粗精矿是指选矿时将入选的矿物原料进行初步分选的作业，即粗选后得到的一类产物，一般还伴随有中矿、尾矿等。粗精矿尚不是合格产品，还需要继续进行分选。
金精矿可直接作为产品，钨粗精矿可返回现场流程作进一步的处理。
The gold concentrate can be used as products directly and Tungsten coarse concentrate should be sent to the on-site process for retreatment.
通过对选铁尾矿中回收铁精矿的工艺考查、分析，进行了粗精矿再磨工艺的试验。
The experimental study on the re-grinding of primary concentrate has been conducted through the investigation and analysis on the process to recover iron concentrate from tailings of ore dressing.
本文论述采用亚硫酸盐作抑制剂，对黑钨粗精矿精选枱浮钼、铜、铋硫化矿浮选分离的研究。
The flotation separation of molybdemun, copper and bismuth sulfides minerals, which are obtained by table flotation of wolframite primary concentrates, is studied using sulphites as depressants.
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