Effects of Ca2+ and SO42− ions on fluorite flotation
Luobing Xun 1,   Jiacheng Hu 1,   Qing Shi 1  
,   Guofan Zhang 1
 
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School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China.
CORRESPONDING AUTHOR
Qing Shi   

School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China.
Publication date: 2021-01-28
 
Physicochem. Probl. Miner. Process. 2021;57(2):96–105
 
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ABSTRACT
The effects of Ca2+ and SO42− on the flotation behaviour of fluorite with sodium oleate as a collector and the underlying mechanism by which these effects were investigated via micro-flotation experiments, solution chemistry calculations, and X-ray photoelectron spectroscopy. The results indicated that the addition of SO42− and Ca2+ inhibited fluorite flotation and the inhibition effect was increased by the addition of pH. This was mainly due to the increase of the sulphate-containing components in the solution and the adsorption of SO42− on the surface of fluorite. With the increase of pH, the alkalinity of the solution increases, OH- and more SO42− are further adsorbed on the fluorite surface, thereby reducing the recovery of fluorite flotation.
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ISSN:1643-1049