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| HYDROPHOBICITY-HYDROPHILICITY BALANCE RELATIONSHIPS FOR COLLECTORLESS FLOTATION OF SULPHIDE MINERALS |
| SUN Shuiyu;WANG Dianzuo;LI Bodan Department of Mineral Engineering; Central South University of Technology; Changsha |
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Cite this article:
SUN Shuiyu;WANG Dianzuo;LI Bodan Department of Mineral Engineering; Central South University of Technology; Changsha. HYDROPHOBICITY-HYDROPHILICITY BALANCE RELATIONSHIPS FOR COLLECTORLESS FLOTATION OF SULPHIDE MINERALS. Acta Metall Sin, 1993, 29(9): 53-59.
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Abstract Hydrophobicity-hydrophilicity balance relationships for collectorlessflotation, including self-induced and Na_2S-induced flotation, have been established, throughsolvent extraction-chemical analyses of neutral sulphur (S~0) from sulphide mineral surfaces,measurements of pulp potential and flotation tests. They may be indicated as [S~0]/[OH~-]and[S~0]/([OH~-]+[HS~-]) respectively. The neutral sulphur extracted was considered to be re-sponsible for the hydrophobicity, and the amount of which was controlled by pulp potential.The critical value of neutral sulphur amount was proposed as a new concept, and was used toindicate the hydrophobic degree and flotation behaviour. The hydrophilicity was attributed toOH~- ion for self-induced flotation and both OH~- and HS~- ions for Na_2S-inducedflotation. At a given pH value, hydrophobicity and floatability increase with the amount ofneutral sulphur extracted. At different pH values, the higher pH results in the strongerhydrophilicity, and hence hydrophobicity and flotation require more amount of S~0. The lowerpH values are in correspondence with smaller amount of S~0. The critical value of amount ofS~0 to Na_2S-induced flotation is higher than that to self induced flotation because of thehydrophilicity of HS~- ions.
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Received: 18 September 1993
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1 Sutherland K L, Wark I W. Principles of Flotation. Melbourne: Australian Inst Min Metal, 1955: 119
2 Barsky G. Trans Am Inst Min Metall Eng, 1934; 112: 236
3 Trahar W J. In: Jones M H, Woodcook J T eds., Principles of Mineral Flotation, Proc Austrian IMM, Parkville, Australia: Australian Inst Min Metal, 1984: 117
4 Buckley A N, Walker G W. In: Forssberg E ed, Proc 16th Int Miner Processing Congress, Stokholm: The Swedish IMM, 1988: 589
5 Walker G W, Richardson P E, Buckley A N. Int J Miner Process, 1989; 25: 155
6 孙水裕,王淀佐,李柏淡.中南矿冶学院学报(选矿专辑),1991;22(3) :43
7 孙水裕,王淀佐,李柏淡.中南矿冶学院学报,1993;24(2) :181
8 孙水裕,王淀佐,李柏淡.有色金属(季刊),1993;45(2) :32
9 孙水裕,王淀佐,李柏淡.有色金属(季刊),1992;44(2) :17; |
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