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Special silicon brick

A kind of silicon molybdenum brick, a special technology, applied in the field of refractory bricks, can solve the problems of short service life, reduce the economic benefits and production efficiency of cement manufacturers, and increase the manufacturing cost of the rotary kiln of the dry-process cement production line, so as to improve the thermal shock resistance, Good high temperature wear resistance and improved high temperature toughness

Inactive Publication Date: 2011-01-19
郑州瑞泰耐火科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the spinel bricks used in the transition zone before and after the rotary kiln of the dry process cement production line above 5,000 tons / day mostly rely on imports, which greatly increases the manufacturing cost of the dry process cement production line rotary kiln
At present, the service life of silica molybdenum, silica molybdenum and spinel bricks sold in the domestic market is short, which causes cement manufacturers to repair kilns frequently, directly reducing the economic benefits and production efficiency of cement manufacturers

Method used

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  • Special silicon brick

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The special silicon molybdenum brick described in the present invention is prepared from the following main materials, auxiliary materials and binders:

[0031] a, the weight percent distribution ratio of the main material is:

[0032] Bauxite clinker:

[0033] Particle size 4mm, 20%; Particle size 2mm, 20%; Particle size 1mm, 15%;

[0034] The physicochemical index of described bauxite clinker is: Al 2 o 3 ≥88%; Fe 2 o 3 ≤1%; impurity ≤1%; bulk density ≥3.3g / cm 3 ;Water absorption ≤1%;

[0035] Silicon carbide: particle size 1mm, 20%;

[0036] The physical and chemical performance index of the silicon carbide is: SiC≥97% Fe 2 o 3 ≤0.5%; F, C≤0.25%;

[0037] B, the weight percent distribution ratio of described auxiliary material is:

[0038] Fused corundum: 5%, finer than 325 mesh;

[0039] The physical and chemical performance index of the fused corundum is: Al 2 o 3 ≥99%; Fe 2 o 3 ≤0.15%; bulk density ≥3.5g / cm 3 ;

[0040] α-Sialon: 7%, finer than 2...

Embodiment 2

[0053] The special silicon molybdenum brick described in the present invention is prepared from the following main materials, auxiliary materials and binders:

[0054] a, the weight percent distribution ratio of the main material is:

[0055] Bauxite clinker:

[0056] Particle size 3mm, 22%; Particle size 1.5mm, 22%; Particle size 1mm, 16%;

[0057] The physicochemical index of described bauxite clinker is: Al 2 o 3 ≥88%; Fe 2 o 3 ≤1%; impurity ≤1%; bulk density ≥3.3g / cm 3 ;Water absorption ≤1%;

[0058]Silicon carbide: particle size 0.88mm, 10%;

[0059] The physical and chemical performance index of the silicon carbide is: SiC≥97% Fe 2 o 3 ≤0.5%; F, C≤0.25%;

[0060] B, the weight percent distribution ratio of described auxiliary material is:

[0061] Fused corundum: 8%, finer than 325 mesh;

[0062] The physical and chemical performance index of the fused corundum is: Al 2 o 3 ≥99%; Fe 2 o 3 ≤0.15%; bulk density ≥3.5g / cm 3 ;

[0063] β-Sialon: 10%, finer t...

Embodiment 3

[0073] The special silicon molybdenum brick described in the present invention is prepared from the following main materials, auxiliary materials and binders:

[0074] a, the weight percent distribution ratio of the main material is:

[0075] Bauxite clinker:

[0076] Particle size 2.1mm, 23%; Particle size 1.1mm, 25%; Particle size 0.6mm, 19%;

[0077] The physicochemical index of described bauxite clinker is: Al 2 o 3 ≥88%; Fe 2 o 3 ≤1%; impurity ≤1%; bulk density ≥3.3g / cm 3 ;Water absorption ≤1%;

[0078] Silicon carbide: particle size 0.5mm, 10%;

[0079] The physical and chemical performance index of the silicon carbide is: SiC≥97% Fe 2 o 3 ≤0.5%; F, C≤0.25%;

[0080] B, the weight percent distribution ratio of described auxiliary material is:

[0081] Fused corundum: 9%, finer than 325 mesh;

[0082] The physical and chemical performance index of the fused corundum is: Al 2 o 3 ≥99%; Fe 2 o 3 ≤0.15%; bulk density ≥3.5g / cm 3 ;

[0083] β-Sialon or α-Sial...

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Abstract

The invention discloses a special silicon brick. The special silicon brick is prepared from a main material, an auxiliary material and a binding agent, wherein the main material comprises the following components in percentages by weight: 20-25 percent of bauxite chamotte with granularity of more than 2 mm and not less than 4 mm, 2-20 percent of bauxite chamotte with granularity of more than 1 mm and not less than 2 mm, 15-20 percent of bauxite chamotte with granularity of not more than 1 mm and 10-20 percent of silicon carbide with granularity of not more than 1 mm; the auxiliary material comprises the following components in percentages by weight: 5-10 percent of electrofused corindon thinner than 325 meshes, 5-10 percent of sialon thinner than 200 meshes, 5-10 percent of andalusite with granularity of not more than 1 mm, 3-5 percent of soft binding clay thinner than 200 meshes; and the binding agent is a spent pulping liquor at the concentration of 1.18-1.25 g / cm<3> and accounts for 4-4.5 percent of the sum of the weight of the main material and the auxiliary material. In the invention, by utilizing a strict scientific proportioning, high intensity ceramic combination is finally obtained for various materials, thereby the intensity of the product is greatly enhanced, the high temperature performance is stable and the high temperature wear resistance is better.

Description

technical field [0001] The invention relates to the field of refractory bricks, in particular to special silica bricks. Background technique [0002] With the rapid development of the cement industry and the successful application of the new dry process kiln decomposition technology, great vitality has been injected into the cement industry. At present, the clinker production capacity of a single cement kiln has grown from 4,000 tons / day and 5,000 tons / day in the past to a scale of up to 10,000 tons / day. The rapid development of the cement industry provides great opportunities and challenges for the refractory industry. At present, the spinel bricks used in the transition zone before and after the rotary kiln of the dry process cement production line above 5,000 tons / day mostly rely on imports, which greatly increases the manufacturing cost of the dry process cement production line rotary kiln. At present, the service life of silica molybdenum bricks, silica molybdenum bri...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 李全有明安会曹伟赵路生周海军靳建英
Owner 郑州瑞泰耐火科技有限公司
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