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A kind of preparation method of composite aluminum chrome brick

A composite aluminum-chrome brick and composite aluminum technology, which is applied in the field of aluminum-chrome bricks, can solve problems such as insufficient thermal insulation effect, insufficient corrosion resistance, and insufficient practicality, and achieve improved corrosion resistance and thermal insulation capabilities with low cost , the effect of saving resources

Active Publication Date: 2021-06-25
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 preparation method of composite aluminum-chrome brick: its specific preparation steps are as follows:

[0022] 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 Raymond machine Grinding, grinding mullite particles into mullite dust, the particle size of the mullite is 200 mesh, then pouring the ground powder into pure water for cleaning, and then drying it with a vacuum spray dryer Made into mullite powder;

[0023] S2. Preparation of raw materials for the incineration laye...

Embodiment 2

[0028] A preparation method of composite aluminum-chrome brick: its specific preparation steps are as follows:

[0029] 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 Raymond machine. Grinding, grinding mullite particles into mullite dust, the particle size of the mullite is 250 mesh, then pouring the ground powder into pure water for cleaning, and then drying it with a vacuum spray dryer Made into mullite powder;

[0030] S2. Preparation of raw materials for the incineration layer: Put ...

Embodiment 3

[0035] A preparation method of composite aluminum-chrome brick: its specific preparation steps are as follows:

[0036] 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 into the Raymond machine Grinding, grinding mullite particles into mullite dust, the particle size of the mullite is 300 mesh, then pouring the ground powder into pure water for cleaning, and then drying it with a vacuum spray dryer Made into mullite powder;

[0037] S2. Preparation of raw materials for the incineration layer: P...

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Abstract

The invention discloses a preparation method of a composite aluminum-chromium brick. The invention adopts fused corundum, chrome corundum, alumina powder, chrome slag, zirconia powder, titanium dioxide, animal bone char and mullite as raw materials. A series of processes such as roasting, Raymond, mixing and trapping are used to make composite aluminum-chrome bricks. Animal bone charcoal is used as raw material to improve the hardness of aluminum-chrome bricks and reduce its own weight. Fused corundum, chrome corundum, alumina powder , chrome slag and mullite are the main raw materials, the cost is reduced, and the raw materials are sufficient. Insulation capacity.

Description

technical field [0001] The invention relates to the field of aluminum-chrome bricks, in particular to a method for preparing composite aluminum-chrome bricks. 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 method for preparing composite aluminum-chrome bricks to solve the problems raised in the above-mentioned background technology. [0004] To achieve the above object, the present invention provides the following technical solutions: [0005] A preparation m...

Claims

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Application Information

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Patent Type & Authority Patents(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