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10 de may. de 2020 · In addition, increasing the solution pH to 10 does not prevent the adsorption of xanthate and Aerofloat 238 on chalcocite and the result is in line with the fact that chalcocite floats well in a ...
5 de dic. de 2008 · An online xanthate monitoring system was constructed for the continuous determination of xanthate concentrations in laboratory flotation pulps. This system consists of an online filter which is immersed in the pulp in a flotation cell, a peristaltic pump to draw clear solution through the filter and pump it through a UV spectrometer set at 301 ...
1 de may. de 1996 · The chemical properties of the mineral/solution interface have a decisive influence on the flotation behavior of minerals. Here, chalcopyrite, chalcopyrite-pyrite mixture, and chalcopyrite-galena mixture were reacted in 0.1 mM sodium isobutyl xanthate solution at natural pH, then centrifuged, fast-frozen, and characterized with time-of-flight secondary ion mass spectrometry at –125 °C (Cryo ...
Xanthate and dithiophosphate are more generic collectors and used in large tonnages, though the use of other collectors is steadily increasing. Much of the xanthate use is in flotation systems, where selectivity between sulfide minerals is not an issue and the goal is to recover most of the sulfides and precious metal values irrespective of ...
1 de dic. de 1997 · Immme~ JeUl~Lm mlnERPJ, PRO(BEInG ELSEVIER Int. J. Miner. Process. 52 (1997) 161-186 Solution interaction of ethyl xanthate and sulphite and its effect on galena flotation and xanthate adsorption S.R. Grano, C.A. Prestidge, J. Ralston * lan Wark Research Institute, University of South Australia, The Levels, S.A. 5095, Australia Received 15 July 1996; accepted 12 July 1997 Abstract The solution ...
16 de oct. de 2002 · However, in alkaline solutions, the hydrophobicity decreased with increasing solution potential due to the formation of CuO. The flotation of enargite was also studied in the presence of ethyl xanthate at pH 10.5. These results showed that enargite floated over a range of 0.2 V in the presence of xanthate.
1 de dic. de 2008 · In solution, the xanthate peak at 301 nm (Hao et al., 2000 (Hao et al., , 2008 Khmeleva et al., 2002;Montalti et al., 1991) was identified but disappeared from solution in the presence of Cu ...
