几年来,冶金部各浮选剂工厂及各试验研究单位制了一批新浮选剂,其中有些已投入生产、部分正筹建生产车间或正推广试用。为促进推广试用工作的开展,使新品种更快地在“开发矿业”中作出贡献,特将有关情况简介如下表,供使用部门的同志参考。·本刊编辑组· Over the past few years, the Ministry of Metallurgical Flotation Flotation Factory and the pilot units of the system of a number of new flotation agents, some of which have been put into production, some are planning to build the workshop or is to promote the trial. In order to promote the promotion of pilot projects and make new varieties contribute more quickly to the development of mining industry, the relevant briefings are set out below for reference of comrades in the departments in charge. · Editorial editor ·