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大冶铁矿浮选产物之一的硫钴精矿中钴是以类质同象存在于黄铁矿中，其分布是不均匀的，因此，提高硫钴精矿钴品位难度较大，有用矿物粒度较细，其解离度也比较高，但部分有用矿物呈复杂的浸染交代结构彼此或与脉石嵌镶，故欲提高分离浮选作业指标则比较困难。
Cobalt in the sulfur-cobalt concentrates, one of the flotation products of Daye Iron Mine, exists in the pyrite in the same way and is distributed unevenly. Therefore, it is more difficult and more effective to improve the cobalt grade of the sulfur-cobalt concentrate The finer grain size and the higher degree of dissociation make it difficult for some useful minerals to show complicated dip-interlace structure or mosaic with gangue. Therefore, it is more difficult to improve the index of flotation separation.