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THE EFFECT OF GRINDING TIME ON FLOTATION OF COMPLEX Cu-Zn SULPHIDE ORE IN JAMESON CELL

AUTHOR/S: H. GURSOY, B. OTEYAKA
Sunday 1 August 2010 by Libadmin2010

10th International Multidisciplinary Scientific GeoConference - SGEM2010, www.sgem.org, SGEM2010 Conference Proceedings/ ISBN 10: 954-91818-1-2, June 20-26, 2010, Vol. 1, 683-690 pp

ABSTRACT

For the flotation of complex Cu-Zn sulphide ores; mineralogical texture of ore,
liberation particle size of minerals, selection of suitable flotation reagents and the
technological properties of flotation machines are very important. The ore to be
investigated in this study is complex Cu-Zn sulphide ore taken from East Karadeniz
region that have some problems depending on fine liberation particle size. Ore grade is
2.75% Cu and 6.75% Zn. In this study, the determination of particle liberation size and
the effect of grinding time on grade and recovery of complex Cu-Zn sulphide ore were
investigated by flotation method. The Jameson flotation cell is a type of flotation device
that has a high flotation performance and used for fine grained minerals having
problematic flotation behavior. The Jameson cell already were used for concentration of
various metallic ores in pilot and full scale, successfully and have much instrumental
parameters that affect the flotation recovery, such as down comer diameter, plunging
length of down comer, etc. Chalcopyrite liberation size was determined as -38+25 mm
by mineralogical analyses. To reach this liberation size and to find out the optimum
grinding time, the samples were ground at different grinding times, and then these
samples were floated in Jameson cell. Afterwards, the concentrate grades and flotation
recoveries for each different grind out sample were determined. It was observed that the
optimum liberation size obtained from mineralogical analyses was consistent with the
flotation test results.

Keywords: Flotation, Jameson Cell, Complex Cu-Zn sulphide Ore, Grinding

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