Depressing effect of sodium hexametaphosphate on apatite in flotation of rutile

Hao Ding1), Hai Lin2), and Yanxi Deng1) 1) School of Materials Science and Technology, China University of Geosciences (Beijing), Beijing 100083, China 2) Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, China

摘 要：The separation of rutile from apatite by flotation and the mechanism of depressing the apatite of sodium hexametaphosphate were studied. The results showed that rutile and apatite could be separated by using alkyl-imino-bismethylene phosphoric acid and sodium hexametaphosphate as a collector and a regulator, respectively. Sodium hexametaphosphate could selectively dissolve calcium ions on the apatite surface, and make calcium ions break away from lattice binding through combining.

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