- 期刊
Influence of Calcination Temperature on Leaching Rate of Aluminum and Iron Impurities in Oil Shale Ash
並列摘要
This work adopted 1, 10-phenanthroline spectrophotometric method, complexo-metric titration and X-ray diffractometer (XRD) to investigate active state of aluminum and iron impurities in semicoke of Huadian oil shale which was calcinated at different temperatures and the influence of calcination temperature on leaching rate of impurities (Al, Fe) with acid. The results show that after calcination of semicoke of Huadian oil shale at 700-800℃, iron and aluminium exist in their maximum active state and turn into materials soluble in acids, which results in their maximum leaching rate. This process is important for the removal of impurities at preparation of high-quality amorphous silica from oil shale ash.
並列關鍵字
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