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Recovery and utilization method of electric fused zirconia alumina grinding waste material

A technology for grinding waste and fused zirconium, applied in the field of refractory materials, can solve the problems of further improvement of performance, expansion of zirconium raw material sources, waste of zirconium resources, etc., and achieves the effects of low cost, low sintering shrinkage and efficient recovery

Active Publication Date: 2017-06-23
ZHENGZHOU XINGUANGSE REFRACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, products such as fused zirconia corundum bricks have to be ground and finely processed by a mill, and the processed powder flows into the sewage pipe with the cooling liquid, which not only causes environmental pollution, but also causes waste of precious and scarce zirconium resources. , if the recovery and reuse of zirconium resources in fused zirconia corundum grinding materials can be realized, it will help to expand the source of zirconium raw materials
CN101723695A discloses a method for producing fused zirconia corundum ramming material by using grinding waste, which uses the waste liquid containing powder produced after grinding by the mill to process the powder obtained by precipitation, filtration and drying with high alumina cement and white The mud is added to the mixer and fully mixed to obtain fused zirconia corundum ramming material, but the performance of this process method uses high alumina cement as a binder and needs to be further improved

Method used

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  • Recovery and utilization method of electric fused zirconia alumina grinding waste material
  • Recovery and utilization method of electric fused zirconia alumina grinding waste material
  • Recovery and utilization method of electric fused zirconia alumina grinding waste material

Examples

Experimental program
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Embodiment 1

[0015] The method for recycling fused zirconium corundum grinding waste in this embodiment includes the following steps: ① The waste coolant containing fused zirconium corundum powder produced after grinding by the fused AZS-33 zirconium corundum brick grinder is drained to The sediment is placed in the recovery tank to collect the wet sludge settled on the bottom of the tank. ②The collected wet powder sludge is naturally dried and crushed, then dried with hot air and collected to obtain recycled powder. The recycled powder contains 33.2wt% ZrO 2 , 51.6wt% Al 2 O 3 , 14.8wt% SiO 2 , 0.2wt% Fe 2 O 3 , The balance is other impurities, and the particle size is less than 50μm. ③ Based on 100 parts by weight of the recycled powder, take 8.0 parts by weight of phosphoric acid (85%), 1.2 parts by weight of citric acid, and 0.3 parts by weight of iminodiacetic acid, mix them with the recycled powder, and then manually mash them. The ramming material can be obtained by beating or rammin...

Embodiment 2

[0017] The method for recycling fused zirconium corundum grinding waste in this embodiment includes the following steps: ① The waste coolant containing fused zirconium corundum powder produced after grinding by the fused AZS-33 zirconium corundum brick grinder is drained to The sediment is placed in the recovery tank to collect the wet sludge settled on the bottom of the tank. ②The collected wet powder sludge is naturally dried and crushed, then dried with hot air and collected to obtain recycled powder. The recycled powder contains 33.2wt% ZrO 2 , 51.6wt% Al 2 O 3 , 14.8wt% SiO 2 , 0.2wt% Fe 2 O 3 , The balance is other impurities, and the particle size is less than 50μm. ③ Based on 100 parts by weight of recycled powder, take 8.0 parts by weight of phosphoric acid (85%), 1.3 parts by weight of hydroxyacetic acid, and 0.2 parts by weight of iminodiacetic acid, mix them with the recycled powder, and then perform manual ramming. The ramming material can be obtained by beating or...

Embodiment 3

[0019] The method for recycling fused zirconium corundum grinding waste of this embodiment includes the following steps: ① The waste coolant containing fused zirconium corundum powder produced after grinding by the fused AZS-33 zirconium corundum brick grinder is drained to The sediment is placed in the recovery tank to collect the wet sludge settled on the bottom of the tank. ②The collected wet powder sludge is naturally dried and crushed, then dried with hot air and collected to obtain recycled powder. The recycled powder contains 33.2wt% ZrO 2 , 51.6wt% Al 2 O 3 , 14.8wt% SiO 2 , 0.2wt% Fe 2 O 3 , The balance is other impurities, and the particle size is less than 50μm. ③Based on 100 parts by weight of recycled powder, take 8.7 parts by weight of aluminum dihydrogen phosphate (60%), 1.2 parts by weight of malic acid, and 0.3 parts by weight of DL-2-aminosuccinic acid to combine them with the recycled powder. Mix together and then perform manual ramming or pneumatic hammer ra...

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Abstract

The invention relates to a recovery and utilization method of an electric fused zirconia alumina grinding waste material, and belongs to the technical field of a refractory material. The recovery and utilization method provided by the invention is characterized in that a recovery powder material obtained through precipitating and drying powder-containing waste liquid produced through grinding an electric fused zirconia alumina product is uniformly mixed with phosphoric acid or phosphate bonding agents, hydroxycarboxylic acid and aminocarboxylic acid. The recovery and utilization method provided by the invention has the advantages that the grinding waste material of the electric fused zirconia alumina product is used as raw materials; the efficient recovery of zirconium resources is realized; the prepared ramming materials have low cost, stable performance, high sintering intensity and low sintering shrinkage rate, and can be used for zirconia alumina refractory brick caulked joint positions of glass kiln furnaces.

Description

Technical field [0001] The present invention relates to the technical field of refractory materials. More specifically, the present invention relates to a method for recycling fused zirconium corundum grinding waste. Background technique [0002] Ramming material is a semi-wet refractory mixture constructed from a mixture of granular materials, binders and additives by tamping method. Ramming material is a low-plasticity or non-plasticity tamping material, which relies on forced tamping to form a dense body, which is then hardened by heating or baking to obtain a certain structural strength. Fused zirconium corundum is a high-grade refractory material made by smelting alumina and zirconia at high temperature in an electric arc furnace. In the prior art, products such as fused zirconia corundum bricks must be ground and finely processed by a mill. The processed powder flows into the sewage pipe with the coolant, which not only causes environmental pollution, but also leads to the...

Claims

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Application Information

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IPC IPC(8): C04B35/66
CPCC04B35/66
Inventor 宋林祥刘西法
Owner ZHENGZHOU XINGUANGSE REFRACTORY
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