Study on Wetting Behavior and Flotation Separation of Talc from Molybdenite of Non-Polar Surface Minerals

Abstract:

Molybdenite and talc were selected as research object in paper and crystal structure, interaction between H₂O molecule and minerals surfaces, surface wettability, flotation behavior were studied by density functional theory method and flotation experiments. The results showed that molybdenite and talc were layered minerals which exhibited similar surface wettability. H₂O molecule had hardly effect with molybdenite or talc and H₂O molecule prefers to stay with water rather than the minerals surfaces. The reason why talc interferes with the flotation molybdenite has been revealed. The flotation results showed that good floatability of talc was the key factor causing a low grade of concentrate in alkaline solution. Thus, it is the key factor to enlarge floatability difference between molybdenite and talc.

• Periodical: Key Engineering Materials (Volume 777)
• Pages: 282-286
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.777.282
• Online since: August 2018
• Authors: Qi Dong Zhang*, Xiao Li Li, Wen Ping Zhang, Kun Song
• Keywords: Flotation Separation, Molybdenite, Natural Floatability, Talc, Wetting Behavior

References

[1] YUAN Z T, ZHANG Q D, LIU J T. Influence and Mechanism of Metal Ions on Flotation of Molybdenite[J]. Journal of Northeastern University (Natural Science), 2016, 37(7):1013-1016.

[2] Zhang Qidong. Study on Classification Floatation of XinHua Molybdenum Ore [D]. Northeastern University, (2011).

[3] Beattie D A, Le H, Kaggwa G B N, Ralston J. The effect of polysaccharides and polyacrylamides on the depression of talc and the flotation of sulphide minerals[J]. Minerals Engineering, 2006, 19:598-608.

DOI: 10.1016/j.mineng.2005.09.011

[4] Kelebek S, Smith S Y G W. Wetting behavior of molybdenite and talc in lignosulphonate/MIBC solutions and their separation by flotation[J]. Separation Science & Technology, 2006, 36(2):145-157.

DOI: 10.1081/ss-100001072

[5] Lotter N O, Bradshaw D J, Becker M, et al. A discussion of the occurrence and undesirable flotation behavior of orthopyroxene and talc in the processing of mafic deposits[J]. Minerals Engineering, 2008, 21(12-14):905-912.

DOI: 10.1016/j.mineng.2008.02.023

[6] LONG Tao, FENG Qi-ming, LU Yi-ping, et al. Depression and dispersion effect of carboxy methyl cellulose on flotation of layered magnesium-silicates[J]. The Chinese Journal of Nonferrous Metals, 2011, 21(5):1145-1150.

[7] Zhao C H, Chen J H, Bo-Zeng W U, et al. Density functional theory study on natural hydrophobicity of sulfide surfaces[J]. Transactions of Nonferrous Metals Society of China, 2014, 24(2): 491-498.

DOI: 10.1016/s1003-6326(14)63087-9

[8] STIRLING A, BERNASCONI M, PARRINELLO M. Ab initio simulation of water interaction with the (100) surface of pyrite[J]. The Journal of Chemical Physics, 2003, 118: 8917-8926.

DOI: 10.1063/1.1566936

[9] Chander S, Fuerstenau D W. On the natural floatability of molybdenite[J]. Transaction of American Institute of Mining, Metallurgical, and Petroleum Engineers, 1972, 252(1):62-69.

[10] Braga P F A, Chaves A P, Luz A B. The use of dextrin in purification by flotation of molybdenite concentrates[J]. International Journal of Mineral Processing, 2014, 127(10):23-27.

DOI: 10.1016/j.minpro.2013.12.007

[11] ZHANG Q D, YUAN Z T, LIU J T, et al. Effect of glucan on flotation separation of molybdenite and talc[J]. The Chinese Journal of Nonferrous Metals, 2016, 26(4):884-890.