60results about How to "Process condition control" patented technology

The invention discloses a method and system for recovering lithium from a waste lithium iron phosphate battery. The method comprises the following steps that a positive plate is disassembled from thewaste lithium iron phosphate battery; a binder in the positive plate is removed, valuable metal elements in the positive plate are leached by an acid solution, and an acidified leaching solution is obtained; ultrafiltration treatment is carried out on the acidified leachate by using an ultrafiltration membrane; by using a nanofiltration membrane technology, lithium ions in the acidified leachate are separated from other cations different from lithium ions, a solution containing lithium and a solution containing other cations are obtained, and then a reverse osmosis technology is adopted for concentration and enrichment correspondingly, wherein the other cations comprise iron ions; and a lithium precipitant is adopted to precipitate and separate lithium ions in the lithium-containing solution, alkaline substances are adopted to precipitate and separate iron ions in the solution containing other cations, and lithium recovery is realized. According to the method and system, the ultrafiltration-nanofiltration-reverse-osmosis combined technology is adopted, and the method and system have the beneficial effects of simple process, environmental protection, less acid and alkali consumption, good and stable membrane separation effect and the like.

The invention discloses a method for preparing strontium titanate nanometer powder with one-dimension structure, which consists of procedures of preparing the oxyhydroxide precipitate of titanium and the deionized aqueous solution of barium acetate as reaction materials, adding a feasible quantity of potassium hydroxide to promote crystallization, and appending a suitable viscosity of patterned vertical alignment polymer surfactant to control the feature; under the temperature of 100-150 DEG C, strontium titanate nanowire and a branched crystal structure are obtained after a hydrothermal reaction. The craftwork of the invention is simple; the micro feature of the product is easy to control, the pollution is free; the cost is low; a large-scale production is suitable. The quality of the crystallization of the prepared product is stable; the specific surface is big. A broad application prospect is possessed in fields of micro electronic devices, EO devices, storage devices, oxygen sensors, photocatalyst, and solar battery, etc.

The invention discloses a method and system for recovering lithium and manganese from a waste lithium manganate battery. The method comprises the following steps that a positive plate is disassembledfrom the waste lithium manganate battery; a binder in the positive plate is removed, valuable metal elements in the positive plate are leached by acid dissolution, and acidified leachate is obtained;ultrafiltration treatment is carried out on the acidified leachate by using an ultrafiltration membrane; by using a nanofiltration membrane technology, lithium ions in the acidified leachate are separated from other cations different from lithium ions, a solution containing lithium and a solution containing other cations are obtained, and then a reverse osmosis technology is adopted for concentration and enrichment correspondingly, wherein the other cations comprise manganese ions; and a lithium precipitant is adopted to precipitate and separate lithium ions in the lithium-containing solution,and alkaline substances are adopted to precipitate and separate manganese ions in the solution containing other cations, so that the recovery of lithium and manganese is realized. According to the method and system, the ultrafiltration-nanofiltration-reverse osmosis combined technology is adopted, and the method and system have the beneficial effects of simple process, environmental protection, less acid and alkali consumption, good and stable membrane separation effect and the like.

The invention provides a wood waterproof agent adopting a silicone emulsion, a method for preparing the wood waterproof agent, and a method for preparing waterproof wood by utilizing the wood waterproof agent. The method for preparing the wood waterproof agent comprises the following steps: first, preparing a silicone oil emulsion primary liquid which contains hydroxyl silicone oil, hydrogen-containing silicone oil, a surfactant, nano-silicon dioxide, micron-silicon dioxide and water; then, diluting the silicone oil emulsion primary liquid into silicone oil emulsions of different concentrations; and finally, adding a catalyst for uniform dissolution and mixing. When the silicone oil emulsion wood waterproof agent provided by the invention is utilized for vacuum-pressurization pretreatment of wood, the waterproof performance and size stability of the wood can be improved, the hygroscopicity of the wood can be reduced, and the contact angle between the treated wood surface and water is larger than 140-150.

The invention discloses a process for extracting pachyman from poria coccus wolf. The process comprises the following steps: (1) selecting a poria coccus wolf raw material, and conducting ultrafine grinding to obtain poria coccus wolf coarse powder; (2) adding water into the poria coccus wolf coarse powder for soaking, and placing the soaked poria coccus wolf coarse powder in 40000 Hz ultrasonic waves to be treated for 20-25 min; (3) conducting water bathing and then conducting centrifugal separation; (4) conducting enzymolysis separation by adopting a compound enzyme to obtain a filtrate; (5) conducting protein precipitation and filtration, and centrifugally collecting a supernate; (6) concentrating a pachyman extract to be 10 to 20% of the original volume to obtain a pachyman concentrate, and conducting spray drying to obtain coarse pachyman; (7) conducting ultrafiltration, then conducting column chromatography to obtain purified pachyman, and conducting freeze drying so as to obtain the pachyman. According to the process, an ultrasonic-assisted extraction method is utilized, the process steps are simple, the pachyman leaching rate can be obviously increased, the extracted pachyman is low in possibility of stereostructure damage and high in biological activity, and the advantages that the leaching time is shortened, the extraction conditions are mild, and the reaction product is free of toxic or side effect are achieved.

The invention discloses a continuous arsenic removal catalyst for industrial tail gas purification. The continuous arsenic removal catalyst is prepared by mixing a solution of an active component, raw powder of a molecular sieve and a binding dispersant and moulding by extruding, wherein the molecular sieve serves as a carrier, the active component is a cupric salt, the carrier is a molecular sieve of 13X-grade particles, the effective micropore size of the molecular sieve is 0.8-1.5nm, and the volume ratio of micropores is over 80%. The continuous arsenic removal catalyst is prepared as follows: weighing the raw powder of the molecular sieve, stirring, adding the solution of the active component, adding the binding dispersant after the material is wetted, mixing the materials uniformly, molding by extruding, drying and calcining. The continuous arsenic removal catalyst is used for removing hydrogen arsenide from tail gas of calcium carbide, tail gas of yellow phosphorus and other atmospheres. Hydrogen arsenide is subjected to hydration reaction after being subjected to catalytic oxidation, and then is discharged in the form of arsenic acid or arsenious acid. The active component of the continuous arsenic removal catalyst does not change obviously before and after catalytic oxidation, and the requirement that CO in tail gas serves as a product with high additional value can be met.

The invention relates to a leaching method for indium in a waste liquid crystal panel and a corresponding leaching agent, and belongs to the technical field of solid waste recycling. Eutecticevaporate ionic liquid formed through choline chloride and diacid substances serves as the leaching agent, after a liquid crystal panel glass substrate is crushed into powder with the granularity of 50-200 meshes, the powder is immersed through the eutecticevaporate ionic liquid, the immersing temperature is 50-90 DEG C, the immersing time is 12-48 h, the solid and liquid mass ratio of the glass powder to the eutecticevaporate ionic liquid is 1:0.5-1:2, and the indium leaching rate is higher than 95%. The leaching method has the advantages that the leaching agent preparing method is simple, the leaching agent is environment-friendly and capable of being circularly used, the leaching method operation technology is simple, the indium leaching rate is high, and selectivity is high, and an effective method for recycling indium from the waste liquid crystal panel is provided.

This invention aims at providing a plasma lipid composition selective adsorption separation porous membrane carrier materials, preparation methods and related applications. The porous membrane carrier used the average pore size of 0.05 m ~ 100 u medical nonwoven polymer as the starting raw materials, through a total of 60 Co-ray irradiation grafting copolymerization polyacrylic acid surface modification, it further fixed the cholesterol ligand by carboxyl and containing 0 to 10 carbon atoms hand cholesterol arm of covalent ligand, finally get the polymer porous membrane carrier materials of plasma lipid selective adsorption separation ability. The invention related to the preparation method is simple, safe, effective and easy to promote large-scale production. With good material blood compatibility, it can be used as a plasma lipid composition adsorption separation of hyperlipidemia, dynamic perfusion of clinic high plasma patients blood purification and waste blood separation renewable auxiliary materials.

The invention discloses a preparation method of trimethyl borate. The method comprises the following steps of: (1) heating and dehydrating a boric acid solid to prepare metaboric acid and pyroboric acid solids; (2) adding the metaboric acid and pyroboric acid solids which are obtained in the step (1) to methanol to make the mixture react under a stirring state; (3) heating and distilling the reaction solution obtained in the step (2) to obtain an azeotrope solution of the methanol and the trimethyl borate, distilling and cooling raffinate to obtain boric acid; and (4) separating the azeotrope solution of the methanol and the trimethyl borate, which is obtained in the step (3), to obtain a trimethyl borate product. In the invention, by firstly heating and dewatering the boric acid to prepare the metaboric acid and the pyroboric acid and then making the metaboric acid and the pyroboric acid react with the methanol to prepare trimethyl borate, the reaction speed is accelerated, the conversion per pass is improved, the reaction conditions are mild and no risks exist.

The invention discloses anti-bacterial polythene foamed plastics. The anti-bacterial polythene foamed plastics is made from the following raw materials in percentage by mass: 80.5 to 96.5 percent of base material, 0.5 to 5 percent of silver-plated fibers, 0.5 to 2 percent of cross linking agent, 2 to 10 percent of foaming agent and 0.5 to 2.5 percent of foaming promoter, wherein the base material comprises two polymers, namely polythene and ethylene-vinyl acetate copolymer. The anti-bacterial polythene foamed plastics has high antibacterial property, mechanical property and wide application range. The invention also discloses a preparation method for the anti-bacterial polythene foamed plastics. Process conditions of the method are easy to control; equipment is simple and convenient to operate; and the method has low requirement on mechanical equipment and is suitable for industrial production.

The invention discloses an intestinal absorption promoting liraglutide salt for preparing oral enteric-coated preparations, and belongs to the field of medicines. The liraglutide salt is selected from salts formed through reacting liraglutide with sodium caprate, potassium caprate, benzene sulfonic acid, sodium dodecyl benzene sulfonate, potassium dodecyl benzene sulfonate, sodium octanoate, potassium octanoate, sodium laurate, potassium laurate, sodium oleate and potassium oleate.

The invention discloses a high-chroma dry type hawthorn fruit wine and a preparation method thereof. The preparation method comprises the following steps of selecting purple-pulp hawthorn fruit with high content of anthocyanin; cleaning fruit of hawthorn wine, crushing, freezing, impregnating by microwaves for a short time, adding sugar to adjust, and fermenting at low temperature in a light shielding way; adding high-chroma hawthorn fruit juice, fermenting, aging, and filtering, so as to obtain the high-chroma dry type hawthorn fruit fermenting wine. The prepared high-chroma dry type hawthornfruit wine has the advantages that the color, fragrance, taste, mouth feel, and acidity are mutually coordinated; the mouth feel is soft, the rich nutrients are contained, the edible and health-carefunctions can be simultaneously realized, the high-chroma dry type hawthorn fruit wine is suitable for the public taste, and the requirement on higher-quality foods by people can be met.

The invention discloses a method for removing sulfate ions by a high-temperature membrane method. The method comprises the following steps: pretreating high-temperature electrolyzed light salt brine;performing dechlorination treatment on the high-temperature electrolyzed light salt brine in the pretreatment process; adjusting the pH value of the high-temperature electrolyzed light salt brine; finely adjusting the temperature of the high-temperature electrolyzed light salt brine to slightly reduce the temperature of the high-temperature electrolyzed light salt brine; and then carrying out membrane separation treatment, crystallizing and separating the saline water with high sulfate ion concentration after membrane separation, and concentrating the saline water with low sulfate ion concentration after membrane separation or returning the saline water with low sulfate ion concentration to a saline water process for salt melting. According to the method, sulfate radicals in the electrolyzed light salt brine are removed through a high-temperature nanofiltration process, the treatment temperature of the light salt brine treated by the system is high, desulfurization acid radical treatment can be carried out without cooling to 45 DEG C or below, and the use amount of cooling water is remarkably reduced; and in addition, the temperature of filtrate obtained after membrane filtration is high, heat consumption during MVR evaporation or salt melting is reduced, energy consumption is reduced in the MVR concentration process, and energy is saved.