lean ore

基本解釋

Solution mining is a available method to extract gold from lean ore, relic, waste dumps and tailings.
溶浸采礦是從貧礦、殘礦、廢石堆、尾礦中提取金的一種行之有效的方法。
This paper introduced the experiments on the large grain size and high heap gold leaching of stripped lean ore from open pit mining of gaolong co.
介紹了高龍公司利用露采剝離貧礦進行大粒度、大堆高的堆浸提金試驗。
In mining the extremely fractured thin ore body, the separation of waste rock in the conventional shrinkage stoping was replaced by the separation of the rich ore and retaining the lean ore.
對極破碎薄礦體的開采，采用了將常規(guī)的留礦法中分選廢石改為分選富礦石留貧礦石的采礦方法。