公开(公告)号：US4436616A

公开(公告)日：1984-03-13

申请号：US363652

申请日：1982-03-30

申请人： Philippe Dufour ,  Jean-Jacques Predali ,  Guy Ranchin, deceased ,  by Marc Ranchin, legal heir ,  by Genevieve Ranchin, legal heir

发明人： Philippe Dufour ,  Jean-Jacques Predali ,  Guy Ranchin, deceased ,  by Marc Ranchin, legal heir ,  by Genevieve Ranchin, legal heir

IPC分类号： B03B9/00 ,  B03D1/02 ,  B03D1/06

CPC分类号： B03D1/021 ,  B03B9/00 ,  B03D1/06

摘要： This invention provides a process for the beneficiation of phosphate ores having a magnesia-rich carbonate-containing gangue and a silica-containing gangue, which process comprises subjecting the phosphate ore particles to controlled attrition to remove at least a portion of the magnesia-rich carbonate-containing gangue; and subjecting the phosphate ore resulting from attrition to a plurality of flotations to remove the remaining magnesia-rich carbonate-containing gangue and the silica-containing gangue and to recover a concentrated phosphate product, the flotations including sequentially a phosphate flotation, a silica flotation and a carbonate flotation. Alternatively, the controlled attrition can be employed after the silica flotation and prior to the carbonate flotation.

摘要翻译： 本发明提供了一种用于选择具有富含氧化镁的含碳酸盐的脉石和含二氧化硅的脉石的磷酸盐矿石的方法，该方法包括使磷酸盐矿石颗粒受控磨耗以除去至少一部分富含氧化镁的碳酸盐 含g石; 将由磨耗产生的磷酸盐矿石进行多次浮选，以除去剩余的富含氧化镁的含碳酸盐的g石和含二氧化硅的脉石，并回收浓缩的磷酸盐产物，浮选依次包括磷酸盐浮选，二氧化硅浮选和 碳酸盐浮选。 或者，可以在二氧化硅浮选之后和碳酸盐浮选之前使用受控磨耗。