High intensity low conductivity magnesium aluminate spinel brick

A magnesia-alumina spinel brick and magnesia-alumina technology, which is applied in the field of refractory materials, can solve problems such as high temperature, energy waste, and affecting the normal operation of cement enterprises, and achieve excellent sintering performance, good economic and social benefits.

Active Publication Date: 2013-09-04
TONGDA REFRACTORY TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As we all know, cement enterprises are high-energy-consuming industries. With the arrival of power peak period, cement enterprises will be constrained by power cuts, which will affect the normal operation of cement enterprises. Factors such as the reduction in production and the unstable operation of the rotary kiln
[0003] In order to cooperate with the "green refractory" strategy and realize "excellent variety quality, resource and energy conservation, environmental protection in the production process, and harmless use process", high-strength and low-conductivity magnesium-aluminum spinel bricks will replace the traditional cement kiln bricks. Magnesium-aluminum spinel brick products, traditional products are heavy materials, with high thermal conductivity, about 3.0 W/m·℃, when used

Method used

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  • High intensity low conductivity magnesium aluminate spinel brick
  • High intensity low conductivity magnesium aluminate spinel brick

Examples

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Effect test

Embodiment 1

[0021] Example 1: A high-strength and low-conductivity magnesium-alumina spinel brick. The raw materials for its preparation are as follows: 24% of magnesium-aluminum composite material with a particle size of 5-3mm, 24% of magnesium-aluminum composite material with a particle size of 3-1mm. 15% of fused magnesia with a particle size of 1~0mm, 16% of fused magnesia with a particle size of 180F, 11% of magnesium-aluminum composite material with a particle size of 180F, 6% of fused magnesia-aluminum spinel with a particle size of 180F, а-Al 2 o 3 Fine powder is 4%, plus calcium lignosulfonate accounting for 4% of the total weight of the above raw materials;

[0022] The preparation method of the magnesium-aluminum synthetic material comprises the following steps:

[0023] (1) Raw materials: the raw materials of the magnesium-aluminum synthetic material are expressed in weight percentages, 93.85% of magnesite and 6.15% of industrial aluminum hydroxide;

[0024] (2) Grinding: we...

Embodiment 2

[0029] Example 2: A high-strength and low-conductivity magnesium-aluminum spinel brick, in terms of weight percentage, its preparation raw materials are as follows: 23% of magnesium-aluminum composite material with a particle size of 5-3mm, 24% of magnesium-aluminum composite material with a particle size of 3-1mm, 16% of fused magnesia with a particle size of 1~0mm, 16% of fused magnesia with a particle size of 180F, 11% of magnesium-aluminum composite material with a particle size of 180F, 6% of fused magnesia-aluminum spinel with a particle size of 180F, а-Al 2 o 3 Fine powder is 4%, plus calcium lignosulfonate accounting for 4% of the total weight of the above raw materials;

[0030] The preparation method of the magnesium-aluminum synthetic material comprises the following steps:

[0031] (1) Raw materials: the raw materials of the magnesium-aluminum synthetic material are expressed in weight percentages, 88.3% of magnesite and 11.7% of industrial aluminum hydroxide;

...

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Abstract

The invention relates to a high intensity low conductivity magnesium aluminate spinel brick. The high intensity low conductivity magnesium aluminate spinel brick comprises the following ingredients: 20-25% magnesium aluminate composite material with granularity of 5-3 mm, 20-25% magnesium aluminate composite material with granularity of 3-1 mm, 12-16% fused magnesite with granularity of 1-0 mm, 12-16% fused magnesite with granularity of 180 F, 10-12% magnesium aluminate composite material with granularity of 180 F, 4-8% fused magnesium aluminate spinel with granularity of 180 F, 2-5% Alpha-Al2O3 fine powder, and calcium lignosulphonate which accounts for 3.5-5 weight percentage of the raw material. The high intensity low conductivity magnesium aluminate spinel brick is suitable for cement rotary kiln, has good sintering performance, thermal shock resistance, erosion resistance and permeating resistance, and has good economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a high-strength and low-magnesia aluminum spinel brick. Background technique [0002] As we all know, cement enterprises are high-energy-consuming industries. With the arrival of the power peak period, cement enterprises will be restricted by power cuts, which will affect the normal operation of cement enterprises, resulting in reduced production and unstable operation of rotary kilns. [0003] In order to cooperate with the "green refractory" strategy and realize "excellent variety quality, resource and energy conservation, environmental protection in the production process, and harmless use process", high-strength and low-conductivity magnesium-aluminum spinel bricks will replace the traditional cement kiln bricks. Magnesium-aluminum spinel brick products, traditional products are heavy materials, with high thermal conductivity, about 3.0 W / m·℃, when us...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/443
Inventor 高长贺张积礼周新功孙艳粉付武斌马淑龙王治峰马飞王浩杰刘怀岗
Owner TONGDA REFRACTORY TECH CO LTD
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