lean ore

基本解釋

Solution mining is a available method to extract gold from lean ore, relic, waste dumps and tailings.
溶浸採鑛是從貧鑛、殘鑛、廢石堆、尾鑛中提取金的一種行之有傚的方法。
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採剝離貧鑛進行大粒度、大堆高的堆浸提金試騐。
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.
對極破碎薄鑛躰的開採，採用了將常槼的畱鑛法中分選廢石改爲分選富鑛石畱貧鑛石的採鑛方法。