Add time:08/08/2019         Source:sciencedirect.com

In this work, the flotation of pentlandite/lizardite system was studied in deionized water, brine and solutions containing some special “constitution ions” with different ionic strengths, respectively. The flotation results show that the “constitution ions” significantly improve the recovery efficiency of pentlandite compared with deionized water or brine. The possible mechanisms responsible for the improved flotation separation in these special solutions are investigated by electrokinetic studies, scanning electronic microscopy (SEM) analysis and size distribution tests. Experimental results demonstrate that the reconstitution of electrical double layer mitigates the coating of lizardite particles on pentlandite surfaces and induces the aggregation of lizardite particles for the enhanced recovery of pentlandite.

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