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Composite alumina-chrome brick and production method thereof

A technology of aluminum-chrome bricks and composite aluminum, applied in the field of aluminum-chrome bricks, can solve the problems of insufficient thermal insulation effect, insufficient corrosion resistance, insufficient practicability, etc., and achieves improved corrosion resistance and thermal insulation ability, low cost, The effect of saving resources

Active Publication Date: 2018-10-19
CHANGXING SHENGHUA REFRACTORIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the aluminum-chrome bricks used in the market are not good enough in corrosion resistance, high in weight, not good in practicability, and not good enough in heat preservation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A composite aluminum-chrome brick, the raw materials of which are composed by weight: 65 parts of fused corundum, 5 parts of chrome corundum, 3 parts of alumina powder, 10 parts of chromium slag, 10 parts of zirconia powder, 10 parts of titanium dioxide, 15 parts of animal bone charcoal, 95 parts of mullite.

[0022] A preparation method of composite aluminum-chrome brick: its specific preparation steps are as follows:

[0023] S1. Preparation of mullite powder: put the mullite into a pulverizer for preliminary crushing, and pulverize into mullite particles, the particle size of the pulverized mullite particles is 50 mesh, and then put the mullite particles into a roasting furnace Carry out high-temperature roasting, and the temperature inside the roasting furnace is controlled at 1700 degrees Celsius. After the roasting is completed, the mullite particles are taken out, and when it is lowered to room temperature, take half of the mullite particles and put them into the...

Embodiment 2

[0028] A composite aluminum-chrome brick, the raw materials of which are composed by weight: 70 parts of fused corundum, 10 parts of chrome corundum, 5 parts of alumina powder, 15 parts of chromium slag, 13 parts of zirconia powder, 13 parts of titanium dioxide, 20 parts of animal bone charcoal, 100 parts of mullite.

[0029] A preparation method of composite aluminum-chrome brick: its specific preparation steps are as follows:

[0030] S1. Preparation of mullite powder: put mullite into a pulverizer for preliminary crushing, and pulverize into mullite particles. The particle size of the pulverized mullite particles is 55 mesh, and then put the mullite particles into a roasting furnace Carry out high-temperature roasting. The temperature inside the roasting furnace is controlled at 1750 degrees Celsius. After the roasting is completed, the mullite particles are taken out, and when it is lowered to room temperature, take half of the mullite particles and put them into the Raymo...

Embodiment 3

[0035] A composite aluminum-chrome brick, the raw materials of which are composed by weight: 65-75 parts of fused corundum, 5-15 parts of chrome corundum, 6 parts of alumina powder, 20 parts of chromium slag, 15 parts of zirconia powder, titanium 15 parts of white powder, 25 parts of animal bone charcoal, 105 parts of mullite.

[0036] A preparation method of composite aluminum-chrome brick: its specific preparation steps are as follows:

[0037] S1. Preparation of mullite powder: put mullite into a pulverizer for preliminary crushing, and pulverize into mullite particles. The particle size of the pulverized mullite particles is 60 mesh, and then put the mullite particles into a roasting furnace Carry out high-temperature roasting, and the temperature inside the roasting furnace is controlled at 1800 degrees Celsius. After the roasting is completed, the mullite particles are taken out, and when it is lowered to room temperature, take half of the mullite particles and put them ...

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Abstract

The invention discloses a composite alumina-chrome brick and a production method thereof. The composite alumina-chrome brick is produced from fused corundum, chrome corundum, alumina powder, chromiumslag, zirconia powder, titanium dioxide, animal bone charcoal and mullite through crushing, calcining, Raymond milling, mixing and trapping processes. The animal bone charcoal is used as one of raw materials to improve the hardness of the alumina-chrome brick and reduce the self weight; and the fused corundum, chrome corundum, alumina powder, chromium slag and mullite are also used as the main rawmaterials, so the cost is reduced, and the raw materials are sufficient. The composite alumina-chrome brick and the production method thereof have the advantage of low cost, sufficiency in the raw materials, treatment of waste materials, environment protection, resource saving, and greatly improvement of the corrosion resistance and the heat insulation capability of the alumina-chrome brick.

Description

technical field [0001] The invention relates to the field of aluminum-chrome bricks, in particular to a composite aluminum-chrome brick and a preparation method thereof. Background technique [0002] Aluminum-chrome bricks are mainly composed of corundum and chromium trioxide. They have less impurity content, stable high-temperature chemical properties, high melting point, high hardness, and high strength. Most of them are made of aluminum-chromium slag. However, the aluminum-chrome bricks used in the market are not good enough in corrosion resistance, high in weight, not good enough in practicability, and not good enough in heat preservation. Contents of the invention [0003] The object of the present invention is to provide a composite aluminum-chrome brick and a preparation method thereof, so as to solve the problems raised in the above-mentioned background technology. [0004] To achieve the above object, the present invention provides the following technical solutio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/185C04B35/622
CPCC04B35/185C04B35/62204C04B2235/3217C04B2235/3232C04B2235/3241C04B2235/3244C04B2235/422
Inventor 佘培华佘文浩
Owner CHANGXING SHENGHUA REFRACTORIES CO LTD