26results about How to "Economical" patented technology

The invention discloses a forming method of a magnesium oxide-based carbon dioxide adsorbent suitable for large-scale preparation. The forming method comprises the following steps: calcining a magnesium-containing precursor to prepare porous magnesium oxide raw powder; the preparation method comprises the following steps: carrying out impregnation modification on magnesium oxide raw powder and an alkali metal salt solution to obtain wet mixed thick slurry, drying the slurry, and carrying out secondary calcination to obtain modified adsorbent raw powder; and mixing the raw powder with deionized water, a forming aid and the like to prepare a plastic wet material, and performing extrusion-spheronization balling, drying and calcining to obtain regular spherical adsorbent particles. The formed adsorbent prepared through the method has the advantages of being controllable in particle size, high in mechanical strength, good in adsorptive property after being formed, excellent in cycling stability and the like, can be used for CO2 chemical adsorption trapping of CO2-containing gas under the medium-temperature condition, and is good in CO2 adsorptive property, economical efficiency of the technological method and environmental protection performance, the process technology is easy to amplify, and the method is suitable for industrial production. The method is suitable for industrial large-scale production.

The invention provides a method and system for regenerating fibers from waste textiles, and relates to the technical field of textile equipment. The method comprises the following steps: firstly, slitting a waste textile raw material through a vertical crossing slitting unit to obtain a cloth piece with a preset size; then, auxiliary agent spraying and steam ageing treatment are carried out on the cloth pieces, so that cohesive force between fibers is reduced; then carrying out flexible pretreatment, gradually loosening a warp and weft yarn structure through a needling device, and carrying out preliminary opening; then, through the multi-stage opening and impurity removal step, the materials are converted into a single fiber state in combination with a material distribution mechanism; the fibers are atomized and humidified in the conveying or storage process so as to maintain the water content and the strength; then fully carding through a carding and fiber separating machine, and separating the single fibers into at least three types of long fibers, medium and short fibers and ultra-short fiber components according to the difference between the fiber length and aerodynamic characteristics; and finally, respectively collecting and packaging the fibers with different length components. According to the invention, high-valued cyclic utilization of the waste textiles is realized.

This invention belongs to the field of composite board technology, specifically relating to a method for preparing outdoor wood-plastic composite boards using household waste as raw material. The method for preparing outdoor wood-plastic composite boards using household waste as raw material is characterized by the following steps: S1, pretreatment: crushing, sorting, separating, grinding, and drying the household waste to obtain pretreated granules; S2, mixing the pretreated granules with a coupling agent and additives sequentially and evenly to obtain a mixture; S3, extruding, shaping, drawing, and cutting the mixture to obtain the outdoor wood-plastic composite board; wherein the coupling agent is polymethylene polyphenyl polyisocyanate, γ-aminopropyltriethoxysilane, and maleic anhydride. This invention uses household waste as raw material and employs a composite coupling agent system for chemical modification to eliminate the adverse effects of impurities such as aluminum foil and protein that are difficult to separate, thus improving product quality; the resulting outdoor eco-friendly wood-plastic composite board exhibits superior mechanical properties compared to products produced using traditional processes.

The invention discloses an organic fertilizer composition taking fermented sludge as a matrix. The organic fertilizer composition is prepared from a sludge matrix, a structural auxiliary material and a functional biological agent, wherein the weight ratio of each component is as follows: 45-100 parts of the decomposed sludge, 15-50 parts of the structural auxiliary material and 0.1-2.0 parts of the functional biological agent; the water content of the sludge matrix is lower than 30%, the sludge matrix is sludge subjected to harmless fermentation treatment, and the functional biological agent comprises nitrogen fixation, phosphate solubilizing, potassium solubilizing and microbial flora; the structural auxiliary material is a mixture of agricultural organic waste and an inorganic mineral conditioner. Compared with the prior art, the organic fertilizer composition with the fermented sludge as the matrix and the processing technology of the organic fertilizer composition have the advantages that the harmless degree is high, the physical property is excellent, functional viable bacteria are rich, and efficient resource utilization of the sludge is achieved.

The utility model provides a detachable box girder reinforcement cage lifting appliance storage rack, include: a plurality of support column, truss connection system, cable wind rope system, top bearing platform, top bearing platform is located in the upper portion of a plurality of support column for bearing reinforcement cage lifting frame. Storage rack adopts truss connection system and connects a plurality of support column into a whole, and is supplemented with cable wind rope system and is reinforced, forms a stable space stress frame, has improved the overall rigidity and the lateral force capacity of structure obviously, has avoided the risk of shaking and overturning because of wind load or accidental collision effectively.

This invention discloses a comprehensive method for recovering valuable metal elements from the neutralized and impurity-removed slag of lepidolite. The method involves obtaining clinker through high-temperature roasting of the slag; obtaining a lithium-containing leachate and aluminum-, calcium-, and iron-containing waste residue through alkaline leaching; extracting lithium from the lithium-containing leachate through resin purification, concentration, and precipitation; leaching the aluminum-, calcium-, and iron-containing waste residue with sulfuric acid and hydrogen peroxide to obtain calcium sulfate and an iron-aluminum-containing aqueous leachate; and recovering aluminum through extraction and ammonium-aluminum crystallization reaction to obtain iron oxide red and ammonium alum products. This method achieves comprehensive recovery of valuable elements such as lithium, iron, aluminum, and calcium from the neutralized and impurity-removed slag of lepidolite. The waste residue and wastewater generated throughout the process are properly utilized, effectively solving the problem of secondary resource utilization of lepidolite neutralized and impurity-removed slag. This achieves the goals of resource utilization, harmlessness, and volume reduction of lepidolite neutralized and impurity-removed slag, aligning with my country's goals of developing a circular economy and energy conservation and emission reduction.

This invention belongs to the field of waste battery recycling, and specifically relates to a method for recycling and processing black powder from waste ternary lithium batteries. The method includes the following steps: S1 Primary acid washing: Mixing nickel- and cobalt-containing aluminum slag (aluminum slag 1) with sulfuric acid at an initial pH of 4-5; S2 Solid-liquid separation I: Separating the mixture obtained in S1 into a filtrate rich in nickel sulfate and cobalt sulfate, and aluminum slag 2; S3 Back-conditioning of filtrate 1; S4 Precipitation and recovery of aluminum slag 2. The technical solution of this invention achieves efficient recovery of valuable metals and deep purification of impurity metals, solving the technical bottleneck of traditional hydrometallurgical processes where these two aspects are difficult to balance. This invention elevates a traditional wastewater and waste residue treatment process into an advanced process system that achieves efficient resource conversion, internal recycling synergy, and a win-win situation for both economic and environmental benefits. It has significant application value in the field of non-ferrous metal resource recycling, especially in the field of lithium-ion battery recycling.

The invention belongs to the technical field of resource recovery and purification, and discloses a method for treating an acidic reaction solution in the production process of 8-hydroxyquinoline, which comprises the following steps of: producing 8-hydroxyquinoline by using hydrochloric acid instead of traditional sulfuric acid, obtaining the acidic reaction solution after the reaction is finished, and deacidifying; adding an organic solvent into the deacidified acidic reaction liquid, then adding a neutralizer to adjust the pH value, carrying out extraction, transferring 8-hydroxyquinoline into an organic phase, leaving an intermediate layer and sodium chloride brine, and carrying out filter pressing treatment on the intermediate layer; performing oil-water separation on the sodium chloride saline water, the intermediate layer pressure filtrate and the organic phase containing the 8-hydroxyquinoline through a phase separation tower; performing purification treatment on sodium chloride brine obtained by oil-water separation, performing atmospheric distillation on an organic phase obtained by oil-water separation to obtain an organic solvent, and performing reduced pressure distillation to obtain 8-hydroxyquinoline. The method has remarkable economic benefits and environmental benefits, and an efficient and feasible technical path is provided for green and sustainable development of 8-hydroxyquinoline production.

The application discloses a kind of SERS substrates based on double enhancement of graphite carbon material, preparation steps include: step S1, polymer array preparation;Step S2, polymer rapid method preparation substrate array;Step S3, femtosecond laser ablation PDMS substrate;It also includes step S4, electron beam evaporation;The application proposes a new double enhanced SERS substrate, utilizes the processing method of femtosecond laser combined with chemical wet etching to prepare pyramid array structure, and efficiently obtains the inverted pyramid template with uniform structure and high specific surface area, and the PDMS substrate prepared by polymer forming method has the advantages of repeatability;The surface of PDMS polymer is laser-induced modified by femtosecond laser pulse processing, and the stacked GCs structure is generated on the surface of material, so that the substrate has the advantages of good enhancement effect, stable properties, many 'hot spots' and the like, and overcomes the limitations of traditional state substrate.

The invention relates to the technical field of H2 preparation and CO2 capture, and discloses a non-pure hydrogen assisted seawater carbon capture method and system. The method comprises the following steps: softening seawater to remove calcium and magnesium ions; introducing dehydrated and dedusted non-pure hydrogen into an anode chamber of the electrochemical reactor, oxidizing under the action of a catalyst to generate protons, and migrating the protons to an acidification chamber through an ion exchange membrane to react with carbonate in the softened seawater to generate soluble CO2; cO2 is extracted through a vacuum stripping method; the seawater in the cathode chamber is subjected to a hydrogen evolution reaction to generate hydrogen and alkaline water, and hydrogen is extracted; synthesizing hydrocarbons such as methane and methanol from the captured CO2 and H2 under the action of a catalyst; the extracted acidic and alkaline waste liquid is mixed and neutralized to be close to neutral and then is discharged. According to the invention, industrial waste gas resource utilization, seawater low-carbon capture and high-efficiency hydrogen production collaboration are realized, and the method has the advantages of low energy consumption, low cost, environmental friendliness and high added value of products.

The utility model relates to ECU controller shell processing technical field discloses a surface treatment equipment for ECU controller shell processing, including electrophoresis tank main part, the inside bottom end sliding connection of electrophoresis tank main part has the scraper, the lateral surface of scraper is equipped with arc flow guide groove, the inside fixed mounting of scraper has check valve no.

The application discloses a sludge sewage pool cleaning device, which comprises a caterpillar auger drill vehicle, the caterpillar auger drill vehicle is connected with a working module through a drill rod, the working module is a stirring head or an oil sludge conveying pump trailer, and the sludge sewage pool cleaning device further comprises a hydraulic power system for controlling the caterpillar auger drill vehicle and the oil sludge conveying pump trailer; an oil sludge conveying pump is arranged on the oil sludge conveying pump trailer, and the collected sludge-water mixture is conveyed to a collecting device through a conveying hose connected with an output end of the oil sludge conveying pump, wherein the power of the oil sludge conveying pump is provided by the hydraulic power system. The sludge sewage pool cleaning device has the advantages that a power unit does not need to be separately arranged for the oil sludge conveying pump, the sludge sewage pool can be safely and effectively cleaned in all directions, no extra waste is generated in the cleaning process, and the subsequent treatment cost is not increased, so that the oil field production unit can reduce cost and increase benefit.

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.

This utility model discloses a double-n-type compact heating furnace, belonging to the field of heating furnace technology. It includes a vertically arranged radiant section and a convection section, as well as a horizontally arranged transition section. The radiant section houses a radiant furnace tube assembly. A burner for heating the radiant furnace tube assembly is located at the bottom of the radiant section. The radiant section and the convection section are connected through the transition section to form an n-type heating furnace. The double-n-type compact heating furnace provided by this utility model, with its radiant and convection sections forming an n-type structure, not only makes the overall structure compact and eliminates the need for a complex flue at the bottom of the radiant section, but also overcomes the drawbacks of traditional top-mounted convection section furnaces being too tall and requiring extensive steel structure support, and traditional bottom-mounted convection section furnaces occupying too much space, through mutual support between the two. Simultaneously, the n-type radiant furnace tubes in the radiant section allow the process medium to flow in several n-shaped patterns within the furnace, ensuring residence time while fully utilizing the tube space and significantly improving heating efficiency.

The invention relates to the technical field of fireproof coatings, in particular to a preparation method of a silicon dioxide aerogel fireproof coating, which specifically comprises the following steps: S1, mixing and stirring a modified substrate emulsion and pentaerythritol to obtain a primary mixture; s2, adding silicon dioxide aerogel and acrylate emulsion into the primary mixed material; and S3, stirring the mixture obtained in the step S2, discharging, and standing and curing to obtain the silicon dioxide aerogel fireproof coating. The high-silicon fly ash is used for replacing a traditional silicon source, the raw material cost is greatly reduced, meanwhile, resource utilization of industrial solid waste is achieved, and green manufacturing and circular economy guidance are met. Through the collaborative design of the fly ash-based aerogel and the composite flame-retardant emulsion, light weight, high efficiency and low cost of the fireproof coating are realized, and the fireproof coating has good engineering application prospects and market competitiveness.

The invention discloses an angelica sinensis leftover material carbon quantum dot fluorescent probe as well as a preparation method and application thereof, and belongs to the technical field of preparation of carbon quantum dot fluorescent probes. The preparation method comprises the following steps: crushing cleaned and dried angelica leftover materials into angelica powder, taking the angelica powder as a carbon source, mixing the angelica powder with a boric acid solution in distilled water, carrying out a hydrothermal reaction, and after the reaction is finished, filtering, dialyzing and freeze-drying to obtain the angelica leftover material carbon quantum dot fluorescent probe. The angelica sinensis leftover material carbon quantum dot fluorescent probe is nearly spherical monodisperse nanoparticles, is uniform in particle size distribution and stable in fluorescent property, can detect Fe < 3 + > with high selectivity, shows good correlation to Fe < 3 + > in a relatively wide concentration range, and has a good application prospect in the field of Fe < 3 + > detection.

The invention discloses a preparation method and application of a cross-linked nanocellulose lithium battery binder, and belongs to the technical field of lithium ion battery binders. In the preparation process of the cross-linked nanocellulose lithium battery binder, a rigid crystalline nanobody TOCNF is introduced as a reinforcing phase, calcium citrate, citric acid or phytic acid is adopted as a green cross-linking agent, multiple hydrogen-bond interaction and a chemical cross-linked structure are synergistically formed in a system, and a stable three-dimensional network is constructed, so that expansion and cracking of a silicon-based electrode are effectively inhibited; the cycling stability and the capacity retention ratio are obviously improved; the plant-derived TOCNF is taken as a core and is matched with a green biodegradable cross-linking agent to construct a full-water-based system, toxic organic solvents are abandoned, and the method conforms to the concepts of environmental protection and circular economy. When the silicon-based lithium ion battery negative pole piece material is prepared, the TOCNF and the cross-linking agent are introduced to construct a synergistic three-dimensional network, and SBR elastic buffering is combined, so that SiOx volume expansion and pole piece cracking are effectively inhibited, and the cycling stability and the capacity retention rate of a silicon-based electrode are remarkably improved.

The invention relates to the technical field of electrolytic aluminum solid waste resource utilization, in particular to a method for preparing aluminum fluoride from electrolyte lithium extraction tailings. The invention provides a method for synergistically recovering aluminum and fluorine resources in tailings generated after lithium extraction of an electrolytic aluminum lithium-rich electrolyte. The method comprises the following steps: firstly, leaching the lithium extraction tailings by adopting a hydrochloric acid-aluminum chloride system, so that aluminum and fluorine enter a solution in the form of a fluorine-aluminum complex to obtain a fluorine-aluminum solution; secondly, impurity removal treatment is conducted on the fluorine-aluminum solution, impurities such as silicon, iron, phosphorus and calcium are removed by regulating and controlling the pH value and adding a precipitator, and a purified solution is obtained; finally, hydrofluoric acid is supplemented into the purified liquid, and the anhydrous aluminum fluoride product with the high additional value is prepared through concentration, crystallization and calcination. The method is reasonable in process, efficient resource utilization of complex fluorine-containing and aluminum-containing solid waste is achieved, the aluminum and fluorine recovery rate is high, the product purity is high, and a new technical approach is provided for solving the electrolytic aluminum solid waste treatment problem and constructing a circular economy industrial chain.

The invention relates to the technical field of bamboo processing and food packaging, and particularly discloses a scheme for improving bamboo temperature tolerance and surface hydrophobicity, the scheme comprises the following steps: pretreatment: carrying out ultrasonic-assisted hydrothermal treatment on raw materials; the surface of the bamboo wood is coated with the coating, the coating comprises cellulose nanofibers (CNF), food-grade high-hardness resin and food-grade silicon dioxide, and the bamboo wood which can resist the high temperature of 200 DEG C and can be repeatedly used for food contact can be prepared after curing. According to the method, thermo-sensitive substances in bamboo wood are effectively removed through multiple times of mild ultrasonic pretreatment, soluble sugar with high hygroscopicity on the surfaces of the bamboo chips is removed, and the heat resistance of the bamboo chips is improved on the premise that the mechanical property is not damaged; the biomass-based temperature-resistant coating is adopted, the adhesive force of the coating is high, a layer of compact physical barrier is formed on the surface of the bamboo wood through food-grade high-hardness resin, and water permeation is prevented. CNF is used as a nano reinforced phase, and the strength, toughness and adhesive force to bamboo wood of the coating are improved through a three-dimensional network structure. In addition, food-grade silicon dioxide is dispersed in the coating to form a microscopic coarse structure to block air and further enhance the hydrophobic effect, so that the product has hydrophobicity on the premise of improving the temperature resistance, is safe and non-toxic, and meets the safety standard of food contact materials. The obtained bamboo wood is suitable for application scenes such as food processing utensils, catering kitchenware, cooking and the like.

This invention provides a recyclable prefabricated steel pile horizontal retaining plate foundation pit support system and its construction method, belonging to the field of building construction technology. It includes a vertical load-bearing system and a horizontal force transmission system. The vertical load-bearing system comprises several vertical H-shaped steel piles arranged sequentially to form a rectangle. The horizontal force transmission system comprises a rectangular frame-type capping beam and two walers. The capping beam is horizontally placed on the top of the inner side of the steel piles; the two walers are horizontally placed in the middle and lower middle parts of the inner side of the steel piles. The capping beam and walers are fixedly connected to the steel piles. This system achieves standardized design, rapid assembly and construction, reversible disassembly throughout the process, and efficient recycling of support components, fundamentally solving problems such as material waste, long construction cycles, and environmental unfriendliness. Simultaneously, modular design enhances the flexibility and adaptability of the support structure, significantly reducing the overall cost of foundation pit support and promoting the development of foundation pit engineering towards a green, low-carbon, and industrialized direction.

The application provides a high-wear-resistance composite hammer head tooth sleeve casting, a preparation method and application. The casting is prepared from a chromium-nickel-molybdenum hot work die steel through rare earth alloy micro-alloying treatment. The rare earth alloy comprises a rare earth element and ferrosilicon. The rare earth element comprises at least one of lanthanum and cerium, and the total content of lanthanum and cerium accounts for 30-50% of the total mass of the rare earth element. The addition amount of the rare earth alloy is 0.1%-0.5% based on the total mass of the smelting raw materials of the casting. The preparation method is simple and convenient to operate, does not need large-scale modification of existing production equipment, the process cost is controllable, and the method is easy to realize large-scale industrial production. Meanwhile, the solid waste emission caused by frequent replacement of tooth sleeves is reduced, the development concept of green manufacturing and circular economy is met, and good economic benefits and environmental benefits are obtained.

The invention discloses a modified epoxy curing agent based on KH-560 distillation residues as well as a preparation method and application of the modified epoxy curing agent. The preparation method comprises the following steps: A, putting a polyamine compound into a stirring kettle, and stirring; b, putting an accelerant into a stirring kettle, stirring the accelerant and the polyamine compound to obtain a mixed solution, uniformly mixing, introducing nitrogen into the stirring kettle, and replacing air in the kettle; c, the KH-560 distillation residues are put into a storage tank, nitrogen is introduced into the storage tank, and air in the storage tank is replaced; d, heating the mixed solution in the stirring kettle to a reaction temperature, and metering and dropwise adding the KH-560 distillation residue into the stirring kettle according to a theoretical equivalent to react; e, after dropwise adding is completed, liquid in the stirring kettle is subjected to heat preservation and continuous stirring at the reaction temperature, and the modified epoxy curing agent is obtained after discharging. According to the scheme, the KH-560 distillation residue can be safely and efficiently converted into the modified epoxy curing agent, the epoxy value in the KH-560 distillation residue is recycled, and meanwhile, the environment-friendly treatment cost is reduced.

The application discloses a hot-state magnesia spinel brick surface coating and a preparation method thereof. The surface coating raw material comprises the following components in percentage by weight: aggregate system 40-70%, bonding system 28-50%, sintering aid 1-5%, and additive 1-5%; wherein the aggregate system comprises the following components in parts by weight: magnesia spinel brick regenerated powder 30-50 parts and functional fine powder 10-20 parts; and the bonding system comprises the following components in parts by weight: active alumina micro powder 10-20 parts, light-burned magnesium oxide powder 5-15 parts, and silicon micro powder 3-8 parts. The coating forms a firm chemical bonding interface, the bonding strength is significantly higher than that of a traditional normal-temperature coating, and the anti-peeling capacity is greatly improved; the waste brick is used as the raw material, the cost is reduced, the recycling economic concept is met, the brick life is prolonged, the replacement frequency is reduced, and energy and cost are saved.

The invention provides a method for promoting a biogas residue aerobic composting humification process, and belongs to the technical field of solid waste recycling. The method comprises the following steps: crushing and sieving tea wastes, adding into water, fully stirring, and filtering to obtain a tea residue leachate; mixing the biogas residue with a high C / N auxiliary material according to a carbon-nitrogen ratio to obtain a compost raw material; adding the tea residue leachate into the compost raw material, then adjusting the moisture content, and then carrying out aerobic fermentation to obtain a compost product. According to the method, by promoting the humification process, the aerobic composting efficiency of the biogas residues is improved, the retention rate of organic matters in the composting process can be increased, and the loss of the total organic carbon content is reduced by 40-50%; the humification process can be effectively accelerated, the humic acid coefficient is increased by 10%-30%, and the polymerization degree is increased by 60%-80%; the aerobic composting efficiency is obviously improved.

The invention relates to the technical field of rubber, and relates to a corrosion-resistant rubber composite material and a preparation method thereof. The corrosion-resistant rubber composite material comprises the following components in parts by weight: 100 parts of matrix rubber; 50-65 parts of regenerated microspheres with a core-shell structure; 20 to 30 parts of layered hydrotalcite; 1 to 3 parts of dicumyl peroxide; 0.5 to 2.5 parts of auxiliary cross-linking agent TAIC (triallyl isocyanurate); 3-8 parts of epoxidized soybean oil; 0.5 to 2 parts of stearic acid; and 1-2 parts of an anti-aging agent 445. According to the corrosion-resistant rubber composite material provided by the invention, the mechanical property of the composite material is improved, the corrosion resistance of the composite material is improved, and the problems that a traditional material is insufficient in tensile strength and elongation at break and is easy to damage in a severe corrosion environment are solved; and the utilization value of the waste tires is increased, the solid waste treatment mode is improved, secondary pollution is avoided, and low-cost green cyclic utilization is achieved.

This invention discloses a method for cultivating Schizophyllum commune using crop straw and a circular ecological aquaculture method using the residue, belonging to the technical field of agricultural waste resource utilization and edible fungi cultivation. The method includes: straw alkalization and softening treatment: after crushing the crop straw, soaking it in a lime-urea mixed aqueous solution, separating the solid and liquid, and adjusting the pH to neutral to obtain softened straw. Thus, it is possible to obtain softened straw by crushing crop straw, soaking it in a lime-urea mixed aqueous solution, separating the solid and liquid, and adjusting the pH to neutral.