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Silicon mullite red brick for large cement kiln and its producing method

A silicon molybdenum brick and a manufacturing method technology, applied in the field of refractory materials, can solve the problems of short service life and high cost, and achieve the effects of low cost, long operation period and obvious heat insulation effect

Active Publication Date: 2007-04-11
江苏君耀耐磨耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the cooling section, transition section, kiln mouth and other parts of the large cement kiln chamber, ordinary refractory bricks can no longer meet the requirements. At present, most of the large cement kilns use imported spinel, but its cost is high and its service life is not long. Only last about 5-6 months

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1, large-scale cement kiln uses silicon Mo red brick, the weight proportion of each component is:

[0016] Super Bauxite Aggregate 0-6mm Al 2 o 3 ≥85% 50%

[0017] Silicon carbide ≤0.088mm SiC≥92% 10%

[0018] Fused white corundum powder ≤0.088mm Al 2 o 3 ≥98% 20%

[0019] Selected andalusite powder ≤0.088mm Al 2 o 3 ≥58% 15%

[0020] Bound clay ≤0.088mm Al 2 o 3 ≥38% 5%

[0021] Plus:

[0022] Yellow dextrin 0.3%

[0023] Methylcellulose 0.5%

[0024] water 4%

[0025] Mix the raw materials in the above proportions, make mud in a kneader, and shape it under a pressure of 630KN. The shaped bricks are sintered in a tunnel kiln at 1500 ° C ± 10.

Embodiment 2

[0026] Embodiment 2, with reference to Example 1, the weight proportion of each component is:

[0027] Super Bauxite Aggregate 0-6mm Al 2 o 3 ≥85% 56%

[0028] Silicon carbide ≤0.088mm SiC≥92% 20%

[0029] Fused white corundum powder ≤0.088mm Al 2 o 3 ≥98% 8%

[0030] Selected andalusite powder ≤0.088mm Al 2 o 3 ≥58% 10%

[0031] Bound clay ≤0.088mm Al 2 o 3 ≥38% 6%

[0032] Plus:

[0033] Yellow dextrin 0.5%

[0034] Methylcellulose 0.6%

[0035] water 3%

Embodiment 3

[0036] Embodiment 3, with reference to Example 1, the weight proportion of each component is:

[0037] Super Bauxite Aggregate 0-6mm Al 2 o 3 ≥85% 60%

[0038] Silicon carbide ≤0.088mm SiC≥92% 11%

[0039] Fused white corundum powder ≤0.088mm Al 2 o 3 ≥98% 10%

[0040] Selected andalusite powder ≤0.088mm Al 2 o 3 ≥58% 12%

[0041] Bound clay ≤0.088mm Al 2 o 3 ≥38% 7%

[0042] Plus:

[0043] Yellow Dextrin 0.6%

[0044] Methylcellulose 0.3%

[0045] water 5%

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PUM

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Abstract

The present invention is silicon mullite red brick for large cement kiln and belongs to the field of refractory material technology. The silicon mullite red brick is made with alum as aggregate, silicon carbide, electrocast white alundum powder, andalusite powder, clay, yellow dextrin, methyl cellulose and water, and through mixing, pressing and sintering. Practical application in large cement kiln shows that the silicon mullite red brick has high heat insulating effect and long service life.

Description

technical field [0001] The invention belongs to the field of refractory materials, in particular to a silica molybdenum brick for large-scale cement kilns, and at the same time provides a manufacturing method of the silica molybdenum brick. Background technique [0002] With the continuous update of cement production technology, the main equipment of cement production has been developed to be large-scale. Increasing output, improving quality and saving energy consumption have become the key to increasing efficiency in production management. In the cooling section, transition section, kiln mouth and other parts of the large cement kiln chamber, ordinary refractory bricks can no longer meet the requirements. At present, most of the large cement kilns use imported spinel, but its cost is high and its service life is not long. It can only last about 5-6 months. Contents of the invention [0003] The invention provides a low-cost domestically produced large-scale cement kiln s...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B35/10
Inventor 俞益君俞占明徐志坚徐德军庄岳明
Owner 江苏君耀耐磨耐火材料有限公司
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