China's phosphorus ore beneficiation methods put into operation since 1958, China's large phosphate rock flotation plant, Block 1, 1.2 million t / a of - after Jinping phosphate concentration plant in Jiangsu, Hebei in 1976, and built a horse camp phosphate The 300,000 t/a medium-sized magmatic rock-type phosphate ore flotation plant, the completion of these two phosphate rock flotation plants marks that China has mastered the mineral processing technology of the easy-selected phosphate rock. In the early 1970s, the direct flotation process of siliceous calcium deposits (glyphosite) with S808 as an inhibitor was developed, which made China a major breakthrough in the selection of refractory colloidal phosphate ore. In the late 1980s, China made a major breakthrough in the beneficiation technology of difficult-to-select colloidal phosphate ore. It has successively developed technologies such as direct flotation, reverse-positive flotation, scrubbing and heavy media sorting, and successfully applied to industrial production. Because the phosphorus minerals and gangue minerals of phosphorus resources in China are symbiotic and closely embedded, the granularity is fine, and only the flotation method can obtain better sorting effect. Therefore, the flotation method is the most used beneficiation method for phosphate rock in China.

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