Light Metals 2012 pp 215-217 | Cite as
Extracting Alumina from Coal Fly Ash with Ammonium Sulfate Sintering Process
Chapter
Abstract
The whole process of extracting alumina from coal fly ash was trailed by experimentation. Alumina was prepared with sintering, leaching, separating, precipitation with ammonia water and calcination units. The effects of the sintering temperature and the sintering time, molar ratio of ammonium sulfate and alumina in fly ash and the size of fly ash on the extracting efficiency of alumina in fly ash were studied. The extracting efficiency of alumina can reach 95% under the optimum conditions.
Keywords
fly ash alumina sintering ammonium sulfatePreview
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© TMS (The Minerals, Metals & Materials Society) 2012