primary float feed是什么意思

用法例句

The secondary flotation process was adopted for solved the high ash content in cleaned coal through influence factors analysis.

针对淮南矿业集团选煤厂精煤灰分一直较高的问题,通过对影响灰分的几个原因的分析,决定试用二次浮选工艺,由效益分析得出,二次浮选工艺能较好的解决本厂面临的问题。