Neutral lining refractory material for electric induction furnace and manufacturing method thereof

A neutral furnace lining and refractory technology, which is used in the field of neutral furnace lining refractories for induction furnaces and its production, can solve the problems of low bulk density, poor corrosion resistance, poor uniformity, etc., and achieves high bulk density and shock resistance. The effect of good heat excitation and high uniformity

Inactive Publication Date: 2014-11-05
安徽中建材开源新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this invention can not be widely used, the corrosion resistance of this invention is poor, and particle size segregation is easy to occur when building a furnace for sintering, the bulk density is small, and the uniformity is poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A neutral lining refractory material for an induction electric furnace, comprising the following raw materials in percentage by weight: 55% high alumina bauxite clinker, 30% high-purity quartz sand, 3% alumina, and 12% binder; the high alumina bauxite The percentage content of each chemical composition of soil clinker is: 85% of aluminum oxide, 0.8% of iron oxide, 0.2% of potassium oxide, 7% of silicon oxide, and 7% of magnesium oxide.

[0025] The preparation method of the neutral lining refractory material for the induction electric furnace comprises the following sequential steps:

[0026] (1) carry out weighing each raw material by described weight percentage: high-alumina bauxite clinker high-purity quartz sand, alumina, binding agent;

[0027] (2) High-alumina bauxite clinker and high-purity quartz sand are broken respectively;

[0028] (3) Pass the broken high alumina bauxite clinker through a vibrating sieve, and by weight percentage, the high alumina bauxite c...

Embodiment 2

[0036] A neutral lining refractory material for an induction electric furnace, comprising the following raw materials in weight percentage: 60% of high alumina bauxite clinker, 24% of high-purity quartz sand, 1% of alumina, and 15% of binder; the high alumina bauxite The percentages of each chemical composition of the soil clinker are: 83% of aluminum oxide, 0.95% of iron oxide, 0.55% of potassium oxide, 8.5% of silicon oxide, and 7% of magnesium oxide; the high alumina bauxite clinker includes by weight percentage Bauxite clinker with the following particle sizes: 22% high-alumina clinker with a particle size of 1.5mm, 60% high-alumina clinker with a particle size of 4mm, and 18% high-alumina clinker with a particle size of 6.5mm .

[0037] The preparation method of the neutral lining refractory material for the induction electric furnace comprises the following sequential steps:

[0038] (1) carry out weighing each raw material by described weight percentage: high-alumina b...

Embodiment 3

[0044] A neutral lining refractory material for an induction electric furnace, comprising the following raw materials in weight percentage: 72% of high alumina bauxite clinker, 20% of high-purity quartz sand, 2% of alumina, and 6% of binder; the high alumina bauxite The percentages of each chemical composition of the soil clinker are: 85% of aluminum oxide, 1.2% of iron oxide, 0.2% of potassium oxide, 6.6% of silicon oxide, and 8% of magnesium oxide; the high alumina bauxite clinker includes High bauxite clinker with the following particle size: 15% high bauxite clinker with a particle size of 0.5mm, 70% high bauxite clinker with a particle size of 3.5mm, and 15% high bauxite clinker with a particle size of 6mm.

[0045] The preparation method of the neutral lining refractory material for the induction electric furnace comprises the following sequential steps:

[0046] (1) each raw material is weighed according to the weight percentage: high alumina bauxite clinker, high-purit...

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Abstract

The invention discloses a neutral lining refractory material for an electric induction furnace and a manufacturing method thereof, which belongs to the technical field of linings of electric induction furnaces. The neutral lining refractory material for the electric induction furnace comprises the following raw materials by weight: 50 to 75% of high bauxite clinker, 20 to 30% of high purity quartz sand, 1 to 3% of alumina and 5 to 15% of an adhesive. The weight percentages of high bauxite clinker with different particle sizes are as follows: high bauxite clinker with a particle size of 0 to 3 mm, 15 to 25%; high bauxite clinker with a particle size of more than 3 mm and no more than 5 mm, 40 to 70%; and high bauxite clinker with a particle size of 6 to 8 mm, 15 to 25%. According to then invention, through usage of the high bauxite clinker as aggregate, reasonable proportion of the high bauxite clinker with different particle sizes and cooperative usage of high purity quartz sand and a small amount of alumina, the neutral lining refractory material has good compactness and a prepared lining has small porosity, great volume density, high uniformity, good sinterability and good resistance to chilling and intense heating.

Description

technical field [0001] The invention relates to the technical field of induction electric furnace lining, in particular to a neutral lining refractory material for induction electric furnace and a manufacturing method thereof. Background technique [0002] Lining refractories for induction furnaces will affect the metallurgical quality (inclusions) and production costs (lining life) of molten steel or molten iron during the smelting process. Sufficient attention should be paid and relevant lining refractories should be selected. There are many varieties of lining refractories for induction furnaces, which can be divided into acidic (quartz sand), alkaline (magnesia) and neutral (alumina) linings according to their properties, and cryolite-based refractory linings that are both alkaline and neutral. When selecting refractory materials, the chemical composition and quality requirements of the steel or iron to be smelted should be mainly considered, and the production cost shou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 汪德发
Owner 安徽中建材开源新材料科技有限公司
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