11 results about "Kyanite" patented technology

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.

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 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.

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.