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Geevor 锡矿业公司购置了一台巴特莱斯公司制造的 MarkⅡBM 型分选机样机。该样机在康沃尔郡 Geevor 选矿厂的矿泥作业连续运转12个月,效果很好。在此期间,证实了新设计的可靠性。以前的设计世界各国都用以预选负100微米粒级范围细粒高比重
Geevor Tin Mines bought a Mark II MB model machine manufactured by Bartlett. The prototype worked fine for 12 months at the mine operations at the Geevor concentrator, Cornwall. During this period, the reliability of the new design was confirmed. Previous design countries in the world are used to pre-select the fine particle size range of negative 100 micron proportion