Extraction of silicomanganese from marine and low grade mineral resources

Alex, T C and Godiwalla, K M and Kumar, S and Jana, R K (2007) Extraction of silicomanganese from marine and low grade mineral resources. In: XI International Ferro Alloy Congress, Feb. 18-27, 2007, New Delhi.



Manganese nodule, available in ocean beds, is a potential resource of the future for copper, nickel and cobalt. Recovering only these metals, containing less than 3% by weight, will result in the generation of large amount of residue. In addition to the material losses, several environmental and ecological problems arise out of this. The present study has been aimed at reducing the environmental and ecological problems associated with massive generation of this residue together with utilization of the resources. Presence of ~ 20% manganese and ~16% silicon in the residue has prompted us to check its suitability as a raw material for silicomanganese production. Lower manganese content and lower Mn/Fe ratio of the residue than that required for silicomanganese production has been corrected in this study by suitable blending. The efficacy of blending and its thermodynamic aspects using FACTSAGE software are discussed. The studies conducted indicate viability of bulk utilisation of the residue through silicomanganese production and thereby reducing the burden on environment to a great extent.

Item Type:Conference or Workshop Item (Paper)
Official URL/DOI:http://eprints.nmlindia.org/5675
Uncontrolled Keywords:silicomanganese; sea nodules
Divisions:Metal Extraction and Forming
ID Code:5675
Deposited By:Dr. A K Sahu
Deposited On:03 Jul 2012 14:11
Last Modified:03 Jul 2012 14:11
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