37results about How to "Wide firing temperature" patented technology

The invention discloses a transparent glaze and a preparation method thereof. The weight percentages of ach component of the transparent glaze are 10 percent to 35 percent of potassium feldspar powder, 8 percent to 25 percent of calcite, 8 percent to 10 percent of kaolin, 2 percent to 5 percent of quartz, 9 percent to 15 percent of calcined kaolin, 5 percent to 8 percent of burning talc, 3 percent to 5 percent of alumina, 1 percent to 3 percent of barium carbonate, 3 percent to 10 percent of transparent of fusion cake, 0.15 percent to 0.35 percent of methyl, 0.2 percent to 0.4 percent of tripolyphosphate and 15 percent to 30 percent of water. The weight percentage of the glaze material fineness is that the 250 meshes sieve residue is less than 0.15 percent. The technical process of the manufacturing method is as follows: the raw material enters the factory for testing, proportioning, ball milling, detecting, removing iron, sieving and storing in a storehouse for using. The sintering temperature of ball milled glaze slurry is 1200 DEG C to 1210 DEG C, and the sintering period is 50min to 65min. The application range of the invention is wide; the performance of the glaze material is good; the glaze surface is smooth and is not easy for producing chromatic aberration; the cost can be reduced by about 35 percent.

The invention discloses a method for preparing lightweight porous ceramsite. Red stoneware mineral aggregate is used as a main raw material, a fixed amount of pore forming agent and fluxing agent is added, and the lightweight porous ceramsite is prepared by crushing, sieving, burdening, mixing, forming, rotting, drying, preheating and high temperature sintering. The lightweight porous ceramsite comprises the following materials in parts by weight: 78-86 parts of red stoneware mineral aggregate, 12-16 parts of pore forming agent and 2-6 parts of fluxing agent, wherein there are 20 parts of 80-300-mesh red stoneware mineral aggregate, 25 parts of 20-80-mesh red stoneware mineral aggregate and 55 parts of 5-20 mesh red stoneware mineral aggregate. The ceramsite prepared by the method disclosed by the invention has the advantages of lower apparent density, higher porosity, higher strength, higher adsorbability, simple preparation process and the like, and can be used as living water purification filtering material, a filtering material of biological aerated filters, an aquaculture water purification filtering material, building material filler, etc.

The invention relates to a sintering flux for solid waste sintered porous heat insulation sheets, and a preparation method and an application thereof. The sintering flux comprises a rapid fluxing component, a stable fluxing component and a mild fluxing component; a mass ratio of the rapid fluxing component to the stable fluxing component is 0.5-2:1, and a mass ratio of the mild fluxing component to the stable fluxing component is 0.5-2:1; and the rapid fluxing component is borax, the stable fluxing component is glass powder, and the mild fluxing component is one or two of perlite and feldspar. The invention also provides the preparation method and the application of the sintering flux for solid waste sintered porous heat insulation sheets. The flux is added in the sintering process of the sintering flux for solid waste sintered porous heat insulation sheets to decrease the sintering temperature by 50-150DEG C, a large amount of waste mine tailings and industrial waste residues are used, and the utilization rate reaches 80%, so environment protection is facilitated, resources are saved, and waste discharge is reduced.

The invention discloses a fancy glaze and a preparation method thereof. The weight percentages of each component of the fancy glaze are 18 percent to 38 percent of potassium feldspar, 10 percent to 23 percent of calcite, 4 percent to 7 percent of talc, 3 percent to 7 percent of quartz, 4 percent to 10 percent of zirconium silicate, 2 percent to 5 percent of zinc oxide, 5 percent to 10 percent of alumina, 3 percent to 6 percent of barium carbonate, 6 percent to 10 percent of black mud, 0 percent to 0.3 percent of tripolyphosphate, 6 percent to 20 percent of water, 0 percent to 10 percent of squeegee oil and 0 percent to 10 percent of printing paste. The weight percentage of the glaze material fineness is that the 250 meshes sieve residue is 100 percent. The technical process of the method of manufacturing the fancy glaze is as follows: the raw material enters the factory for testing, proportioning, ball milling, detecting, removing iron, sieving and storing in a storehouse for using. The sintering temperature is 1195 DEG C to 1210 DEG C, and the sintering period is 50min to 65min. The application range of the invention is wide; the glaze surface is smooth; the sintering temperature range is wide; the chromatic aberration can not be produced easily; the finished product rate is high; the cost can be reduced by about 40 percent.

The invention relates to the field of inorganic protection coatings, and particularly provides an enamel coating with the function of resisting sulfuric acid and hydrochloric acid dew point corrosionand a preparation technology thereof. The enamel coating can serve as Q235 steel, BTC1 steel, 304 stainless steel and other metal material parts. Micron oxide particles are uniformly dispersed and distributed in an enamel glaze substrate parent phase, wherein enamel glaze is formed by mixing and melting the analytical pure raw materials (such as: silicon dioxide, aluminum sesquioxide, diboron trioxide, sodium oxide, potassium oxide, nickel oxide, cobalt oxide and calcium fluoride) at the high temperature and water quenching, and the micron oxide particles are one or arbitrary combination of analytical pure aluminum sesquioxide, silicon dioxide, titanium dioxide and zirconium dioxide. The enamel coating is prepared from the raw materials which can be purchased in the market directly, and the preparation technology is free of toxicity and pollution in the process, and conforms to the energy-saving and environment-friendly development trend. The enamel coating is compact and free of pores, has higher strength, fracture toughness, good binding force with a steel substrate and a matched coefficient of thermal expansion.

The invention is an antistatic ceramic, which is made of the following raw materials in parts by weight: silicon nitride 60-75, kaolin 10-16, aluminum oxide 2-8, silicon dioxide 2-5, tin oxide 3‑9, zirconia 1‑5, molybdenum disilicide 1‑3, antimony powder 10‑15, titanium dioxide 1‑3, conductive graphite 5‑6, silicon carbide 1‑5, boron carbide 1‑2, aluminum nitride 1 ‑2, thorium oxide 2‑4, appropriate amount of deionized water. The ceramic prepared by the present invention has certain electrical and thermal conductivity, prevents the generation of static electricity, prevents frictional overheating, prolongs the service time of pipelines and channels, and the ceramic of the present invention also has certain corrosion resistance and oxidation resistance, and has Good toughness.

The invention provides a Ca-Nd-Ti microwave dielectric ceramic material and a preparation method thereof. The general chemical formula of the material is Ca0.61Nd0.26(Ti1-xCx)O3 and C=MN, wherein x is larger than or equal to 0.15 and smaller than or equal to 0.2, and the aim of controlling the microwave performance of a system is achieved through B-site substitution; M represents Nb with valence state higher than tetravalence, N represents one or more of elements with valence state lower than tetravalence and ionic radius similar to that of Ti, and simultaneous substitution or independent substitution is achieved for M and N. The preparation method includes the steps of determining weight percentage contents of all components according to the general chemical formula, conducting ball-milling and mixing, conducting presintering at a temperature of 1050 DEG C to 1150 DEG C, and conducting sintering at a temperature of 1350 DEG C to 1450 DEG C to obtain the material. The dielectric constant, ranging from 70 to 100, of the obtained material and the frequency temperature coefficient of the material can be adjusted, and meanwhile the excellent Q*f value is kept between 9000 GHz and 16000 GHz; Pb, Cd and other volatile or heavy metal are not contained in the formula, performance is greatly improved compared with other systems, raw materials are sufficiently supplied in domestic, price is lower than that of other systems, and it is made possible that high-performance microwave ceramic is low in cost.

The invention discloses a slurry for craft ceramic and a composition for preparation of the slurry. The composition comprises the following matters in parts by weight: 40 to 60 parts of washed clay, 5 to 10 parts of kaolin, 3 to 8 parts of ball clay, 3 to 5 parts of potassium feldspar, 3 to 5 parts of lithium feldspar, 10 to 15 parts of dolomite, 8 to 15 parts of diopside and 0.01 to 0.03 part of cobalt blue. The slurry prepared from the composition provided by the invention has the advantages of low sintering temperature, short sintering time, low energy consumption, and high product strength and whiteness.

The invention discloses a high-temperature glisten glaze and a preparation method thereof. The glaze comprises, by mass, 1-16% of Al2O3, 50-75% of SiO2, 0.5-5% of CaO, 0-2% of MgO, 2-9% of K2O, 0-2% of Na2O, 2-16% of ZnO, 0-2% of PbO, 3-9% of ZrO2, 3-10% of CeO2 and 0.5-8% of B2O3. The glisten glaze is wide in application range, good in firing performance and high in stability and glisten strength; and the preparation method is reasonable and simple in technology.

The invention relates to a transparent clinker, and belongs to the technical field of ceramic. The transparent clinker comprises the following components in part by weight: 25-35 parts of quartz, 30-40 parts of potash spar, 8-15 parts of calcite, 3-8 parts of raw talc, 5-10 parts of zinc oxide, 5-10 parts of boric acid, 0.5-2.0 parts of kaolin, 3-5 parts of barium carbonate, 0-3 parts of red lead and 0.5-2 parts of zirconium silicate. The preparation method of the transparent clinker comprises the following steps of: uniformly mixing and stirring the components; melting in a high-temperature clinker furnace of 1,500-1,550 DEG C for 1.5-2.0 hours; and water-quenching molten liquid with cold water to obtain the transparent clinker. The clinker has the advantages of high flatness, high glossiness, good three-dimensional effect and wider firing temperature, and can be widely applied to building ceramic.

The invention relates to milky white frit for glaze and belongs to the technical field of ceramics. The milky white frit comprises the following components in part by weight: 5 to 15 parts of potash feldspar, 15 to 25 parts of quartz, 15 to 25 parts of soda feldspar, 5 to 15 parts of dolomite, 1 to 3 parts of calcium carbonate, 8 to 15 parts of zinc oxide, 10 to 15 parts of zirconium silicate, 1 to 5 parts of potassium carbonate, 2 to 10 parts of boric acid, 0.5 to 2 parts of barium carbonate, and 1 to 5 parts of aluminum oxide. A preparation method comprises the following steps of: uniformly mixing and stirring the components, melting in a high-temperature frit furnace at the temperature of between 1,500 and 1,600 DEG C for 1.5 to 2.0 hours, and performing water quenching on the melted liquid by using cold water to obtain the milky white frit. The frit for the glaze is high in mobility, low in viscosity, high in glossiness and flatness, and wide in firing temperature range; and quality and yield of a product is improved, and the yield of the product is greatly improved.

The invention discloses a new antique brick and the manufacturing method; wherein, weight percentage of chemical component for main raw material is as follows: 16 to 23% Al2O3, less than 2% CaO and MgO, 65 to 7% SiO2, 4 to 7% K2O and Na2O, less than 1% Fe2O3, less than 0.5 to 2.5% TiO2, and 3 to 5% IL; the manufacturing method comprises the following steps: entry of raw material to the factory -> checking -> preparation -> ball milling-> testing -> pulp discharging -> powder making -> mixing for dry mixing machine -> sieving and warehousing -> ready for use; weight percentage of fineness for ball milling slurry is 250 meshes sieve residue: 0.9 to 1.0%; 7 to 11% of calcining shrinkage; 50 to 60min calcining cycle, 1200 to 1210 DEG C of temperature: 1.70 to 1.70g/cm<3> of ball milling slurry weight for mixture making; 16 to 23S of flow velocity for ball milling slurry for mixture making; 5.8 to 6.2% of powder lot moisture. The invention has the advantages of rational process and good qualitative sense of products.