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Light high-aluminum heat preservation refractory brick and production method thereof

A production method and technology of refractory bricks are applied in the field of thermal insulation and refractory materials, which can solve the problems of inability to grasp the shrinkage rate of semi-finished products, environmental damage to operators, dust and noise pollution, etc., so as to save production time, improve yield, and avoid dust and noise. Effect

Inactive Publication Date: 2016-11-09
新密市瑞达耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Bricks with high porosity, low bulk density, and high aluminum content in refractory insulation materials are called lightweight high-alumina thermal insulation refractory bricks, but the existing lightweight high-alumina thermal insulation refractory bricks have the following disadvantages: 1. The production process must go through The step of drying in the sun requires a lot of labor and space, and cannot be automated; 2. Because the shrinkage rate of the semi-finished product in the process of forming the finished product cannot be grasped, it must be cut after firing and molding, resulting in dust and noise pollution; 3. Exhaust gas will be generated during the firing process, which will cause damage to operators and the environment

Method used

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  • Light high-aluminum heat preservation refractory brick and production method thereof
  • Light high-aluminum heat preservation refractory brick and production method thereof

Examples

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Effect test

Embodiment 1

[0011] A light-weight high-alumina thermal insulation refractory brick, which is composed of the following raw materials in parts by weight: 30-60 parts of high-alumina bauxite, 5-10 parts of clay, 20-50 parts of raw bauxite, 10-30 parts of burnt matter, and 8 parts of water -12 servings.

[0012] The high alumina bauxite is 180 mesh high alumina fine powder, and the clay is 180 mesh clay fine powder.

[0013] The burnt matter is carbonate.

[0014] A production method of the light-weight high-alumina thermal insulation refractory bricks, comprising the following steps: (1) mixing high-alumina bauxite, clay, raw bauxite and burnt matter in proportion; (2) mixing them in proportion to Add water to the raw material to make mud; (3) The press applies a pressure of 300-500KN to the mud through the mold to form it; (4) After passing through the drying kiln at 80-200°C, it enters the tunnel kiln and roasts for 45-50 Hours, the temperature of the tunnel kiln is 1300-1450°C; (5) Aft...

Embodiment 2

[0017] A light-weight high-alumina thermal insulation refractory brick, which is composed of the following raw materials in parts by weight: 40-50 parts of high-alumina bauxite, 6-9 parts of clay, 30-40 parts of raw bauxite, 15-25 parts of burnt matter, and 9 parts of water -11 copies.

[0018] The high alumina bauxite is 180 mesh high alumina fine powder, and the clay is 180 mesh clay fine powder.

[0019] The burnt matter is carbonate.

[0020] A production method of the light-weight high-alumina thermal insulation refractory bricks, comprising the following steps: (1) mixing high-alumina bauxite, clay, raw bauxite and burnt matter in proportion; (2) mixing them in proportion to Add water to the raw material to make mud; (3) The press applies a pressure of 350-450KN to the mud through the mold to form it; (4) After passing through the drying kiln at 80-200°C, it enters the tunnel kiln for 46-49 Hours, the temperature of the tunnel kiln is 1350-1400°C; (5) After sintering, ...

Embodiment 3

[0023] A light-weight high-alumina thermal insulation refractory brick is composed of the following raw materials in parts by weight: 45 parts of high-alumina bauxite, 7 parts of clay, 35 parts of raw bauxite, 20 parts of burnt matter, and 10 parts of water.

[0024] The high alumina bauxite is 180 mesh high alumina fine powder, and the clay is 180 mesh clay fine powder.

[0025] The burnt matter is carbonate.

[0026] A production method of the light-weight high-alumina thermal insulation refractory bricks, comprising the following steps: (1) mixing high-alumina bauxite, clay, raw bauxite and burnt matter in proportion; (2) mixing them in proportion to Add water to the raw material to make mud; (3) The press applies a pressure of 400KN to the mud through the mold to form it; (4) After passing through the drying kiln at 80-200°C, it is baked in the tunnel kiln for 48 hours, and the tunnel kiln The temperature is 1375°C; (5) After sintering, it is naturally cooled and packaged...

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Abstract

The invention discloses a light high-aluminum heat preservation refractory brick and a production method thereof, and relates to the field of heat preservation refractory materials. The light high-aluminum heat preservation refractory brick is prepared from 30-60 parts of high-aluminum bauxite, 5-10 parts of clay, 20-50 parts of raw bauxite, 10-30 parts of ignition lost matter and 8-12 parts of water. The production method comprises the production steps of raw material mixing, mud preparing by adding water, forming by pressing, calcining, natural cooling and packaging. According to the light high-aluminum heat preservation refractory brick, little water is needed, the drying step is omitted in the production process, therefore, the production time is saved, sites and operating personnel which are needed by production are reduced, and the yield is increased; the shrinking percentage can be controlled, therefore, cutting after forming is omitted, dust and noise are avoided, and meanwhile the finished product rate is increased; through the ignition lost matter adopted in the raw materials, no waste gas is generated in the firing process.

Description

technical field [0001] The invention relates to the field of thermal insulation refractory materials, in particular to a lightweight high-alumina thermal insulation refractory brick and a production method thereof. Background technique [0002] Bricks with high porosity, low bulk density, and high aluminum content in refractory insulation materials are called lightweight high-alumina thermal insulation refractory bricks, but the existing lightweight high-alumina thermal insulation refractory bricks have the following disadvantages: 1. The production process must go through The step of drying in the sun requires a lot of labor and space, and cannot be automated; 2. Because the shrinkage rate of the semi-finished product in the process of forming the finished product cannot be grasped, it must be cut after firing and molding, resulting in dust and noise pollution; 3. Exhaust gas will be generated during the firing process, which will cause damage to operators and the environme...

Claims

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Application Information

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IPC IPC(8): C04B38/06C04B35/66C04B35/101C04B35/622B28B3/00
CPCC04B38/06B28B3/00C04B35/101C04B35/622C04B2235/349C04B2235/442C04B2235/60
Inventor 周丙灿周士博
Owner 新密市瑞达耐火材料有限公司
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