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Super-strength osmosis-resistant high-aluminum brick

A technology of anti-permeation and high-alumina bricks, which is applied in the field of refractory products for high-temperature kilns and super anti-permeation high-alumina bricks. It can solve the problems of refractory material penetration and peeling, reduce the quality of molten aluminum, and low strength, so as to prevent penetration and adhesion. , good corrosion resistance, and the effect of improving the strength of the product

Inactive Publication Date: 2015-07-29
REFRACTORY MATERIAL OF SINOSTEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, when users choose lining refractory materials such as aluminum smelting furnaces, holding furnaces, and homogenizing furnaces involved in the processing of molten aluminum, they have always paid great attention to the conventional performance of refractory materials, and paid little attention to the permeability of molten aluminum. During the process, refractory materials with excellent conventional performance are often penetrated and eroded by molten aluminum, which not only leads to low service life of refractory materials, time-consuming and labor-consuming, but also pollutes molten aluminum and reduces the quality of molten aluminum
Ordinary high-alumina bricks commonly used in aluminum smelting furnaces have large porosity and low strength. Aluminum liquid is easy to react with it and stick to it. Poor penetration resistance can easily cause refractory materials to permeate and peel off.

Method used

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  • Super-strength osmosis-resistant high-aluminum brick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A super-permeability-resistant high-alumina brick is characterized in that its raw materials are proportioned according to the following parts by weight:

[0032] (1). Fused brown corundum particles: 58 parts, wherein the weight ratio of fused brown corundum with a particle size of 1-0 mm to fused brown corundum with a particle size of 3-1 mm is 1:2;

[0033] (2). Fused brown corundum fine powder 200 mesh: 30 parts;

[0034] (3). Alumina micropowder ≤ 5 microns: 10 parts;

[0035] (4).Super-grade Guangxi white clay 200 mesh: 2 parts;

[0036] 7 parts of 85% concentration solution of binding agent.

[0037] The manufacturing process of the super-strong anti-permeability high-alumina brick is:

[0038] (1) Premixing: Mix the fused brown corundum particles in the above raw materials together according to the stated ratio, and stir evenly;

[0039] (2) Mixing: first mix the pre-mixed granules according to the stated weight ratio, add a special binder 85% concentration s...

Embodiment 2

[0043] A super-permeability-resistant high-alumina brick is characterized in that its raw materials are proportioned according to the following parts by weight:

[0044] (1) Fused brown corundum particles: 50 parts; wherein the weight ratio of fused brown corundum with a particle size of 1-0 mm to fused brown corundum with a particle size of 3-1 mm is 1:2;

[0045] (2) Fused brown corundum fine powder 200 mesh: 35 parts;

[0046] (3) Aluminum oxide powder ≤ 5 microns: 12 parts

[0047] (4) 200 mesh super-grade Guangxi white clay: 3 parts;

[0048] 6 parts of special binder 85% concentration solution.

[0049] The manufacturing process of the super-strong anti-permeation high-alumina brick is the same as that of Example 1, and the firing time is 6 hours.

Embodiment 3

[0051] A super-permeability-resistant high-alumina brick is characterized in that its raw materials are proportioned according to the following parts by weight:

[0052] (1) Fused brown corundum particles: 63 parts; wherein the weight ratio of fused brown corundum with a particle size of 1-0mm to fused brown corundum with a particle size of 3-1mm is 1:2;

[0053] (2) Fused brown corundum fine powder 200 mesh: 25 parts;

[0054] (3) Aluminum oxide powder ≤ 5 microns: 10 parts;

[0055] (4) 200 mesh super-grade Guangxi white clay: 2 parts;

[0056] 8 parts of special binder 85% concentration solution.

[0057] The manufacturing process of the super-strong anti-permeability high-alumina brick is the same as that of Example 1, and the firing time is 5 hours.

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Abstract

The invention discloses a super-strength osmosis-resistant high-aluminum brick. The super-strength osmosis-resistant high-aluminum brick is prepared from fused brown corundum, alumina micro-powder, super Guangxi white clay and a specific binder according to a certain ratio, has the characteristics of low porosity, high strength, no adhesion reaction with an aluminum liquid and excellent erosion resistance, can satisfy the severe conditions of the existing aluminum melting furnace, holding furnace and homogenizing furnace, improves a service life of the whole furnace inner liner and improves aluminum liquid quality.

Description

technical field [0001] The invention belongs to the field of refractory materials, and in particular relates to a refractory product for a high-temperature kiln—a super-permeation-resistant high-alumina brick. Background technique [0002] At present, when users choose lining refractory materials such as aluminum smelting furnaces, holding furnaces, and homogenizing furnaces involved in the processing of molten aluminum, they have always paid great attention to the conventional performance of refractory materials, and paid little attention to the permeability of molten aluminum. During the process, refractory materials with excellent conventional performance are often penetrated and eroded by molten aluminum, which not only leads to low service life of refractory materials, time-consuming and labor-consuming, but also pollutes molten aluminum and reduces the quality of molten aluminum. Ordinary high-alumina bricks commonly used in aluminum smelting furnaces have large porosi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/101C04B35/622
Inventor 易慧敏张效峰雷其针唐舜孙峰
Owner REFRACTORY MATERIAL OF SINOSTEEL CORP
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