Nine Mile River HealthCare research group of the presence of calcium magnesium phosphate mine low grade quality were studied for even selected grinding fineness, reagent system, flotation time, the use of other major backwater conditions tested, made The main technical achievements are as follows: 1. The self-synthesized new type of demagnetization agent has good selectivity and can efficiently collect dolomite and calcite ; the raw material source is wide, the price is low, and it is non-toxic and harmless. 2. Adopting a set of one-pass sweeping process, the process flow is simple, the processing cost is low, the beneficiation index is good, and the beneficiation efficiency is high. The quality of the concentrate reaches the secondary standard of wet-process phosphoric acid. 3, can be normal temperature and low temperature flotation. 4. The ore dressing wastewater can be recycled and used, and the sewage discharge is small. In 2007, it was approved by the Science and Technology Department of Hubei Province.
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