Mycrobially Induced Processing of Mineral Fines

Natrajan, K A and Deo, Namita (2000) Mycrobially Induced Processing of Mineral Fines. In: UNSPECIFIED.



Microorganisms such as Bacillus polymyxa which occur indigenously associated with several ore deposits, bring about significant surface chemical changes on interacted minerals such as hematite, corundum,calcite, quartz and kaolinite. Bacterial interaction rendered quartz and kaolinite surfaces hydrophobic, while hematite, corundum and calcite surfaces became more hydrophilic. Biotrearment of mineral mixtures containing the above minerals was found to result in selective _flocculation and selective flotation. It is shown that selective removal of silica and alumina from iron ores and bauxite can be brought about by biological processes.Mechanisms behind such microbially induced beneficiation processes are illustrated with res-pect to processing of fine particles.

Item Type:Conference or Workshop Item (UNSPECIFIED)
Uncontrolled Keywords:Bacillus polymyxa, Mineral fines, Iron ore, Flocculation
Divisions:Mineral Processing
ID Code:2928
Deposited By:Sahu A K
Deposited On:02 Jun 2011 12:08
Last Modified:13 Jan 2012 12:38
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