Abstract
Tin mud ore separation is always the key to improve the utilization of tin resources. In view of the tin mud ore in Gejiu Yunnan province, the circulating fluidized bed is used for preconcentration. And reasonable separation parameters were determined based on the ore properties. When the tin grade in the feed is 0.3%, we can obtain the rough concentrate whose tin grade is 0.492% and recovery is 67.35%, and 60% of ore as tailings can be discarded. Then desulfurization and flotation was used, and YP-6 as collector, P86 as auxiliary collector and oxalic acid as regulator, a tin concentrate with grade of 4.38% and recovery of 77.18% was obtained by closed circuit test. The tin recovery of original mud ore was 51.02%, and the separation effect was improved.
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