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我矿选矿厂有大量的 微细粒钨精矿,它主要来 源于离心选矿机、皮带溜 槽、弹簧摇床等。粉钨粒度 小于负200目以下的约占 总产量的4.4％,按年产2000吨钨精矿计算,每年约有90吨粉钨。干燥后的粉钨在混和装包过程中,有相当部分会被抽风机等带走。经测定,每混和20吨精矿,要损失约80公斤微粒精矿,以年产2000吨精矿的选厂计算,每年要损失30度粉钨8吨,折合品位为百出之六十五的钨精矿4吨,价值3.4万元。钨精矿交给火法治炼厂进行治
My mine concentrator has a large number of fine particles of tungsten concentrate, it is mainly derived from the centrifugal concentrator, belt chute, spring shaker. Tungsten powder particle size less than minus 200 mesh or less accounted for about 4.4% of the total output, according to annual output of 2,000 tons of tungsten concentrate calculation, about 90 tons of tungsten powder each year. After the dry powder tungsten mixed bagging process, a considerable portion will be taken away by the exhaust fan. It has been determined that for every 20 tons of concentrates mixed, about 80 kilograms of fine ore concentrate will be lost and the annual output of 2000 tons of concentrates will be calculated at the expense of losing 8 tons of 30 tons of tungsten powder annually, equivalent to a hundred and sixty five 4 tons of tungsten concentrate, worth 34,000 yuan. Tungsten concentrate to the fire rule refinery to rule