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INVESTIGATION OF ULTRASONICS USE FOR COLEMANITE FLOTATION

AUTHOR/S: S. G. OZKAN, C. GUNGOREN
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, 661-668 pp

ABSTRACT

The aim of this study is to investigate ultrasonics use for colemanite flotation. The
samples used in the study were provided from Eti Mines Inc.’s Emet Boron Works. The
samples were 0-3 mm concentrates which could have not been increased to desirable
B2O3 % grades. At first, determination of moisture and grinding experiments were
carried out. The liberation size of the ore was determined as minus 250 μm and minus
38 μm was removed because of the negative effect of slime coatings in flotation. Then,
it was decided to use -250 +38 μm fractions in flotation tests. Flotation tests were
carried out in two different approaches for purpose of determination of the effects of
ultrasonic pre-treatment in colemanite flotation. Conventional flotation tests were
carried out in the first step. After that, ultrasonically pre-treated samples were floated.
The reagents were a sodium sulphonate type collector and an alcohol type frother. The
frother quantity was kept at 100 g/t. However, the collector was tested in four different
dosages: 500, 1000, 1500 and 2000 g/t. In conclusion, ultrasonic pre-treatment was
found to have positive effects on B2O3 % grade and % recovery values. 41% B2O3 feed
grade was increased to 49% by ultrasonic pre-treated flotation with 85 B2O3 recovery.

Keywords: Flotation, Colemanite, Borates, Ultrasonics, Ultrasonic energy

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