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1. 发明授权

US5334364A Process for purifying silica sand 失效
标题翻译：二氧化硅砂的净化工艺
公开(公告)号：US5334364A
公开(公告)日：1994-08-02
申请号：US38169
申请日：1993-03-26
申请人： Juan-Lauro Aguirre-Villafana , Juan Leal-Gonzales
发明人： Juan-Lauro Aguirre-Villafana , Juan Leal-Gonzales
IPC分类号： C03C1/02 , C01B33/12
CPC分类号： C03C1/022
摘要： A process for the elimination of iron from silica sand, comprising: abrasive-attritioning sand particles by subjecting the sand particles, in a single step and under dry conditions, to centrifugal rotation and simultaneously imparting an agitation with a translative eccentric movement and downstream and upstream movements causing that substantially all the sand particles be abrasive attritioned to each other wearing their surfaces to remove impurities covering said sand particles; and separating said iron impurities from said sand particles by magnetic separation, flotation or other known methods, thus simplifying the conventional processes just to one attrition step and suppressing the chemical treatment with acids or alkalis which was necessary in conventional processes.
摘要翻译：一种从硅砂中去除铁的方法，包括：通过在单一步骤和在干燥条件下对砂粒进行离心旋转并同时使平移偏心运动和下游和上游的搅拌同时进行研磨砂磨颗粒运动导致基本上所有的砂粒磨损磨损其表面以除去覆盖所述砂粒的杂质; 并通过磁选，浮选或其他已知方法从所述砂粒分离所述铁杂质，从而简化了常规方法仅仅是一次磨耗步骤，并抑制了用常规方法所必需的酸或碱的化学处理。

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