近十多年来,在国外铁矿石选矿中,自磨技术已在磨矿作业中广泛应用。据现有资料统计,国外铁选矿厂在工业中应用的自磨机和半自磨机已有128台(表1)。在六十年代末期,自磨机已向大型化发展,采用自磨技术的选厂也日益增多。如加拿大、美国、南非、瑞典、法国等新设计的大型选厂中,广泛地采用了自磨机。苏联也在铁矿石选矿作业中开始应用。1965～1968年间,国外(不包括苏联及东欧)新建9个大型铁矿选厂,其中只 In the recent ten years, in foreign iron ore beneficiation, self-grinding technology has been widely used in grinding operations. According to the available statistics, there are 128 self-mill and semi-autogenous mill used in foreign iron ore processing plants in industry (Table 1). In the late 1960s, since the mill has been large-scale development, the selection of plants using self-grinding technology is also increasing. Such as Canada, the United States, South Africa, Sweden, France and other newly designed large-scale plant, widely used self-mill. The Soviet Union is also beginning to apply iron ore beneficiation operations. From 1965 to 1968, nine large-scale iron ore mills were set up in foreign countries (excluding the Soviet Union and Eastern Europe), of which only