17 results about "Kyanite" patented technology

The invention discloses an anti-erosion Al2O3-SiC-C slag runner castable containing pyrophyllite and a preparation method of the anti-erosion Al2O3-SiC-C slag runner castable, and belongs to the technical field of refractory materials. The Al2O3-SiC-C slag trough castable is mainly prepared from the following raw materials in percentage by mass: 30 to 45 percent of high-alumina clinker, 20 to 35 percent of pyrophyllite, 8 to 15 percent of silicon carbide, 5 to 10 percent of kyanite, 5 to 10 percent of graphite electrode powder, 3 to 6 percent of active Al2O3 micro powder, 2 to 4 percent of silicon micro powder, 1.5 to 2.5 percent of antioxidant, 3 to 5 percent of pure calcium aluminate cement and 1.5 to 2.5 percent of asphalt. In addition, explosion-proof fibers accounting for 0.03-0.15% of the total weight of all the raw materials and a water reducing agent accounting for 0.05-0.15% of the total weight of all the raw materials are added. The anti-erosion Al2O3-SiC-C slag runner castable is prepared by mixing the weighed raw materials uniformly and then obtaining the anti-erosion Al2O3-SiC-C slag runner castable. The Al2O3-SiC-C slag runner castable prepared by the method can completely meet the requirements of the use performance of the Al2O3-SiC-C slag runner castable, and the Al2O3-SiC-C slag runner castable can be well applied to a blast furnace casting house; meanwhile, the cost is reduced, and remarkable social benefits and economic benefits are achieved.

The invention discloses a jade-color luxury-effect ceramic rock plate and a preparation method thereof. The ceramic rock plate sequentially comprises a green body, a transparent cover glaze layer, a jade texture pattern layer, a composite dry particle layer, a first protective glaze layer, a transparent dry particle layer and a second protective glaze layer from bottom to top, the composite dry particle layer is prepared from the following raw material components in parts by weight: 65-69 parts of baddeleyite, 5-7 parts of lepidolite, 10-15 parts of opal, 3-5 parts of kyanite and 1-5 parts of udravite; the anti-reflection dry granules are prepared from the following raw material components in parts by weight: 20 to 25 parts of albite, 25 to 30 parts of quartz, 14 to 16 parts of calcite, 8 to 12 parts of wollastonite and 13.5 to 15.5 parts of zinc oxide. The ceramic rock plate can truly restore the randomness, the layering sense and the multicolor interweaving effect of jade seeping, the mild texture and the natural gloss of the surface of a product are improved, and the luxury effect of jade seeping is achieved.

The invention discloses a method for preparing ceramsite by utilizing hazardous waste chromium-containing sludge and secondary aluminum ash and a product thereof, and the method comprises the following steps: uniformly mixing fine-grain chromium-containing sludge, secondary aluminum ash and dolomite mineral powder, roasting, cooling, grinding and uniformly mixing with kyanite slime, adding water, stirring, granulating and drying to obtain the ceramsite. Raw material balls are obtained; sintering under an air atmosphere condition, and cooling to obtain the ceramsite. According to the method disclosed by the invention, through a method of combining roasting, grinding, hydration and sintering, on one hand, collaborative resource treatment of hazardous wastes including the chromium-containing sludge and the secondary aluminum ash and common solid wastes including kyanite slime and dolomite mineral powder is realized, and low-carbon transformation of the chromium-containing sludge and the secondary aluminum ash from hazardous waste landfill to building material recycling is realized; besides, the lowest leaching concentration of hexavalent chromium of the obtained ceramsite is 0.16 + / -0.01 mg / L, and the ceramsite has the advantages of no dangerous characteristic, high strength and double advantages of deep detoxification of pollutants and improvement of material performance.

The application discloses a kind of jade color seepage luxury stone effect ceramic rock plate and preparation method thereof, the ceramic rock plate includes body, transparent face glaze layer, jade texture pattern layer, composite dry particle layer, first protective glaze layer, transparent dry particle layer and second protective glaze layer in turn from bottom to top;The raw material components of preparation composite dry particle layer include seepage color dry particle and transmittance dry particle, and the raw material components of seepage color dry particle include by weight 65-69 parts of zircon, 5-7 parts of lithium mica, 10-15 parts of opal, 3-5 parts of kyanite and 1-5 parts of calcium-aluminium garnet;The raw material components of transmittance dry particle include by weight 20-25 parts of sodium feldspar, 25-30 parts of quartz, 14-16 parts of calcite, 8-12 parts of wollastonite and 13.5-15.5 parts of zinc oxide.The ceramic rock plate can truly restore the randomness, level and multicolor interweaving effect of jade color seepage, improve the warm and moist texture and natural luster of product surface, realize the luxury stone effect of jade color seepage.

The invention discloses a ceramic grouting repairing material for a coke oven flame path and a preparation method of the ceramic grouting repairing material for the coke oven flame path. Comprising the following components: 30%-50% of fused mullite, 20%-25% of high-purity quartz, 1%-7% of calcined talcum powder, 3%-10% of kaolin, 1%-10% of bentonite, 1%-8% of kyanite, 5%-10% of silica powder, 3%-10% of alpha-A2O3, 1%-10% of petalite, 1%-10% of yttrium oxide, 1%-10% of pseudo-boehmite, 2%-5% of a binding agent and 1%-4% of an additive, the high-purity quartz, the calcined talcum powder, the kaolin, the bentonite, the petalite, the pseudo-boehmite and the yttrium oxide generate a mullite glass phase at the temperature of about 1200 DEG C, the mullite glass phase is filled into gaps of electro-fused mullite particles to form a net structure, the yttrium oxide can play a role in promoting crystal grain development and stabilizing a crystal phase, and the kyanite is mainly used for adjusting the expansion coefficient of the material; the coke oven flame path ceramic grouting repairing material is observed by an endoscope to form a uniform enamel protection layer on the surface of a tubular brick, and the damaged part of the vertical flame path tubular brick is effectively repaired.

The invention relates to the field of hot patching materials and preparation processes, in particular to an aluminum melting furnace quick repair hot patching material and a preparation process thereof, and the hot patching material is prepared by mixing high bauxite aggregate, silicon carbide, high aluminum fine powder, an aluminum dihydrogen phosphate solution, kyanite powder and silica powder; wherein the hot patching material comprises the following components in percentage by weight; the high-alumina bauxite aggregate accounts for 43 to 57 parts, the silicon carbide accounts for 5 to 14 parts, the high-alumina fine powder accounts for 16 to 22 parts, the aluminum dihydrogen phosphate solution accounts for 6 to 10 parts, the kyanite powder accounts for 0.7 to 3.3 parts, and the silica powder accounts for 0.5 to 2.5 parts; according to the aluminum melting furnace quick repair hot patching material and the preparation process thereof, through the use of the overturning part, materials in the stirring barrel can be conveniently fed into the discharging plate through the discharging plate, so that the mixed materials can be conveniently discharged through the discharging plate; the silicon carbide and the kyanite powder are added into a stirring machine step by step for dry mixing, the aluminum dihydrogen phosphate solution obtained after dry mixing is evenly added into the stirring machine in three times, the production steps of the quick patching material are optimized through the steps, and the prepared hot patching material is better in performance.

This invention belongs to the field of refractory material preparation technology, specifically relating to a refractory brick and its preparation method. The refractory brick of this invention uses calcined bauxite and fused white corundum as the main raw materials, providing a high-strength refractory skeleton to ensure the basic compressive strength of the refractory brick. The addition of kyanite and andalusite, through a kyanite-andalusite composite, achieves gradient control of the expansion rate; kyanite rapidly responds to mid-temperature shrinkage, while andalusite sustains high-temperature expansion, synergistically achieving volume stability. Secondary alumina ash, hematite tailings, and serpentine tailings are also added to the raw materials to promote the formation of magnesium iron spinel and mullite phases; lanthanum oxide, yttrium aluminum garnet, titanium silicon carbide, and yttrium titanate are added to further improve the strength and crack resistance of the refractory brick; calcium hexaaluminate micron powder, p-Al2O3 micron powder, and deionized water are used as composite binders. Thus, the synergistic effect between the raw materials ensures that the prepared refractory brick has excellent strength and crack resistance.

The invention belongs to the field of advanced structure ceramic preparation, and particularly relates to an anti-deformation smoothing plate and a manufacturing method thereof. The preparation method of the anti-deformation smoothing plate comprises the following steps: (1) performing high-pressure forming on raw materials to obtain a formed blank; (2) drying the molded blank until the moisture content is less than 0.5% to obtain a dry blank; (3) sintering the dry green body at the temperature of 1300-1500 DEG C to obtain a sintered green body; and (4) the sintered blank is ground and subjected to finish machining treatment, it is ensured that the flatness of a product is smaller than 0.02 mm, and the smoothening plate is obtained. The preparation method comprises the following steps: taking white corundum, fused mullite, alumina fine powder and kaolin as raw materials, introducing kyanite micro powder and talc micro powder, mixing the raw materials, performing high-pressure molding, and performing high-temperature sintering to form a sintered product which takes corundum and fused mullite particles as aggregates and has a low-expansion modified mullite matrix. The product has the advantages of favorable thermal shock resistance, excellent deformation resistance and longer service life.

The present application belongs to the technical field of unshaped refractory material, and discloses a kind of crack self-repairing acid-resistant spray coating and its using method.The crack self-repairing acid-resistant spray coating of the present application includes the following mass percentage of raw materials: 35~50% of coke-vitreous stone aggregate, 20~30% of high alumina bauxite powder, 6~10% of active alumina micro powder, 1~4% of quartz powder, 2~5% of kyanite powder, 2~4% of crack self-repairing microcapsule, 0.08~0.2% of plasticizer, 0.1~0.4% of curing agent, 0.1~0.5% of surface modifier, and 9~13% of ammonium type silica sol.The crack self-repairing acid-resistant spray coating of the present application has the characteristics of easy construction, high strength, good high-temperature volume stability, self-repairing after crack, excellent acid corrosion resistance, etc., and is especially suitable for hot blast furnace dome position.

The invention belongs to the field of refractory materials, and provides a repairing material for a flame path wall of an annular roasting furnace, which is prepared from the following substances in parts by weight: 50-60 parts of refractory particles, 40-60 parts of mixed refractory fine powder, 15-24 parts of additional binding agent and 0.5-2 parts of additional fiber, the particle size of the fireproof particle material is 0-5 mm, and the mixed fireproof fine powder is sieved by a 160-180-mesh mesh sieve; the refractory granular material comprises one or more of flint clay, mullite and bauxite, and the mixed refractory fine powder comprises two or more of bauxite fine powder, andalusite, waste silicon carbide deck fine powder and kyanite. According to the sewing material for the flame path wall of the annular roasting furnace and the sewing method of the sewing material, provided by the invention, the problem of large cracks, holes or local brick falling of the flame path wall of the annular roasting furnace can be solved.

The invention relates to a high-aluminum long-service-life tundish protection plate and a preparation method, and belongs to the technical field of steelmaking and casting. The tundish protection plate is prepared from the following raw materials: dry base powder and an aluminum dihydrogen phosphate solution, wherein the dry base powder comprises the following components in percentage by mass: 20%-40% of bauxite, 15%-46% of corundum, 15%-30% of electric smelting magnesium aluminate spinel, 2%-5% of kyanite powder, 2%-8% of silicon carbide powder, 1%-3% of electric smelting magnesium powder, 2%-4% of zirconite powder, 1%-3% of silica powder and 1%-3% of a composite antioxidant. The protective plate material with excellent comprehensive performance can be formed through the combined action of the raw materials such as the bauxite, the corundum and the electric smelting magnesium aluminate spinel, the protective plate is tightly attached to the outer surface of the tundish dry material, the protective plate and the tundish dry material form a composite working layer, multiple challenges of the tundish working layer material under the high-temperature working condition are effectively solved, and the service life of the tundish working layer material is prolonged. The comprehensive performance of the material is remarkably improved, the service life is prolonged, and substantive technical progress is brought to the steelmaking industry.

The present invention discloses a special corundum mullite brick for lime kilns and a preparation method thereof. The raw materials thereof include aggregate, silicon carbide, corundum, bauxite, fused quartz, Guangxi white mud, aluminum dihydrogen phosphate, and rare earth elements; the aggregate is formed by crushing mullite blocks; and the raw materials of the mullite blocks include ultrafine alumina powder, zircon-containing silicon powder, andalusite, kyanite, and sillimanite. The beneficial effects of the present invention are as follows: the andalusite, kyanite, sillimanite, ultrafine alumina powder, and zircon-containing silicon powder are first made into mullite blocks, which are then crushed and added as aggregate to the raw materials for preparing lime kiln bricks, so that the andalusite, kyanite, and sillimanite can be fully meshed into the mullite. The prepared special corundum mullite brick for lime kilns has high refractoriness and thermal shock resistance, has high structural strength, and has low bulk density, effectively reducing the cracking phenomenon of the lime kiln body.

The present invention discloses a method for repairing a green body, comprising: ball-milling and sieving 20-35 parts by weight of kaolin, 10-30 parts of albite, 0.5-2 parts of talc, 15-25 parts of clay, 20-35 parts of quartz, 1-4 parts of wollastonite, and 10-15 parts of kyanite powder to obtain a prefabricated slurry; ball-milling and sieving 10-25 parts of refractory wool, and then adding a colorant to the prefabricated slurry to obtain the repair slurry; applying the repair slurry to the area to be repaired, glazing, and then firing the repaired green body to 1100°C-1315°C using a staged temperature-raising method. The repair method provided by the present invention can alleviate defects such as green body cracking and high-temperature deformation, reduce color difference, and expand the range of green body crack repair, thereby preventing the green body from cracking.

The invention discloses a method for repairing a green body. The method comprises the following steps: weighing 20-35 parts by weight of kaolin, 10-30 parts by weight of albite, 0.5-2 parts by weight of talc, 15-25 parts by weight of clay, 20-35 parts by weight of quartz, 1-4 parts by weight of wollastonite and 10-15 parts by weight of kyanite powder, and carrying out ball milling and sieving to obtain prefabricated slurry; ball-milling and sieving 10-25 parts of refractory cotton, and adding a pigment into the prefabricated slurry to obtain the repairing slurry; and coating a to-be-repaired area with the repairing slurry, glazing, and sintering to 1100-1315 DEG C by adopting a segmented heating sintering method to obtain a repaired green body. By adopting the repairing method provided by the invention, the defects of cracking and high-temperature deformation of the green body can be reduced, the chromatic aberration is reduced, and the range of repairing the cracks of the green body can be expanded, so that the green body does not crack.

This invention discloses a design and construction method for an open-type reinforced concrete column, relating to the field of concrete pouring construction. During construction, the column reinforcement and concrete are formed in a single operation, reducing construction measures and procedures such as rebar installation, repeated formwork installation and removal, and flared concrete pouring. This saves on the amount of reinforcement and formwork used, reduces work shifts, lowers construction costs, and accelerates construction progress. Simultaneously, it improves the construction quality of the reinforcement and concrete, especially the reinforcement and concrete of end columns. Kyanite and andalusite are added to the concrete raw materials. During combustion, kyanite and andalusite transform into mullite, and the accompanying expansion balances the firing shrinkage of the product, ultimately densifying the matrix. Therefore, the addition of kyanite and andalusite raises the softening point temperature of the product and improves creep resistance, thereby enhancing the physical properties of the reinforced concrete column and increasing its durability and service life during subsequent use.

The invention belongs to the technical field of refractory materials and relates to an aging low-thermal-conductivity refractory material as well as a preparation method and a use method thereof. The preparation method of the aged low-thermal-conductivity refractory material comprises the following steps: respectively crushing the special-grade alumina clinker and the low-thermal-conductivity mullite-silicon aggregate into four particle sizes of 5-8 mm, 3-5 mm, 1-3 mm and 0-1 mm for later use; the preparation method comprises the following steps: mixing special-grade alumina clinker fine powder with the particle size of 0-1mm, low-thermal-conductivity mullite-silicon aggregate fine powder with the particle size of 0-1mm, sintered alumina fine powder, calcium aluminate cement fine powder, alpha-Al2O3 fine powder and kyanite fine powder according to a ratio to obtain matrix fine powder; the preparation method comprises the following steps: mixing special-grade alumina clinker particles with the particle size of 5-8 mm, special-grade alumina clinker particles with the particle size of 3-5 mm, special-grade alumina clinker particles with the particle size of 1-3 mm, low-thermal-conductivity mullite-silicon aggregate particles with the particle size of 5-8 mm, low-thermal-conductivity mullite-silicon aggregate particles with the particle size of 3-5 mm and low-thermal-conductivity mullite-silicon aggregate particles with the particle size of 1-3 mm according to the proportion, and adding silica powder while stirring; and after mixing, adding the matrix fine powder, uniformly mixing, finally adding the explosion-proof fiber, and stirring to obtain the aging low-thermal-conductivity refractory material.

The present invention discloses a prestressed reinforcement coating slurry suitable for various architectural ceramics, as well as its preparation method and application, belonging to the technical field of ceramic reinforcement materials. The coating slurry is composed of a coating powder and a solvent, wherein the coating powder is composed of the following components by weight: 40-50% quartz; 10-12% alumina; 20-30% dolomite; 2-5% α-spodumene; 2-5% polyvinyl butyral; 0.5-0.8% dispersant; and 5-8% kyanite. The present invention prepares a coating slurry from quartz, alumina, dolomite, α-spodumene, and kyanite, capable of improving the damage tolerance of various architectural ceramic substrates.