manganese ore resources are rich in china, yet with fewer rich ores but more low-grade ores, complex ores and fine refractory ores. rich ore resources are in critical shortage presently.
在我国,锰矿资源虽然十分丰富,但富矿少,贫矿、复杂矿和细粒难选矿多,富矿资源目前严重短缺。
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.
对极破碎薄矿体的开采,采用了将常规的留矿法中分选废石改为分选富矿石留贫矿石的采矿方法。
due to putting this plan into practice, the rich ore were produced , as well as a full recovery of rich iron ore resources was realized, with better economical benefit.
通过这一方案的实施,实现了富矿精出,充分回收了富铁矿石资源,获得了较好的经济效益。
the rich ore is insufficient in resources reserve;
富矿资源储备不足;
the form of onyxbanded poor ore was controlled in the shear stage of the structure, the form of vein rich ore was controlled in the brittle stage.