Corundum-mullite funnelled brick

A funnel brick and mullite technology, applied in the field of refractory materials, can solve the problems of easy erosion, impurities entering molten steel, affecting the quality of castings, etc., and achieves good impact resistance, high bulk density, and good acid and alkali corrosion resistance. Effect

Inactive Publication Date: 2016-03-30
浙江长兴强立耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The funnel brick is a protective device connecting the ladle and the casting. It has the functions of protecting the molten steel from overflowing and reducing the possibility of oxida

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] The raw material composition of a corundum mullite funnel brick is as follows: 88 grade bauxite 20~50%, brown corundum 20~50%, clay powder 5~15%, volume stabilizer 1~3% and binder 3.5~4.5% %, of which the 5~3mm particles in the 88 grade bauxite are 15~25%; the 3~1mm particles in the brown corundum are 20~30%; the 1~0mm particles in the brown corundum are 20~30%; the total particles in the brown corundum 60~70%; the fine powder of brown corundum is 15~30%;

[0011] The preparation method is as follows: crushing: crushing the materials with larger particles among the above raw materials in a crusher; grading: grading the raw materials of various components; ingredients: forming the proportion and grading according to the above ratio ; Mixing and trapped material: after the treatment of mixing equipment, the billet with uniform distribution of particles in each component is made, and then the billet is trapped for 24 hours; forming: the billet is extruded by the extrusion ...

Embodiment 2

[0013] The raw material composition of a corundum mullite funnel brick is as follows: 88 grade bauxite 20~50%, brown corundum 20~50%, clay powder 5~15%, volume stabilizer 1~3% and binder 3.5~4.5% %, of which the 5~3mm particles in the 88 grade bauxite are 15~25%; the 3~1mm particles in the brown corundum are 20~30%; the 1~0mm particles in the brown corundum are 20~30%; the total particles in the brown corundum 60~70%; the fine powder of brown corundum is 15~30%;

[0014] The preparation method is as follows: crushing: crushing the materials with larger particles among the above raw materials in a crusher; grading: grading the raw materials of various components; ingredients: forming the proportion and grading according to the above ratio ; Mixing and trapped material: after the treatment of mixing equipment, the billet with uniform distribution of particles in each component is made, and then the billet is trapped for 24 hours; forming: the billet is extruded by the extrusion ...

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PUM

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Abstract

The present invention relates to a corundum-mullite based funnelled brick. The funnelled brick comprises the following raw materials: 20-50% of 88-grade alumina, 20-50% of brown corundum, 5-15% of clay powder, 1-3% of a volume stabilizer and 3.5-4.5% of a binding agent, wherein 15-25% of 5-3 mm particles are contained in the 88-grade alumina; 20-30% of 3-1 mm particles are contained in the brown corundum; 20-30% of 1-0 mm particles are contained in the brown corundum; 60-70% of total particles and 15-30% of fine powder are contained in the brown corundum. The funnelled brick is high in using temperature, and good in abrasion resistance and impact resistance.

Description

technical field [0001] The invention relates to a refractory material, in particular to a corundum-mullite funnel brick. Background technique [0002] The funnel brick is a protective device connecting the ladle and the casting. It has the functions of protecting the molten steel from overflowing and reducing the possibility of oxidation. The quality of the funnel brick directly affects the quality of the casting. Being corroded, it is easy to cause impurities to enter the molten steel and affect the quality of the casting. Contents of the invention [0003] In order to solve the above technical problems, the object of the present invention is to provide a corundum-mullite funnel brick, which has high application temperature, corrosion resistance and long service life. [0004] In order to achieve the above object, the present invention adopts the following technical solutions: [0005] A corundum-mullite funnel brick, the raw material composition of the funnel brick is ...

Claims

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Application Information

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IPC IPC(8): C04B35/101
CPCC04B35/101C04B2235/349C04B2235/5427C04B2235/5463
Inventor 侯兆田胡竹生吴国强杨利强杨宗平吴建
Owner 浙江长兴强立耐火材料有限公司
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