A large amount of rare earths exists in tails from concentrating mill of Baotou Iron and Steel Co. and can be reused.
包钢选矿厂的尾矿中含有大量稀土，可再次利用。
This paper introduces the renovation measures of green lighting and the situation before it was popularized in a concentrating mill of Yunnan tin group.
介绍了云锡集团某选矿厂推广绿色照明前的况状和绿色照明改造措施。
The principle of the mill is concentrating the milling energy into a confined annular gap, in order to increase energy density and acquire high milling efficiency.
其基本原理是将研磨能量集中到一个狭小的缝隙内，大幅度提高研磨能量密度，以获得良好的研磨效率。
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