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Flint-clay composite refractory brick as well as preparation method and application thereof

A technology of refractory bricks and gemstones, applied in the field of refractory materials, can solve the problems of long-term use of large creep rate, influence of anode carbon block production, low load softening point, etc., and achieves reasonable composition matching, difficult skeleton structure, and low creep. Effect

Inactive Publication Date: 2016-12-07
济源市金峰耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In my country's current market, although the production of refractory materials for carbon roasting furnaces is very common, no matter whether it is clay refractory materials, high-alumina refractory materials or general creep refractory materials, there are low softening points under load, Shortcomings such as poor thermal shock stability and high creep rate after long-term use will lead to premature deformation and damage of the flue wall, and the production of anode carbon blocks will be greatly affected

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  • Flint-clay composite refractory brick as well as preparation method and application thereof

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Embodiment 1

[0027] The present embodiment provides a burnt stone composite refractory brick, which includes aggregate, fine material and pulp water, wherein the quality of the pulp water is 4.5% of the total mass of the aggregate and the fine material; the bone The material and the fine material are composed of the following raw materials in mass percentage: bauxite clinker large particle 6%, burnt gemstone large particle 25%, andalusite small particle 17%, burnt gemstone small particle 10%, andalusite fine powder 18%, coke gemstone fine powder 10%, kaolin fine powder 14%.

[0028] Wherein, the particle size of the large particles of bauxite clinker is 1 mm to 3 mm, the particle size of the large particles of burnt gem is 1 mm to 3 mm, the particle size of the small andalusite particles is less than 1 mm, and the particle size of the burnt gem The particle size of the small particles is less than 1 mm, the particle size of the andalusite fine powder is less than 0.074 mm, the particle siz...

Embodiment 2

[0039] This embodiment provides a burnt stone composite refractory brick, the specific raw material composition is roughly the same as that of Embodiment 1, the difference is that in this embodiment, the mass of the pulp water is the total mass of the aggregate and the fine material 5%, the aggregate and the fine material include the following raw materials in mass percentages: bauxite clinker large particles 12%, burnt gemstone large particles 17%, andalusite small particles 17%, burnt gemstone small particles 10% %, andalusite fine powder 15%, coke gem fine powder 7% and kaolin fine powder 12%.

[0040]The preparation method of the burnt stone composite refractory brick described in this example is roughly the same as the preparation method in Example 1, the difference is that the mixed and milled mud is pressed into a brick, and then the brick is put into a tunnel type Drying in a drying tunnel for 36 hours, wherein the inlet temperature of the tunnel-type drying tunnel is ...

Embodiment 3

[0043] This embodiment provides a burnt stone composite refractory brick, the specific raw material composition is roughly the same as that of Embodiment 1, the difference is that in this embodiment, the mass of the pulp water is the total mass of the aggregate and the fine material 5%, the aggregate and the fine material include the following raw materials in mass percentages: bauxite clinker large particles 10%, burnt gemstone large particles 21%, andalusite small particles 18%, burnt gemstone small particles 9% %, andalusite fine powder 22%, coke gem fine powder 10% and kaolin fine powder 10%.

[0044] The preparation method of the burnt stone composite refractory brick described in this example is roughly the same as the preparation method in Example 1, the difference is that the mixed and milled mud is pressed into a brick, and then the brick is put into a tunnel type Drying in a drying tunnel for 36 hours, wherein the inlet temperature of the tunnel-type drying tunnel is...

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Abstract

The invention provides a flint-clay composite refractory brick, which is prepared from a main material and an additive, wherein the main material comprises the following raw materials in percentage by mass: 6 to 12 percent of bauxite clinker large particle, 7 to 28 percent of flint clay large particle, 15 to 27 percent of andalusite small particle, 5 to 10 percent of flint clay small particle, 15 to 27 percent of andalusite fine powder, 5 to 10 percent of flint clay fine powder and 5 to 14 percent of kaolin micro powder; the mass of the additive is 4.5 to 5.5 percent of that of the main material. The invention also provides a preparation method and application of the flint-clay composite refractory brick. The flint-clay composite refractory brick is reasonable in the matching of components, and further has favorable heat shock resistance, better heat stability and higher refractoriness under load, so as to improve the service life of a carbon roasting furnace of which the flue wall is built by applying the flint-clay composite refractory brick.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a burnt gemstone composite refractory brick and its preparation method and application. Background technique [0002] In the modern carbon industry, it is very common to use a roaster to produce anode carbon blocks. The main task of the carbon roaster is to roast anode carbon blocks for electrolytic aluminum. The flue wall of the roasting furnace in the prior art is made of clay bricks, the fuel is burned in the flue, and the heat is transferred to the anode carbon block in the adjacent material box through the high-load andalusite composite refractory brick material, and the anode carbon block Roast in an atmosphere without contact with flames. Therefore, in addition to long-term high temperature and high pressure in the anode roasting furnace, refractory materials must also withstand periodic temperature changes. Therefore, the requirements for refract...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66
Inventor 贺延奎王法河
Owner 济源市金峰耐火材料有限公司
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