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CONCENTRATION OF KAYABAŞI-TRABZON (TURKEY) CU-ZN ORE BY FLOTATION

AUTHOR/S: YILMAZ, T., ALP, I., DEVECI, H., CELEP, O.
Sunday 1 August 2010 by Libadmin2005

5th International Scientific Conference - SGEM2005, www.sgem.org, SGEM2005 Conference Proceedings/ ISBN: 954-918181-2, June 13-17, 2005, 219- 226pp

ABSTRACT

In this study, flotation concentration of Trabzon-Kayabaşı Massive Sulphide ore was
investigated. The effects of particle size, reagent concentration (collector and depressant)
and agitation speed on the recovery of copper were studied. The results have shown that the
ore responded poorly to concentration by flotation with low efficiency of seperation of copper
minerals from sphalerite and pyrite. Changing the flotation conditions i.e. decreasing particle
size to >99% passing 38 μm or increasing the concentration of collector and depressant did
not produce the desired effect on the separation and recovery of copper. This could be
attributed mainly due to i) the incomplete liberation of the mineral phases present as the
mineralogical examination of the copper concentrate produced revealed and ii) probably the
inadvertent activation of sphalerite by copper ions released during the conditioning and
flotation period. High grade copper concentrates were produced only at the expense of low
recoveries (e.g. 41.4% Cu at 26% recovery). Production of a bulk Cu-Zn concentrate rather than separate Cu and Zn concentrates appeared to be more suitable option for the treatment
of the ore.

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