一、前言 大水清金矿选矿厂从1979年投产至1982年10月一直使用单一浮选工艺流程,虽然在投产初期获得较好生产指标但由于采矿向下部不断延伸,入选原矿性质有所变化,使得生产指标逐年下降,金属流失不断加大。其主要原因是现场生产工艺流程不够完善,与入选矿石性质不相适应。 从国内外黄金选矿发展来看,采用单一浮选工艺流程,很难获得较好回收指标,尤其是对选别嵌布粒度粗、中、细不等和比重差大的硫化矿中的金矿物的回收应采用联合工艺流程才能适应。 I. Preface The Dashiming gold ore dressing plant has been in operation from 1979 to October 1982 and has been using a single flotation process. Although good production indicators have been obtained in the early stage of production, the nature of the selected ore changes due to the continuous extension of mining to the lower part , Making the production index declines year by year, the metal loss increases unceasingly. The main reason is the on-site production process is not perfect, not compatible with the nature of the selected ore. According to the development of gold beneficiation both at home and abroad, it is difficult to obtain better recovery indexes by adopting a single flotation process, especially for gold minerals in sulphide ores with coarse, medium, fine and large specific gravities Recycling should be used in conjunction with the process to adapt.