1106results about How to "Lower firing temperature" patented technology

A disclosed method provides techniques for forming low-cost, mechanically strong, highly electronically conductive porous structures for solid-state electrochemical devices. In particular, a method of forming a ceramic film on a substrate using electrophoretic deposition (EPD) is described. The method employs a colloidal dispersion of particles during the EPD process where a distribution of particle sizes is selected to eliminate drying cracks in the ceramic film prior to firing of the ceramic film-coated substrate. The method may be used to provide a high-density green film which can be sintered on to a non-shrinking substrate. For instance, a thin film of YSZ with a high green density may be sintered on to a non-shrinking LSM substrate. In particular embodiments, the distribution of particle sizes used in the EPD process may be selected to reduce a firing temperature and a firing time during sintering of the film coated substrate.

A fuel which is used for rotary kiln cement clinker firing is composed of raw materials with the following weight percentage: coal 3-80, straw substances 0-90, forest products wastes 0-95 and food industry by-product residues 0-70. The straw substances refer to rice straws, wheat straws, cotton stalks, sesame stalks, soybean straws, corn stalks, sorghum stalks, rice husks, peanut shells, soybean shells and corn sticks, the forest products wastes refer to defective bamboo, wood, tree branches, leaves, shrubs, faggot straws and sawdust and wood wool corner scrap materials in the bamboo and wood-processing industry, the food industry by-product residues refer to bran, wheat skin, squeezing meal cake, bean dregs and wine lees, and the coal refers to bituminite, anthracite and coke coal powder. The flue raw materials which are used for the rotary kiln cement clinker firing have wide selecting range, simple preparation, convenient use and rapid burning speed and are beneficial for protecting atmosphere circumstances.

The invention relates to ceramic glaze, in particular to raw material matting glaze used for producing high-quality matting bone china products. The raw material matting glaze comprises the following chemical components in percent by weight: 48-60 percent of SiO2, 12.0-22.0 percent of Al2O3, 5.0-12.0 percent of ZnO, 5-12 percent of CaO, 0.5-2.0 percent of MgO, 0.0-3 percent of BaO, 0.0-3.0 percent of ZrO2, 0.0-2.0 percent of TiO2 and 5.0-15.0 percent of K2O and Na2O. The feldspar of the mineral raw material is mainly introduced. The invention has simple, scientific and reasonable constituent and is the raw material glaze; and the glaze does not need to be made into frits, therefore, energy sources are largely saved; the blank glaze has good adaptability, low firing temperature and wide firing range; the fired finished-product ceramic glaze surface is fine, moist, smooth and soft and does not have strong reflect light; and the glaze surface has strong corrosion resistance, high mechanical strength and good thermal shock stability and is easy to clean, therefore, the glaze is especially suitable for tableware dish-washing machines. The invention thoroughly solves the problems of the gloss and the texture of high-grade bone china.

The invention relates to a ceramic material for floor tiles and a method for preparing a ceramic material for floor tiles by use of industrial solid wastes such as phosphogypsum and red mud. The major raw materials of the ceramic material for floor tiles are as follows (by weight): 14 to 28 percent of phosphogypsum, 14 to 28 percent of red mud, 9 to 23 percent of feldspar, 20 to 35 percent of kaolin, and 11 to 28 percent of quartz. The preparation method of the ceramic material for floor tiles comprises the following steps of: preparing ceramic slurry, performing spray-drying, preparing blanks and burning final products. The method provided by the invention can effectively utilize the solid wastes to reduce environmental pollution due to industrial solid wastes, and is significant in clayresource conservation and production cost reduction in the conventional wall brick and floor tile industries in China. Besides, the ceramic products made from the ceramic material have the advantagesof high strength and low sintering temperature.

The invention provides a glaze for fast-fired crystal glaze ceramic tile and a preparation method and applications of ceramic tile. The glaze comprises basic crystal glaze and a color developing agent, wherein the basic crystal glaze comprises the following raw materials: zinc oxide, titanium dioxide, quartz, cryolite, zinc phosphate, kaolin, and lead frit. A proper amount of zinc phosphate is introduced into the glaze to avoid the raw material frit treatment, which is carried out to ensure the residual amount of nucleating agent, the requirements on the glaze granularity are reduced, the manufacture technologies of crystal glaze and ceramic tiles are simplified, and the technical difficulties that the crystal glaze sintering technology is complicated, the crystal patterns are difficult to control, and the production cost is high are solved. Moreover, the addition amount of quartz and lead frit is precisely controlled to obtain crystal glaze art ceramic tiles which have the advantages of good crystallization effect, strong three-dimensional effect, and good artistic effect. The provided preparation method has the advantages of simpleness, lower sintering temperature, shorter period, and suitability for massive industrial production.

The invention relates to ceramics and a production technology thereof, in particular to a household strengthen porcelain containing bone substances and the production technology thereof. The strengthen porcelain body comprises petalite, powdered alumina, bone powder, quartz, Longyan braying, Guizhou soil, Zimo saved soil and humic acid sodium; the glaze comprises spodumene, fritted glaze 317, bone powder, kaolin, zirconia, potassium feldspar and aedelforsite; the production technology of the strengthen porcelain comprises the steps of batching, water adding and ball milling, sifting out, iron removing, filter pressing, primary smelting, ageing, refining, molding, drying, glazing and kiln firing. The product of the invention has the advantages of high mechanical strength, good thermal stability, fine and glossy glaze, high whiteness, good transmittance and the like.

The invention relates to a fluorescent powder used for a white light LED and a preparation method thereof. The chemical formula of the fluorescent powder is (A3-x) (Al5-2mBmCm) FnO12-n: xCe, wherein A is one or more of Y, Gd, La and Tb; B is one or more of Ti, Zr and V; C is one or two of Mn, Zn, Mg and Li; x is more than or equal to 0.03 and less than or equal to 0.1; m is more than or equal to 0.01 and less than or equal to 2; and n is more than or equal to 0 and less than or equal to 3x. The preparation method comprises the steps of coating a layer of high-temperature ceramic glaze material at the joint between a crucible cover and a crucible by using a high-temperature solid phase method and a self-pressurization sealing burning technique, putting the crucible into an atmosphere box type furnace to burn for 2 to 5 hours at 1450 to 1550 DEG C in the nitrogen atmosphere, smashing and screening after cooling so as to acquire the finished product of the fluorescent powder. The fluorescent powder of the invention has high radiance. The method of the invention can efficiently lower the burning temperature of the fluorescent powder and increase the relative brightness.

A cementing material is a cement whose main components are calcium phosphoaluminate, calcium aluminate and calcium phosphate. Its clinker contains such chemical components (wt%) as CaO (30-60), Al2O3 (17-50), SiO2 (1-15), P2O5 (10-30), Fe2O3 (1-8) and MgO (1-7). Its advantages are high and early strength, high refractory nature, and high compatibility with existing cement.

The invention discloses a glaze material for Jun red glaze and a process for preparing Jun porcelain from the glaze material. The glaze material consists of the raw materials of melilite, quartzite, calcite, white feldspar, copper ore, ZnO, SnO, GuO, talc, BaO, zirconium silicate and spodumene. The preparation process comprises the following steps: firstly, smashing roughcast raw materials and conducting moulding to fire a plain roughcast, then immersing the plain roughcast into slurry of the glaze material of the Jun red glaze for glazing, and when the slurry adhered on the surface of the plain roughcast is dried, putting the plain roughcast in a kiln for firing, so as to obtain the Jun red glaze Jun porcelain. According to the glaze material for the Jun red glaze and the process for preparing the Jun porcelain by utilizing the glaze material, spodumene and zirconium silicate are added in the glaze material for the Jun red glaze, so that the fired Jun red glaze Jun porcelain is bright in color, mild and smooth in glaze surface, and uniform in cracking, and breaks through the condition that the general Jun red glaze Jun porcelain is dim in color and nonuniform in cracking; the Jun porcelain is taken as the specialty of China, and represents the advanced level of the manufacture process of China, and the social value of the Jun porcelain is improved.

The invention provides a ceramic formula, comprising, by weight, 55 to 65 parts of clay, 20 to 30 parts of a flux and 15 to 23 parts of a fluxing agent, wherein the clay is a mixture of purple sandshale and china clay mixed according to a weight ratio of 0.67 to 2.0, the flux is shale, and the fluxing agent is one or more selected from the group consisting of limestone, calcite, diopside, wollastonite, dolomite, talcum and industrial waste residue. A preparation method for a ceramic product comprises the following steps: weighing the clay, the flux and the fluxing agent according to the formula, carrying out crushing and screening with a 250-mesh sieve, wherein the weight of screen residue is 1 to 1.5%, adding water, carrying out blending to obtain slurry and then carrying out drying and granulation so as to obtain powder; grading particles and then carrying out molding so as to prepare a green body; carrying out drying so as to prepare a dry body; and carrying out firing so as to prepare a seasonal ceramic body. According to the ceramic formula and the preparation method for the ceramic product in the invention, raw materials are cheap, process is simple, firing temperature is reduced, production cost is decreased, investment for production equipment is lowered down, production efficiency is improved, and energy consumption is reduced.

The invention belongs to the technical field of refractory materials, in particular to an aluminum chrome refractory material, which takes white fused corundum as a body and is formed by adding scraps (the scraps are collected and crushed into the synthetic size) generated in the cold processing process of a dense chromic oxide product, Alpha-Al2O3 powder or chrome oxide green or white fused corundum powder and sintering at a high temperature in combination with an inorganic binding agent or an organic binding agent. A product obtained in the invention can be widely applied to a coal water slurry gasification furnace back lining, a hard carbon black reaction furnace inner lining, a residual oil gasification furnace inner lining in the petrochemical industry, a glass wool molten pool inner lining and the like, fully and effectively makes use of the scraps generated in the cold processing process of the dense chromic oxide product and has the characteristics of low impurity content, high refractoriness, excellent physical performance, good thermal shock resistance and strong erosion resistance.

The invention relates to the technical field of industrial production of sulfuric acid and cement, the field of industrial solid waste comprehensive utilization, and the field of environment protection and treatment, and particularly relates to a pre-heating decomposition method of producing sulfuric acid from phosphogypsum with co-production of cement. The method includes the steps of powder grinding of raw materials, multi-stage cyclic pre-heating, high-effective decomposition and kiln gas separation and purification. The method is used for preparing a cement raw material from the phosphogypsum subjected to pre-heating decomposition with clay, sand rock, coke and such auxiliary materials in the process of producing the sulfuric acid from the phosphogypsum with co-production of the cement. The method solves the problems that a pre-heating decomposition technology in the prior art is low in decomposition ratio of phosphogypsum, is low in productivity of sulfuric acid and clinker, is liable to cause crusting and blocking in a kiln and is high in production energy consumption, can reduce the decomposition efficiency of the phosphogypsum and accelerate escape of SO2, and further increase the productivity of the sulfuric acid and cement clinker. The pre-heating decomposition method of producing the sulfuric acid from the phosphogypsum with co-production of the cement can significantly reduce sintering temperature and energy consumption of the clinker, can reduce production cost of sulfuric and cement clinker, and can further increase comprehensive utilization rate of the phosphogypsum.

Aluminum titanate precursor batch compositions comprising a recycled aluminum titanate component, at least a portion of the recycled aluminum titanate component being comprised of a recycled pre-reacted aluminum titanate composition or alternatively of an un-reacted green aluminum titanate precursor composition, and methods for producing aluminum titanate ceramic articles utilizing the inventive batch compositions.

The invention discloses a method for preparing a porous ceramic filter membrane by low-temperature sintering. The method comprises the following steps: mixing and stirring ceramic aggregate particles, a sintering aid, deionized water, a dispersant and a defoamer, then carrying out vacuum pressure maintaining to remove a gas in the obtained filter membrane layer slurry; soaking a support body material in the filter membrane layer slurry, then obtaining a membrane layer on the support material by a pulling method, and then sintering at 700-1070 DEG C to obtain the porous ceramic filter membrane. According to the method, the porous ceramic membrane product which is high in strength, resistant to wear and corrosion, long in life and low in cost is obtained by optimally proportioning the sintering aid, the dispersant and the defoamer, preparing the ceramic membrane layer slurry system with high stability and proper viscosity, regulating the pulling method of the ceramic support body with a high porosity and a large hole diameter in the prefabricated membrane layer slurry system, thereby obtaining a uniform and asymmetrical porous ceramic membrane blank on the whole surface of a specified position of the support body material, and finally drying stage by stage and rapidly sintering at a low temperature of 1100 DEG C so as to obtain a porous ceramic filter membrane product with high intensity, abrasion resistance, corrosion resistance, long service life and low cost.

The invention relates a zirconia-toughened mullite ceramic material and manufacturing method thereof, which is manufactured through modern toughening and strengthening technologies with zirconium silicate and Alpha-aluminum oxide as a substrate, yttrium oxide, magnesium oxide, calcium oxide and titanium oxide as a mineralizer, and mullite as a seed crystal. The material is toughened and strengthened through the modifying treatment and the green compact has good uniformity and compactness with the aid of an isostatic pressing. The sintering process is completed within one time in the shuttle kiln under normal pressure and high temperature conditions, having a uniform temperature and low cost. Compared with an aluminum oxide ceramic material, the invention has advantages of high strength, high tenacity, high wear resistance and simple process; the dramatic reduction of sintering temperature can achieve the purpose of energy efficiency.

The present invention belongs to the field of cement material technology, and is especially one kind of Belite-calcium barium sulphoaluminate cement. The cement clinker is mainly one mineral phase system of C2S-CBAS-C3S-C3A-C4AF comprising calcium barium sulphoaluminate 5-45 wt%, dicalcium silicate 30-70 wt%, tricalcium silicate 10-45 wt%, tricalcium aluminate 2-20 wt%, and calcium aluminoferrite 2-20 wt%, where calcium barium sulphoaluminate has the molecular expression of (3-x)CaO .xBaO .3Al2O3 .CaSO4 with x=0.25-3. The present invention has the available of lower firing temperature, utilization of low quality limestone resource, high cement early strength, etc.

The invention relates to a ceramic product prepared from waste ceramic and a preparation method thereof. The blank formula of the ceramic product comprises the following components in part by weight: 32-36 parts of waste ceramic powder, 25-28 parts of kaolin, 15-22 parts of plastic clay and 17-25 parts of feldspar. The basic glaze formula of the ceramic product comprises the following components in part by weight: 30-35 parts of miniumite, 8-12 parts of limestone, 20-30 parts of feldspar, 8-14 parts of clay and 20-25 parts of quartz. A right amount of coloring metal compounds and/or coloring materials are added into the basic glaze. Compared with the prior art, a large amount of waste ceramic powder is used for replacing the traditional ceramic raw material for the basic glaze formula, and the technological difficulties of waste ceramic powder compounding, grain composition, sintering, decoration and the like are overcome. Not only is the waste changed into the valuable and a large amount of waste ceramic products are fully utilized, but also the sintering temperature of the ceramic product can be lowered, the energy consumption is reduced, the production cost of ceramic manufacturers is lowered, and the market competitiveness of the product is increased.

A composite ceramic substrate for receiving an ejection head chip for a micro-fluid ejection head and a method for making the composite ceramic substrate. The substrate includes a high temperature previously fired ceramic base having a substantially planarized first surface and at least one fluid supply slot therethrough. A low temperature co-fired ceramic (LTCC) tape layer bundle having at least two LTCC tape layers is attached to the ceramic base at an interface between the LTCC tape layer bundle and the first surface of the ceramic base. The LTTC tape layer bundle has at least one chip pocket therein and at least one of the LTCC tape layers includes a plurality of conductors.

The invention discloses a microcrystalline glass ceramic binding agent, a preparing method thereof, an SG grinding wheel and a preparing method thereof. The binding agent is prepared from, by weight percentage, 40% to 65% of SiO2, 6% to 20% of Al2O3, 5% to 18% of Na2O, 0.5% to 5% of CaO, 3% to 10% of K2O, 8% to 35% of B2O3, 0.5% to 2% of MgO and 2% to 6% of TiO2. The microcrystalline glass ceramic binding agent is formed by reasonably selecting the raw materials, the scientific ratio is adopted, the binding agent has the beneficial effects of being low in thermal expansion coefficient and crystallization temperature and high in strength accordingly, the microcrystalline glass ceramic binding agent is suitable for being used as a binding agent of the SG grinding wheel, the firing temperature of the SG grinding wheel is greatly reduced, and the firing time of the SG grinding wheel is greatly shortened; and meanwhile the work efficiency and the machining accuracy of the SG grinding wheel are improved, grinding heat is reduced, and the service life of the grinding wheel is prolonged.