In this paper, the effect of bacterial conditioning on KBI Murgul
(Turkey) copper concentrate was investigated by the use of
Acidothiobacillus ferrooxidans (DSM 11477). The various
parameters such as bacterial population, conditioning time and particle
size were studied. Test results indicated the copper grade increase of
about 22% in flotation copper ore through bacterial conditioning of
pyrite surfaces resulting in pyrite depression
