Solution chemistry of carbonate minerals and its effects on the flotation of hematite with sodium oleate
来源期刊:International Journal of Minerals Metallurgy and Materials2017年第7期
论文作者:Dong Li Wan-zhong Yin Ji-wei Xue Jin Yao Ya-feng Fu Qi Liu
文章页码:736 - 744
摘 要:The effects of carbonate minerals(dolomite and siderite) on the flotation of hematite using sodium oleate as a collector were investigated through flotation tests, supplemented by dissolution measurements, solution chemistry calculations, zeta-potential measurements, Fourier transform infrared(FTIR) spectroscopic studies, and X-ray photoelectron spectroscopy(XPS) analyses. The results of flotation tests show that the presence of siderite or dolomite reduced the recovery of hematite and that the inhibiting effects of dolomite were stronger. Dissolution measurements, solution chemistry calculations, and flotation tests confirmed that both the cations(Ca2+ and Mg2+) and CO32+ions dissolved from dolomite depressed hematite flotation, whereas only the 23CO-ions dissolved from siderite were responsible for hematite depression. The zeta-potential, FTIR spectroscopic, and XPS analyses indicated that Ca2+, Mg2+, and CO32-(HCO3-) could adsorb onto the hematite surface, thereby hindering the adsorption of sodium oleate, which was the main reason for the inhibiting effects of carbonate minerals on hematite flotation.
Dong Li1,Wan-zhong Yin1,2,Ji-wei Xue1,Jin Yao1,Ya-feng Fu1,Qi Liu3
1. School of Resources and Civil Engineering,Northeastern University2. College of Zijin Mining,Fuzhou University3. Department of Chemical and Materials Engineering,University of Alberta
摘 要:The effects of carbonate minerals(dolomite and siderite) on the flotation of hematite using sodium oleate as a collector were investigated through flotation tests, supplemented by dissolution measurements, solution chemistry calculations, zeta-potential measurements, Fourier transform infrared(FTIR) spectroscopic studies, and X-ray photoelectron spectroscopy(XPS) analyses. The results of flotation tests show that the presence of siderite or dolomite reduced the recovery of hematite and that the inhibiting effects of dolomite were stronger. Dissolution measurements, solution chemistry calculations, and flotation tests confirmed that both the cations(Ca2+ and Mg2+) and CO32+ions dissolved from dolomite depressed hematite flotation, whereas only the 23CO-ions dissolved from siderite were responsible for hematite depression. The zeta-potential, FTIR spectroscopic, and XPS analyses indicated that Ca2+, Mg2+, and CO32-(HCO3-) could adsorb onto the hematite surface, thereby hindering the adsorption of sodium oleate, which was the main reason for the inhibiting effects of carbonate minerals on hematite flotation.
关键词: