The Induction Time on Galena and Sphalerite Particles with Different Hydrophobicity Characteristics
This paper reports the results of induction time measurements carried out on the products of film flotation of galena and sphalerite particles from three different size fractions (38～75μm; 75～150μm;150～212μm). As expected, the tailings (sinking fraction) from film flotation at any particular surface tension, had always longer induction times than the concentrates (floating fraction), for both minerals. The difference between the induction times of film flotation concentrate and tailings could be as little as 2.5 ms and 5 ms, and as large as 6 ms and 10 ms. These differences can be related to the different hydrophobic characteristics of these fractions, as expressed by (γc) and composition of the particular film flotation product.In addition, the induction times of the larger particle size fraction were shown to be longer than for the corresponding smaller particle size fraction, even though the average γc (degree of hydrophobicity) of these fractions appears to be very similar. Desliming, Cu activation and collector addition to the sphalerite samples was shown to decrease the induction time values significantly.
Hydrophobicity Critical surface tension Film flotation Induction time Sulphide minerals
M. E. Holuszko A. Min E.V. Manlapig J.P. Franzidis
University of British Columbia, NBK Institute of Mining Engineering, Canada University of Queensland, Julius Kruttschnitt Mineral Research Centre, Australia University of Cape Town, Chemical Engineering, South Africa
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
1113-1120
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）