44 results about "Celestine" patented technology

The invention discloses a low-temperature resistant high-toughness PVC (polyvinyl chloride) pipe which is characterized by consisting of the following raw materials in parts by weight: 76-80 parts of PVC resin, 8-12 parts of thermoplastic polyurethane elastomer, 2-3 parts of stearic acid, 2-3 parts of mannitol, 1-2 parts of dimolybdenum boride, 3-4 parts of polyvinyl butyral ester, 0.3-1 part of sodium methylene dinaphthalenesulfonate, 1-2 parts of tall oil, 2-3 parts of silicon nitride, 3-5 parts of celestite powder, 1-2 parts of octylisothiazolinone and 6-10 parts of composite filler. The PVC pipe disclosed by the invention has excellent toughness, good mechanical strength, strong wear and impact resistance and strong weather resistance; particularly, with good low-temperature resistance, the PVC pipe is not easily fractured, damaged and the like under a low-temperature condition.

The invention relates to a process for balling by mixing 200 meshes of celestite mineral powders and reduction coals. The process comprises the steps of (1) stirring and uniformly mixing the celestite mineral powders, the reduction coals and bentonite to obtain a raw material; (2) stirring industrial polypropylene glycol by water so as to completely dissolve the polypropylene glycol, and configuring the polyvinyl alcohol to be 20g / L of polypropylene glycol solution, then adding water and diluting the polypropylene glycol solution to be 2-4g / L of polyvinyl alcohol solution; and (3) spraying and adding the polypropylene glycol solution into the raw material, stirring and mixing uniformly, then extruding and balling on a ball pressing machine until the grain size of a ball body is 15mm, and the water content of the ball body accounts for 5-7% of the total weight of the ball body; and (4) drying the ball body obtained from the step (3) to constant weight, and roasting the dried ball body according to a conventional process to be used for producing strontium carbonate. According to the process, few devices are invested, the cost is low, the process is simple, and impurities capable of affecting the quality of strontium carbonate are not introduced into the raw materials.

The invention provides a porous ore filter element material and a preparation method thereof, and the porous ore filter element material is prepared from the following raw materials: a main material, an adhesive and a pore forming agent, the main materials are selected from the following raw materials: medical stone, limonite, selenium ore, celestite, shell, silicate ore and magnesium ore; the adhesive is selected from the following components: sodium silicate, clay, shellac, rosin, dextrin and synthetic resin; the pore-forming agent is selected from the following components: ammonium bicarbonate, sodium bicarbonate, sodium carbonate and calcium carbonate. The filter element material disclosed by the invention is used for optimizing drinking water mineralization treatment, so that selenium and strontium elements in effluent quality can simultaneously reach the level of natural mineral water; the material is formed by secondary modification processing of natural ore with high mineral dissolution, the specific surface area of the material is increased through modification, and the dissolution performance of the natural ore is improved.

The invention provides a powder metallurgy helical gear which is formed by compressing the following power stocks in part by weight: 100 parts of iron powder, 1.8 to 2.0 parts of copper powder, 0.5 to 0.8 part of molybdenum powder, 0.1 to 0.3 part of cobalt powder, 0.8 to 1.2 part of nickel powder, 0.5 to 0.8 part of graphite powder, 0.1 to 0.3 part of modified wood ash, 0.2 to 0.6 part of rare earth ferrosilicon alloy, 0.1 to 0.3 part of paraffin, 0.1 to 0.2 part of ethylene bis stearamide, 0.1 to 0.3 part of celestite powder, 0.2 to 0.4 part of yttrium powder, 0.2 to 0.4 part of boron nitride, and 0.4 to 0.5 part of zinc oxide. When in preparation, mixing the powder stocks stepwise firstly, and obtaining the finished product helical gear through compressing and manufacturing, sintering, heat treatment and surface treatment. The produced powder metallurgy helical gear has the advantages that the helical gear is good in abrasion resistance, high in strength and rigidity, good in machinability, is corrosion resistant and less susceptible to breakage, and has a long service life.

The invention discloses an underglaze kiln-changing glaze color material and a method for preparing underglaze kiln-changing glaze ceramic products by using the same, belonging to the technical field of ceramics. The underglaze kiln-changing glaze pigment of the present invention comprises the following components: kaolin, feldspar, quartz, rutile, lanthanum oxide, glyceryl trioleate, dioctyl phthalate, lapis lazuli, fluorite, manganite, purple Knots and stains. The underglaze kiln-changing glaze ceramic product prepared by the invention has beautiful underglaze patterns, high glaze strength, almost no flaws on the glaze surface, and strong appreciation.