356 results about "Sodium triphosphate" patented technology

The invention relates to the technical field of refractory materials, in particular to a waste magnesia-calcium brick-containing refractory material and a preparation method thereof, and the waste magnesia-calcium brick-containing refractory material comprises the following components: composite aggregate, calcium aluminate cement, urea resin-aluminum dihydrogen phosphate, active alpha-Al2O3 micro powder, silica micro powder and sodium tripolyphosphate. In the room-temperature spraying maintenance and low-temperature working stage, hydration of free CaO in the waste magnesia-calcium bricks and erosion of OH <-> are prevented through the hydrophobic effect of fluorinated polyphosphazene and modified zirconium oxide sol, and the compatibility and wettability of the composite aggregate and cement paste are improved through carboxylic acid groups of carboxyethyl silanetriol and polyethylene glycol monomethyl ether. According to the present invention, with the temperature rising, the aluminum dihydrogen phosphate forms the viscous liquid phase to wrap the aggregate so as to provide the temporary protection, the temperature continues to rise, the zirconium oxide and the nanometer Al2O3 react with the CaO and the MgO to generate the CaZrO3 and the MgAl2O3, the aluminum dihydrogen phosphate reacts with the nanometer Al2O3 in the system to generate the AlPO4, and the CaZrO3, the MgAl2O3 and the AlPO4 form the multi-phase fire-resistant structure so as to further improve the fire resistance of the fire-resistant material;

The invention relates to the technical field of glazes, and discloses a high-performance ceramic glaze for bacteriostatic domestic porcelain and a preparation method thereof. The high-performance ceramic glaze of the antibacterial domestic porcelain is prepared from the following raw materials in parts by weight: 5 to 15 parts of albite, 20 to 30 parts of potassium feldspar, 10 to 30 parts of kaolin, 13 to 26 parts of quartz, 0.3 to 7 parts of talc, 5 to 10 parts of limestone, 2 to 5 parts of ludwigite, 0.5 to 1 part of rare earth, 2 to 5 parts of honeysuckle-loaded CuS, 1 to 3 parts of modified polysiloxane, 0.1 to 0.5 part of sodium tripolyphosphate and 0.1 to 0.3 part of carboxymethyl cellulose. The high-performance ceramic glaze for the antibacterial domestic porcelain prepared by the invention has relatively good long-acting antibacterial performance and high strength.

The invention belongs to the technical field of bioengineering medicines, and particularly relates to a gel dressing for repairing skin wounds and a preparation method of the gel dressing. The anti-fouling coating is prepared from the following raw materials in parts by weight: 65 to 75 parts of polyvinyl alcohol, 14 to 20 parts of sodium alginate, 4 to 8 parts of sodium carboxymethyl cellulose, 1 to 3 parts of sodium hyaluronate, 12 to 22 parts of glycerol, 1 to 3 parts of surface anti-fouling additive, 6 to 10 parts of antibacterial microcapsule and 2 to 2.8 parts of compound ion. According to the invention, a PVA freeze-thaw physical network and an alginic acid Ca / Zn composite ion network cooperate to limit a pore channel, so that stable forming is realized; a chitosan / sodium tripolyphosphate microcapsule is prepared from polyhexamethylene biguanide hydrochloride and covered with sodium alginate, release sensitive to pH / ionic strength, acceleration in an inflammation stage and self-limiting in a later stage are constructed, and long-acting bacteriostasis is formed by SA-Zn site slow release; the stability and staged adaptation are highlighted through processes such as encapsulation, low-shear doping and the like and raw material synergy.

The invention discloses a fluoride-salt-free and nitrate-free cast iron enamel zirconium white glaze as well as a preparation method and application thereof, and belongs to the technical field of enamel. The zirconium white glaze is prepared from quartz, borax pentahydrate, magnesium carbonate, potassium carbonate, potassium feldspar, zinc oxide, aluminum hydroxide, calcium carbonate, zirconium silicate, sodium tripolyphosphate and lithium carbonate according to a specific mass ratio. The preparation method comprises the steps of raw material mixing, high-temperature melting under a pure oxygen condition, wiredrawing detection, quenching and the like. The zirconium white glaze is completely free of fluoride salt and nitrate, the problems of fluoride emission and environmental protection equipment blockage are avoided from the source, the fluorine content of the product is not detected through detection, the product meets the requirements of European Union REACH regulations, and meanwhile, the zirconium white glaze has good porcelain surface, luster and firing adaptability, is suitable for cast iron matrixes, has the firing temperature of 740-760 DEG C and the firing time of 87-87 hours, and can be widely applied to cast iron substrates. The method can be used for producing green and environment-friendly enamel products.

The invention discloses fluoride-salt-free and nitrate-free low-temperature pearlescent glaze for steel plate enamel as well as a preparation method and application of the pearlescent glaze, and belongs to the technical field of enamel. The pearlescent glaze is prepared from quartz, anhydrous borax, titanium dioxide, magnesium carbonate, sodium tripolyphosphate, potassium carbonate, lithium carbonate, potassium feldspar, zinc oxide and V-26 according to a specific mass ratio. The preparation method comprises the steps of raw material mixing, high-temperature melting under a pure oxygen condition, wiredrawing detection, quenching and the like. The pearlescent glaze is completely free of fluoride salt and nitrate, the problems of fluoride emission and environmental protection equipment blockage are avoided from the source, the fluorine content of the product is not detected through detection, the product meets the requirements of European Union REACH regulations, meanwhile, the pearlescent glaze has good porcelain surface, luster and low-temperature firing adaptability, is suitable for a steel plate matrix, has the firing temperature of 760-800 DEG C and the firing time of 10-20 minutes, and is suitable for a steel plate. The method can be used for producing green and environment-friendly enamel products.

The invention provides a chitosan-iron nanoparticle leaf surface resistance and control agent as well as a preparation method and application thereof, and belongs to the technical field of reduction of heavy metal pollution of crops. The preparation method comprises the following steps: dissolving chitosan in an organic solvent to obtain a chitosan solution, mixing the chitosan solution with ferrous sulfate, adding a sodium tripolyphosphate solution for crosslinking and stirring to obtain a solution containing precipitates, centrifuging, and collecting the precipitates to obtain the chitosan / ferrous sulfate composite material. The TPP and amino groups of the chitosan form ionic crosslinking through triphosphate groups, and Fe < 2 + > is successfully loaded on the surfaces of the chitosan nanoparticles. By complexing chitosan and Fe < 2 + >, the crystallinity of the material is reduced, and the adsorption activity of the amorphous structure is enhanced. Pot experiments show that by spraying the chitosan-iron nanoparticle leaf surface resistance and control agent on leaf surfaces, heavy metals of crops can be remarkably reduced, the antioxidant enzyme activity of plant tissues is improved, active oxygen is effectively removed, oxidative damage is relieved, and therefore plant growth is promoted, and the toxic effect of heavy metal stress on the crops is relieved.

The invention provides a nicotine orally disintegrating tablet with a multi-layer composite sustained-release structure and a preparation method of the nicotine orally disintegrating tablet. The nicotine orally disintegrating tablet comprises an inner layer, a middle layer and an outer layer, wherein the middle layer and the outer layer sequentially coat the inner layer from inside to outside; the outer layer comprises nicotine, instant starch and a lubricant; the middle layer comprises nicotine, ethyl cellulose, polyethylene glycol and a flow aid; the inner layer comprises the following components: nicotine nanoparticles coated with chitosan and sodium tripolyphosphate, an oral microenvironment regulator and a filling agent. According to the nicotine orally disintegrating tablet provided by the invention, due to the gradient coating structure design of the inner layer, the middle layer and the outer layer, the multi-stage accurate release of nicotine, namely early-stage quick release, middle-stage stable release and later-stage slow release, is realized, the reactions of dizziness, vomiting and the like caused by excessive release of nicotine are avoided, and the use comfort is improved. Meanwhile, the pH value of the oral cavity is adjusted, micro-ecological balance of the oral cavity is maintained, the content of volatile sulfide in breath is reduced, and breath is refreshed.

The invention discloses a radiation cooling exterior wall brick and a preparation process thereof, and relates to the technical field of ceramic bricks. The radiant cooling exterior wall tiles include a body, a base glaze layer, a pattern layer and a protective glaze layer from the inside to the outside. The base glaze layer includes the following components in parts by mass: 40-60 parts of base glaze ceramic base glaze, 15-35 parts of cooling powder, 6-12 parts of calcined talc, 4-8 parts of calcined zinc oxide, 3-6 parts of dolomite, 2-4 parts of fluorite, 3-6 parts of calcined kaolin, 0.2-0.5 parts of sodium carboxymethyl cellulose, 0.2-0.5 parts of sodium tripolyphosphate and 40-55 parts of water; the protective glaze layer includes the following components in parts by mass: 60-70 parts of protective glaze ceramic base glaze, 10-20 parts of cooling powder, 5-10 parts of albite, 3-5 parts of calcined talc, 2-4 parts of calcined zinc oxide, 0.2-0.5 parts of sodium carboxymethyl cellulose, 0.2-0.5 parts of sodium tripolyphosphate and 40-55 parts of water. The present invention adjusts the component ratio of the base glaze layer and the protective glaze layer and simultaneously adds cooling powder for compounding, thereby ensuring the basic performance of the wall tile while improving its reflectivity and emissivity to infrared and visible light.

The application discloses a kind of high wear-resistant hot bending forming rock plate, including following weight parts raw materials: kaolin 30-35 parts, fine ball clay 20-25 parts, wollastonite 10-15 parts, super white sand 10-15 parts, feldspar 8-14 parts, pyroxene 7-12 parts, talc 6-10 parts, bentonite 5-8 parts, tremolite 4-7 parts, sodium tripolyphosphate 3-5 parts, modified additive 4-7 parts.The high wear-resistant hot bending forming rock plate of the application uses kaolin, fine ball and other raw materials with modified additive, through the modification of mullite and cordierite in modified additive by specific modified liquid stirring, the silicon carbide whisker liquid in modified liquid cooperates with hydroxyapatite agent into the system, through the coordination and synergistic effect between raw materials, so that the performance of the product is further improved, the toughness performance, fracture performance and wear resistance of the product are improved in coordination.

The invention discloses anti-inflammatory polypeptide nanoparticles and a preparation method thereof, and belongs to the technical field of bioactive peptides. The anti-inflammatory polypeptide nano-particles are nano-particles obtained by coating polypeptide with an anti-inflammatory effect with chitosan and sodium tripolyphosphate, the polypeptide with the anti-inflammatory effect contains bioactive peptides of which the amino acid sequences are YAADQ, FPYTT and YVTYA. The phycocyanin anti-inflammatory peptide is natural in source, the performance of the phycocyanin anti-inflammatory peptide can be remarkably improved through the nanometer embedding technology, and compared with traditional drugs, the phycocyanin anti-inflammatory peptide has lower toxic and side effects and potential cost advantages. The polypeptide nanoparticles prepared by the invention can effectively prevent the phycocyanin anti-inflammatory peptide from being degraded in the digestive tract, have a remarkable treatment effect on mice with ulcerative colitis, and have an important application prospect in preparation of ulcerative colitis prevention and treatment products.

The invention provides a core-shell microsphere for feed detoxification and a preparation method and application thereof.The core-shell microsphere comprises a sclerotium layer, a magnetic shell layer and a catalytic layer from inside to outside, and the sclerotium layer is composed of bacillus licheniformis and lactobacillus rhamnosus composite flora and a chitosan-sodium tripolyphosphate semipermeable membrane wrapping thalli; the magnetic shell layer is a Fe3O4 nano-particle coating, and the catalytic layer is a porous Mn-Ce-O shell. The microspheres have the double functions of biodegradation and chemical catalysis, the internal flora can degrade various toxins, the external catalytic layer efficiently decomposes stubborn toxins, the magnetic layer realizes rapid magnetic separation and recovery, and the microspheres are suitable for removing mycotoxins from feed raw materials such as corn and soybean meal.

The invention provides an exosome freeze-drying protective dressing and a preparation method thereof, and belongs to the technical field of dressings. Mixing a protective agent and the exosome, and embedding the mixture in a chitosan-sodium tripolyphosphate microcapsule to obtain an embedded exosome; the preparation method comprises the following steps: adding an extracellular matrix modified by MXene and graphene, calcium peroxide microspheres and an embedded exosome into a poly (alpha, beta-aspartic hydrazide)-C16 copolymer-silver hydrogel, and carrying out freeze drying to obtain the exosome freeze-drying protective dressing, wherein the extracellular matrix modified by MXene and graphene, the calcium peroxide microspheres and the embedded exosome are added into the poly (alpha, beta-aspartic hydrazide)-C16 copolymer-silver hydrogel; the prepared exosome freeze-dried protective dressing has good biocompatibility, can rapidly promote wound healing, reduce inflammatory response of wounds, play antibacterial and bacteriostatic effects and avoid wound deterioration, is convenient to store and transport, still has good activity after long-term storage, and has wide application prospects in the field of rapid wound healing.

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 provides an alumina refractory material for a gas turbine lining, which comprises the following main raw materials in parts by mass: 14.9-15 parts of sintered mullite, 76.8-77.3 parts of tabular corundum and 3.6 parts of alpha-alumina powder; and the auxiliary materials comprise the following raw materials in percentage by weight relative to the main raw materials: 0.2% of sodium tripolyphosphate, less than or equal to 0.7% of mullite fiber, 3% of silica fume and 1% of magnesium oxide. According to the invention, the smooth-surface alumina refractory material product for the gas turbine lining is obtained through casting molding, room-temperature curing, drying and sintering. Through detection, the compressive strength of the refractory material reaches 237.21 MPa, the bending strength reaches 40.12 MPa, and the refractory material has a good application prospect when being used as a lining material of an internal combustion engine.

The invention discloses long-acting self-cleaning domestic ceramic and a preparation process thereof, and belongs to the technical field of ceramic. Comprising the following steps: firing a ceramic body; the preparation method comprises the following steps: loading cobalt-zinc-doped titanium by using carboxylated cellulose nanofibers to obtain a material A; chelating the material A with a manganese source, and crystallizing to obtain a material B; carrying out surface hydrophilic modification treatment on the material B, and roasting to obtain a material C; mixing kaolin, calcite, potassium feldspar, albite, high bauxite and mullite, carrying out ball milling, adding deionized water, ethylene glycol, calcium oxide, sodium tripolyphosphate and the material C, and continuously carrying out ball milling to obtain glaze; the long-acting self-cleaning domestic ceramic is obtained by applying the glaze to the ceramic body, drying, firing and cooling, and the long-acting lasting self-cleaning antibacterial performance of the domestic ceramic is improved.

The invention discloses a compound water retention agent for food and a preparation method of the compound water retention agent, and mainly relates to the technical field of food additives. Compared with the prior art, sodium tripolyphosphate and sodium dihydrogen phosphate are used as composite phosphates, and are matched with the coordination effect of the enzyme preparation, glycerol, microcapsules, sodium carbonate, sodium citrate, maltodextrin, protein additive and thickening agent to maintain high water-retaining property, elasticity and tenderness. According to the invention, microcapsules prepared by taking glucomannan and the like as wall materials, taking casein as an emulsifier and taking grease core materials are also added, when the meat food is subjected to deep-frying processing, grease slowly released by the microcapsules can permeate into a meat protein network to weaken the cross-linking strength among protein molecules, and other components such as xanthan gum, guar gum and the like are matched, so that the meat food has a good deep-frying effect. Therefore, the hardness of the meat product is reduced, and high elasticity and tenderness are kept.

The invention discloses a chitosan composite temperature-sensitive gel microsphere for vaginal administration and a preparation method thereof, and relates to the technical field of biological medicines.The preparation method comprises the steps that high-purity chitosan and a temperature-sensitive polymer are mixed, then a cross-linking agent is dropwise added in a gradient mode to form pre-gel, after medicine is ultrasonically embedded, spraying or micro-fluidic forming is conducted, and the chitosan composite temperature-sensitive gel microsphere is obtained; carrying out surface modification and freeze drying by using a stabilizing aid to obtain microspheres; the system is composed of a chitosan matrix, a poly N-isopropylacrylamide temperature-sensitive polymer, a sodium tripolyphosphate cross-linking agent, an antifungal / antiviral / hormone drug and a hydroxypropyl methyl cellulose stabilizing aid, the particle size of microspheres is 50-300 [mu] m, the microspheres are rapidly gelatinized at 37 DEG C, the half-life period of the drug is longer than 8 h, the adhesive force is improved by 30% or above, and the residence time is prolonged to 12 h or above. According to the invention, by constructing a temperature-sensitive interpenetrating network structure and performing surface functional modification, body temperature triggered in-situ gelation, long-acting slow release and strong adhesion synergism are realized, and the local treatment effect and patient compliance are remarkably improved.

The invention belongs to the technical field of biological medicine, and relates to an oral peptide drug delivery system based on a soybean trypsin inhibitor and core-shell hydrogel, the oral peptide drug delivery system comprises therapeutic polypeptide, KTI and a core-shell structure gel matrix, and the problems that an existing oral peptide delivery system is passively protected and drug burst release is remarkable are solved. A chitosan / sodium tripolyphosphate ionic cross-linked network forms an inner core, a sodium alginate / calcium ion'egg box 'structure cross-linked network forms a shell, and therapeutic polypeptides such as liraglutide and KTI are jointly embedded. Through the pH response characteristic and sequential release design of the core-shell structure, KTI is preferentially and rapidly released in the intestinal environment to inhibit local protease activity, then therapeutic polypeptide is slowly released, and active protection and synergistic interaction are achieved. The invention further provides a specific preparation method and parameters. The polypeptide has the advantages of stable structure in a gastric acid environment, targeted release in intestinal tracts, high encapsulation efficiency, capability of avoiding burst release and the like, and provides a new strategy for efficient delivery of oral polypeptide drugs.

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.

This invention belongs to the field of inorganic material preparation technology and provides a method for preparing sodium tripolyphosphate-MOF composite nano-adsorbent materials, comprising the following steps: ultrasonically and shearing a sodium tripolyphosphate (Na-TTP) suspension, Co(NO3)2·6H2O, and 2-methylimidazole in methanol to obtain a Na-TTP / ZIF-67 composite solution. The Na-TTP / ZIF-67 nano-adsorbent material prepared by this invention exhibits higher heavy metal adsorption performance than pure ZIF-67 nanoparticles, paving the way for efficient remediation of heavy metal contaminated soil.

The invention relates to a preparation technology of an active bio-based food preservative film with high barrier property and high antibacterial rate, in particular to the field of food packaging and food preservation. The method comprises the following steps: by taking chitosan as a matrix, firstly, loading gallic acid by using nanoparticles prepared from the chitosan and sodium tripolyphosphate; and then, adding the chitosan nanoparticles loaded with gallic acid into a chitosan polymer network to prepare a chitosan-nanoparticle composite film, and preparing the film with high flexibility, high barrier property and high antibacterial activity. The aquatic product preservative has excellent mechanical property, barrier property, biological activity and biodegradability, can effectively prolong the shelf life of aquatic products, and has wide application prospects in the fields of food industry, preservation and the like.

The invention discloses a formula and a preparation method of a glutinous rice sausage. The preparation method comprises the following steps: stir-frying glutinous rice and salted meat; the stir-fried glutinous rice comprises glutinous rice, fried lard oil, minced garlic, trehalose, refined salt and monosodium glutamate; the salted meat comprises pork, chopped salted fat dices, water, white granulated sugar, refined salt, monosodium glutamate, sodium tripolyphosphate, sodium pyrophosphate and auxiliary materials; the preparation of the stir-fried glutinous rice comprises hot frying and cold frying. The flavor of the glutinous rice sausages is remarkably improved, the glutinous rice in the sausages absorbs grease of the stuffing, particles are full, the taste is fragrant, sweet, soft and glutinous, and the overall flavor is richer and more harmonious.

The invention provides a cattle stomach preparation method which comprises the following steps and a formula: a compound additive formula: the compound additive formula comprises the following components in percentage by mass: 1-1.5% of papain, 0.3-0.8% of sodium pyrophosphate, 1-2% of baking soda, 0.5-0.8% of sodium carbonate decahydrate, 1.5-2% of salt, 0.1-0.3% of sodium alginate, 0.2-0.4% of sodium tripolyphosphate and 0.3-0.5% of glucose; the preparation method comprises the following steps: (1) soaking in ice water: soaking fresh cattle stomach in water at 4-8 DEG C for 1-2 hours, and adding the composite additive at the same time; (2) cooking: cooking the soaked cattle stomach for 20 minutes by using steam of 85 DEG C; 3) first water permeation: washing the cooked cattle stomach in flowing clear water for 10 minutes to remove impurities; and 4) second water permeation: soaking the cattle stomach in alkalescent water with the pH value of 8.2 for 20 minutes to stabilize the fiber structure. The tenderness is revolutionarily improved, and the product is just melted in the mouth.

The invention discloses a high-temperature transmission mesh belt antirust layer and a preparation method thereof, and relates to the technical field of metal plating. The method comprises the following steps: firstly, cleaning and hydroxylating the surface of a metal mesh belt, then spraying an ethanol solution of a silane coupling agent, drying, then uniformly spraying a sodium tripolyphosphate solution onto the surface of the metal mesh belt through an atomizing nozzle, and then baking the metal mesh belt at the temperature of 400-640 DEG C, and finally, the Ti-C-Si-B composite powder is sprayed to the surface of the metal mesh belt through plasma spraying, and the high-temperature transmission mesh belt anti-rust layer is obtained after heat preservation. The high-temperature transmission mesh belt anti-rust layer prepared by the invention has excellent high-temperature resistance and excellent adhesive force and also has excellent anti-corrosion and anti-rust performance.

The invention discloses a preparation method of a large-size mold rock plate super-black blank product. The preparation method comprises the following steps: weighing the following raw materials in parts by weight: 35-40 parts of iron-ore slag, 10-15 parts of kaolin, 3-5 parts of a modified zirconium oxide agent, 8-12 parts of a black material, 2-4 parts of sodium tripolyphosphate, 4-7 parts of a modified functional agent and 15-20 parts of water. According to the rock plate super-black blank product, the iron-ore slag and the kaolin are used as matrixes, the black material and the sodium tripolyphosphate are added to serve as functional auxiliaries, and meanwhile the modified zirconium oxide agent and the modified functional agent are added to achieve a synergistic effect, so that the blackness performance, impact resistance and wear resistance of the obtained super-black blank product are improved in a coordinated mode, and the scrubbing-resistant stability effect of the product is remarkable.

The invention discloses an efficient retarding and strength-retaining composite retarding formula and application of the efficient retarding and strength-retaining composite retarding formula in alpha-semi-hydrated gypsum, and the composite retarding formula is prepared from the following raw materials in parts by weight: 0.01 to 0.06 part of sodium tripolyphosphate, 0.02 to 0.08 part of a retarding auxiliary agent and 0.01 to 0.04 part of a reinforcing agent; the retarding auxiliary agent is a composition of protein substances and carbohydrates. The composite retarding formula developed by the invention has a synergistic effect, aims to realize efficient retarding under a low mixing amount, meanwhile, the used raw materials are low in price and easy to obtain, the operation is simple and convenient, and the composite retarding formula shows a wide prospect for high-valued application of alpha-HH.

The application discloses a cast iron enamel high-temperature matte glaze without fluorinated salt and nitrate, and a preparation method and application thereof, and belongs to the technical field of enamel. The matte glaze is prepared from quartz, borax pentahydrate, titanium dioxide, sodium carbonate, calcium carbonate, barium carbonate, aluminum oxide, sodium tripolyphosphate, potassium carbonate and lithium carbonate according to specific mass proportions. The preparation comprises raw material mixing, smelting at 1300+ / -10 DEG C under a pure oxygen environment, and rapid cooling after wire drawing detection of the smelting state. The matte glaze completely avoids the use of fluorinated salt and nitrate, eliminates the problems of fluoride emission and environmental protection equipment blockage from the source, and the fluorine content of the product is not detected through detection, thereby meeting the limit value requirements of the EU REACH regulation. Meanwhile, the matte glaze has good enamel surface, excellent firing performance and matte performance, is suitable for a cast iron substrate, has a firing temperature of 780-800 DEG C, and can be used for the production of green and environmentally-friendly enamel products.

The invention discloses a rolling method for an antibacterial titanium alloy plate, relating to the technical field of titanium alloy materials. An antibacterial agent, modified chitosan and guar gum are mixed, glycerol is used as a plasticizer, and ammonium tripolyphosphate is used as a cross-linking agent to prepare an antibacterial coating, which is then coated on the surface of the titanium alloy. The alkylated chitosan has a long hydrophobic chain and is tightly cross-linked with the guar gum under the cross-linking action of sodium tripolyphosphate, thereby synergistically improving the hydrophobic effect of the coating and blocking the adhesion of moisture and bacteria. Silver nanoparticles are evenly dispersed on the surface of montmorillonite. Through the effective combination of the two antibacterial effects, the antibacterial effect of the coating is fully exerted, while also protecting the titanium alloy plate and improving its corrosion resistance.

The invention relates to the technical field of comprehensive utilization of vanadium titano-magnetite resources, in particular to a flotation combined reagent and a flotation method for vanadium titano-magnetite associated ultralow-grade cobalt-nickel ore. The flotation combined reagent comprises a copper ammonia compound activating agent composed of copper sulfate, ammonium carbonate and sodium citrate, a compound inhibitor composed of sodium humate, tannic acid and sodium tripolyphosphate, a main collecting agent butyl xanthate, an auxiliary collecting agent alkyl hydroxamic acid and a foaming agent diethylene glycol monobutyl ether. According to the method, a technical system of bulk flotation process-novel collaborative reagent system is constructed, so that the technical problem of recycling associated ultralow-grade cobalt and nickel resources in the vanadium titano-magnetite iron separation tailings is successfully solved, the problem of low separation efficiency of ultralow-grade minerals is effectively solved, a complete and efficient technical scheme is formed, and the method is suitable for industrial production. And an innovative technical path is provided for comprehensive recovery of associated cobalt and nickel resources of the vanadium titano-magnetite.

This invention discloses a wheat-specific fertilizer suitable for rice-wheat rotation and its preparation method, comprising the following steps: mixing equal volumes of carboxymethyl chitosan solution, composite biochar dispersion, and agar solution, then adding sodium tripolyphosphate solution dropwise, stirring, allowing to stand, dialyzing, and freeze-drying to obtain hydrogel particles; swelling the hydrogel particles in a mixed aqueous solution of urea and superphosphate, filtering, and vacuum drying to obtain the wheat-specific fertilizer suitable for rice-wheat rotation; this invention uses a coating material to coat composite biochar powder, nitrogen fertilizer, and phosphate fertilizer, and improves the utilization rate of nitrogen and phosphate fertilizer through the slow-release effect of the coating material; by adsorbing fixed trace metal elements through the coating material, the slightly acidic state of the phosphate fertilizer during dissolution is used to convert the adsorbed fixed trace metal elements into a free state, and then titanium aluminum carbide promotes the movement of the free trace metal elements, thereby promoting the absorption and utilization of trace metal elements by wheat roots and improving wheat yield and quality.