Effect of starch on surface properties of pyrite and chalcopyrite and its response to flotation separation at low alkalinity

被引：63
作者：
Han, Guang [1 ,2 ]
Wen, Shuming [1 ,2 ]
Wang, Han [2 ]
Feng, Qicheng [1 ,2 ]
机构：
[1] Kunming Univ Sci & Technol, State Key Lab Complex Nonferrous Met Resources Cl, Kunming 650093, Yunnan, Peoples R China
[2] Kunming Univ Sci & Technol, Fac Land Resource Engn, Kunming 650093, Yunnan, Peoples R China
来源：
MINERALS ENGINEERING | 2019年 / 143卷
基金：
中国国家自然科学基金;
关键词：
Starch; Pyrite; Chalcopyrite; Surface properties; Flotation separation; SELECTIVE FLOTATION; ORGANIC DEPRESSANTS; SULFIDE MINERALS; CORN STARCH; FLOCCULATION; ADSORPTION; OXIDATION; STATES; XPS; FLOATABILITY;
D O I：
10.1016/j.mineng.2019.106015
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The interaction behavior and mechanism of starch with pyrite and chalcopyrite surfaces and its effect on their flotation separation at low alkalinity were investigated by micro-flotation tests, zeta potential measurements, infrared spectroscopy, and X-ray photoelectron spectroscopy. The micro-flotation tests showed that starch exhibited an obvious depressive effect on pyrite, but not on chalcopyrite. Zeta potential measurements indicated that starch reduced the surface potential of pyrite, but had no significant effect on the surface electrical properties of chalcopyrite within a wide pH range. The infrared spectra showed that new characteristic peaks appeared after the pyrite surface was treated with starch, suggesting that starch could significantly interact with pyrite particles. The adsorption mechanism of starch onto the mineral surface was further ascertained by X-ray photoelectron spectroscopy, which revealed that starch interacted strongly with Fe sites on the pyrite surface, but only slightly with those on chalcopyrite. These results showed that starch strongly affected the surface properties of pyrite, but had only a slight effect for chalcopyrite. Use of starch as a depressant therefore enabled the flotation separation of chalcopyrite from pyrite at low alkalinity.
引用
收藏
页数：8
相关论文
共 49 条
[1]   Post-regrind selective depression of pyrite in pyritic copper-gold flotation using aeration and diethylenetriamine [J].
Agorhom, Eric A. ;
Skinner, W. ;
Zanin, M. .
MINERALS ENGINEERING, 2015, 72 :36-46
[2]   Effects of type and dosages of organic depressants on pyrite floatability in microflotation system [J].
Ahmadi, Mehran ;
Gharabaghi, Mahdi ;
Abdollahi, Hadi .
ADVANCED POWDER TECHNOLOGY, 2018, 29 (12) :3155-3162
[3]   Adsorption of guar gum and CMC on pyrite [J].
Bicak, O. ;
Ekmekci, Z. ;
Bradshaw, D. J. ;
Harris, P. J. .
MINERALS ENGINEERING, 2007, 20 (10) :996-1002
[4]   Selective depression of pyrite with polyacrylamide polymers [J].
Boulton, A ;
Fornasiero, D ;
Ralston, J .
INTERNATIONAL JOURNAL OF MINERAL PROCESSING, 2001, 61 (01) :13-22
[5]   SURFACE-STATES ON CUBIC D-BAND SEMICONDUCTOR PYRITE (FES(2)) [J].
BRONOLD, M ;
TOMM, Y ;
JAEGERMANN, W .
SURFACE SCIENCE, 1994, 314 (03) :L931-L936
[6]   SELECTION AND EVALUATION OF DIFFERENT DEPRESSANTS SYSTEMS FOR FLOTATION OF COMPLEX SULFIDE ORES [J].
BULATOVIC, S ;
WYSLOUZIL, DM .
MINERALS ENGINEERING, 1995, 8 (1-2) :63-76
[7]  
Bulut G, 2012, PHYSICOCHEM PROBL MI, V48, P39
[8]   Comparative XPS study between experimentally and naturally weathered pyrites [J].
Cai, Yuanfeng ;
Pan, Yuguan ;
Xue, Jiyue ;
Sun, Qingfeng ;
Su, Guizhen ;
Li, Xiang .
APPLIED SURFACE SCIENCE, 2009, 255 (21) :8750-8760
[9]   A review of the fundamental studies of the copper activation mechanisms for selective flotation of the sulfide minerals, sphalerite and pyrite [J].
Chandra, A. P. ;
Gerson, A. R. .
ADVANCES IN COLLOID AND INTERFACE SCIENCE, 2009, 145 (1-2) :97-110
[10]   Surface chemical and flotation behaviour of chalcopyrite and pyrite in the presence of Acidithiobacillus thiooxidans [J].
Chandraprabha, M. N. ;
Natarajan, K. A. .
HYDROMETALLURGY, 2006, 83 (1-4) :146-152
12345