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High-performance light vitreous foam ceramic tile and preparation process thereof

A foamed ceramic, high-performance technology, applied in ceramic products, other household appliances, household appliances, etc., can solve the difficulty of mass production of lightweight foamed ceramic tiles and ceramic tiles, and does not mention the decorative properties of the brick body. And other issues

Inactive Publication Date: 2013-03-13
杭州民生陶瓷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent CN1147489 discloses a light-weight foamed ceramic and its manufacturing method. The ceramic contains four compounds that can expand when heated. The volcanic rock mainly composed of acidic silica contains alkaline earth metal oxides and carbonates. Compounds composed of alkali metal-based inorganic binders, silicate-based foam accelerators, and an appropriate amount of water are added, and after raw material expansion, mixing, grinding, drying, crushing, molding, sintering, etc. It is easy to produce foamed ceramics by this method, but it is difficult to directly manufacture regular ceramic tiles, because the degree of foaming cannot be controlled during the firing process, that is to say, light weight bricks with uniform dimensions cannot be produced in batches. Foamed ceramic tiles, in addition, this document only provides the application of the foamed ceramics in light weight, does not mention the decoration of walls, etc., and does not mention that the brick itself is decorative

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: Weigh the billet by mass parts, 30 parts of porcelain stone, 30 parts of low-temperature sand, 5 parts of dolomite, 5 parts of calcite, 30 parts of ceramic waste, 0.4 part of silicon carbide, 10 parts of lithium porcelain stone, nano kaolin 0.8 parts, 0.05 parts of sodium tripolyphosphate, after 20 hours of mixing and grinding, the fineness is 250 mesh sieve remaining 0.1%, then dehydrated and dried by pressure filtration, the moisture content after drying is 7%, crushed and granulated 8 to 15 mesh , the moisture content of the particles is 7%, and then fired in a roller kiln at a firing temperature of 1150°C for 7 hours.

[0032] Product bulk density: about 480Kg / m3; volume water absorption rate 1.8%; compressive strength 6.0Mpa, thermal conductivity 0.15W / M.K. The foaming effect of the product is average, and the cells are very uneven.

Embodiment 2

[0033] Embodiment 2: Weigh blanks by mass parts, porcelain stone 15, low-temperature sand 10, dolomite 10, calcite 5, ceramic waste material 50, lithium porcelain stone 10, nano kaolin 0.8, polyvinyl alcohol 0.05, silicon carbide 0.4, After 20 hours of mixing and grinding, the fineness is 0.1% of the 250 mesh sieve, and then dehydrated and dried by pressure filtration. After drying, the moisture content is 5%, crushed and granulated to 8~15 mesh, and the particle moisture content is 5%. It is fired in a roller kiln at a firing temperature of 1200°C for 9 hours.

[0034] Product bulk density: about 590Kg / m3; volume water absorption 0.5%; compressive strength ≥ 8.6MPa; thermal conductivity 0.203W / M.K. The foaming effect of the product is good, and the cells are uniform.

Embodiment 3

[0035] Embodiment 3: take blank by mass parts, china stone 20, low-temperature sand 15, dolomite 10, calcite 5, lithium china stone 5, waste material 45, nano kaolin 0.8 water glass 0.05, silicon carbide 0.4, through 20 hours Mixing and grinding, the fineness is 250 mesh sieve, the remaining 0.3%, and then dehydrated and dried by pressure filtration, and the moisture content after drying is 8%; crushed and granulated to 8~15 mesh, the moisture content of the particles is 8%, and then put into the roller table Kiln firing, firing temperature 1250 ℃ firing time 12 hours.

[0036] Product bulk density: about 650Kg / m3; volume water absorption 0.5%; compressive strength 12MPa; thermal conductivity 0.25W / M.K. The foaming effect of the product is average, and the cell uniformity is not high.

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Abstract

The invention relates to a vitreous foam ceramic tile, in particular to a high-performance light vitreous foam ceramic tile and a preparation process thereof, wherein the ceramic tile is used for anti-corrosive lining material of chimney and heat-preservation and heat-insulating material for various buildings. The ceramic tile is prepared by the following blanks by mass portions: 15-30 portions of ceramic stones, 10-30 portions of low-temperature sands, 5-10 portions of dolomites, 5-10 portions of lithium ceramic stones, 5-10 portions of calcites, 30-50 portions of ceramic wastes, 0.1-2 portions of carborundum, 0-1 portion of nano-kaolin and 0-0.5 portion of dispersant. The invention overcomes the shortcomings existed in the prior art and provides the light vitreous foam ceramic tile which is moisture-proof, has low water absorption and consists of countless independent and non-communicated small air bubbles. The other technical problem to be solved is as follows: the invention provides the light vitreous foam ceramic tile which has the advantages of small bulk density, high strength, small heat conduction coefficient, high temperature resistance, anti-corrosion, wide use temperature, energy-saving, consumption-reduction and pollution-reduction.

Description

technical field [0001] The invention relates to a vitrified foam ceramic brick, in particular to a high-performance lightweight vitrified foam ceramic brick used as a chimney anti-corrosion lining material and various buildings as thermal insulation materials. Background technique [0002] Foamed ceramics in the prior art, decorative building pottery bricks have a relatively large specific gravity (generally 2.2. Firm, constructed and operated by professionals, often used for exterior wall decoration. If building ceramic tiles are used for interior wall decoration, the single tone of the glaze and polished glass luster will make the interior decoration effect appear gorgeous, excessive, elegant and insufficiently varied. , and the building ceramic bricks with a large specific gravity increase the bearing of the wall, it is easy to fall off and unsafe, and the construction is extremely inconvenient. In recent years, some light-weight foamed ceramics have appeared on the mark...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/02C04B35/622
CPCC04B38/00
Inventor 金尧根陈芳万海清王建祥许金利
Owner 杭州民生陶瓷有限公司