The technique is applicable to a high carbonate ore phosphorus low silicon content, is phosphate was suppressed under weakly acidic medium, then surfaced carbonate minerals with strong selective collector. The process is simple, the carbonate separation efficiency is high, and the normal temperature and low temperature flotation are realized.
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The removal rate of carbonate by the process is generally more than 80%, and the MgO of the phosphate concentrate can be reduced to less than 1%. The P 2 O 5 grade of flotation concentrate is related to the content of ore silicate. The lower the silicate in the ore, the higher the P 2 O 5 grade of the concentrate, and the P 2 O 5 grade of the concentrate is not easy to improve. The recovery rate of P 2 O 5 in mines is generally over 80%. The largest phosphate rock flotation plant in China, which was put into operation in 1995, is the “single carbonate flotation†process developed by Lianyungang Institute.
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