我国钨选厂一般采用干式强磁选分离高锡钨精矿中的黑钨与锡石。因其粒度较细,致使处理量小,粉尘损失大,指标不高。 我矿亦用干式强磁选处理高锡钨(粒度-0.025毫米),处理量约150(公斤/时)。得到的锡精矿含锡的～50％,含WO_38～14％(最高达21％),钨精矿品位50～61％WO_3,含2～4％锡(最高达12％)。 China’s tungsten processing plants generally use dry magnetic separation of high-tungsten tungsten concentrate and cassiterite. Because of its smaller size, resulting in a small amount of processing, dust loss, the index is not high. I mine also used dry magnetic separation of high-tin tungsten (grain size -0.025 mm), handling capacity of about 150 (kg / h). The obtained tin concentrate contains ~ 50% tin, contains WO_38 ~ 14% (up to 21%), tungsten concentrate grade is 50 ~ 61% WO_3 and contains 2 ~ 4% tin (up to 12%).