11results about How to "Efficient process flow" patented technology

The invention relates to a preparation method of an energy-saving zinc-aluminum-magnesium alloy coating, which comprises the following steps: sequentially depositing a pure magnesium coating with the average thickness of 10-50 microns, a pure zinc coating with the average thickness of 200-300 microns and a pure aluminum coating with the average thickness of 50-100 microns on the surface of a pretreated cold-roll steel plate by adopting a cold spraying technology to obtain a coated steel plate; and then the coated steel plate is subjected to heat treatment at the temperature of 250-450 DEG C, zinc powder particles in the middle zinc coating start to diffuse at the interface after reaching the recrystallization temperature, crystal grains at the interface are nucleated and grown again, and finally zinc-magnesium, zinc-aluminum and zinc-aluminum-magnesium alloy coatings are formed. The technological process is simple and efficient, and the interface bonding strength of the prepared zinc-aluminum-magnesium alloy coating is good.

The invention provides a method for double-circulation recovery of a waste lithium battery positive electrode material based on a low-viscosity deep eutectic solvent, and belongs to the technical field of recovery and regeneration of waste lithium ion battery materials. Based on a eutectic system of 1-butyl-3-methylimidazolium chloride and oxalic acid, the viscosity of the deep eutectic solvent is improved through a non-solvated diluent, so that the ion leaching efficiency and the solid-liquid separation efficiency are improved, water is added into the leachate to induce precipitation of an oxalate precursor, and dehydration is performed to realize regeneration of the deep eutectic solvent. The comprehensive recovery efficiency of the low-viscosity deep eutectic solvent to lithium, nickel, cobalt and manganese is 90% or above, the low-viscosity deep eutectic solvent can be repeatedly used, the problem that the deep eutectic solvent cannot be used for multiple times is solved, the investment cost of the deep eutectic solvent in lithium battery recovery is reduced, secondary pollutants in the recovery process are avoided, and the method is suitable for industrial production. Good application prospects are realized.

The invention discloses a method for separating rare earth and fluoroaluminum in a high-fluoroaluminum and low-rare-earth-content material, and belongs to the field of rare earth hydrometallurgy. Aiming at the technical problems of poor selectivity and easiness in emulsification when the materials are treated by an existing single extraction system, a five-component synergistic extraction system is adopted, a mixed extraction agent is prepared according to the volume ratio of P204: P507: TBP: sec-octanol: diluent, and after hydrochloric acid pretreatment and ammonia water saponification, three-stage to six-stage counter-current extraction is carried out on the mixed extraction agent and the pretreated material liquid subjected to pH regulation. Rare earth is selectively extracted into an organic phase, fluorine and aluminum are enriched in raffinate, and efficient separation is achieved. And the rare earth-loaded organic phase is subjected to reverse extraction with high-concentration hydrochloric acid to obtain a concentrated rare earth solution, and trace rare earth in raffinate can be recovered through oxalic acid precipitation. Through the synergistic effect of specific components, the separation selectivity is remarkably improved, extraction emulsification is effectively avoided, stable operation of the process is guaranteed, and the method is particularly suitable for efficient treatment of complex high-fluorine-aluminum low-rare-earth materials.

This invention provides a method for preparing silicon carbide using waste granite powder and conductive carbon black, comprising the following steps: S1, mixing waste granite powder and conductive carbon black evenly to form a mixture; S2, ball milling the mixture and sieving it to obtain a refined mixture; S3, placing the refined mixture into a Joule apparatus and sintering it to prepare a multiphase composite powder; S4, calcining the multiphase composite powder at high temperature and then alkali washing to obtain silicon carbide powder. This invention achieves high-value recycling of waste granite powder, solving the problems of high energy consumption and long cycle time in traditional silicon carbide preparation processes, and avoiding the problems of large land occupation and significant pollution from the accumulation of building material waste. This invention aligns with the concept of green and low-carbon development, turning waste into treasure. By designing different raw material ratios and sintering parameters, different types of silicon carbide products can be prepared, creating economic benefits while controlling pollution.

The invention discloses an anti-corrosion and high-weather-resistant alloy resin tile and a preparation process thereof. The preparation process comprises the following steps: S1, preparing a basic composite material; s2, adding vanadium oxide and zinc oxide composite nanoparticles prepared by a sol-gel method into the basic composite material; s3, introducing a dynamic cross-linked fluorosilicon-based polymer, and preparing a surface layer functional material through a dynamic cross-linking technology; s4, forming a multi-layer structure base material; s5, preparing a multi-layer co-extrusion tile material; s6, the interlayer binding force of the multi-layer co-extrusion tile material is enhanced through the ultrasonic activation bonding technology; s7, depositing a fluorinated graphene nano film by using a plasma enhanced chemical vapor deposition technology; and S8, crack detection and aging state real-time sensing are completed by combining the conductive polythiophene composite layer embedded in the bottom layer with an intelligent monitoring module. The preparation of the corrosion-resistant and high-weather-resistant alloy resin tile is realized by utilizing a bio-based material, multi-layer co-extrusion and an intelligent monitoring technology.

The invention relates to a gallium oxide fiber and a preparation method thereof. The preparation method of the gallium oxide fiber comprises the following steps: coating a substrate with gallium-based liquid metal; oxygen is introduced to heat the gallium-based liquid metal, and the heating temperature is smaller than or equal to 200 DEG C; according to the method, gallium oxide is taken as a raw material, gas is introduced for a heating reaction, the gas is selected from at least one of hydrogen, air, oxygen and inert gas, the reaction temperature ranges from 300 DEG C to 1100 DEG C, the heating rate ranges from 1 DEG C / min to 5 DEG C / min, and the reaction time ranges from 0.5 h to 6 h. According to the preparation method, the gallium-based liquid metal serves as a precursor, after oxygen pretreatment is conducted on the gallium-based liquid metal, the gallium oxide fibers of different crystal phases can be selectively obtained by adjusting and controlling the atmosphere, temperature and time of heating reaction, and the preparation method is simple in technological process, efficient, low in cost and suitable for large-scale production.

The invention relates to a large-scale preparation method of glucosamine chelated calcium sulfate and glucosamine sulfate high-purity products from heavy metal polluted squid cartilage. The method comprises the following steps: by taking squid cartilage polluted by heavy metals in different sea areas as a raw material, firstly removing chondroprotein and mucopolysaccharide, and completing deacetylation reaction to obtain squid cartilage chitosan with the deacetylation degree of more than or equal to 90%; then squid cartilage chitosan is degraded into squid cartilage glucosamine, after the hydrolysis reaction is finished, stirring heat dissipation is conducted while a saturated calcium hydroxide solution is used for stirring chelation reaction, and then metal precipitates are further removed through a low-temperature centrifugation method; and performing cation exchange chromatography / resin fractionation on the supernate to obtain a glucosamine chelated calcium component and a glucosamine component, and then obtaining glucosamine chelated calcium sulfate and glucosamine sulfate high-purity products with the content of more than or equal to 95%. The method is wide in application range, is not influenced by regional sources of the squid cartilage raw materials and heavy metal pollution conditions of the squid cartilage raw materials, and has good preparation effects.

The application relates to an integrated non-alkaline gel zinc-air battery and a preparation method thereof, and belongs to the technical field of zinc-air batteries. The battery comprises a zinc negative electrode, an air positive electrode, a gel electrolyte and a packaging body. The gel electrolyte is formed by in-situ gelation of a liquid precursor containing a non-alkaline zinc salt solution and a gelling agent in the packaging body, so that an integrated close contact structure is formed between the electrode and the electrolyte. The application solves the problems of easy carbonation failure and electrode corrosion of a traditional alkaline electrolyte through a non-alkaline system, and significantly improves the long-term stability and cycle life of the battery in air. Meanwhile, the process combining liquid infusion and in-situ gelation solves the problems of poor solid-state electrolyte interface contact and easy leakage of a liquid electrolyte, realizes low interface impedance and high ion transmission efficiency. The method is simple in process, does not need a crosslinking agent, and can be completed through heating, stirring and cooling steps, is suitable for large-scale production, and has high safety and excellent electrochemical performance.

The invention discloses a submerged super-amphiphobic polymer porous material as well as a preparation method and application thereof, and relates to the technical field of material preparation. The material is prepared from a polymerization system consisting of styrene, divinyl benzene, a hydrophilic compound, a stabilizer, an oil-soluble initiator, a water-soluble initiator, water and Span80. According to the method, the polymerization reaction can be completed only under a single heating condition in the preparation process, so that the production period is greatly shortened, the operation difficulty and cost are reduced, and the preparation process becomes more efficient. Benefited from the rough structure and hydrophilic-hydrophobic chemical components on the surface of the prepared porous material, the material is endowed with the submerged super-amphiphobic performance, the stable oil-in-water emulsion and water-in-oil emulsion can be separated from the surfactant, and the method has important practical application value.

The application discloses a non-fibrillated Lyocell fiber and a preparation method and application thereof, and belongs to the technical field of functional fiber preparation. The application realizes that the prepared non-fibrillated Lyocell fiber has good anti-fibrillation performance and good mechanical performance by the following steps: high-voltage rotating electrostatic field is applied in a dry air section spinning process, the application direction of the high-voltage rotating electrostatic field is perpendicular to the spinning direction, the electric field strength is 1-10 kV / cm, and the electric field rotating speed is 70-90 r / min; high-voltage rotating electrostatic field is applied in a first coagulation bath process, the application direction of the high-voltage rotating electrostatic field is perpendicular to the spinning direction, the electric field strength is 3-15 kV / cm, and the electric field rotating speed is 90-120 r / min. In addition, the operation is simple, and the application is more suitable for industrial use.

The application belongs to the technical field of metal-organic framework materials and gas membrane separation, and specifically discloses a Cu-BA-AD and a preparation method thereof, a Cu-BA-AD mixed matrix membrane and application thereof. The application adopts a microwave-assisted synthesis method, and through synergistically regulating a microwave reaction time, a reaction temperature and a precursor concentration, a synthesis cycle is greatly shortened to 1 minute, and continuous gradient regulation of Cu-BA-AD particle sizes in the range of 1.2 mu m to 100 nm is realized. The obtained Cu-BA-AD nanoparticles have regular morphologies and smaller sizes, and a specific surface area is between 550 m 2 / g. When the Cu-BA-AD nanoparticles are used as fillers to prepare a mixed matrix membrane, the interface compatibility can be significantly improved, and the separation flux and selectivity of CO2 / CH4 can be greatly improved.