Solid-melting Ti(C,N) unfired silicon mullite brick and preparation method thereof

A technology of silica brick and fused mullite, which is applied in the field of solid-melt Ti non-fired silica brick and its preparation, can solve the problems of increasing energy consumption and environmental impact, and achieve shortened production cycle, reduced consumption, good thermal The effect of shock stability and wear resistance

Active Publication Date: 2020-12-04
TONGDA REFRACTORY TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the silica bricks currently used need to be fired at high temperature. The firing process not only increases energy consumption, but also has a certain impact on the environment.

Method used

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  • Solid-melting Ti(C,N) unfired silicon mullite brick and preparation method thereof
  • Solid-melting Ti(C,N) unfired silicon mullite brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A solid solution Ti(C,N) unfired silica brick, prepared from the following components in weight percentage: solid solution Ti(C,N) fused mullite 80%, 90% silicon carbide 2% , calcined alumina powder 10%, bonded clay 8%; of which 3-5mm fused mullite 10%, 1-3mm fused mullite 35%, 0-1mm fused mullite 20%, 200 mesh Fused mullite 15%. Add 3.2% of aluminum dihydrogen phosphate (specific gravity 1.38) accounting for the total weight of the above components.

[0033] Among them, the solid solution Ti(C,N) fused mullite index is: Al 2 o 3 71.32%, SiO 2 20.02%, Fe 2 o 3 0.49%, TiO 2 6.09%, bulk density is 3.15g / m 3 ;

[0034] The preparation method of above-mentioned solid solution Ti (C, N) unfired silica brick, comprises the following steps:

[0035] (1) Weigh the raw materials according to the above ratio, put the fine powder raw materials 15kg fused mullite, 2kg silicon carbide, 8kg bonded clay and 10kg calcined alumina powder into the double-screw premixer for pr...

Embodiment 2

[0040] A solid solution Ti(C,N) unfired silica brick, prepared from the following components in weight percentage: solid solution Ti(C,N) fused mullite 80%, 93 silicon carbide 2% , calcined alumina powder 10%, bonded clay 8%; of which 3-5mm fused mullite 10%, 1-3mm fused mullite 35%, 0-1mm fused mullite 20%, 200 mesh Fused mullite 15%. Add 3.2% of aluminum dihydrogen phosphate (specific gravity 1.38) accounting for the total weight of the above components.

[0041] Among them, the solid solution Ti(C,N) fused mullite index is: Al 2 o 3 71.32%, SiO 2 20.02%, Fe 2 o 3 0.49%, TiO 2 6.09%, bulk density is 3.15g / m 3 .

[0042]The preparation method of above-mentioned solid solution Ti (C, N) unfired silica brick, comprises the following steps:

[0043] (1) Weigh the raw materials according to the above ratio, put the fine powder raw materials 15kg fused mullite, 2kg silicon carbide, 8kg bonded clay and 10kg calcined alumina powder into the double-screw premixer for prem...

Embodiment 3

[0048] A solid solution Ti(C,N) unfired silica brick prepared from the following components in weight percentage: Al 2 o 3 80% of fused mullite with a content of 70%, 2% of 97 silicon carbide, 10% of calcined alumina powder, and 8% of bonded clay; 10% of 3-5mm fused mullite, 1-3mm fused mullite 35%, 0-1mm fused mullite 20%, 200 mesh fused mullite 15%. Add 3.2% of aluminum dihydrogen phosphate (specific gravity 1.38) accounting for the total weight of the above components.

[0049] Among them, the solid solution Ti(C,N) fused mullite index is: Al 2 o 3 71.32%, SiO 2 20.02%, Fe 2 o 3 0.49%, TiO 2 6.09%, bulk density is 3.15g / m 3 .

[0050] The preparation method of above-mentioned solid solution Ti (C, N) unfired silica brick, comprises the following steps:

[0051] (1) Weigh the raw materials according to the above ratio, put the fine powder raw materials 15kg fused mullite, 2kg silicon carbide, 8kg bonded clay and 10kg calcined alumina powder into the double-screw...

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Abstract

The invention provides a solid-melting Ti(C,N) unfired silicon mullite brick and a preparation method thereof. The unfired silicon mullite brick is prepared from the following components in percentageby weight: 72-85% of solid-solution Ti(C,N) fused mullite, 1-5% of silicon carbide, 5-15% of calcined alumina powder and 3-8% of binding clay. and a binding agent accounting for 3-5% of the total weight of the components is added. According to the baking-free silicon mullite brick, fused mullite of solid solution Ti(C,N) is used as a main raw material and is produced and prepared from low-grade bauxite, so that consumption of high-grade bauxite resources is avoided, the low-grade bauxite resources rich in resources can be fully utilized, and the produced silicon mullite brick is outstanding in performance; in the preparation process of the silicon mullite brick, low-temperature treatment is adopted, high-temperature firing is not needed, compared with traditional silicon mullite brick preparation, the production period is shortened, the production cost is reduced, pollutant emission in the high-temperature process is avoided, environmental protection and comprehensive utilization of bauxite are facilitated, and obvious social and economic benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a solid solution Ti(C,N) unfired silica molybdenum brick and a preparation method thereof. Background technique [0002] my country has unique high-alumina bauxite resources, and the proven reserves are about one billion tons, ranking first in the world. However, more than 70% of them are medium and low-grade ores, resulting in a very low utilization rate of ore resources. A large number of low- and medium-grade ores are discarded during the mining process, and the waste of resources is very serious. [0003] Traditional silica bricks are made of high-alumina bauxite clinker and silicon carbide as raw materials through high-pressure molding and high-temperature firing. They have excellent properties such as high strength, wear resistance, and excellent thermal shock stability. Continuous oxidation to form a protective layer and reduce ring formation. Si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/3463C04B2235/3826C04B2235/3217C04B2235/349C04B2235/447C04B2235/606C04B2235/96C04B2235/77C04B2235/9607
Inventor 孔祥魁康剑马淑龙马飞王治峰孙艳粉张积礼倪高金高长贺
Owner TONGDA REFRACTORY TECH CO LTD
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