细粒锡石浮选是一项新工艺,它是提高细粒锡石回收率的重要途径之一。我厂在昆明冶金研究所的帮助下,曾对细粒锡石浮选进行过大量的研究工作,取得了一定的成效,并在一九六六年底将这项新技术运用于生产实践。几年来,并对细粒锡石浮选进一步试验、测定和生产考察,使之不断完善。锡的浮选回收率达到86.31％, Fine-grained cassiterite flotation is a new technology, which is one of the important ways to improve the recovery rate of fine cassiterite. With the help of Kunming Institute of Metallurgy, I have conducted a great deal of research work on the flotation of fine-grained cassiterites and achieved certain results. At the end of 1966, I applied the new technology to production practices. In recent years, and flotation of fine-grained cassiterite further testing, measurement and production inspection, so that continuous improvement. Tin flotation recovery rate reached 86.31%