Study on Separation of a Low Magnesium Semi-Weathered Phosphate Ore from Yunnan

Weathered phosphate ore is an important part of phosphate ore resources, it contains a huge reserves of weathered phosphate ore resources in Yunnan regions. With the gradual consumption of the rich phosphate ore resources, recycling for weathering phosphate ore is receiving more and more people's attention. In this study, using a low magnesium semi-weathered phosphate ore which from Yunnan Dianchi Lake area as the research object, and based on its ore properties established a experimental program of pre- desliming with cyclone and then flotation. The loss rate of P₂O₅ under 20% on the desliming operation, then under the condition of ore grade of P₂O₅ is 21.23% using a positive-reverse flotation process, ultimately obtained a test indicators of phosphate concentrate of P₂O₅ grade of 28.41% and P₂O₅ recovery of 87.25%, which is a foundation of development and application of phosphate ore from Tian Ning semi-weathering ore.