Study on comparison adsorption of calcium and sulfate on scheelite and fluorite surfaces

被引：8
|
作者：
Zhang, Zhiguo [1 ,2 ]
Cao, Yijun [2 ,3 ]
Liao, Yinfei [2 ]
Ma, Zilong [2 ]
机构：
[1] China Univ Min & Technol, Sch Chem Engn & Technol, Xuzhou, Jiangsu, Peoples R China
[2] China Univ Min & Technol, Chinese Natl Engn Res Ctr Coal Preparat & Purific, Xuzhou 221116, Jiangsu, Peoples R China
[3] Zhengzhou Univ, Henan Prov Ind Technol Res Inst Resources & Mat, Zhengzhou, Henan, Peoples R China
来源：
SEPARATION SCIENCE AND TECHNOLOGY | 2019年 / 54卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Calcium-bearing mineral; scheelite; fluorite; calcium; gypsum; SELECTIVE FLOTATION; MINERALS; GYPSUM; ACTIVATION; SEPARATION; MECHANISM; ENERGIES; REAGENT; COPPER; OLEATE;
D O I：
10.1080/01496395.2018.1534865
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
This study investigated the adsorption of calcium and gypsum on scheelite and fluorite using micro-flotation, X-ray photoelectron spectroscopy, scanning electron microscope with energy-dispersive spectrometer, and zeta potential measurements. Micro-flotation showed scheelite recovery is more sensitive to calcium, and gypsum shows stronger inhibition than calcium. Stick-shape precipitates as sulfate-bearing are only found on fluorite surface in gypsum solution. Change law of the zeta potentials of scheelite and fluorite in gypsum solution is obviously different from that in calcium solution. Therefore, we concluded that gypsum would make the separation of scheelite from fluorite more difficult than calcium.
引用
收藏
页码：1247 / 1256
页数：10
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