composite powder particles with the particle size of 200 + / -100 meshes; and S2, uniformly spreading the prepared composite powder particles in a mold, carrying out low-pressure prepressing during mold pressing, carrying out secondary material distribution on a gas flow field side, and finally carrying out hot press molding to prepare the fuel cell composite graphite plate. The graphite composite plate for the fuel cell can be used for preparing the fuel cell, and has the advantages of low contact resistance with carbon paper and high conductivity; in addition, the preparation method has the advantages that material distribution is convenient, and the adverse effect of contact resistance of the composite plate and the membrane electrode on the performance of the fuel cell is reduced.

The invention relates to the technical field of pulverizers, and discloses a waste plastic pulverizer, comprising a box body, a pulverizing roller, and a driving structure. Two or more pulverizing rollers are symmetrically and rotatably installed in the box body. The driving structure is arranged at both ends of the pulverizing rollers and drives the pulverizing rollers to rotate. A cooling chamber and a steam chamber are coaxially provided in the pulverizing roller. The diameter of the cooling chamber is larger than the diameter of the steam chamber. A filter ring that only allows water vapor to pass through is arranged between the cooling chamber and the steam chamber. Pure water is introduced into the cooling chamber. A plurality of nozzles connected to the steam chamber are also arranged on the surface of the pulverizing roller, and a safety valve is arranged on the nozzle. When the surface temperature of the pulverizing roller rises, the pure water in the cooling chamber absorbs heat and evaporates, so that the surface temperature of the pulverizing roller is reduced and maintained within a reasonable range, thereby avoiding equipment damage caused by overheating, and preventing local overheating of the plastic and melting, thereby ensuring the pulverizing quality, and preventing the plastic from being deformed or adhering to the equipment due to high temperature.

The invention relates to the technical field of mining area soil treatment and remediation equipment, in particular to mining area soil heavy metal pollution treatment and remediation equipment. Comprising a carriage; the exhaust port is formed in the inner wall of the compartment; the outer wall of the material conveying device is fixedly connected with the inner wall of the carriage; the bottom end of the screening device is fixedly connected with the inner wall of the carriage; the outer wall of the adding device is fixedly connected with the inner wall of the compartment, the functions of waste soil and waste residue conveying, screening, crushing, soil conditioner adding for treatment and remediation, discharging and the like are integrated, the waste soil and waste residues in the mining area can be continuously treated in the moving process, the working efficiency is greatly improved, and the labor intensity of workers is reduced. The operation time and the labor cost are reduced, all the devices work cooperatively, through cooperation of an external power source and a control system, automatic operation of the equipment is achieved, manual intervention is reduced, and the accuracy and stability of operation are improved.

The invention provides multistage mesoporous carbon and a preparation method thereof, and belongs to the technical field of carbon materials. The preparation method comprises the following steps: mixing a first soluble carbon source, a pore-forming agent, an alcohol solvent and water, carrying out ultrasonic spraying-freezing treatment on the obtained first soluble carbon source solution, and then carrying out first curing treatment to obtain a first precursor; coating the surface of the first precursor with an aqueous solution of a second soluble carbon source, and freezing to form a coating layer on the surface of the first precursor to obtain a second precursor; and mixing the second precursor with a salt solution, and carrying out ultrasonic spraying-cracking carbonization treatment on the obtained second precursor feed liquid to obtain the multistage mesoporous carbon. The multistage mesoporous carbon with excellent comprehensive performance can be prepared by adopting a direct spray cracking method, the production efficiency is high, and the cost is low.

This invention discloses a method for preparing high specific surface area cerium phosphate nanoparticles. The modified corn starch in this invention exhibits good water solubility, resulting in a solution with good suspension and stability after dissolving in water. This suspension stability provides a spatial carrier for the formation of cerium phosphate nanoparticles. A network structure is formed through hydrogen bonding between the molecular weight chains of the modified corn starch, allowing control over the uniformity of cerium phosphate particle size. Different specific surface area values ​​of cerium phosphate can be controlled by adjusting the concentration of the modified corn starch. The modified corn starch can be removed through subsequent high-temperature sintering and washing, ultimately yielding high-purity cerium phosphate nanoparticles. These nanoparticles possess uniformity and high specific surface area, making them suitable for applications in electrode materials, adsorbent materials, luminescent materials, and polymer nanofillers.

The present invention relates to the field of edible oil processing equipment, and discloses a peanut oil blank steaming pot, which comprises: a steaming mechanism used for storing and steaming materials so as to complete softening and sterilization work of peanuts; the material spreading mechanism is arranged in the cooking mechanism and is used for pushing up the cooked materials to replace the materials in contact with the cooking mechanism, so that the problem of adhesion caused by long-time cooking is avoided, and meanwhile, the materials are uniformly in contact with the cooking mechanism; the screening mechanism is arranged on the upper side of the cooking mechanism, and the screening mechanism comprises a shaking assembly and a connecting assembly. According to the invention, through a scraping plate, a material turning plate I and a material turning plate II which are obliquely arranged in the material spreading mechanism, uniform turning of materials is realized, the materials are ensured to be fully heated in the cooking process, the phenomena of wall adhesion and local overheating are avoided, the cooking uniformity and efficiency are greatly improved, an ideal pretreatment state is provided for subsequent squeezing, and the production cost is reduced. Therefore, the oil yield and the oil quality are improved.

The invention relates to molybdenum alloy composite powder with a micro-nano multi-scale configuration and a preparation method of molybdenum alloy, MoO2 powder, Ti3Al and TiC are mixed, ground and spray-dried to obtain precursor composite powder, the precursor composite powder is subjected to high-temperature reduction to obtain the molybdenum alloy composite powder with the micro-nano multi-scale configuration, then cold isostatic pressing blank pressing is performed, and the molybdenum alloy composite powder with the micro-nano multi-scale configuration is obtained. And then vacuum hot pressed sintering is conducted at the high temperature, and the molybdenum alloy sintered blank of the micro-nano multi-scale configuration is obtained. The layered secondary phase is introduced, the secondary phase provides a confined growth space for molybdenum particles in the powder reduction process, the particle size of the powder is effectively reduced, the molybdenum alloy composite powder of the micro-nano multi-scale configuration is obtained, the nano molybdenum particles are preferentially molten in the high-temperature sintering process, sintering densification is promoted, and the sintering temperature is lowered. The interface bonding relation between a secondary phase and a matrix is improved, the structure of the obtained molybdenum alloy sintered blank is more uniform, the recrystallization temperature of the molybdenum alloy is increased, and the strength of the molybdenum alloy at the ultrahigh temperature is remarkably improved.

The invention discloses a garbage crushing, pulping and impurity removing all-in-one machine which comprises a connecting frame, two sets of crushing wheels are rotationally installed in the connecting frame, a first necking hopper is installed on the lower surface of the connecting frame in a communicating mode, a refining and smashing mechanism is installed on the lower surface of the first necking hopper in a communicating mode, and a pulping and impurity removing mechanism is installed on the outer surface of the lower half portion in the refining and smashing mechanism in a sliding and inserting mode. The pulping and impurity removing mechanism is fixedly installed on the outer surfaces of the four sets of supporting columns, so that the pulping and impurity removing mechanism is erected among the supporting columns, and the supporting columns are fixedly installed at the four corners of the lower surface of the connecting frame. Through the design of the refining crushing mechanism, garbage waste can be rotationally crushed between two crushing discs, the garbage waste can be more uniformly crushed by adjusting the distance between the discs, crushed particles can be kept consistent, the subsequent pulping and impurity removing efficiency is improved, and the practicability is high. And the uniform particles are beneficial to subsequent treatment steps such as dissolution, impurity removal and organic matter extraction.

The invention belongs to the technical field of dibromohydantoin production, and particularly provides a dibromohydantoin synthesis method which comprises the following steps: S1, preparing a raw material aqueous solution, namely respectively mixing dimethyl hydantoin, sodium bromide and liquid caustic soda NaOH with deionized water to form a dimethyl hydantoin aqueous solution, a sodium bromide aqueous solution and a liquid caustic soda NaOH aqueous solution; s2, premixing the raw material aqueous solution, namely mixing the aqueous solution of dimethyl hydantoin, sodium bromide and caustic soda liquid NaOH prepared in S1 to obtain a premix; s3, electrochemical in-situ bromination reaction: introducing the premix into a micro-channel reactor provided with an electrolysis electrode, and applying current to the premix to obtain a dibromohydantoin initial solution; and S4, crystallizing, separating and drying the product, carrying out cooling crystallization through a three-stage stepped cooling method to obtain a dibromohydantoin crystal, carrying out centrifugal separation to obtain a dibromohydantoin wet product, and then drying to obtain a dibromohydantoin finished product. The method can improve the generation stability and the product quality of the dibromohydantoin.

The present application relates to the field of environment-friendly materials and its preparation technology, and particularly relates to a degradable environment-friendly paper cup interior coating and a preparation method thereof. The method comprises the following steps: firstly, synthesizing polymerizable quaternary ammonium salt surfactant (RPKO-X), and then introducing the polymerizable quaternary ammonium salt surfactant and a bio-based polymer solution into a polyacrylate molecular chain by a redox initiation polymerization method, so as to obtain a degradable acrylate emulsion for paper cup interior coating. By introducing the hydrophobic monomer RPKO-X with emulsifier characteristics, a stronger crosslinking network is formed, which can significantly improve the water resistance and oil resistance of the coating. Meanwhile, by introducing the bio-based material polyvinyl alcohol 2688, the environmental friendliness of the coating is enhanced, and the rapid degradation of the coating after use is promoted. By using the redox initiation polymerization system, the method is simple to prepare, can be prepared under mild conditions, and the emulsion particle size is uniform and stable.

The invention relates to a grease deoxidation catalyst with excellent high-temperature catalytic activity and a preparation method and application thereof.The grease deoxidation catalyst takes nickel nitrate as an active component, cobalt nitrate as an auxiliary agent and titanium dioxide as a carrier, the titanium dioxide is of a hydrophilic and oleophylic type with the size of 5-10 nm, and the particle size of the catalyst is 1-10 nm. The bifunctional catalyst is prepared by combining bimetal and a titanium dioxide carrier through a one-step method, and the biofuel is prepared by deoxidizing oxygen-containing grease in an inert gas environment. Compared with the prior art, the preparation method provided by the invention has the advantages that the high-temperature activity of the catalyst and the dispersion degree of metal are improved, the operation flow is few, the preparation period is short, no solvent is used in the process, and the prepared grease deoxidation catalyst shows excellent high-temperature activity on oxygen-containing grease deoxidation isomerization reaction in a non-hydrogen atmosphere; and the metal nickel and cobalt load dispersity is higher, and the preparation method is simple and easy to implement.