This article makes a test of dressing or in Mn-ore development in a subway of southwest by randoming different ore samples.

针对西南某地铁锰矿的开发利用进行了选矿探索试验，并取矿区不同的矿样进行试验研究。

youdao

This has found a way out for the usage of soft Mn-ore with low-grade after research. It solves the problem of oxidized Mn with high-grade of the usage of Mn-sulphate for a long time.

经过本研究为低品位软锰矿的利用找到了出路，解决了硫酸锰生产长期需要使用高品位氧化锰矿的难题。

youdao

Saline Halos are often formed in the soil containing Fe and Mn oxides and organic material by a concealed sulfide ore body under the action of the ground water.

隐伏硫化物矿体在地下水的作用下，在其覆盖层浅部含铁锰氧化物和有机质的土壤中形成盐晕。

youdao