Evolution of the bacteria population during the batch bioleaching of a cobaltiferous
pyrite in a suspended-solids bubble colum y comparison with a mechanically agitated reactor.
The drilling shows that cobaltiferous
carbonates, native copper and carrolite are common at depth, but it will be a while before we get there.
Bioleaching of cobaltiferous
pyrite using mixed cultures of T.
Column flotation for copper/cobalt separation is also planned as it seems to enhance depression of cobaltiferous pyrite.
A separate circuit treats approximately 450,000 mt/yr cobaltiferous ore grading an average 0.
Cobalt, however, can replace copper, calcium and perhaps also magnesium to a limited degree in such minerals as cobaltiferous malachite and cobaltoan calcite and dolomite.
It is often associated with very dark green cobaltiferous malachite, and can be distinguished by its invariably tan streak in comparison to the green streak of malachite.
The process to be employed by the plant involves the bacterial leaching of cobaltiferous pyrite, technology from Signet, neutralisation with limestone to remove acid and iron, removal of copper and nickel as saleable hydroxides with the purification of cobalt by solvent extraction (Krebs technology) and electrowinning.
The cobaltiferous stockpile lies close to the Queen Elizabeth National Park, some 12 km from the Kilembe mine.
Non-magnetic tailings from the iron-ore operation which contain chalcopyrite and cobaltiferous
pyrite are being treated at 150 mt/d.
Beck (1905), in his book on the nature of ore deposits, placed Kruisrivier in a class of its own, calling it a cobaltiferous
gold quartz vein deposit.
1 Mt of by-product cobaltiferous
pyrite concentrates stockpiled at the nearby town of Kasese.