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Preparation method for reusing fused alumina zirconia reclaimed material

A technology of recycled materials and zirconium corundum, which is applied in the field of melting and casting refractory materials, can solve the problems of low recycling efficiency, reduced refractoriness and corrosion resistance of products, and achieve the effect of reducing pollution

Active Publication Date: 2021-12-17
RUITAI MATERIALS TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, zirconium corundum recycled materials contain a large amount of metal scraps (iron scraps, nickel scraps, copper scraps) and mechanical oil stains, which are difficult to separate, and the recovery efficiency is low. If untreated zirconium corundum recycled materials are directly used to prepare refractory materials, it will be greatly reduced. Reduce the refractoriness and corrosion resistance of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Preparation of raw powder: Dry the zirconium corundum recycled material at 130°C for a total of 2 hours, and vibrate the zirconium corundum recycled material every 2 hours, each vibration time is 5 minutes, and the dried zirconium corundum The corundum reclaimed material is ready for use after 0 times of iron removal.

[0015] Preparation of foaming slurry: 50wt% raw powder or 50wt% recycled powder, 20wt% water (additional), 5wt% foaming agent (additional), 10wt% aluminum sol (additional) for rapid stirring to prepare foaming slurry , the stirring speed is 1000rad / min, and the stirring time is 20min; the composition of the blowing agent is one or more combinations of primary alkyl sulfate or 2-normal alkylsulfonate or secondary alkyl sulfate, wherein The mass ratio of primary alkyl sulfate: 2-normal alkyl sulfate or secondary alkyl sulfate is 1:1.5.

[0016] Drying and firing of the foamed green body: Put the shaken foamed green body into the drying kiln, set the tempe...

Embodiment 2

[0020] Preparation of raw powder: Dry the zirconium corundum recycled material at 130°C for a total of 2 hours, and vibrate the zirconium corundum recycled material every 2 hours, each vibration time is 5 minutes, and the dried zirconium corundum The corundum reclaimed material is ready for use after 0 times of iron removal.

[0021] Preparation of foam slurry: 50wt% raw powder or 50wt% recycled powder, 30wt% water (additional), 5wt% foaming agent (additional), 10wt% aluminum sol (additional) for rapid stirring to prepare foaming slurry , the stirring speed is 1000rad / min, and the stirring time is 20min; the composition of the blowing agent is one or more combinations of primary alkyl sulfate or 2-normal alkylsulfonate or secondary alkyl sulfate, wherein The mass ratio of primary alkyl sulfate: 2-normal alkyl sulfate or secondary alkyl sulfate is 1:1.5.

[0022] Drying and firing of the foamed green body: Put the shaken foamed green body into the drying kiln, set the temperat...

Embodiment 3

[0026] Preparation of raw powder: Dry the zirconium corundum recycled material at 130°C for a total of 2 hours, and vibrate the zirconium corundum recycled material every 2 hours, each vibration time is 5 minutes, and the dried zirconium corundum The corundum reclaimed material is ready for use after 0 times of iron removal.

[0027] Preparation of foaming slurry: 50wt% raw powder or 50wt% recycled powder, 40wt% water (additional), 5wt% foaming agent (additional), 10wt% aluminum sol (additional) for rapid stirring to prepare foaming slurry , the stirring speed is 1000rad / min, and the stirring time is 20min; the composition of the blowing agent is one or more combinations of primary alkyl sulfate or 2-normal alkylsulfonate or secondary alkyl sulfate, wherein The mass ratio of primary alkyl sulfate: 2-normal alkyl sulfate or secondary alkyl sulfate is 1:1.5.

[0028] Drying and firing of the foamed green body: Put the shaken foamed green body into the drying kiln, set the tempe...

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Abstract

The invention relates to a preparation method for reusing a fused alumina zirconia reclaimed material. The invention aims to provide the preparation method for effectively separating metal scraps from the reclaimed material. The purpose of the invention is realized by the following method: 1, preparing raw powder; 2, preparing foaming slurry; 3, drying and sintering a foaming blank; 4, screening and secondarily crushing the foaming blank; and 5, recycling remaining base materials. By the adoption of the method, a large number of metal scraps existing in the fused alumina zirconia reclaimed material can be effectively removed, and the recycling rate of the reclaimed material is increased.

Description

technical field [0001] The invention relates to the field of melting and casting refractory materials, and is especially suitable for the recovery and reuse of a zirconium corundum reclaimed material. Background technique [0002] Zirconium corundum refractory material has good corrosion resistance to molten glass. At present, a large amount of zirconium corundum recycled materials will be produced in the process of processing zirconium corundum refractory materials. These recycled materials will not be recycled for reuse, but will be directly disposed of as waste. This has led to a serious waste of resources, and since the recycled zirconia corundum contains a large amount of zirconia, soda ash, and alumina, it needs professional harmless treatment before it can be discarded, which greatly increases the production cost of the enterprise. The zirconium corundum particles in the recycled zirconium corundum have good corrosion resistance to molten glass, and if they can be re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/10C04B35/622C04B35/626
CPCC04B35/66C04B35/10C04B35/62605C04B35/62204C04B2235/3244Y02P40/60
Inventor 魏瀚徐琳琳尹超男王俊涛胡建辉闫昕徐如林孙旭东
Owner RUITAI MATERIALS TECHNOLOGY CO LTD
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