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Al-Al2O3 sliding plate brick added with titanium nitride coated mullite and production method of Al-Al2O3 sliding plate brick

A sliding brick and titanium nitride technology, which is applied in the field of functional refractory materials, can solve problems such as not meeting clean steel smelting requirements, destroying product structure, and affecting product life, achieving good thermal conductivity, chemical stability, and good corrosion resistance , Improve the effect of high temperature performance

Active Publication Date: 2021-10-01
HENAN RONGJIN HIGH TEMPERATRUE MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Skateboard bricks usually use carbon-containing refractory materials to make them have excellent erosion resistance and thermal shock stability. However, carbon-containing refractory materials are prone to carbon oxidation at high temperatures, which will damage the product structure and affect the product life. Pollution of molten steel does not meet the smelting requirements of clean steel, limiting its application

Method used

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  • Al-Al2O3 sliding plate brick added with titanium nitride coated mullite and production method of Al-Al2O3 sliding plate brick
  • Al-Al2O3 sliding plate brick added with titanium nitride coated mullite and production method of Al-Al2O3 sliding plate brick
  • Al-Al2O3 sliding plate brick added with titanium nitride coated mullite and production method of Al-Al2O3 sliding plate brick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of Al-Al with adding titanium nitride to wrap mullite 2 o 3 Skateboard bricks, by weight percentage, the raw materials are: 74% tabular alumina, 3% CL370, 3% RG4000, 10% fused mullite, 10% metal aluminum powder, plus the total amount of the above raw materials 3% thermosetting phenolic resin.

[0034]The particle size range of tabular corundum is: 1mm<particle size 1≤2mm, 0.5mm<particle size 2≤1mm, 0.044mm<particle size 3≤0.5mm, 0<particle size 4≤0.044mm, and the weight ratio of different particle sizes is: particle size 1: Granularity 2: Granularity 3: Granularity 4 = 20:22:20:12.

[0035] The particle size range of fused mullite is: 1 ≤ particle size ≤ 2mm; fused mullite is a Ti-containing material prepared by using low-grade or waste bauxite through high-temperature electric melting at 2000°C. 2 o 3 Fused mullite, by weight percentage, the main component weight content of fused mullite is Al 2 o 3 : 70-75%, SiO 2 : 10-15%, TiO 2 : 5-8%.

[0036] The p...

Embodiment 2

[0048] A kind of Al-Al with adding titanium nitride to wrap mullite 2 o 3 Skateboard tiles, by weight percentage, the raw materials are: 64% tabular alumina, 3% CL370, 3% RG4000, 20% fused mullite, 10% metal aluminum powder, plus the total amount of the above raw materials 3.5% thermosetting phenolic resin.

[0049] The particle size range of tabular corundum is: 1mm<particle size 1≤2mm, 0.5mm<particle size 2≤1mm, 0.044mm<particle size 3≤0.5mm, 0<particle size 4≤0.044mm, and the weight ratio of different particle sizes is: particle size 1: Granularity 2: Granularity 3: Granularity 4 = 10:22:20:12.

[0050] The particle size range of fused mullite is: 1 ≤ particle size ≤ 2mm; fused mullite is a Ti-containing material prepared by using low-grade or waste bauxite through high-temperature electric melting at 2000°C. 2 o 3 Fused mullite, by weight percentage, the main component weight content of fused mullite is Al 2 o 3 : 70-75%, SiO 2 : 10-15%, TiO 2 : 5-8%.

[0051] The...

Embodiment 3

[0053] A kind of Al-Al with adding titanium nitride to wrap mullite 2 o 3 Skateboard tiles, by weight percentage, the raw materials are: 54% tabular alumina, 3% CL370, 3% RG4000, 30% fused mullite, 10% metal aluminum powder, plus the total amount of the above raw materials 4% thermosetting phenolic resin.

[0054] The particle size range of tabular corundum is: 1mm

[0055] The particle size range of fused mullite is: 1 ≤ particle size ≤ 2mm; fused mullite is a Ti-containing material prepared by using low-grade or waste bauxite through high-temperature electric melting at 2000°C. 2 o 3 Fused mullite, by weight percentage, the main component weight content of fused mullite is Al 2 o 3 : 70-75%, SiO 2 : 10-15%, TiO 2 : 5-8%.

[0056] The pr...

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Abstract

The invention provides an Al-Al2O3 sliding plate brick added with titanium nitride coated mullite and a production method of the Al-Al2O3 sliding plate brick. The refractory material comprises the following raw materials in percentage by weight: 54-74% of corundum, 6-12% of activated aluminum oxide micro powder, 10-30% of fused mullite, 5-10% of metal aluminum powder and thermosetting phenolic resin which accounts for 3-4% of the total amount of the raw materials. By introducing a titanium nitride-coated fused mullite raw material and utilizing a metal bonding technology, the dependence of a traditional sliding plate brick on carbon is overcome, the adverse effects of reduction of the carbon content of a carbon-containing refractory material on erosion resistance and thermal shock resistance of the carbon-containing refractory material are solved, a burning-free and immersion-free production process is adopted, the production cost is reduced, the production period is shortened. Meanwhile, the sliding plate brick has the characteristics of excellent strength, oxidation resistance, thermal shock resistance and erosion resistance, long service life, high safety coefficient and the like.

Description

technical field [0001] The invention relates to an Al-Al compound coated with titanium nitride to wrap mullite 2 o 3 The sliding brick and its production method belong to the technical field of functional refractory materials. Background technique [0002] my country has huge reserves of low- and medium-grade bauxite, accounting for about 60% of bauxite resources. The efficient and comprehensive utilization of low- and medium-grade bauxite resources is an important way to achieve sustainable green development of the refractory industry. Mullite is prepared by electric melting method using medium and low grade bauxite, and the formed electric fused mullite forms its inherent needle-like structure. Mullite is Al 2 o 3 -SiO 2 The only stable binary compound in the system, its melting point is 1890±90°C. It has high refractoriness, good thermal shock resistance, high softening temperature under load, creep resistance, good volume stability at high temperature, chemical corr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/103C04B35/622C04B35/628C04B35/626
CPCC04B35/103C04B35/62204C04B35/62836C04B35/62605C04B2235/3217C04B2235/3463C04B2235/402C04B2235/5427C04B2235/5436C04B2235/3856C04B2235/3865C04B2235/3895C04B2235/77C04B2235/96Y02P40/60
Inventor 赵臣瑞岳茜李宏宇李勇牛智旺梁保青关斌斌尚俊利韩彦峰
Owner HENAN RONGJIN HIGH TEMPERATRUE MATERIALS CO LTD
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