皮带溜槽的研究和试制工作开始于1961年4月。三年来,在锡业公司等有关单位的共同努力下,完成了试验研究、小批投入生产和设备定型工作。细粒锡石的分选是发展我国锡生产的关键之一。对此,国内做了许多工作,取得了显著效果。在生产中,古老的流膜选矿迄今仍为主要的分选手段,并出现一些新设备。特别值得提出的是,我国的流膜选矿 Belt chute research and trial work began in April 1961. In the past three years, with the joint efforts of tin companies and other relevant units, the pilot research, small batch production and equipment setting have been completed. The separation of fine-grained cassiterite is one of the keys to develop tin production in our country. In this regard, China has done a lot of work and achieved remarkable results. In production, ancient flow-film beneficiation is by far the primary means of separation and some new equipment appears. Particularly worth mentioning is that China’s fluid film beneficiation