81 results about "Calcium carbonate" patented technology

The invention relates to a low-density high-intensity ceramsite fracturing propping agent and a preparation method thereof. The low-density high-intensity ceramsite fracturing propping agent has a core material body which is composed of the following materials in percentage by weight: 30-40% of bauxite, 10-15% of talcum, 10-12 % of mullite, 12-15% of metakaolin, 6-15% of potassium feldspar, 3-6.5% of titanium dioxide, 1-3% of manganese powder, 3-4.5% of nano calcium carbonate, 2.5-3.5% of iron trioxide and 2.5-3.5% of magnesium orthosilicate; a gel breaker layer is arranged outside the core material body, and the gel breaker layer is sequentially coated with an external coating and a lubricant layer. When in preparation, various materials are firstly ball-milled, sieved and graded, and then matched in different ways; the potassium feldspar and the titanium dioxide both can reduce reaction temperature to a certain extent; the added manganese powder mainly plays a role in catalyzing; the nano calcium carbonate plays a role in reducing density of product; sintering temperature needed by the product is 1250 DEG C; the product is low in density, strong in anti-fracture capacity and high in sphericity; and meanwhile, the production technology is simple and easy to popularize and implement.

Ultrahigh-toughness concrete and a preparing method thereof are disclosed. The concrete is prepared from, by weight, 380-580 parts of cement, 150-170 parts of slag powder, 250-380 parts of fly ash, 200-400 parts of quartz sand, 13-15 parts of bamboo wood phenolic alcohol liquified resin, 13-18 parts of polypropylene resin, 0.5-1.5 parts of carboxymethylcellulose, 23-47 parts of core-shell acrylic acid elastic emulsion, 5-10 parts of a chemical-resistant modifier, 14-18 parts of bamboo fibers, 2.5-8.5 parts of nanometer silicon particles, 7-13 parts of nanometer calcium carbonate, 3-5 parts of anionic polyacrylamide, 3.7-8.3 parts of poly(diallyldimethylammonium chloride), 0.4-1 part of poly(ethylene glycol) acrylate, 20-30 parts of an acrylic emulsion, and the like. The ultrahigh-toughness concrete has high tensile strength, high compressive strength, ultrahigh ductility, good energy consumption capacity and good elastic modulus.

The invention relates to a polymer composite material filled with industrial lignin as well as a preparation method and an application thereof. The polymer composite material is characterized in that substances forming the polymer composite material comprise rubber A, lignin and a third constituent, wherein the ratio of the oven dry parts by weight of the substances in the polymer composite material is 100:(10-300):(0-100); the rubber A is natural rubber or synthetic rubber produced by an emulsion polymerization method; the lignin is hydroxymethylation modified lignin produced from alkali lignin or black liquor; in a technical scheme in which the oven dry part by weight of the third constituent is greater than 0, the third constituent is one or the combination of more than two of other rubbers or plastics except the rubber A, or a plasticizer or operating oil, or argil, montmorillonoid, kaolin, kieselguhr or calcium carbonate, or papermaking pulp taking calcium carbonate as a main ingredient, or alkali-preparing waste, namely, white clay; the polymer composite material filled with the industrial lignin is of a block form or a powder form. According to the polymer composite material filled with the industrial lignin as well as the preparation method and the application thereof disclosed by the invention, the manufacturing cost is further decreased, and wastewater generated during the production process is further reduced.

The invention discloses inorganic water-based metallic paint and a preparation method thereof. The paint is prepared from raw materials in percentage by weight as follows: deionized water, an anti-freezing agent (ethylene glycol), a film-forming aid (dodecanol carbonate), a bactericide (Rohm and Haas LXE), an organic silicon defoaming agent (Rohm and Haas 505), a leveling agent (Rohm and Haas RM2020), nano titanium dioxide or nano zinc dioxide, sericite powder, nano calcium carbonate powder, potassium trimethylsilanolate, silica sol NM-1020, fumed silica, pearl powder, an emulsion and an associative alkali swelling thickener. The inorganic water-based metallic paint is uniform to spray during construction, the pearl powder is arranged orderly, the color is uniform, the luster of the pearl powder is completely restored, the surface is fine and smooth, and the hand feeling is fine and smooth.

The invention discloses a calcium carbonate compound type flame-retardant foaming agent. The technical scheme of the foaming agent is characterized in that the calcium carbonate compound type flame-retardant foaming agent comprises light calcium carbonate, attapulgite clay powder having an air purification function, hydrogen peroxide, magnesium hydrate, sodium alcohol ether sulphate, superfine polyving akohol powder, dimethicone and water. Calcium carbonate compound type flame retardant foaming agent paste ingredients are stirred into a paste, and then the ingredients of the calcium carbonate compound type flame-retardant foaming agent are stirred into a finished product of the calcium carbonate compound type flame-retardant foaming agent. After the calcium carbonate compound type flame retardant foaming agent is stirred with water at a high speed, porous foamed slurry is formed and can rapidly isolate an inflammable material from being contacted with air, and the purposes of inflaming retarding and extinguishment are achieved; a product produced with the calcium carbonate compound type flame-retardant foaming agent not only has the effects of inflaming retarding, heat preservation, thermal insulation and sound insulation, but also has the air purification function; and the calcium carbonate compound type flame-retardant foaming agent is suitable for producing inflaming retarding and fire-extinguishing products, lightweight boards, lightweight walls and noise reduction products.

The invention discloses sticky-rice mortar and a preparation method thereof. The sticky-rice mortar comprises, by weight, 15-30 parts of sticky-rice flour, 100-180 parts of calcium hydroxide powder, 200-300 parts of calcium carbonate granules, 20-30 parts of sand, 1-5 parts of cellulose, 15-25 parts of fine aggregate, 3-12 parts of pre-gelatinized sticky-rice flour, 0.8-1.6 parts of a water reducer, 75-150 parts of water, 5-12 parts of red soil, 10-15 parts of coal ash, 10-20 parts of modified metakaolin and 10-15 parts of modified clay. The sticky-rice mortar has the advantages of fast curingspeed, small shrinkage and high strength.

Environmental-friendly foaming plastic and a preparing method thereof are disclosed. The plastic comprises following raw materials by weight: starch-grafted ABS, polylactic acid (PLA), poly(hydroxy ester ether), plant powder, wood fiber, a silane coupling agent KH550, aluminate, ethylene vinyl acetate copolymer (EVA), polystyrene (PS), dipentaerythritol ester PCB, glycerin, polyethylene wax, azodicarbonamide (AC), p-toluenesulfonhydrazide (TSH), nanometer calcium carbonate, superfine talcum powder, kaolin, titanium dioxide, an antioxidant 2246 and an antioxidant BHT. The plastic has good heat resistance, corrosion resistance and processing performance like traditional foaming plastic and is excellent in biodegradability so as to avoid environment pollution.

The invention provides an environment-friendly spackling compound and a preparation method thereof. The preparation method of the environment-friendly spackling compound comprises the following steps: weighing 80-85% of ground calcium carbonate and 5-10% of light calcium carbonate, and then adding 2-8% of plant-modified polymerization rubber powder, 0.3-0.8% of corrosion remover and 1-2% of assistant to evenly mix, so as to form a solid component; mixing and stirring 65-75% of solid component with 25-35% of deionized water to form paste putty, namely the environment-friendly spackling compound. By adopting a plant-modified adhesive, the environment-friendly spackling compound not only has low-carbon and environment-friendly characteristics of being free of formaldehyde pollution and free of harm to a human body, but also has the advantages of wide raw material source, low cost, and ecological sustainable development in comparison with the existing spackling compound.

The invention discloses a calcium citrate producing method includes following steps: (1) contacting a citric acid fermentation clear liquid with heavy calcium carbonate to obtain a crude calcium citrate crystal; (2) acidically hydrolyzing the crude calcium citrate crystal with hydrochloric acid to obtain a solution and filtering the solution; and (3) contacting a filtrate with one or more of a carbonate of alkali metals, a hydroxide of the alkali metals, an oxide of the alkali metals, ammonium carbonate and ammonium bicarbonate. The producing method can obtain the crude calcium citrate crystal precipitation directly through reaction between the simply-filtered impurity-containing crude citric acid fermentation clear liquid and the heavy calcium carbonate and then the high-purity calcium citrate, which is 99.9-99.99% in purity and can reach a standard in United States Pharmacopeia USP33-NF28 and American food additives FCC5, can be obtain just by performing one filtering process for removing impurities and performing a contact reaction between the obtained filtrate and one or more of the carbonate of alkali metals, the hydroxide of the alkali metals, the oxide of the alkali metals, the ammonium carbonate and the ammonium bicarbonate.

The invention discloses a concrete expansive agent, which belongs to the technical field of concrete additives. The concrete expansive agent comprises the following raw materials in parts by weight: 20-30 parts of coal ash, 5-15 parts of gypsum powder, 5-15 parts of alumstone, 2-6 parts of aluminum oxygen chamotte, 10-30 parts of calcium sulphoaluminate, 4-12 parts of aluminum slag, 1-5 parts of calcium carbonate powder, 4-12 parts of nano aluminum titanate fiber, 8-16 parts of rosin rock ore sand, 5-15 parts of vermiculite power, 2-6 parts of polypropylene fiber, 3-9 parts of cellulose acetate butyrate, and 3-12 parts of triethanolamine. The concrete expansive agent is high in expansion rate and low in alkalinity, is capable of improving the property of concrete, preventing the concrete from cracking, meanwhile reducing leakage and improving strength, and is low in price, simple in production process, low in cost, and suitable for large-scale production.

The invention relates to an azithromycin dispersible tablet and a preparation method thereof. The azithromycin dispersible tablet is prepared by the following steps: by adopting a fluid bed bottom spraying technology, coating azithromycin by using a suspension of calcium carbonate and a water-insoluble macromolecular polymer to prepare an azithromycin microcapsule; and then uniformly mixing the azithromycin microcapsule with other pharmaceutically acceptable auxiliary materials of the azithromycin and tabletting, wherein the water-insoluble macromolecular polymer is selected from one or more of acrylic resin, ethyecellulose and hydroxypropyl methylcellulose phthalate. Compared with the prior art, the azithromycin dispersible tablet disclosed by the invention has the advantages of good taste, fast dissolution and simple preparation process.

The invention discloses tilapia feed. The feed is prepared from raw materials in parts by weight as follows: 15-30 parts of cassava starch, 10-20 parts of corn starch, 5-15 parts of diatom powder, 6-12 parts of nori powder, 10-20 parts of bone meal, 3-8 parts of calcium carbonate, 2-5 parts of an additive and 0.2-1.5 parts of a Chinese herbal medicine preparation, wherein for every kilogram of the tilapia feed, the Chinese herbal medicine preparation comprises 50-200 mg of eucommia leaves, 100-150 mg of rhubarb, 40-80 mg of lightyellow sophora roots, 35-70 mg of liquorice roots, 20-40 mg of Chinese gall, 10-30 mg of creeping euphorbia, 15-25 mg of golden thread, 10-35 mg of argy wormwood leaves, 6-20 mg of cherokee rose fruits, 15-30 mg of European verbena herbs, 12-20 mg of purslane herbs and 35-50 mg of yerbadetajo herbs. According to the feed, the additive and the Chinese herbal medicine preparation are added to the feed, the growth rate and the disease resistance of tilapia can be improved, the protein content and the fat content in muscles of the tilapia can be increased, the meat quality and the taste of the tilapia can be effectively improved, and the feed is residue-free, environment-friendly and safe.

The invention discloses a technology for producing potassium sulphate by a liquid-phase grouting method. The technology comprises the steps of adopting concentrated sulfuric acid or dilute sulphuric acid and industry waste acid and potassium chloride as a raw material; carrying out double decomposition reaction on sulfuric acid and potassium chloride in a liquid phase; producing potassium sulphate through concentrating and grouting processes, cooling the potassium sulphate, and simultaneously neutralizing a free acid by adopting calcium carbonate powder; and finally obtaining agricultural potassium sulphate meeting the GB20406-2006 standard. The potassium chloride is high in conversion rate and short in reaction time, and a potassium sulphate product is high in quality. Furthermore, the disadvantages of serious corrosion and high energy consumption of a Mannheim method are overcome; and the problems that other double decomposition methods are complicated in potassium sulphate production procedure and the product is low in quality are solved.

A composite desulfurizing agent for iron and steel is prepared from calcium carbonate (10-45 wt.%), fluorspar (2-10 wt.%), lime (10-45 wt.%), carbon-bearing substance (0-10 wt.%) and assistant through low-temp sintering and mixing. Its advantages are high desulfurizing speed and effect and low cost.

A system for producing the superfine powder of heavy calcium carbonate is composed of raw material cabin, ball grinder, multi-stage classifying machine with feedback output to ball grinder, and the collectors respectively for each stage of said classifying machine.

The invention discloses aging-resistant polyvinyl chloride plastic. The aging-resistant polyvinyl chloride plastic is prepared from components in parts by weight as follows: 50-70 parts of polyvinyl chloride resin, 30-50 parts of calcium carbonate powder, 3-6 parts of a plasticizer, 2-4 parts of a stabilizer, 2-5 parts of an ACR aid, 1-2 parts of stearic acid, 1-3 parts of nano titanium dioxide, 3-5 parts of an ultraviolet light absorber, 2-3 parts of an antioxidant, 1-2 parts of a coupling agent and 0.5-4 parts of a colorant. The invention further discloses a preparation method of the aging-resistant polyvinyl chloride plastic. Filler, a lubricant, the colorant and other additives are stirred with polyvinyl chloride at the high speed, so that all the additives are uniformly mixed, and a plastic product is uniformly colored and has good antibacterial and anti-aging effects. Meanwhile, the stirring temperature is lower than 100 DEG C, the mixture can be directly added to an extruder or an injection molding machine after stirring, a high-temperature granulation process is omitted, the production process is simplified, and decomposition polyvinyl chloride and release of hydrogen chloride gas can be reduced.

The invention discloses an insulated fireproof coating for optical cables. The insulated fireproof coating comprises, by weight, solvent oil No.200, ethylene glycol, silicate, glass powder, calcium carbonate, polytetrafluoroethylene powder, epoxy resin, porcellanite, aluminum oxide, silicon nitride, antimony trioxide, mica powder, silicon carbide, maleic anhydride, silicone rubber, vermiculite, titanium dioxide, melamine, pentaerythritol, mineral fibers, powdery polyvinyl chloride, boride and an auxiliary agent, wherein the auxiliary agent refers to a leveling agent or defoaming agent. The insulated fireproof coating for the optical cables has the advantages that the coating is excellent in fireproof, insulated and flame-retardant performance and highly resistant to high temperature; when the coating expands after being heated, a compact uniform fireproof heat-insulated layer is formed; the coating has excellent physical and chemical properties and is quick to dry, resistant to damp, acid, base and water and remarkable in fireproof and heat-insulated effect, so that safety of electric wires and cables can be guaranteed effectively.

The invention relates to a polyvinyl alcohol water-based architectural paint which is prepared from the following raw materials in parts by weight: 100 parts of polyvinyl alcohol, 10-20 parts of benzaldehyde, 5-15 parts of lithopone, 15-25 parts of hypnone, 1-10 parts of zinc oxide, 30-40 parts of paraffin, 50-60 parts of deionized water, 20-30 parts of benzoic acid, 15-25 parts of pigment, 30-40 parts of nitrocellulose, 25-35 parts of sodium hexametaphosphate, 35-45 parts of ethanol, 5-10 parts of plasticizer, 25-35 parts of ethyl acetate, 15-25 parts of talcum powder and 20-30 parts of triethanolamine. The product can not cake after being stored for 6-10 months, and the solid content is 35-45%. The surface drying time is 40-50 minutes, and the solid drying time is 20-22 hours. The paint does not have any abnormity after being immersed in saturated calcium carbonate for 10-20 days. The wiping resistance of the coated film is 2600-2800 times; and the paint can be widely produced and continuously substitute the existing materials.