Impact of gypsum on flotation of scheelite and fluorite using sodium oleate as collector |
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| Authors: | Zhiguo Zhang Zilong Ma Yinfei Liao |
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| Affiliation: | 1. School of Chemical Engineering and Technology, China University of Mining and Technology , Xuzhou, China;2. Chinese National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology , Xuzhou, China;3. Chinese National Engineering Research Center of Coal Preparation and Purification, China University of Mining and Technology , Xuzhou, China |
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| Abstract: | ABSTRACT In this study, effect of calcium and gypsum on scheelite and fluorite was investigated using sodium oleate as collector. Micro-flotation and contact angle results showed that the adsorption of calcium could inhibit the hydrophobicity of scheelite and fluorite. Moreover, sulfate could enhance the inhibition. FT-IR results showed that calcium could be priori precipitated into calcium oleate and adsorb on mineral surface. The adsorption of calcium could increase the scheelite potential to IEP, while it showed limited effect on fluorite potential. However, the interaction of calcium on scheelite and fluorite in gypsum solution was more complex than that in calcium solution. |
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| Keywords: | Scheelite fluorite gypsum calcium ion sulfate ion |
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