摘要
选矿技术经济指标不过关是影响石门磷矿开发利用的重要原因之一。湖南化工研究院采用正－反浮选取得了明显的效果。该工艺药剂品种少、用量低、操作稳定，产品质量好，经济效益明显。
A positive-negative flotation process was used for magnesium-bearing phosphorous rock of Shimen Mine with better economical and technical indexes.The less variety and low usage of chemical agents, steady operation and good quality of the products are the main advantages of the process.
关键词
磷块岩
浮选
选矿
s:phosphorous rock flotation
