Optimization of Acid Treatment ProcessfromDesilication Process

来源 :The 6th International Conference on Hydrometallurgy(第六届国际湿法冶 | 被引量 : 0次 | 上传用户：jingheli

【摘要】

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【作者】

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Jianbo Zhang Huiquan Li Shaopeng Li

【机构】

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Key Laboratory Green Process and Engineering,National Engineering Laboratory for Hydrometallurgical

【出处】

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The 6th International Conference on Hydrometallurgy(第六届国际湿法冶

【发表日期】

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2014年5期

【关键词】

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Optimization HAFA Desilication Filtration Unstable

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　　High-alumina fly ash (HAFA) is a waste produced by coal-fired power plant.The main phase of HAFA includes mullite, amorphousSiO2 and c-A12O3.Traditionaly, AmorphousSiO2can be partly removedby NaOHinpredesilicationprocess, while thezeolite phaseis formed on the partical surface spontaneously and preventsremovement of amorphousSiO2.Therefore, a new technology was developed to remove zeolite phase and impurities by acid treatment process, and further prepare mullite by deep desilication process.This new technology has been industrialized by a 3000 ton device.

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Optimization of Acid Treatment ProcessfromDesilication Process

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