The magnetic separation concentate products of Jingtieshan roasted lump iron ores are classified by a cyclone with double overflow tubes to obtain fine-grained overflow products.The reverse flotation condition tests are conducted on the fine-grained overflow product to study its different flotation characteristics under different dosages of collector and starch and under the conditions of flocculation and dispersion,and the methods to improve the quality and recovery of fine-grained iron mineral concentrates are explored.
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