Investigations were carried out on feed and products (concentrate, middling, tailing) from the "Kyoei Chemical Industries" processing plant to establish, at various size range, the degree of liberation of fluorite from the other gangue minerals (quartz, feldspars, ...) and determine the size range at which serious losses are occurring. The results of a careful microscopic counting of free minerals and various kind of mineral associations present in each fraction interpreted on the basis of the Gaudin's liberation model have been used to assess the efficiency of the beneficiation. It is suggested to reduce the cut off grain size in the classified ore from 0.5 mm to 0.3 mm in order to increase the selectivity of the flotation process.
抄録全体を表示