Removal of manganese and iron from the alloy obtained from direct smelting of sea nodules

Sahu, K K and Agarwal, Sanjay and Ojasvi, and Mishra, D and Agrawal, A and Konar, J and Minj, R K and Godiwalla, K M (2010) Removal of manganese and iron from the alloy obtained from direct smelting of sea nodules. In: Proceedings of the XI International Seminar on Mineral Processing Technology (MPT-2010), Dec 2010, NML Jamshedpur, India.

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Abstract

The alloy obtained from smelting of polymetallic sea nodules contains a substantial amount of iron and manganese. For subsequent processing to obtain a sulphide matte from this alloy for the recovery of pure copper, nickel and cobalt, the iron and manganese content needs to be reduced to a manageable level. For achieving this objective, initially few trials were conducted for oxidation of the molten alloy by blowing oxygen in an induction furnace. However, due to slow kinetics of oxidation as well as wear of furnace lining, further trials were conducted by the addition of an oxidizing agent such as pyrolusite. A substantial amount of iron and almost complete manganese could be decreased in the resultant alloy, making the same suitable for the preparation of sulphide matte and subsequent hydrometallurgical processing for recovery of copper, nickel and cobalt.

Item Type:Conference or Workshop Item (Paper)
Official URL/DOI:http://eprints.nmlindia.org/2658
Uncontrolled Keywords:Sea nodules, Smelting, Oxidation, Pyrolusite.
Divisions:Metal Extraction and Forming
ID Code:2658
Deposited By:Mr. A.K. Sahu
Deposited On:22 Mar 2011 16:42
Last Modified:12 Feb 2013 14:05
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