117 results about "Diopside" patented technology

The invention discloses a method for producing a microcrystalline glass-ceramics composite board with novel microcrystalline phase, which is characterized in that the composite board takes diopside-containing pyroxene as microcrystalline phase and the production method thereof comprises the steps as follows: firstly, microcrystalline glass granules are prepared; according to the weight percentage, the microcrystalline glass consist of 50-65% of SiO2, 5-25% of Al2O3, 5-20% OF CaO, 2-10% of MgO, 1-8% of K2O+NaO, 0-1% of Li2O, 0-8% of BaO, 0-8% of B2O3 and the balance of nucleating agent, clarifier and corant with the content ranging from 0 to 20%; secondly, a ceramic palette board is prepared; according to the weight percentage, the ceramic palette board comprises 66-75% of SiO2, 13-23% of Al2O3, 0.3-3% of CaO+MgO, 3-8% of K2O+Na2O and the balance of 0-2% of auxiliary raw material; finally, the raw materials are distributed, sintered and post-processed, thus gaining the finished product of the microcrystalline glass-ceramics composite board. The method has the advantages of low production cost, high product quality, good appearance effect, and the like.

The invention relates to a low-temperature semi-ceramic, which comprises: 50-65% clay of Al2O32SiO22H2O, 0-10% fine ceramic waste, 3-20% lithium China stone, 3-25% diopside, 5-20% talc, and 0-15% feldspar. Wherein, breaking the hard material, removing impurity; preparing material according to said weight share; grinding material, ball stone and water as proportion of 1:1.8-2:0.8 for 18-20h; screening off iron from 250 items sieve with residue under 0.2wt%; pressure filtering, forming; colored drawing on blank; glazing; finally, using low-temperature one-time calcination technique at 1020-1030Deg with oxidation atmosphere for 5-6h. This invention has well property, and decreases greatly energy consumption.

The present inveniton relates to a process of forming ceramic tiles having the appearance of tiles produced from clays. The process includes melting a material to form a glass melt, treating the glass melt to produce a solid glass product, grinding the solid glass product to produce glass particles having a particle size of less than 200 microns, mixing the glass particles with a first additive to form a glass power mixture having a composition of 55 to 99 wt.% glass particles and 45-1 wt.% first additive, forming the glass powder mixture into tiles by dry pressing, where the tiles have a primary crystalline phase selected from the group consisting of nepheline, diopside, anorthite, wollastonite, melilite, merwinite, spinel, akermanite, gehlenite, crystalline phases based on iron substitutions in the crystalline phase, and mitures thereof. The process includes a devitrifying step where the solid glass product is devitrified prior tothe grinding step or the glass particles in the tile are devitrified after the forming step.

The invention relates to a modified titanium-bearing blast furnace slag catalyst with visible photocatalytic activity and a preparation method thereof, which belong to the field of material science. The compositions of crystal phase of the catalyst are 33 to 40 weight percent of perovskite, 50 to 59 weight percent of diopside and 7 to 10 weight percent of akermanite-submellite; and the specific surface area is between 9.7 and 20.5 square meters pre gram, and the maximum absorption capacity is between 3.9 and 8.3 milligrams per gram. The preparation method comprises the following steps: firstly, titanium-bearing blast furnace slag is crushed, and titanium-bearing blast furnace slag powder is obtained; secondly, ammonium sulfate is mixed with the titanium-bearing blast furnace slag powder; thirdly, mixture of the titanium-bearing blast furnace slag powder and the ammonium sulfate is grinded; and fourthly, the mixture is roasted for 1 to 4 hours at a temperature of between 300 and 700 DEG C, and is cooled to the room temperature. The STBBFS catalyst prepared by the method has strong photoabsorption and photoresponse when excited by visible light, so that the photocatalyst which is prepared by adoption of the titanium-bearing blast furnace slag as a raw material can utilize visible light sources such as sunlight to effectively photodegrade organic pollutant and inorganic pollutant in the water, and has high energy conversion efficiency.

The invention discloses a functional ceramic tea set, and relates to the technical field of ceramic manufacturing, in particular to a functional ceramic tea set capable of radiating negative oxygen ions and far infrared rays for a long time, converting water molecular clusters and adsorbing harmful residues in tea. The functional ceramic tea set is characterized by being mainly composed of 28% of tourmaline, 8% to 10% of quartz, 6% to 8% of diopside, 12% to 16% of medical stone, 12% to 14% of albite, 4% to 7% of hsiuyen jade, 8% to 11% of tremolite, 10% to 13% of rectorite, 5% to 7% of kaolin, 8% of bentonite and the like. The appearance of the functional ceramic tea set is brownish red. The functional ceramic tea set has the functions of radiating negative oxygen ions and far infrared rays for a long time, converting water molecular clusters, having antibacterial and antiseptic effects, adsorbing a trace amount of pesticide residues and heavy metal such as lead, chromium and nickel in tea, resisting and killing mould and carcinogenic bacteria dissolved out of old tea due to inappropriate storage, and the like.

The present invention provides a glass ceramics dielectric material, comprising: a crystallizable glass powder in an amount of from 40% to 100% by mass; and a ceramics powder in an amount of from 0% to 60% by mass, wherein the crystallizable glass powder comprises: SiO2 in an amount of from 35% to 65% by mass; CaO in an amount of from 10% to 30% by mass; MgO in an amount of from 10% to 20% by mass; and ZnO in an amount of from 0.5% to 35% by mass, and wherein the material is capable of forming: diopside, CaMgSi2O6, as crystals; and at least one of hardestnite, Ca2ZnSiO7, and willemite, Zn2SiO4, as crystals; and a sintered glass ceramics, comprising: diopside, CaMgSi2O6, as crystals; and at least one of hardestnite, Ca2ZnSiO7, and willemite, Zn2SiO4, as crystals.

The invention discloses a composite saggar and a preparation method thereof. The composite saggar is prepared from raw materials in parts by weight as follows: 10-13 parts of magnesium mud, 10-12 parts of black talc, 33-35 parts of refractory mortar, 10-12 parts of sand, 4-6 parts of ballstone, 4-6 parts of aluminum powder, 5-7 parts of bauxite, 17-19 parts of refined mud, 90-160 parts of mullite, 22-35 parts of cordierite powder, 8-12 parts of attapulgite, 8-12 parts of calcined kaolin, 8-12 parts of diopside, 1-8 parts of fused magnesite, 1-3 parts of red mud, 1-3 parts of nano aluminum hydroxide sol, 1-3 parts of silica powder and 1-3 parts of reinforced fiber. The thermal stability, compressive capacity, corrosion resistance, low cracking probability and other properties of the saggar are improved by optimizing the raw material composition of the saggar, so that the saggar has the advantages of long service life and light mass. The adopted raw materials are cheap, and the preparation technology is simple, green and environment-friendly and can be industrially implemented.

The present invention provides a dielectric ceramic composition comprising: 30 to 90% by weight of a crystallized glass powder capable of depositing a diopside crystal, 1 to 40% by weight of a calcium titanate powder, a strontium titanate powder or a mixed powder thereof, and 0 to 60% by weight of at least one kind of a powder selected from the group consisting of Al₂O₃, TiO₂, ZrO₂, MgTiO₃, BaTi₄O₉, La₂Ti₂O₇, Nd₂Ti₂O₇, Ca₂Nb₂O₇, SrZrO₃ and CaZrO₃, and a dielectric ceramics obtained by firing the same.

The invention discloses molding sand with used sand recycled. The molding sand is composed of, by weight, 120-130 parts of the used sand, 100-110 parts of quartz sand, 15-20 parts of diopside, 25-30 parts of pyrophyllite, 35-45 parts of plant straw, 30-40 parts of carboxymethyl starch, 20-25 parts of microcrystalline cellulose, 15-20 parts of hydrogenated rosin and 10-15 parts of furfuryl alcohol resin. According to the molding sand, the used sand and waste are reasonably utilized, the direct cost is greatly lowered, and the environment is protected. Besides, the compositions are reasonably matched, and performance is good. The phenomenon of insufficient performance when the used sand is recycled is effectively avoided. The defects of peeling, sand inclusion, sand burning and the like are reduced. The rate of finished castings is increased, and the degree of finish of the castings is improved. The sand removing man-hour is shortened, cost is lowered indirectly, and high economic value is achieved.

The invention discloses a once-moulded thin-tire ceramic and a preparation technology thereof. The once-moulded thin-tire ceramic comprises a blank and glaze, wherein the blank comprises the followingraw materials in parts by weight: 16-22 parts of albite, 12-18 parts of montmorillonite, 46-52 parts of a quartz powder, 8-12 parts of rutile, 3-5 parts of a molybdenum ore powder, 1-3 parts of a silica brick powder, 5-8 parts of diopside, 3-6 parts of magnesium oxide, 1-3 parts of light calcium carbonate and 2-5 parts of a sintering aid; the glaze comprises the following raw materials in parts by weight: 10-15 parts of albite, 16-22 parts of red halloysite, 35-46 parts of quartz, 5-8 parts of titanium dioxide, 3-6 parts of a glass powder, 3-5 parts of red jade soil, 1-3 parts of bentonite, 2-5 parts of calcium nitride, 1-3 parts of dysprosium oxide and 1-2 parts of magnesium carbonate.

The invention relates to a method for preparing diopside ceramic glass from chromic slag and coal gangue. The method comprises the following steps: mixing and grinding the chromic slag and the coal gangue according to the ratio to obtain a mineral powder mixture; roasting the obtained mineral powder mixture, and enabling Fe2O3 in the mixture to be reduced into Fe3O4 to obtain a roasted mineral powder mixture containing magnetic Fe3O4; carrying out magnetic separation on the obtained roasted mineral powder mixture in a magnetic field so as to remove the Fe3O4 in the mixture, thus obtaining mineral powder mixture subjected to iron removal; putting the obtained mineral powder mixture subjected to the iron removal into a silicon molybdenum rod high-temperature furnace, and heating, melting and homogenizing in a non-oxidizing atmosphere to obtain a molten state mixture; pouring the obtained molten state mixture into a preheated die for forming to obtain base glass; sequentially carrying out annealing, nucleating and crystallization treatment on the obtained base glass to obtain the diopside ceramic glass. According to the method disclosed by the invention, synthetic raw materials are zero cost; a synthesized product, namely the diopside ceramic glass, has higher added value.

The invention discloses glass-ceramic tiles. The tiles are prepared from the following components in parts by weight: 10-25 parts of crystalline frit, 10-20 parts of quartz, 5-10 parts of wollastonite, 10-30 parts of diopside, 5-10 parts of anorthite, 5-10 parts of fluorite, 0-1.5 parts of coloring metal oxide powder, 0-5 parts of feldspar and 0-5 parts of clay. The preparation method comprises the following steps: firstly, preparing a powder blank, then performing sheeting forming, performing primary firing, then performing primary polishing, performing secondary firing and finally performingaftertreatment to obtain the finished glass-ceramic tiles. Microcrystalline phases of various oxides are produced from ceramic raw materials under the high temperature condition, oxides of titanium,zirconium or lead are prevented from being used as crystal nuclei, radiation and lead hazards are prevented, and the glass-ceramic tiles prepared with the multiple-sintering method have the characteristics of high surface compactness, high transparency, rich texture, better hardness and wear resistance and the like; meanwhile, fluorite is used as a fluxing agent and a dyeing assistant agent, so that ceramic is not easy to fade.

The invention belongs to the field of fireproof fibers and particularly relates to a preparation method of environment-friendly alkaline-free fireproof fibers. The fibers are prepared by preparing raw materials, melting, centrifugally throwing threads or blowing to form fibers by using natural diopside, quartz sands, calcite, coal gangue and phosphate ores as the raw materials. The diameters of the obtained fibers are 1-10 mm and the lengths are 50-200 mm. The fibers have the advantages of high degree of fire resistance, non-combustion property, low shot content, good biodegradability and the like, and are aluminium silicate fiber substitute materials which are widely applied to various thermal equipment and pipelines.

The invention belongs to the field of biological ceramic materials, and relates to a medical porous alumina based ceramic composite material. Firstly, 1-8% of calcium fluoride, 90-98% of alumina and 1-5% of diopside are mixed according to the mass percentage, and then the calcium fluoride, the alumina and the diopside are milled by balls to prepare mixed powder; and then the mixed powder material is placed into a graphite mould to be molded and pressed, hot-pressed and sintered in the argon or nitrogen atmosphere, wherein the sintering temperature is 1400 DEG C, the pressuring temperature is 1320 DEG C, the sintering pressure is 30 MPa and the heat preservation and pressure maintaining are carried out for 30 minutes at the sintering temperature. The composite material not only has good mechanical property and bioactivity, but also is distributed with micropores on the surface and is more beneficial to the growth of bone tissues. Simultaneously, the composite material has low manufacture cost and better application prospect in terms of the restoration, replacement and the like of bones of the human body.

The invention relates to an antique ceramic. The blank is prepared from the following raw materials: 35-45 wt% of kaolin, 4-6 wt% of peat soil, 6-14 wt% of alkaline earth, 5-7 wt% of quartz, 25-33 wt% of bentonite, 1-3 wt% of diopside, 12-16 wt% of picrolite and 4-6 wt% of fired talcum. The preparation method of the antique ceramic is characterized by comprising the following steps: (1) weighing materials according to the formula, milling the material, balls and water in a ball mill in a mass ratio of 1:2:0.8, passing through a 200-mesh screen, and aging for 2 days; (2) injecting the blank slurry into a mold, demolding after 20 minutes, taking out the blank, drying, repairing and applying water; and (3) firing in a kiln at 900-1000 DEG C in an oxidizing atmosphere for 2-3 hours, converting into a reducing atmosphere, heating to 1150-1230 DEG C, keeping the temperature for 1-2 hours, and finally, naturally cooling to obtain the antique ceramic. The method can directly perform firing without glazing, and thus, is simple in preparation technique. The prepared antique ceramic has the advantages of low cost, natural color, abrasive surface and antique beauty.

The invention provides a crystallized glass product with pattern, which comprises: a crystallized glass layer A formed by sintering multiple small crystallized glass bodies and crystallizing them at the same time; and a crystallized glass layer B formed by arranging a crystallized glass plate B on at least one surface of the crystallized glass layer A while it is in sintering state, and crystallizing the crystallized glass plate B from surface to inner center. The primary crystallization of the crystallized glass layer A is at least one of beta- wollastonite, beta-CaO-SiO2 and diopside, CaO-MgO-2SiO2; while the primary crystallization of the crystallized glass layer B is is at least one of beta- wollastonite, beta-CaO-SiO2 and diopside, CaO-MgO-2SiO2. Besides, the invention further provides a manufacturing method of the crystallized glass product with pattern.