primary screening operation是什么意思

网络释义

用法例句

Through researching Wolfram grab picking's conditions and unceasingly ameliorated Wolfram grab picking's working conditions,Shizhuyuan 200t/d concentrating mill not only has improved wolfram grab picking's concentration grade in a certain extent,but also has improved general Wolfram recovery rate from 57.

柿竹园200 t/d选厂通过对钨粗选条件的试验探索,对钨粗选作业条件的不断改善,不但使钨粗精矿品位有了一定的提高,还使总钨回收率由2003年的57。

In the light of this problem, adopting advanced technology and advanced equipment, the technology transformation of primary separation was finished.

通过增加一次精选,选用高效浮选机等,对三十亩地选矿厂的粗选工艺流程进行了有效的改造,改造后的流程能更好地适应钼矿石性质和粗选富集比大的特点,粗选回收率较改造前有了较大程度的提高。