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Low-creep high-rcasting refractory brick and preparation method and application thereof

A low-creep, refractory brick technology, used in the field of refractory materials, can solve the problems of anode carbon block production, low load softening point, poor thermal shock stability, etc., achieve reasonable composition, improve service life, and slag resistance. strong 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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  • Low-creep high-rcasting refractory brick and preparation method and application thereof

Examples

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Embodiment 1

[0026] This embodiment provides a low-creep high-load soft 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 aggregate and the fine material include raw materials in the following mass percentages: 31% of large particles of burnt gemstones, 28% of small particles of burnt gemstones, 20% of andalusite fine powder, 11% of combined clay fine powder and bauxite clinker Micronized 10%.

[0027] Wherein, the particle size of the large burnt gemstone particles is 1 mm to 3 mm, the particle size of the small burnt gemstone particles is less than 1 mm, the particle size of the andalusite fine powder is less than 0.074 mm, and the particle size of the combined clay fine powder is less than 0.074 mm. mm, the particle size of the bauxite clinker powder is less than 0.043 mm. The chemical composition of each raw material is shown in Table 1.

[0028] Table 1...

Embodiment 2

[0036] This example provides a low-creep high-load soft refractory brick, the specific raw material composition is roughly the same as that of Example 1, the difference is that the quality of the pulp water in this example is the aggregate and the fine material 5% of the total mass, the aggregate and the fine material include the following raw materials in mass percentages: 30% of large particles of burnt gemstones, 29% of small particles of burnt gemstones, 15% of andalusite fine powder, 15% of combined clay fine powder And bauxite clinker powder 11%.

[0037] The preparation method of the low-creep high-load soft 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 adobe, and then the adobe is placed in the Dry in a tunnel-type drying hole for 24 hours, wherein the inlet temperature of the tunnel-type drying hole is controlled to be 60°C and the outlet temperatur...

Embodiment 3

[0040] This embodiment provides a low-creep and high-load soft refractory brick. The specific raw material components are roughly the same as those in Embodiment 1. The difference is that in this embodiment, the quality of the pulp water is the aggregate and the fine 5.5% of the total mass of the material, the aggregate and the fine material include the following raw materials in mass percentages: 32% of large particles of burnt gemstones, 27% of small particles of burnt gemstones, 18% of andalusite fine powder, 15% of combined clay fine powder % and bauxite clinker powder 8%.

[0041] The preparation method of the low-creep high-load soft 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 adobe, and then the adobe is placed in the Dry in a tunnel-type drying hole for 24 hours, wherein the inlet temperature of the tunnel-type drying hole is controlled to be 60°C ...

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Abstract

The invention provides a low-creep high-rcasting refractory brick. The low-creep high-rcasting refractory brick comprises a main material and an additive, the main material is mainly prepared from, by mass, 20%-40% of flint clay large particles, 20%-35% of flint clay small particles, 15%-25% of flint clay fine powder, 5%-15% of bonding clay fine powder and 5%-15% of bauxite clinker micro powder. The mass of the additive accounts for 4.5%-5.5% that of the main material. The invention further provides a preparation method and application of the low-creep high-rcasting refractory brick. The low-creep high-rcasting refractory brick is reasonable in component matching and has the thermal shock property, good thermal stability and high refractoriness under load, and therefore the service life of a carbon calcinatory with a flame path wall built by the low-creep high-rcasting refractory brick is prolonged.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a low-creep, high-load soft 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 in the adjacent material box through the high-load soft andalusite composite refractory brick material. block, the anode carbon block is roasted in an atmosphere without contact with the flame. 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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/622
CPCC04B35/66C04B35/622C04B2235/3217C04B2235/3463C04B2235/349C04B2235/77
Inventor 王法河贺延奎
Owner 济源市金峰耐火材料有限公司
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