落雪矿选厂处理的部份矿石属难选矿石,由于含泥高,使浮选药剂耗量大,选择性差,以至影响浮选指标的提高。过去曾从工艺上或浮选药剂上进行了研究,取得了一些进展,如使用乙二胺磷酸盐后,浮选指标有很大的改善,但精矿品位仍然不高,特别是对含泥量大的矿石,精矿品位一般都在20％以下。针对精矿品位低这一问题,我们于 Due to the high clay content, some minerals handled by the falling snow ore processing plant are difficult to process and cause large consumption of flotation reagents and poor selectivity, thus affecting the improvement of the flotation index. In the past, there have been some researches on the technology or flotation reagents. For example, the use of ethylenediamine phosphate has greatly improved the flotation index, but the concentrate grade is still not high, especially for mud with mud Large amount of ore, concentrate grade are generally below 20%. We concentrate on the problem of low grade of concentrate