Bismuth Flotation & Recovery

The froth color in the flotation circuit is a reasonable parameter to qualify the state and performance of the circuit. Chalcopyrite has green color while galena and bismuth mine

rals present a bluish color, many times silvery when the performance is excellent.

A bluish froth with silvery iridescences indicates a good reagents dosage and consequently there are an excellent collection of lead and bismuth minerals. See Figure 6. In the first rougher cells, bubbles must be heavy, vigorous and viscous. These characteristics suggest a good recovery in these cells. See Figure 7.

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