Study on the Accelerant to the Sodium Oleate during Diaspore Flotation
Sodium oleate was an effective diaspore collector, whereas chelate collector OL2 showed certain collecting power over diaspore and nonionic surfactant OL3 showed little collecting ability. Then experiments were carried out using sodium oleate as the main collector with the addition of OL2,OL3 to study the influences on diaspore flotation, it could be seen from the experiments that accelerants had a marked influence on the recovery of diaspore, which could be raised by 10%,and the addition sequence also affected the flotation behavior: the best results could be gained when the accelerants were mixed thoroughly before adding and the best ratio of collector OL1 and accelerant OL2, OL3 stood at 30:2:1. Based on the calculation of the ingredients in the sodium oleate solution, sodium oleate reacted with surface of the mineral and formed the acid-soap polymer HOl-Ol- when pH was about 9.Zeta potential test showed the accelerant promoted the absorption of collector on the mineral surface,which lowered zeta potential.As could be seen from surface tension experiments,the addition of accelerant OL3 lowered CMC value of OL1 solution,which was equivalent to raise the power of the agents.Further Infrared Ray experiments showed the co-absorption of OL1 and OL2 make aluminum oleate on the mineral surface more stable.Up till now,the mixed reagents with sodium oleats as the main collector,combined with other two accelerants had been used in the Zhongzhou concentration plant,which is the first diaspore flotation plant in China.
Bauxite Diaspore Flotation Accelerant Combined reagent
S. J. Liu W. Q. Qin Y. H. Hu J. Wang Y. P. Chen Z. N. Liu
School of Mineral Processing and Bioengineering Central South University, Changsha China
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
1441-1446
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）