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Anhydrous stemming based on waste utilization and preparation method of anhydrous stemming based on waste utilization

A technology of anhydrous taphole mud and waste materials, applied in the field of refractory materials, can solve the problems of high cost, achieve low cost, stable quality, and reduce the generation of toxic gases

Inactive Publication Date: 2016-08-31
ZHENGZHOU SAIWO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The quality control of anhydrous taphole clay is mainly reflected in the quality of raw materials and the control of the production process. If high-quality raw materials are selected, the performance of anhydrous taphole clay will be improved, but the cost will also be high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take a steel factory 1080m 3 Taking the blast furnace as an example, the raw material ratio is as follows:

[0021] 30% brown corundum, 12% aluminum carbonaceous waste brick pellets, 5% aluminum carbonaceous waste brick powder, 15% silicon carbide, 6% coke, 10% ferrosilicon nitride, aluminum alum with alumina content ≥ 80% 8% of soil, 6% of clay, 3% of kyanite, 5% of high-temperature asphalt, plus binder accounts for 15% of the total mass of the above ingredients.

[0022] The particle size of the brown corundum is >0.088mm and ≤3mm.

[0023] The aluminum-carbon waste granules contain 40-80% alumina, 5-20% silicon dioxide and 3-20% carbon. The particle size of the aluminum-carbon waste granules is 1-3mm.

[0024] The aluminum-carbon waste material powder contains 40-80% alumina, 5-20% silicon dioxide and 3-20% carbon. The particle size of the aluminum-carbon waste powder is ≤0.075mm.

[0025] The particle size of the silicon carbide is ≥0.088mm and <1mm.

[0026] ...

Embodiment 2

[0031] Take a steel factory 750m 3 Taking the blast furnace as an example, the raw material ratio is as follows:

[0032] 15% bauxite with alumina content ≥ 80%, 20% aluminum carbonaceous waste brick particles, 8% aluminum carbonaceous waste brick powder, 15% silicon carbide, 10% coke, 8% ferrosilicon nitride, brown 8% of corundum, 7% of clay, 4% of kyanite, 5% of high-temperature asphalt, plus binder accounts for 20% of the total mass of the above ingredients.

[0033] The particle size of the bauxite is >0.088mm and ≤3mm.

[0034] The aluminum-carbon waste granules contain 40-80% alumina, 5-20% silicon dioxide and 3-20% carbon. The particle size of the aluminum-carbon waste granules is 1-3mm.

[0035] The aluminum-carbon waste material powder contains 40-80% alumina, 5-20% silicon dioxide and 3-20% carbon. The particle size of the aluminum-carbon waste powder is ≤0.075mm.

[0036] The particle size of the brown corundum is ≤0.075mm.

[0037] The softening point of the ...

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Abstract

The invention provides anhydrous stemming based on waste utilization and a preparation method of the anhydrous stemming based on waste utilization. The anhydrous stemming comprises, by mass, 10-30% of aluminiferous aggregate, 5-25% of alumina-carbon granular wastes, 3-8% of alumina-carbon powdery wastes, 10-25% of silicon carbide, 2-10% of coke, 5-18% of ferro-silicon nitride, 5-15% of fine aluminiferous powder, 3-15% of clay, 2-8% of kyanite, 2-5% of high-temperature pitch and 10-25% of binding agent. The anhydrous stemming based on waste utilization, prepared from the alumina-carbon granular wastes and the alumina-carbon powdery wastes substituting for part of the raw materials, has the advantages of low cost, high quality, good plasticity, easiness in trepanning and resistance to washing and erosion.

Description

technical field [0001] The invention relates to the technical field of refractory materials, in particular to an anhydrous taphole clay based on waste material utilization and a preparation method thereof. Background technique [0002] Blast furnace ironmaking is currently the most important ironmaking method in the world, and blast furnace clay is a refractory material used to seal the taphole. The composition of blast clay can be divided into two parts: refractory aggregate and binder. Refractory aggregate refers to materials such as corundum, mullite, coke and mica. The quality control of anhydrous taphole clay is mainly reflected in the quality of raw materials and the control of the production process. If high-quality raw materials are selected, the performance of anhydrous taphole clay will be improved, but the cost will also be high. Therefore, under the premise of not changing the performance of the clay, it has become an urgent problem for the clay manufacturers t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B26/26C04B24/30C04B18/04
CPCY02W30/91C04B35/66C04B18/0427C04B24/302C04B26/26
Inventor 李星燃吕雪艳付武斌陈要学
Owner ZHENGZHOU SAIWO TECH CO LTD
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