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High-strength high-load-softening-temperature medium aluminum composite material and preparation method thereof

A high-strength, medium-aluminum technology, applied in the field of refractory materials, can solve the problems of low softening temperature under load and poor comprehensive use benefit, and achieve the effects of low porosity, low production cost, and improved performance

Inactive Publication Date: 2018-02-23
孝义市和中兴矿产有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art, provide a high-strength, high-load soft medium-aluminum synthetic material and its preparation method, and solve the problems of low load softening temperature and poor comprehensive use efficiency in the refractory products of existing industrial kilns question

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A high-strength, high-load soft medium-aluminum synthetic material in this embodiment is prepared from the following raw materials in weight percentage: 50% of high-alumina bauxite raw meal, 48% of quartz sand fine powder, and 2% of high-purity micro-silica powder .

[0019] Al after the loss on ignition of the high alumina bauxite raw meal 2 o 3 The content of ≥88%, TiO 2 The content of ≤4.0%, Fe 2 o 3 The content of ≤ 1.5%; SiO in the quartz sand powder 2 The content of ≥ 99%, the particle size of the quartz sand powder ≤ 5μm; the SiO in the high-purity micro-silica powder 2 The content of the quartz sand powder is more than or equal to 97%, and the particle size of the quartz sand powder is less than or equal to 1 μm.

[0020] A method for preparing a high-strength, high-load soft medium-aluminum composite material, comprising the following steps:

[0021] 1) Grinding and iron removal: Add 50% by weight of high-alumina bauxite raw meal, 48% by weight of quartz...

Embodiment 2

[0027] A high-strength, high-load soft medium-aluminum synthetic material in this embodiment is prepared from the following raw materials in weight percentage: 70% of high-alumina bauxite raw meal, 29% of quartz sand powder, and 1% of high-purity micro-silica powder .

[0028] Al after the loss on ignition of the high alumina bauxite raw meal 2 o 3 The content of ≥88%, TiO 2 The content of ≤4.0%, Fe 2 o 3 The content of ≤ 1.5%; SiO in the quartz sand powder 2 The content of ≥ 99%, the particle size of the quartz sand powder ≤ 5μm; the SiO in the high-purity micro-silica powder 2 The content of the quartz sand powder is more than or equal to 97%, and the particle size of the quartz sand powder is less than or equal to 1 μm.

[0029] A method for preparing a high-strength, high-load soft medium-aluminum composite material, comprising the following steps:

[0030] 1) Grinding and iron removal: Add 70% by weight of high-alumina bauxite raw meal, 29% by weight of quartz sand...

Embodiment 3

[0036] A high-strength, high-load soft medium-aluminum synthetic material in this embodiment is prepared from the following raw materials in weight percentage: 68% of high-alumina bauxite raw meal, 22% of quartz sand fine powder, and 10% of high-purity micro-silica powder .

[0037] Al after the loss on ignition of the high alumina bauxite raw meal 2 o 3 The content of ≥88%, TiO 2 The content of ≤4.0%, Fe 2 o 3 The content of ≤ 1.5%; SiO in the quartz sand powder 2 The content of ≥ 99%, the particle size of the quartz sand powder ≤ 5μm; the SiO in the high-purity micro-silica powder 2 The content of the quartz sand powder is more than or equal to 97%, and the particle size of the quartz sand powder is less than or equal to 1 μm.

[0038] A method for preparing a high-strength, high-load soft medium-aluminum composite material, comprising the following steps:

[0039] 1) Grinding and iron removal: Add 68% by weight of high-alumina bauxite raw meal, 22% by weight of quart...

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Abstract

The invention belongs to the technical field of fireproof materials, and particularly relates to a high-strength high-load-softening-temperature medium aluminum composite material and a preparation method thereof, mainly solving the technical problems of low load softening temperature and low comprehensive utilization efficiency of the fireproof materials produced by existing industrial furnaces.The high-strength high-load-softening-temperature medium aluminum composite material comprises, by weight, 50-70% of high-alumina raw materials, 22-48% of quartz sand micropowder and 1-10% of high-purity micro silica powder. The preparation method of the high-strength high-load-softening-temperature medium aluminum composite material includes 1), grinding, 2), high-pressure forming and blank making, 3), drying, 4), high-temperature firing and 5), cooling and crushing. The high-strength high-load-softening-temperature medium aluminum composite material has the advantages of high strength, low porosity, high load softening temperature, high heat-shock-resisting stability and the like.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a high-strength, high-load soft medium-aluminum synthetic material and a preparation method thereof. Background technique [0002] Our country is rich in bauxite resources, with a wide range of applications and large consumption, but a considerable part is used to produce ordinary high-alumina bricks for various kilns. And because the ordinary high alumina brick although Al 2 o 3 The content is high, but when used in high-temperature industrial kilns, the load softening temperature is not ideal, which restricts the promotion of kiln longevity, and is also not conducive to the promotion of my country's development of low-carbon economy, energy saving and consumption reduction. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the prior art, provide a high-strength, high-load soft medium-aluminum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/185C04B35/626
CPCC04B35/185C04B35/6261C04B35/62645C04B35/66C04B2235/3217C04B2235/3418
Inventor 闫承华闫祖宁曹宏光闫业玉刘丽君李海君闫祖渊
Owner 孝义市和中兴矿产有限公司
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