湘潭充填工业泵工业充填泵在国外充填法采矿技术应用较广。20世纪80年代初，加拿大金属矿山地下开采矿山中，用充填法的比重为35％～40％；澳大利亚的地下有色金属矿山多用充填法开采；瑞典的布利登有色金属公司70％的矿山是用充填法开采的；苏联1981年地下有色金属矿山充填法的比重为24．2％，1970年克里沃罗格铁矿区用充填法开采铁矿仅占地下采出铁矿石的0．8％，到1980年已达6.4％。日本金属矿山使用充填法的比重亦是逐年上升的：1956年为24.5％，1967年35.2％，1970年为39％，1982年为43％。   1．加拿大充填采矿技术的发展   加拿大地下矿山充填技术从20世纪30年代开始，普遍采用冲击砂作为充填料，到40年代末广泛采用选厂冲积尾砂进行充填。50年代中期到末期，用尾砂胶结充填浇面作为扒矿底板，采用分层水砂充填代替劳动强度大且灵活性差的方框支架采矿法。1985～1991年，加拿大在充填材料、充填工艺方面的研究取得了很大的成就。加拿大矿山相继采用块石胶结充填、高浓度管道输送充填、膏体充填等，不仅提高了矿山的综合生产能力，降低了充填成本，而且改善了井下的生产环境。Xiangtan filling industrial pump is widely used in foreign filling mining technology. In the early 1980s, the proportion of filling method used in underground mining of Canadian metal mines was 35% to 40%; Underground non-ferrous metal mines in Australia are often mined using the filling method; 70% of the mines of Sweden's Bryden Nonferrous Metals Company are mined using backfill method; In 1981, the proportion of filling method in underground non-ferrous metal mines in the Soviet Union was 24.2%. In 1970, filling method only accounted for 0.8% of the underground iron ore extracted in the Krivolog iron mine area, and by 1980, it had reached 6.4%. The proportion of filling method used in Japanese metal mines has also been increasing year by year: 24.5% in 1956, 35.2% in 1967, 39% in 1970, and 43% in 1982. 1. Development of backfill mining technology in Canada Underground mine backfill technology in Canada began in the 1930s, commonly using impact sand as backfill material, and by the late 1940s, widely using tailings from beneficiation plants for backfill. In the mid-1950s to the late 1950s, tailings cemented filling and pouring were used as the bottom plate for ore mining, and layered water sand filling was adopted instead of the labor-intensive and inflexible box support mining method. From 1985 to 1991, Canada made great achievements in the research of filling materials and filling processes. Canadian mines have successively adopted block stone cemented filling, high concentration pipeline transportation filling, paste filling, etc., which not only improves the comprehensive production capacity of mines, reduces filling costs, but also improves the production environment underground.