论文部分内容阅读
日本国内钨的年产量约1100吨(按WO_365％换算),但对国内的需要量5500吨来说,只占20%,80％须靠进口。钟打公司钨的年产量是440吨(按WO_3 65%计),则占日本钨产量的40%。钟打矿山从1951年10月投产以来,采用了重选、磁选、浮选以及电选等选矿方法,进行了多年的试验,选矿过程有许多演变;目前则系采用重选-浮选-磁选的联合流程,每月处理矿石4600吨,回收白钨矿、黑钨矿、铜、
Domestic tungsten production in Japan is about 1,100 tons (converted to WO_365%), but only about 20% for domestic demand of 5,500 tons. 80% of the tungsten needs to be imported. Bell’s annual tungsten production is 440 tonnes (65% WO_3), accounting for 40% of Japan’s tungsten output. Zhongzha mines have been used for many years since their commissioning in October 1951, including re-election, magnetic separation, flotation and electrowinning. The process of mineral processing has evolved a lot. At present, the selection and flotation- Magnetic separation of the joint process, handling 4600 tons of ore per month, recycling scheelite, wolframite, copper,