Study of floatability and crystal chemistry analysis of scheelite and calcium minerals

The relationship between floatability and crystal structure of scheelite and other calcium minerals was studied through pure mineral flotation test,XPS test and theoretical calculation of the chemical bonds.The results show that the order of Ca-X intensity for mineral crystal structure is scheelite garnet calcite fluorite,and the reaction order of Ca2+ and oleate ions is scheelite calcite fluorite according to exposure position of Ca2+ on mineral surface.The mechanism that other calcium minerals are inhibited under the action of sodium hexametahposphate is the surface Ca2+ acted with the collector are decreased from solid phase to liquid phase because of weaker Ca-X intensity.Other calcium minerals are inhibited selectively by the carboxymethylcellulose as the result of higher ∑Ca2+/∑Xn-relative content,which cause mineral surface electropositivity to be higher,and larger residual bond strength of oxygen element on mineral surface.