Effect of Ca2+ and Mg2+ on Floatability of Smithsonite and Hemimorphite

Ming Xiao Li; Sheng Jian; Wen Juan Zhao

doi:10.4028/www.scientific.net/AMR.813.298

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 813Effect of Ca2+ and Mg2+ on Floatability of...

Effect of Ca²⁺ and Mg²⁺ on Floatability of Smithsonite and Hemimorphite

Abstract:

In this paper the effects of Ca²⁺ and Mg²⁺ on the floatability of smithsonite and hemimorphite were investigated through microflotation. The flotation tests were performed using purified samples from Lanping mine of China by the microflotation technique. The Ca²⁺ flotation results showed that the recovery of smithsonite decreased from 89.81% to 83.92% and the recovery of hemimorphite decreased from 84.83% to 76.03% when increasing Ca²⁺ concentration from 200mg/L to 1000mg/L. Also, while increasing Mg²⁺ concentration from 200mg/L to 1000mg/L the smithsonite and hemimorphite recoveries declined to reach 80.03% and 71.75%, respectively. It can be concluded that the recoveries of smithsonite and hemimorphite showed a decreasing trend with the increasing of Ca²⁺ and Mg²⁺ concentration, and the effect on the recovery of hemimorphite was larger. Moreover, the effects of Mg²⁺ on the smithsonite and hemimorphite are greater in the same test condition, which could be attributed to the solubility product difference of Ca (OH)₂and Mg (OH)₂.

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Periodical:

Advanced Materials Research (Volume 813)

Pages:

298-301

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.813.298

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Online since:

September 2013

Authors:

Ming Xiao Li, Sheng Jian, Wen Juan Zhao

Keywords:

Ca²⁺, Floatability, Hemimorphite, Mg²⁺, Smithsonite

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