21results about How to "Achieve high value" patented technology

The invention discloses a phase change energy storage waterborne polyurethane nanofiber membrane and a preparation method thereof. Lignin-based phase change microcapsules are prepared by combining ultraviolet crosslinking with lignin shell packaging, and then the nanofiber membrane containing the phase change microcapsules is prepared through an electrostatic spinning technology. And finally, constructing the waterborne polyurethane phase change fiber membrane with asymmetric wettability through a low-temperature plasma technology. According to the invention, lignin is self-assembled to form nanoparticles, and ultraviolet light induces free radical polymerization to form a polymer film, so that the packaging capability of the phase change material is improved. The phase change microcapsule prepared by the method is high in packaging efficiency and excellent in phase change performance, the preparation process is green and environment-friendly, the technological operation is simple, the temperature of the prepared phase change energy storage waterborne polyurethane nanofiber membrane conforms to the comfortable temperature range of a human body, and the phase change energy storage waterborne polyurethane nanofiber membrane has excellent temperature regulation, waterproof and moisture permeable performance and is suitable for being used in the field of water treatment. Good application prospects are realized in the field of functional textiles with functions of intelligent temperature regulation, water resistance and air permeability and the like.

The invention relates to the technical field of wastewater treatment, in particular to a method for recovering copper from industrial acid wastewater. The method comprises the following specific steps: sulfur concentrate activation: grinding, acid leaching, washing and drying blocky sulfur concentrate in sequence for later use; selective recovery of copper: taking a certain amount of copper-containing industrial acidic wastewater, adding the treated sulfur concentrate into the zinc industrial acidic wastewater, and uniformly stirring to obtain mixed slurry; and solid-liquid separation is conducted, specifically, a certain amount of flocculating agent is added into the obtained mixed slurry for solid-liquid separation, and supernate and copper-containing concentrate are obtained. The copper grade in the copper-containing concentrate is not lower than 10%, and the copper-containing concentrate can be directly sold or sold after simple flotation. The method has the advantages of simple and easy process, low equipment requirement, convenience in operation, wide application range and the like, and has good social benefits and economic values.

The invention relates to a dynamic covalent cross-linking material based on a thermoplastic polymer and a preparation method and application thereof, and belongs to the technical field of polymer materials.The preparation method of the dynamic covalent cross-linking material comprises the following steps that S1, a mixture containing the thermoplastic polymer, an anhydride substance and an initiator is subjected to first melt blending, a melt blend is obtained; s2, uniformly mixing the melt blend, a cross-linking agent and a catalyst, and carrying out second melt blending to obtain a dynamic covalent cross-linking material based on the thermoplastic polymer; the cross-linking agent is a diglycidyl ether epoxide. The preparation method of the dynamic covalent cross-linking material provided by the invention is simple in process and short in preparation period, can be used for converting thermoplastic macromolecules and waste thermoplastic macromolecules into dynamic cross-linking materials with excellent mechanical, creep-resistant, heat-resistant and chemical solvent-resistant properties, realizes high value, and is suitable for industrial production.

The invention provides a method for the coordinated treatment and resource utilization of aluminum electrolysis overhaul slag and carbon slag, comprising the following steps: (1) mixing the aluminum electrolysis overhaul slag and carbon slag, crushing, ball milling, slurry mixing, pressurized alkali leaching, and introducing high-temperature water vapor and air to obtain an alkali leaching solution and an alkali leaching slag; (2) adding ozone, calcium hypochlorite, and modified polymer-grade aluminum chloride-aluminum sulfate to the alkali leaching solution in sequence, and filtering and separating; (3) washing the alkali leaching slag, and then acid leaching and settling to obtain an acid leaching solution and an acid leaching slag; (4) mixing the acid leaching solution and the alkali leaching solution treated in step (2) to carry out fluoride salt directional conversion, and separating the obtained product into a solid and a fluoride salt directional conversion liquid; (5) sending the fluoride salt directional conversion liquid obtained in step (4) to a water treatment system for treatment and then recycling it to the slurry mixing in step (1); washing and removing impurities from the solid and then drying it; the method can simultaneously realize the high-value utilization of valuable elements in the aluminum electrolysis overhaul slag and carbon slag, reduce the processing cost, and improve the efficiency.

The invention discloses a comprehensive utilization method of bamboos, and belongs to the technical field of comprehensive utilization of bamboo products. According to the silicon content difference of different parts of the bamboos, the raw bamboos are separated into the bamboo green layers and the bamboo flesh for graded utilization, the bamboo green layers are used for producing high-added-value products, the bamboo flesh is used for pulping and papermaking, and efficient comprehensive utilization of the low-carbon high-silicon bamboos is achieved. Graded utilization is achieved based on natural differences of silicon contents of all parts of bamboo wood, the silicon content of a bamboo green layer is far higher than that of bamboo pulp, the bamboo green layer is rich in active ingredients, 62% or above of silicon in pulping bamboo chips can be removed from the source after stripping, the silicon content of pulping black liquor is reduced by 53% or above, and the pulping quality is improved. The core problems of equipment scaling, alkali recovery rate reduction and the like caused by silicon in the papermaking process are thoroughly solved, meanwhile, high-added-value products such as bamboo-based composite materials and functional drinks can be specifically prepared through the bamboo green layer, and bamboo meat meets the pulping and papermaking requirements due to rich fibers and low silicon content; and finally, high-value comprehensive utilization with low carbon, environmental protection and high economic benefit of the bamboo wood is achieved.

The invention relates to an aluminum and lithium co-extraction method of clay type lithium ore. The aluminum and lithium co-extraction method comprises the following steps: (1) pretreating the clay type lithium ore to obtain crushed ore; (2) the crushed ore is subjected to two-step countercurrent hydrothermal leaching, and aluminum-lithium-rich leaching liquid and leaching residues are obtained; and (3) carrying out adsorption lithium extraction on the aluminum-lithium-rich lixivium to obtain a lithium-rich solution and an adsorption raffinate, carrying out post-treatment on the lithium-rich solution to obtain a lithium salt product, and carrying out post-treatment on the adsorption raffinate to obtain a meta-aluminate product. The method realizes efficient separation and resource utilization of multiple components such as lithium, aluminum and the like, has high lithium salt purity and stable meta-aluminate product quality, and has the characteristics of short process, low energy consumption and suitability for industrial production.

The present invention belongs to the technical field of hydrogen peroxide preparation, and proposes a method for in-situ synthesis of H2O2 based on low-temperature plasma driven hydrogen production. The in-situ synthesis method of H2O2 uses water vapor as a hydrogen source, utilizes plasma to drive the water gas reaction to produce hydrogen, and reacts with oxygen to generate H2O2 in situ, thereby realizing the one-step generation of H2O2 from CO, O2 and water vapor in a plasma reactor. Compared with the anthraquinone method, the reaction conditions of the present invention are mild and the process flow is simple. Compared with the direct generation of H2O2 from hydrogen and oxygen, the present invention effectively avoids the explosion risk caused by the contact between hydrogen and oxygen, and at the same time realizes the resource utilization and high value of CO in industrial waste gas. In addition, the present invention can greatly improve the space-time yield of H2O2, reaching 2700 g H2O2 L ‑1 h ‑1 The above has achieved exponential growth compared to existing technologies and made significant technological progress.

The invention belongs to the technical field of food processing, and relates to a melon rind source stabilizer, an extraction method thereof and application of the melon rind source stabilizer in watermelon juice. The extraction method comprises the following steps: S1, preparing watermelon peel pulp: taking inner peels of watermelons, adding water, and crushing into the watermelon peel pulp; step S2, alkaline hydrolysis ester removal: regulating and controlling a water medium microenvironment to enable the pH value of the melon rind pulp to be 10-13, and reacting at room temperature to remove methyl ester groups; then filtering and washing in sequence to obtain watermelon peel residues; and S3, low-temperature high-pressure homogenization and vacuum freeze drying are combined. The watermelon peel source stabilizer is extracted from watermelon inner peel pulp through alkaline hydrolysis ester removal and low-temperature high-pressure homogenization combined with vacuum freeze drying treatment, has a good network framework, and is not prone to molecular chain breakage, charge shielding or dehydration shrinkage in ultrahigh-pressure sterilization, so that the stability of watermelon juice is improved, and the stability of the watermelon juice is improved. Particularly, the double-effect stability of lycopene and juice in the watermelon juice can be regulated and controlled.

The invention relates to the technical field of wastewater treatment, in particular to a method for recovering zinc from industrial acid wastewater. The method comprises the following specific steps: sulfur concentrate activation: grinding, acid leaching, washing and drying blocky sulfur concentrate in sequence for later use; selective recovery of zinc: taking a certain amount of zinc-containing industrial acidic wastewater, adding the treated sulfur concentrate into the zinc-containing industrial acidic wastewater, and uniformly stirring to obtain mixed slurry; and solid-liquid separation is conducted, specifically, a certain amount of flocculating agent is added into the obtained mixed slurry for solid-liquid separation, and supernate and zinc-containing concentrate are obtained. The zinc grade in the zinc-containing concentrate is not lower than 10%, and the zinc-containing concentrate can be sold as zinc concentrate after simple flotation. The method has the advantages of simple and easy process, low equipment requirement, convenience in operation, wide application range and the like, and has good social benefits and economic values.

The invention discloses a skeleton-supported solid waste-based cementing material and a preparation method thereof. The cementing material is prepared from the following raw materials: fire coal slag, desulfurized fly ash, iron tailings, an ion complexing agent, an exciting agent and water, wherein the main raw materials comprise the following components in parts by mass: 30 to 45 parts of fire coal slag, 5 to 10 parts of desulfurized fly ash and 50 to 60 parts of iron tailings; the ion complexing agent accounts for 0.05%-0.2% of the main raw materials, the exciting agent accounts for 2%-6% of the main raw materials, and the water accounts for 30%-50% of the main raw materials. According to the preparation method provided by the invention, the framework-supported solid-waste-based cementing material with excellent performance is prepared by taking the fire coal slag, the desulfurized ash and the iron tailings as raw materials through simple ball milling and adding a small amount of excitant and ion complexing agent under the combined action of active silicon-aluminum dissolution, iron-based hydration product density enhancement and particle framework support.

The invention provides a method for extracting lithium from lepidolite and concentration equipment, and relates to the field of battery material production. The method for extracting the lithium from the lepidolite comprises the following steps: S1, adding sulfuric acid into the lepidolite, heating to 200-300 DEG C, roasting, destroying mineral lattices through an acid leaching process, stirring, leaching and filtering to obtain silicon dioxide and a mixed sulfate solution; and S2, cooling, crystallizing and filtering the mixed sulfate solution to obtain alum and a solution containing Li < + >. According to the method for extracting the lithium from the lepidolite, a small amount of lithium and aluminum contained in the gypsum residues generated in the process of extracting the lithium from the lepidolite are recycled, the gypsum residues are deeply treated, the characteristics of amphoteric hydroxides and reagent circulation are utilized, high-valued aluminum and lithium and a green closed loop are achieved, the treatment pressure of industrial solid waste is reduced, and the production cost is reduced. The environmental pollution risk is reduced, the maximum utilization of resources is realized, and the waste discharge is reduced.

The present invention discloses a method for catalytic separation and high-value utilization of fluorine-containing organic binders of retired new energy devices, comprising the following steps: preparation of rare earth photocatalytic materials, photothermal catalytic depolymerization and stripping, acid leaching of lanthanum, low-temperature fluorine precipitation and temperature-raising phosphorus purification. The present invention adopts hydroxyl to attack the carbon-fluorine bond in the organic binder to prepare the photocatalyst, realizes one-step photothermal catalytic depolymerization of the organic binder instead of traditional mechanical crushing, sorting, strong acid and alkali leaching and other multi-step processes, not only avoids the use of toxic and harmful solvents but also directs the preparation of high-value products of toxic elements in the binder, and also realizes the effect of co-recycling of waste catalysts and retired energy devices through the directed preparation of catalyst types, providing a safe, efficient and economical solid waste disposal and new material clean synthesis method for the recycling of retired new energy devices and the manufacture of advanced materials.

The invention discloses a hard carbon material prepared based on highland barley straw and a preparation method and application thereof, and particularly relates to the technical field of negative electrode materials. Comprising the following steps: preparing highland barley straw powder; pre-oxidizing the highland barley straw powder to obtain pre-oxidized highland barley straw powder, soaking the pre-oxidized highland barley straw powder in a phosphoric acid solution, and preparing the highland barley straw powder pretreated by phosphoric acid; sequentially activating and carbonizing the highland barley straw powder pretreated by the phosphoric acid to obtain the hard carbon material based on the highland barley straw. The obtained hard carbon material has short-range ordered graphite-like microcrystals and a rich closed-pore structure, the short-range ordered graphite-like microcrystals can promote rapid and high-density de-intercalation of sodium ions, and the closed-pore structure increases storage sites and transmission space of the sodium ions, so that the hard carbon material has excellent sodium storage performance as a negative electrode material.

The utility model relates to the field of building material recovery, especially a kind of environmental protection building material recovery device with glue, including wind cylinder, the upper portion of wind cylinder is equipped with blowing assembly, wind cylinder top is equipped with cover frame, heating assembly is arranged in the middle of wind cylinder, worm is rotatably connected in the lower side of wind cylinder, first mounting plate is placed in the lower part of wind cylinder, and first mounting plate is rotatably connected with wind cylinder.The utility model integrates hot air softening, dynamic angle cutting and modularization stripping function, high-temperature polythermal air beam efficiently softens glue layer, worm and half worm wheel realize the angle accurate adjustment of cutting component, adapt to special-shaped base material, glue-removing knife and thorn roller module with quick switching respond to different adhesive strength glue layer, improve separation efficiency and purity, overall design significantly reduces energy consumption and labor cost, realizes the high-value, environmental protection recovery of waste material with glue.

The invention discloses all-recycled concrete as well as a preparation method and application thereof. The all-recycled concrete provided by the invention is prepared from the following components in parts by weight: 290 to 540 parts of cement, 1100 to 1200 parts of brick-mixed recycled coarse aggregate, 650 to 680 parts of brick-mixed recycled fine aggregate, 145 to 250 parts of water, 30 to 80 parts of steel fiber, 1.4 to 2.7 parts of polycarboxylic acid high-performance water reducing agent and 40 to 60 parts of reinforcing and toughening agent. The reinforcing and toughening agent is prepared by mixing waterborne polyurethane-epoxy resin emulsion and a synergist according to the mass ratio of (2 to 4): 1. Compared with the prior art, the full-recycled concrete prepared by the preparation method disclosed by the invention has relatively good compressive strength, splitting tensile strength, axial compressive strength, chloride ion infiltration resistance and frost resistance, and has relatively long service life.

This invention relates to the field of waste lithium battery recycling technology, specifically disclosing a method for high-value recycling of lithium cobalt oxide battery cathode materials. The method includes the following steps: adding oxalic acid, hydrogen peroxide, and nano-zirconia to the fully discharged and de-aluminum-foil-removed lithium cobalt oxide cathode material, and grinding it in a zirconia ball mill; after grinding, leaching and filtration to separate cobalt oxalate residue and lithium-containing filtrate; adding potassium fluoride to the filtrate to convert it into lithium fluoride, and then regenerating the oxalic acid using Amberlyst-15 ion exchange resin for recycling. This method achieves efficient separation, high-purity recovery, and is economical and environmentally friendly through the synergistic effect of mechanical and chemical action and reagent regeneration technology, providing a feasible path for the high-value recycling of lithium cobalt oxide battery cathode materials.

The invention discloses a method for co-producing high-purity sodium fluoride and ammonium chloride through fluorosilicic acid ammonolysis, and belongs to the technical field of fluorine chemical industry. Firstly, fluosilicic acid reacts with ammonia water to prepare an ammonium fluoride solution; secondly, sodium chloride and a sodium pyrophosphate inhibitor are added into the solution, and sodium fluoride coarse crystals and first mother liquor are obtained through programmed temperature control crystallization; then, carrying out two-stage negative pressure gradient concentration on the first mother liquor, deeply recovering sodium fluoride and crystallizing ammonium chloride; then, carrying out gradient purification on the sodium fluoride coarse crystal by absolute ethyl alcohol to obtain a high-purity product; finally, the ammonium chloride wet material is granulated into a superior chemical fertilizer through a fluidized bed, through the innovative crystallization and purification technology, the total yield of sodium fluoride is stabilized at 96.5% or above, the product purity breaks through 99.8%, meanwhile, high-value utilization of the by-product ammonium chloride is achieved, and economic and environment-friendly benefits are remarkable.

Soybean protein isolate - astragalus mongholicus glycoside composite powder and a preparation method thereof, relate to the technical field of health products. The existing astragalus mongholicus glycoside has the problems of poor stability and easy degradation when used alone. The composite powder comprises soybean protein isolate, astragalus mongholicus glycoside and malt dextrin, and the mass ratio of the soybean protein isolate, the astragalus mongholicus glycoside and the malt dextrin is 10:(0.25-1):(3-5). The method comprises the following steps: firstly, soybean protein isolate is taken, water is added, heating and stirring are conducted for dissolution, and cooling is conducted to room temperature; then, malt dextrin is added, and stirring is conducted for dispersion; then, astragalus mongholicus glycoside is added, stirring is conducted for uniformity, water is added again, and stirring is conducted until uniformity is achieved, so as to obtain a mixture; secondly, the mixture is subjected to spray drying, powder is collected, and the soybean protein isolate-astragalus mongholicus glycoside composite powder is obtained. The composite powder has the nutrition of soybean protein isolate and the activity of astragalus mongholicus glycoside, and is used for improving the stability of astragalus mongholicus glycoside.

The present application relates to solid waste resource utilization technical field, disclose a kind of methods for preparing silicon micro powder based on chlorination waste brine quenching slag in situ carbothermal reduction, method includes: S1, the molten salt chlorination waste brine quenching slag is carried out drying and ball milling treatment, and pretreatment material is obtained;S2, pretreatment material is carried out magnetic separation, and non-magnetic mixture is obtained;S3, after non-magnetic mixture and mixed acid are carried out acid dipping reaction, solid-liquid separation is carried out, and the silicon-rich filter residue containing silicon dioxide and elemental carbon is obtained;S4, after silicon-rich filter residue is washed and dried, silicon dioxide and elemental carbon in it are made to carry out carbothermal reduction reaction under inert atmosphere, and silicon micro powder product is obtained.The purity and resource utilization rate of silicon micro powder product are improved by the scheme of the present application, and high-value and clean utilization of waste water quenching slag is realized.

The utility model relates to a device for preparing a honeycomb material by using red mud, which comprises a red mud powder storage bin and a composite sintering aid powder storage bin which are respectively used for storing red mud powder and composite sintering aid powder; the mixing device is used for mixing the red mud powder from the red mud powder storage bin and the composite sintering aid powder from the composite sintering aid powder storage bin; the green body forming device is used for manufacturing the mixed powder into a honeycomb material green body, and the green body forming device comprises a first hydraulic cylinder, an upper mold, a lower mold below the upper mold, second hydraulic cylinders on the two sides of the lower mold, a third hydraulic cylinder installed on the inner wall of the green body forming device and a quantitative distributing device above the third hydraulic cylinder; the roller way conveyor is positioned between the green body forming device and the sintering device and is used for conveying the honeycomb material green body to the sintering device; and the sintering device is positioned at the tail end of the roller conveyor and is used for sintering the honeycomb material green body into a honeycomb material finished product.

The application discloses a preparation method for improving the quality of modified asphalt by using tar residue, relates to the technical field of asphalt preparation, and comprises a raw material tank, a tar residue bin, a coarse grinding machine, a first ultracentrifuge, an ammonia water underground tank, a coal tar storage tank, a plurality of second liquefied tanks, a fine grinding machine and a second ultracentrifuge. Two tar residue self-unloading centrifuges are connected to the discharge port of the raw material tank. The discharge outlets of the two tar residue self-unloading centrifuges are connected with the feed inlet of the tar residue bin. The discharge outlets of the two tar residue self-unloading centrifuges are connected with buffer bins. The method has the advantages of mild reaction conditions, low equipment requirements, low operation energy consumption, small safety risks, effective regulation and control of the polymerization degree of asphalt, and accurate improvement of the coking value and bonding performance of modified asphalt. The quality of the whole process from the raw material tar residue obtained from the inside of the raw material tank to the storage of the modified asphalt in the coal tar storage tank is closed-loop controlled, so that the stable production of high-quality modified asphalt is ensured.