Semi-light Guimo brick for ferrosilicon ladle and preparation method thereof

A semi-lightweight, ferrosilicon-clad technology, applied in the field of refractory materials, can solve the problems of high thermal conductivity and poor thermal insulation performance, and achieve the effects of low thermal conductivity, excellent thermal shock resistance and reasonable microporous structure

Inactive Publication Date: 2018-02-16
孝义市和中兴矿产有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art, to provide a semi-light silicon molybdenum brick for ferrosilicon and its preparation method, and to solve the problems of high thermal conductivity and poor thermal insulation performance of the existing high-alumina brick for ferrosilicon. technical issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A semi-light silica brick for ferrosilicon cladding in this embodiment is prepared from the following raw materials in parts by weight: 60 parts of high alumina bauxite clinker, 2 parts of high alumina bauxite raw meal, fine andalusite 3 parts of powder, 4 parts of silicon carbide fine powder, 2 parts of Suzhou soil, 3 parts of alumina hollow spheres, 1 part of silicon micropowder, and 3.5 parts of silica sol.

[0020] A preparation method for ferrosilicon clad semi-light silica brick, comprising the following steps:

[0021] 1) Grinding and crushing: adding 40% by weight of 60 parts of high alumina bauxite clinker and 2 parts by weight of high alumina bauxite raw material into a grinder and grinding until the particle size is less than 0.088mm, and after the grinding is completed, it is prepared Powder: crushing 60% of the high-alumina bauxite clinker in parts by weight of 60 parts to a particle size of 1-3 mm to obtain aggregate particles;

[0022] 2) Mixing and mill...

Embodiment 2

[0029] A semi-lightweight silica brick for ferrosilicon cladding in this embodiment is prepared from the following raw materials in parts by weight: 80 parts of high alumina bauxite clinker, 5 parts of high alumina bauxite raw meal, fine andalusite 8 parts of powder, 7 parts of silicon carbide fine powder, 6 parts of Suzhou soil, 10 parts of alumina hollow spheres, 3 parts of silicon micropowder, and 6 parts of silica sol.

[0030] A preparation method for ferrosilicon clad semi-light silica brick, comprising the following steps:

[0031] 1) Grinding and crushing: adding 40% of the high-alumina bauxite clinker with a weight part of 80 parts and high-alumina bauxite raw material with a weight part of 5 parts into a grinder to grind until the particle size is less than 0.088mm, and after the grinding is completed, it is prepared Powder: crushing 60% of 80 parts by weight of high alumina bauxite clinker to a particle size of 1 to 3 mm to obtain aggregate particles;

[0032] 2) M...

Embodiment 3

[0039] A semi-light silica brick for ferrosilicon cladding in this embodiment is prepared from the following raw materials in parts by weight: 70 parts of high alumina bauxite clinker, 4 parts of high alumina bauxite raw meal, fine andalusite 5 parts of powder, 6 parts of silicon carbide fine powder, 5 parts of Suzhou soil, 7 parts of alumina hollow spheres, 2 parts of silicon micropowder, and 5 parts of silica sol.

[0040] A preparation method for ferrosilicon clad semi-light silica brick, comprising the following steps:

[0041]1) Grinding and crushing: add 40% of the high-alumina bauxite clinker with a weight part of 70 parts, and a high-alumina bauxite raw material with a weight part of 4 parts into a grinder and grind until the particle size is less than 0.088mm. After the grinding is completed, it is prepared Powder: crushing 60% of the high-alumina bauxite clinker in parts by weight of 70 parts to a particle size of 1-3mm to obtain aggregate particles;

[0042] 2) Mix...

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PUM

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Abstract

The invention belongs to the technical field of refractory materials, and particularly relates to a semi-light Guimo brick for a ferrosilicon ladle and a preparation method thereof, and mainly solvesthe technical problems that the conventional high-aluminum brick for the ferrosilicon ladle has a relatively high heat conductivity coefficient and poor insulation performance. The semi-light Guimo brick for the ferrosilicon ladle is characterized by being prepared from the following raw materials in parts by weight: 60-80 parts of high-aluminum bauxite clinker, 2-5 parts of a raw high-aluminum bauxite material, 3-8 parts of fine andalusite powder, 4-7 parts of fine silicon carbide powder, 2-6 parts of Suzhou soil, 3-10 parts of hollow aluminum oxide spheres, 1-3 parts of silica micropowder and 3.5-6 parts of silica sol. The preparation method of the semi-light Guimo brick for the ferrosilicon ladle comprises the following steps: 1), grinding and crushing; 2), performing mixed grinding onthe raw materials; 3), moulding and preparing a blank; 4), drying; 5), firing at high temperature; 6), cooling to obtain a finished product. The semi-light Guimo brick for the ferrosilicon ladle has the advantages of low cost, excellent heat shock-resisting stability, a low heat conductivity coefficient, high heat efficiency and the like.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, in particular to a semi-light silicon molybdenum brick coated with ferrosilicon and a preparation method thereof. Background technique [0002] With the rapid development of my country's ferroalloy industry, submerged arc furnaces for ferroalloy production have made great progress in large-scale and intelligent in recent years. However, the ferrosilicon cladding working layer material used for ferrosilicon alloy tapping is generally made of high alumina bricks, which have a general ability to resist acid slag and liquid ferroalloy erosion; high thermal conductivity and poor thermal insulation performance, which will cause heat loss during the operation of the ferrosilicon cladding Larger; insufficient thermal shock resistance performance, resulting in heavy abnormal damage during use. There is a huge room for improvement in the material of the ferrosilicon-clad working layer. Cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/101
CPCC04B35/101C04B2235/3418C04B2235/3463C04B2235/3826C04B2235/428C04B2235/528C04B2235/5427C04B2235/5436C04B2235/602C04B2235/606C04B2235/656C04B2235/6567C04B2235/9676
Inventor 闫承华闫祖宁曹宏光闫业玉刘丽君李海君闫祖渊
Owner 孝义市和中兴矿产有限公司
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