| Title |
Separation of Molybdenite from bismuthinite by flotation |
| Abstract |
The Sangdong Tungsten Mine in Korea produces molybdenite and bismuthinite as by products. The flotation of the above minerals has been done by means of differential oxidation of bismuthinite surface by heating. In this experiment, potassium dichromate is used as the depressor of bismuthinite at pH 6.0, and the results is summarized as follows: 1) Potassium dichromate is the effective depressor of bismuthinite in the acidic pulp. 2) The grade and recovery of molybdenite by the third cleaner flotation were 81 percent and 76 percent respectively, and the selectivity index was 10.9. 3) It was found that the operation cost of flotation can be cut down, and the recovery of molybdenite be improved as much as 20 percent more than that at Sangdoag Tungsten Mine. |