355 results about "Sodium polymetaphosphate" patented technology

The invention discloses a liquid cement grinding aid and a preparation method thereof, and belongs to the technical field of cement grinding aid preparation, the liquid cement grinding aid comprises the following raw materials by weight: 76-80% of water, 18-20% of hydrochloric acid and 2-4% of sodium hexametaphosphate. The preparation method of the liquid cement grinding aid comprises the following steps: uniformly mixing the raw materials according to the weight percentage, and carrying out activation reaction to prepare the liquid cement grinding aid. The cement grinding aid disclosed by the invention is prepared by mixing hydrochloric acid, water and sodium hexametaphosphate according to a specific proportion, and through scientific regulation and control of the synergistic effect of all the components, the cement grinding aid has good grinding aiding performance and remarkably improves the specific surface area and grinding aiding efficiency of cement; the component design fully considers the cement hydration process and the compatibility with the water reducing agent.

The invention belongs to the field of fermentation, and particularly relates to a complex microbial inoculant, original cheese, processed cheese with a blood sugar reducing function and preparation and application of the complex microbial inoculant. Wherein the processed cheese is prepared by the method comprising the following steps: mixing the components including raw cheese, sugarcane juice, corn oil, casein, concentrated milk protein, blueberry powder, mono / diglycerol fatty acid ester, sodium citrate, sodium tripolyphosphate, sodium hexametaphosphate, salt guar gum, potassium sorbate and water, and then emulsifying to obtain the processed cheese, the sugar cane juice, the corn oil, the casein, the concentrated milk protein, the blueberry powder, the mono / diglycerol fatty acid ester, the sodium citrate, the sodium tripolyphosphate, the sodium hexametaphosphate, the salt guar gum, the potassium sorbate and the water, the original cheese is prepared from a complex microbial inoculant, and the complex microbial inoculant comprises lactococcus lactis bacterial powder, lactococcus lactis subsp. Lactis bacterial powder, lactobacillus delbrueckii subsp. Lactis bacterial powder, lactobacillus plantarum bacterial powder and lactobacillus paracasei bacterial powder. The processed cheese provided by the invention has a better function of controlling blood sugar, and meanwhile, the processed cheese is fine and uniform in texture and has good smearing performance.

The invention discloses acid-resistant calcium carbonate and a preparation method thereof, and belongs to the technical field of calcium carbonate filler production. According to the invention, industrial waste carbide slag is used as a calcium source, and calcium hydroxide slurry is obtained through impurity removal; then adding sodium polyacrylate and sodium hexametaphosphate, stirring and dispersing, then introducing carbon dioxide for carbonization, adding a surfactant for ultrasonic activation after carbonization, and finally sequentially adding zirconium oxychloride and sodium silicate to prepare the acid-resistant calcium carbonate. The defects of traditional silicon dioxide and titanium dioxide coated calcium carbonate products are overcome, the prepared calcium carbonate product is compact and uniform in coating layer and good in stability, meanwhile, excellent acid resistance and mechanical property are considered, the calcium carbonate can be suitable for more acid environments, and the application range of calcium carbonate is effectively widened.

The invention relates to the technical field of reverse osmosis membrane maintenance, in particular to a cleaning scale inhibitor special for a reverse osmosis membrane and application of the cleaning scale inhibitor. The cleaning scale inhibitor provided by the invention comprises an agent A, an agent B and an agent C, the agent A comprises the following components in percentage by mass: 10-20% of organic phosphonic acid, 10-20% of polycarboxylic acid polymer, 5-10% of sulfamic acid, 3-8% of sodium gluconate and the balance of water; the agent B comprises 8-15% of an isothiazolinone bactericide, 5-10% of a nonionic surfactant, 3-8% of a chlorine bactericide, 2-5% of sodium dodecyl benzene sulfonate and the balance of water; and the agent C comprises 10-20% of sodium polyacrylate, 8-15% of sodium hexametaphosphate, 5-10% of citric acid, 3-8% of silicate and the balance of water. The cleaning scale inhibitor provided by the invention has an efficient cleaning effect on various pollutants, is environment-friendly, and does not cause chemical damage to a reverse osmosis membrane.

The method for preparing D-mannose through catalysis can effectively reduce the amount of by-products glucose and fructose, and greatly improves the conversion rate of D-mannose. Specifically, engineering bacteria for expressing isoamylase genes and engineering bacteria for expressing alpha-glucan phosphorylase genes, glucophosphate mutase genes, difunctional enzyme glucophosphate isomerase / mannose 6-phosphate isomerase genes and mannose 6-phosphate phosphatase genes are utilized, starch or starch derivatives are used as substrates, and the starch or starch derivatives are used as substrates. A phosphate buffer solution and Mg < 2 + > are added, a preliminary catalysis system is constructed, after the reaction is completed, an incompletely-reacted substrate and maltodisaccharide exist in the reaction system, the incompletely-reacted substrate and maltodisaccharide can be hydrolyzed into glucose by glucoamylase, and the polyphosphoglucokinase can be used for catalyzing the reaction of the polyphosphoglucokinase under the assistance of sodium hexametaphosphate. All glucose is converted into phosphorylated glucose, then D-mannose is generated, and by-products in a system are removed while the yield is increased.

The invention discloses a high-salt-resistance composite cleanup additive and a preparation method thereof, and relates to the technical field of oilfield chemical additives. The invention discloses a high-salt-resistance composite discharge aiding agent. The cleaning agent is prepared from the following raw materials in parts by weight: 10 to 20 parts of modified sodium dodecyl benzene sulfonate, 5 to 10 parts of cocamidopropyl betaine, 8 to 15 parts of polyoxyethylene ether, 2 to 5 parts of nano silicon dioxide, 3 to 8 parts of sodium hexametaphosphate, 1 to 3 parts of low-molecular-weight polyacrylamide, 4 to 10 parts of modified polyacrylic acid-acrylamide copolymer, 15 to 30 parts of ethanol and 5 to 12 parts of ethylene glycol butyl ether. 2-6 parts of an imidazoline derivative, 3-7 parts of amino trimethylene phosphonic acid, 4-9 parts of sodium silicate and 2-5 parts of citric acid-sodium citrate. Aiming at development requirements of high-salt oil reservoirs, sodium dodecyl benzene sulfonate and the polyacrylic acid-acrylamide copolymer are modified, and raw materials are scientifically compounded, so that the cleanup additive shows high stability in a high-salt environment, can reduce interfacial tension and effectively regulate and control rock surface wettability, has foam stability and biodegradability, and can be widely applied to high-salt oil reservoirs. The method is suitable for high-salt complex oil reservoir operation scenes.

The invention belongs to the technical field of fire-extinguishing building materials, and discloses a microencapsulated efficient automatic fire-extinguishing patch and a preparation method thereof.The fire-extinguishing patch contains a fire-extinguishing microcapsule, the fire-extinguishing microcapsule is of a double-layer structure, the inner layer contains gelatin, kaolin, perfluorohexanone, sodium hexametaphosphate, resorcinol and glutaraldehyde, and the outer layer contains gelatin, kaolin, perfluorohexanone, sodium hexametaphosphate, resorcinol and glutaraldehyde; and the outer layer comprises a vinylidene fluoride-acrylic acid copolymer and glutaraldehyde. According to the invention, the flaky kaolin is used for enhancing the formaldehyde-free phenolic aldehyde inner layer and the vinylidene fluoride-acrylic acid copolymer outer layer to form a double-layer shell layer with high air tightness, so that the compactness and long-term stability of the shell layer of the microcapsule are greatly improved.

The invention discloses an inorganic normal-temperature rapid-hardening coal-rock mass reinforcing and filling material, and relates to the technical field of mine reinforcement. The material comprises a liquid A and a liquid B, the liquid A is prepared from cement, fly ash, magnetic nano silicon dioxide, citric acid and a layered bimetal oxide-sodium hexametaphosphate compound; and the liquid B comprises water glass, superfine limestone and water. During use, the liquid A and the liquid B are mixed according to the volume ratio of 1: 1 and injected into a target area, and a 1.5 Tesla magnetic field is applied at the initial stage of grouting until the grout is initially set. Through the synergistic effect of the compound protection dispersing agent, the magnetic particles and an external magnetic field, the technical problems that an existing material is unstable in performance due to temperature change, nanoparticles are prone to agglomeration, and magnetic response is attenuated in an alkaline environment are effectively solved; the technical effects of rapid solidification, high strength and excellent durability in high-temperature, low-temperature and complex mine environments are achieved.

The invention relates to the technical field of ceramic glaze water, in particular to ceramic glaze water capable of continuously releasing negative ions based on a rare earth material and a preparation method of the ceramic glaze water. Comprising a negative ion material, sodium polystyrenesulfonate, an immobilized bacterium preparation, carbon nanotube modified graphene oxide, turbo stone, modified sepiolite, nano-zinc oxide, sodium hexametasilicate, polyethylene glycol, a composite antioxidant, a coalescing agent, a slow-release carrier and deionized water. The negative ion material is formed by mixing low-radioactivity commercial rare earth powder, tourmaline and opal according to the mass ratio of (3-4): (4-5): 1. According to the invention, the preparation cost of the glaze water is reduced and the production efficiency is improved by optimizing the composition and compounding mode of the negative ion material, enhancing the stability of the bacterial preparation and simplifying the preparation process, meanwhile, the negative ion release durability, the ceramic surface adhesive force and the antibacterial property are remarkably enhanced, and the requirements of industrial production and practical application are met.

The invention provides a beneficiation method of low-grade superfine silt containing lithium, rubidium and cesium, which comprises the following steps: adding sodium hexametaphosphate and a collecting agent JXL-01 into ore pulp, stirring, and roughing to obtain lepidolite rough concentrate and flotation tailings I; a collecting agent JXL-01 is added into the flotation tailings I for two times of scavenging, the flotation tailings and two scavenging middlings are obtained, and the scavenging middlings are sequentially returned to the upper layer for operation; sodium hexametaphosphate is added into the lepidolite rough concentrate for two times of concentration, lepidolite concentrate and two concentrated middlings are obtained, and the two concentrated middlings are sequentially returned to the upper layer for operation. And the collecting agent JXL-01 is obtained by mixing dodecylamine and sodium alpha-olefin sulfonate according to the mass ratio of 3: 2. According to the method, comprehensive utilization of the lithium-rubidium-cesium-containing superfine silt is achieved, the recovery effect of the lithium-rubidium-cesium-containing superfine silt is effectively improved, and the method is a novel mineral separation method which is stable, efficient, high in adaptability and high in recovery index and is suitable for application and popularization.

The invention provides a high-selectivity flotation method for micro-fine particle lepidolite containing rubidium and cesium, which comprises the following steps: levigating raw lepidolite ore, and desliming to obtain a flotation material and slime; adding sodium hexametaphosphate and a collecting agent HT8-01 into the flotation material, stirring, and roughing to obtain lepidolite rough concentrate and flotation tailings I; a collecting agent HT8-01 is added into the flotation tailings I for two times of scavenging, flotation tailings and two scavenging middlings are obtained, and the scavenging middlings are sequentially returned to the upper layer for operation; sodium hexametaphosphate is added into the lepidolite rough concentrate for two times of concentration, lepidolite concentrate and two concentrated middlings are obtained, and the concentrated middlings are sequentially returned to the upper layer for operation; the collecting agent HT8-01 is obtained by mixing octadecylamine and sodium dioctyl sulfosuccinate according to the mass ratio of 5: 3. According to the method, the separation effect of the rubidium-cesium-lithium-containing mica and gangue minerals such as quartz and feldspar is improved, the problems that foam is too stable, the viscosity is too high and the size is too large are solved, and high-selectivity separation of the micro-fine-particle rubidium-cesium-lithium-containing mica is achieved.

The invention discloses a method for extracting copper fine powder by flotation of copper-containing ore, which belongs to the technical field of mineral processing, and comprises the following steps: after copper-containing raw ore is crushed, ground and classified by a cyclone, overflow enters flotation, and settled sand is returned for regrinding; sodium carbonate is added into graded overflow to adjust the pH, a sodium hexametaphosphate-polyacrylamide composite dispersant is added, and copper sulfate is added and stirred after low-temperature microwave heating; gradient flotation is conducted, specifically, copper sulfide is roughly selected, the pH is adjusted, an amino-sulfonic acid group synergistic modified layered double metal hydroxide / cobalt ferrite composite collecting agent is added, and rough concentrate 1 is obtained through high-frequency pulse air inflation flotation; copper oxide roughing is conducted, clear water is supplemented to adjust the pH, and a collecting agent is supplemented to obtain rough concentrate 2; scavenging is performed for three times, a collecting agent is added for flotation, and concentrate returns to the previous stage; the rough concentrates are combined, and magnetic impurities are removed through high-gradient magnetic separation to obtain magnetic concentrates; and carrying out microbiological leaching on tailings to recover copper. The composite collecting agent is prepared through layered double hydroxide carrier synthesis, amino modification, sulfonic acid group grafting and cobalt ferrite anchoring.

The invention relates to a co-doped carbon nitride / phosphomolybdic acid composite catalyst as well as a preparation method and application thereof. The composite catalyst is composed of co-doped carbon nitride and phosphomolybdic acid loaded on the co-doped carbon nitride; the co-doped carbon nitride is graphite phase carbon nitride co-doped with sodium, phosphorus and oxygen, and the co-doped carbon nitride is prepared by mixing a cyanamide compound and sodium hexametaphosphate and calcining at high temperature. The composite catalyst is used for photocatalytic production of hydrogen peroxide, and a method for photocatalytic production of hydrogen peroxide comprises the following steps: dispersing the co-doped carbon nitride / phosphomolybdic acid composite catalyst in an aqueous solution containing a sacrificial agent, and performing photocatalytic preparation of hydrogen peroxide under irradiation of a xenon lamp. Compared with the prior art, the preparation method provided by the invention is simple and good in repeatability, the charge separation efficiency of the prepared photocatalytic material is remarkably improved, and the photocatalytic hydrogen peroxide preparation efficiency is high.

The invention provides a waste lithium iron phosphate battery recovery process, and relates to the technical field of battery recovery, the waste lithium iron phosphate battery recovery process comprises the following steps: pre-treating waste lithium iron phosphate batteries to obtain battery powder; mixing the battery powder with a lithium source, and carrying out aerobic roasting and water leaching at 400-600 DEG C to obtain a first lithium-containing solution and modified battery powder; 90-120 g / t of sodium hexametaphosphate, 400-1000 g / t of sulfuric acid, 400-600 g / t of kerosene and 100-200 g / t of 2 # oil are added into the modified battery powder for flotation, and a graphite product and lithium iron phosphate battery powder are obtained. The process can effectively improve the recovery rate and recovery purity of graphite and lithium iron phosphate materials in the battery powder, and is suitable for large-scale industrial recovery treatment.

The invention discloses a micro-arc oxidation coating for an artificial hip joint Ti6Al4V alloy and a preparation method of the micro-arc oxidation coating. The preparation method comprises the following steps that S1, pretreatment is conducted; s2, preparing a micro-arc oxidation electrolyte; s3, preparing a micro-arc oxidation coating; s4, cleaning and drying treatment; a preparation method of the electrolyte comprises the steps that 6 g of sodium metaaluminate solid powder, 4 g of potassium hydroxide solid powder, 2 g of sodium hexametaphosphate solid powder, 4 g of sodium silicate solid powder and 4 g of yttrium oxide nanoparticles are sequentially weighed and added into a beaker, then 980 mL of ultrapure water at the temperature of 60 DEG C is added into the beaker, and stirring is conducted for 2 min while the temperature is kept; the yttrium oxide particles are approximately spherical or ellipsoidal, the particle size range is 20-50 nm, and the purity is 99.99%. The yttrium oxide nanoparticles are introduced into the electrolyte, the micro-arc oxidation coating containing the yttrium oxide is prepared on the surface of the Ti6Al4V alloy, and compared with a traditional micro-arc oxidation coating, the surface porosity of the micro-arc oxidation coating containing the yttrium oxide is remarkably reduced, and the compactness is remarkably improved.

The invention provides a pitaya wine processing technology. The pitaya wine processing technology is optimized aiming at the problems that pigments are easy to degrade, the fermentation efficiency is low, and the flavor is single in a traditional technology. According to the raw material pretreatment, ultrasonic cleaning (0.05% sodium hexametaphosphate solution) is combined with metal ion control (Fe2 / Cu2 is less than or equal to 0.1 mg / L), and the juice yield is increased through composite enzymolysis (pectinase and cellulase). In the low-temperature fermentation stage, the period is shortened to 10 hours by utilizing fed-batch strain activation, and the retention rate of characteristic aroma is remarkably improved by combining pulse ultrasound and nitrogen protection (the oxygen content is less than or equal to 0.5 ppm); and through infrared monitoring and gradient cooling, accurate control of the alcoholic strength being 12% vol and the residual sugar being less than or equal to 4g / L is realized. In the aging stage, nitrogen is adopted to isolate oxygen (high-purity nitrogen is greater than or equal to 99.99%) and a KPA stabilizer, so that the degradation rate of betacyanin is less than or equal to 10%. Finally, the stability is improved through ceramic membrane filtration, cold stabilization and pasteurization, and the product is purplish red in color and luster and complex in flavor and has industrial application potential.

The invention provides a fluorite flotation composite inhibitor and a preparation method and application thereof.The composite inhibitor can be used for flotation of phosphorus-containing high-calcium low-grade fluorite mine and comprises, by mass, 1-5 parts of sodium hexametaphosphate, 8-40 parts of sodium humate, 2.8-14 parts of tannin extract, 5-40 parts of water glass and 0.2-1 part of sodium acrylate. The preparation method comprises the following steps: S1, dissolving sodium hexametaphosphate, water glass and sodium acrylate in water to obtain a mixed solution; and S2, adding the tannin extract and the sodium humate into the mixed solution, and uniformly mixing the tannin extract and the sodium humate. The fluorite flotation composite inhibitor is high in selective inhibition performance, small in influence on floatability of fluorite while inhibiting calcite and apatite, better in selective inhibition effect compared with a single traditional inhibitor such as water glass and the like, capable of achieving efficient separation of calcite, apatite and other calcium-containing gangue minerals and fluorite and capable of achieving efficient flotation of fluorite. And high-quality and high-recovery-rate fluorite concentrate is obtained, and the comprehensive benefits of the flotation process are greatly improved.

The invention provides a preparation method of small-particle-size narrow-distribution double-group anion exchange resin. The preparation method comprises the following steps: respectively preparing an oil-phase mixed solution and a water-phase mixed solution; carrying out heating reaction on the two materials under a magnetic stirring condition to obtain superfine resin white balls; the superfine resin white balls are prepared into chloromethylated superfine resin white balls, then primary amination treatment is carried out, quaternary amine groups are grafted, and the double-group superfine anion exchange resin is obtained. The small-particle-size narrow-distribution double-group anion exchange resin of which the effective particle size is less than 50 microns and the uniformity coefficient is less than 1.5 is prepared through the synergistic dispersion effect of the polyvinyl alcohol and the sodium hexametaphosphate and the uniform shearing effect of magnetic stirring.

The invention relates to the technical field of material processing, in particular to a coating method of a pearlescent pigment base material. According to the technical scheme, the preparation method comprises the following steps: dropwise adding a water-soluble ferric salt solution into an acidified amine precipitant aqueous solution, reacting to obtain a precursor solution of ferric oxide, putting an inorganic salt additive and flaky alpha-Al2O3 powder into the precursor solution of ferric oxide, carrying out hydrothermal reaction, and cleaning and drying the precipitate after reaction, the flaky alumina-based pearlescent pigment with a good pearlescent effect is obtained. The preparation method has the beneficial effects that an aqueous solution of an amine precipitator and an iron salt solution react to obtain a precursor solution of iron oxide, the surface of alpha-Al2O3 can be coated with alpha-Fe2O3 only through hydrothermal reaction without high-temperature sintering, and sodium polyphosphate salts such as sodium hexametaphosphate, sodium tripolyphosphate and sodium pyrophosphate are introduced as additives; the coating rate of ferric oxide can be improved within a certain range, the preparation efficiency of the pearlescent pigment taking alpha-Al2O3 as the substrate is effectively improved, and the production cost is reduced.

The invention discloses large-temperature-difference low-density well cementation cement slurry for an ultra-deep well and a preparation method of the large-temperature-difference low-density well cementation cement slurry. The preparation method comprises the following steps: preparing a phosphoric acid solution from a 60% HEDP solution, sodium hexametaphosphate and water according to the ratio of 6: 3: 41; preparing a 10% zinc nitrate aqueous solution; the preparation method comprises the following steps: uniformly dry-mixing 450 parts of oil well G-grade cement, 120 parts of silicon powder, 100-85 parts of low-density light material and 120-80 parts of active strength enhancer to obtain dry-mixed aggregate; the method comprises the following steps: dissolving 22-15 parts of a high-temperature fluid loss agent G33S in 435-340 parts of tap water to obtain an aqueous solution of the high-temperature fluid loss agent; uniformly mixing an aqueous solution of a fluid loss agent with the dry-mixed aggregate to obtain mixed cement paste; 4.8-14 parts of a zinc nitrate aqueous solution is taken and poured into the cement paste mixed slurry to be mixed, then 9-35 parts of the hydrolyzed phosphoric acid solution is poured into the cement paste mixed slurry to be mixed evenly, and the cement paste is obtained. The cement paste can play a role in retarding at the high temperature of the well bottom and can prevent gas channeling at the low temperature of the top.

The invention relates to the technical field of water quality purification treatment, in particular to a water quality purifying agent for aquaculture and a preparation method. The water quality purifying agent is prepared from potassium peroxymonosulfate composite salt, citric acid, humic acid, sodium carbonate, magnesium carbonate, sodium hexametaphosphate, probiotics, polyethylene glycol, anhydrous sodium sulphate, a composite plant cell additive, plant active ingredients and water. According to the water quality purifying agent disclosed by the invention, various effective components are scientifically compounded, so that the water quality purifying effect of the water quality purifying agent is more outstanding, and the compound plant cell additive is specially added, so that the metal trapping agent is limited and fixed in pores, and gelated plant active cells are wrapped; the water quality purifying agent has the advantages that secondary pollution to a water body after metal ions are adsorbed and chelated is avoided, and damage to plant active cells caused by microorganisms and phosphate is also avoided, so that the water quality purifying agent is more stable, the efficacy time is prolonged, and good economic benefits are achieved.

The invention relates to the technical field of porous ceramic membranes, in particular to a high-precision silicon carbide porous ceramic membrane and a preparation method thereof.The preparation method comprises the steps that firstly, silicon carbide, an additive, sodium carboxymethyl cellulose and a composite pore-forming agent serve as raw materials, and a ceramic membrane supporting body is prepared through primary calcination and secondary calcination; secondly, preparing a film coating solution by adopting sodium hexametaphosphate, water, silicon carbide and polyethylene glycol as raw materials; immersing a ceramic membrane support body into the membrane coating liquid, and then drying and sintering to obtain the high-precision silicon carbide porous ceramic membrane. The high-precision silicon carbide porous ceramic membrane is good in mechanical property, high in filtering precision, high in filtering efficiency and uniform in pore size distribution, the calcination temperature in the preparation process is low, the calcination time is short, and energy can be saved.

The present invention provides a sodium polyacrylate hydrogel grinding aid and its preparation method and application, relating to the technical field of mineral grinding. By adding the sodium polyacrylate hydrogel, the present invention significantly reduces the surface energy of mineral powder, thereby greatly reducing the energy barrier for its crushing, improving the grinding efficiency, significantly reducing the grinding resistance, enhancing the fluidity of the powder, and reducing the energy consumption during the grinding process; adding triethanolamine can significantly reduce the surface tension of mineral powder particles, lower the surface energy of mineral powder, overcome the attraction between mineral powders, reduce the resistance, improve the fluidity of mineral powder, thereby improving the grindability. At the same time, it can also greatly increase the specific surface area of mineral powder, improving the grindability and activity of mineral powder; adding sodium hexametaphosphate and polyacrylamide can prevent the aggregation of mineral powder from affecting the grinding, improve the grinding efficiency of mineral powder, increase the output, and reduce the power consumption. After using the sodium polyacrylate hydrogel grinding aid provided by the present invention, the activity, grinding efficiency and output of mineral powder are increased, and the power consumption is reduced.

The invention discloses a fluoride-free strong-acid-free reverse flotation method for extracting a high-purity quartz sand flotation product from granite pegmatite, and belongs to the technical field of mineral flotation. The method comprises the following steps: carrying out graded crushing and ore grinding on granite pegmatite to obtain slurry to be treated; carrying out wet magnetic separation on the to-be-treated slurry to obtain ore pulp after magnetic separation and magnetic-containing minerals; the pH value of the ore pulp is not adjusted, reverse flotation is carried out in the presence of a quartz mixed inhibitor, and a feldspar product and a quartz product are obtained; the quartz mixed inhibitor is a combination of a component A and a component B, wherein the component A is selected from at least one of sodium metasilicate, sodium tripolyphosphate, sodium hexametaphosphate, carboxymethyl cellulose and salinized water glass; the component B is selected from at least one of guar gum, Arabic gum, sodium humate and citric acid. The method is free of fluorine and strong acid, green and efficient, and is a method for preparing high-purity quartz sand from pegmatite with high industrial application feasibility.

The invention relates to the technical field of etching solutions, and discloses a molybdenum-aluminum-niobium etching solution for a TFT-LCD (Thin Film Transistor Liquid Crystal Display), which comprises the following components in percentage by mass: 50 to 60 percent of phosphoric acid, 3 to 8 percent of nitric acid, 5 to 10 percent of glacial acetic acid, 1 to 5 percent of aluminum nitrate, 0.1 to 0.5 percent of diphenyl thiourea, 1 to 5 percent of etidronic acid, 3.0 to 5.0 percent of sodium hexametaphosphate, 0.1 to 0.2 percent of fatty alcohol-polyoxyethylene ether, 0.5 to 0.8 percent of amino trimethylene phosphonic acid and the balance of ultrapure water. The invention further discloses a preparation method of the molybdenum-aluminum-niobium etching solution. According to the invention, a phosphorus nitrate vinegar system, a composite additive, a novel corrosion inhibitor, a metal ion chelating agent and a surfactant matched with the etching liquid are adopted, so that the molybdenum-aluminum-niobium multi-layer composite metal film can be simultaneously etched at one time; the etching solution has the advantages of being uniform in etching, capable of inhibiting Mo / Nb etching, high in selectivity, controllable in etching rate, free of residues, long in service life, high in stability and the like.

The invention relates to the technical field of interior wall building decoration coatings, discloses an anti-condensation thermal insulation coating and a preparation method thereof, and aims at solving the problem that an existing anti-condensation coating is poor in thermal insulation effect. The coating is of a double-component structure, and the weight mixing ratio of a component A (liquid material) to a component B (powder material) is 1: (2.5-3.5); the component A comprises 28-42 parts by weight of water and 58-82 parts by weight of a self-made soil modifier, and the component B comprises 68-82 parts by weight of a modified soil mixture, 0.8-1.6 parts by weight of auxiliary agents such as sodium hexametaphosphate and functional filler. Through physical and chemical reaction between the component A and the component B, a three-dimensional reticular porous structure is formed, moisture absorption and skeleton effects of the modified corncob particles, the loofah sponge fibers and the like and a heat preservation and heat insulation synergistic effect of the hollow glass beads and the like are combined, so that anti-condensation, high moisture absorption, low heat conduction, cracking resistance and high bonding strength are achieved, waste can be turned into wealth, and the environment is protected.

The preparation process comprises the following steps: connecting an aluminum alloy with an anode of a micro-arc oxidation alternating current power supply, and immersing the aluminum alloy in an electrolytic solution in a stainless steel electrolytic bath; the stainless steel electrolytic bath is connected with a cathode of the micro-arc oxidation alternating current power supply; the surface of the aluminum alloy is subjected to micro-arc oxidation treatment, and an Al2O3 / MoS2 / CePO4 composite ceramic film layer is constructed on the surface of the aluminum alloy in situ; wherein the electrolytic solution comprises a solvent, which is deionized water; the solute comprises the following components in parts by mass in each liter of solvent: 15 parts of sodium hexametaphosphate, 10 parts of EDTA-2Na (Ethylene Diamine Tetraacetic Acid), 5 parts of sodium molybdate, 10 parts of sodium sulfide and 5-12.5 parts of cerium acetate. According to the preparation process of the high-wear-resistance and high-corrosion-resistance micro-arc oxidation composite film layer, the high-wear-resistance and high-corrosion-resistance composite ceramic film layer is constructed on the surface of the aluminum alloy in situ, and the wear resistance and the corrosion resistance of the surface of the aluminum alloy are improved.

The invention discloses a multi-acting-force high-strength polysaccharide-based hydrogel mask which comprises a solution A and a solution B. The solution A comprises 0.3 wt%-4.0 wt% of sodium alginate, 0.5 wt%-2.0 wt% of plant polysaccharide, 0.5 wt%-1.5 wt% of a humectant, 0.1 wt%-0.6 wt% of a barrier repairing agent and 0.5 wt%-1.0 wt% of a thickening agent, and the pH of the solution A is 4.0-6.5. The solution B comprises 50-300 mM of calcium salt, 0.1-5.0 wt% of natural polyphenol, 0.1-5.0 wt% of amino acid and polypeptide raw materials, 0.1-5.0 wt% of provitamin B5 and 0.1-1.0 wt% of sodium hexametaphosphate, and the pH value of the solution B is neutral. According to the invention, a natural polyphenol-calcium ion multiple acting force system is applied to the hydrogel mask for the first time, a three-dimensional network structure is constructed through multiple actions of physical hydrogen bonds / hydrophobic interaction and ionic bonds, the mask is endowed with super-strong adhesiveness, high tensile strength, antioxidant activity and long-acting antibacterial performance, and the hydrogel mask has great popularization and application values.

The invention relates to the technical field of castable, and provides a steel ladle castable and a preparation method thereof. The steel ladle castable is prepared from the following components in parts by weight: 72 to 95 parts of fused corundum, 2 to 5 parts of magnesite clinker, 1 to 5 parts of fused magnesia, 4.5 to 6 parts of calcium aluminate cement, 2 to 3 parts of silica powder, 0.05 to 0.15 part of sodium tripolyphosphate, 0.1 to 0.2 part of sodium hexametaphosphate, 4 to 6 parts of zirconite, 1 to 8 parts of composite expanded graphite, 3 to 5 parts of phenolic resin and 3 to 5 parts of chelating agent, the scale sizes of the first expanded graphite and the second expanded graphite are different. According to the technical scheme, the problem that in the prior art, due to the secondary mullitization phenomenon caused by zirconite decomposition, the castable structure becomes loose, and the erosion resistance and the thermal shock resistance of the steel ladle castable are weakened is solved.

The invention discloses a low-resilience sprayed concrete admixture as well as a preparation method and application thereof, and relates to the technical field of engineering materials. The admixture is prepared from the following raw materials in parts by weight: 400 to 500 parts of silica fume, 100 to 250 parts of fluffy ash, 200 to 320 parts of pretreated coal gasification furnace slag micro powder, 20 to 30 parts of disodium dihydrogen pyrophosphate, 10 to 15 parts of sodium dihydrogen phosphate, 20 to 30 parts of sodium hexametaphosphate, 5 to 10 parts of rubber powder and 5 to 10 parts of cellulose ether. The preparation method comprises the following steps: weighing the raw materials in parts by weight, adding the raw materials into a concrete mixer, and uniformly stirring for 15-30 minutes; and bagging the uniformly stirred mixture to obtain the low-resilience sprayed concrete admixture. The obtained admixture is applied to sprayed concrete, and the low-resilience sprayed concrete is obtained. The problems that existing coal gasification slag sprayed concrete is low in construction efficiency, and the engineering quality is difficult to meet the requirements are solved.