A comparative study for smelting of chromite ore,pellets,briquettes and sinter

Abstract

Ferrochrome (>62%Cr) and charge chrome (45–52%Cr) production using the submerged arc furnace (SAF) is an established practice in India. As the majority of Cr rich Indian chromite ore are friable in nature and available in fine form, utilisation of chromite fines for production of superior quality ferrochrome is essential. For this purpose, in the present study, the smelting of chromite pellets, briquettes, sinter and lump ore has been carried out in an electric arc furnace of 50 kVA. The energy consumption, yield, Cr recovery and quality of Fe–Cr produced have been compared for different Cr bearing materials. Sinters and pellets have found to be more suitable than briquettes and poor quality lump ore in terms of energy consumption and yield.

Keywords

CHROMITE ORE SINTER PELLETS BRIQUETTES FE–CR ENERGY YIELD CR RECOVERY

Get full access to this article

View all access options for this article.

References

Sharma

R. K.

: JPC Bull., 2003, 3, (10), 9–18

Raju

K. S.

: ‘Chromite’, Indian Mineral Year Book-2003, 23.1.-23.21; 2003, Nagpur, Indian Bureau of Mines.

Kari

, Kapure

, Rao

S. M.

and Rao

N. D.

: Tata Search, 2006, 1, 65–70.

BATEMAN: ‘Assmang's New Ferro Chrome Smelter’, available at: www.batemanengineering.com/TECHNOLOGY/9june/Assmang%2OPP%2005.pdf (16 April 2007).

sundaresan

T. S.

: ‘Ferro alloy industry requires level playing field in the Liberelised economy’, Indian Ferro Alloy Producer Association, April 2001, available at: www.steelworld.com/indaprOl.htm (16 April 2007).

Ghokhale

K. V. G. K.

and Rao

T. C.

: ‘Ore deposits of India’, 3rd edn, 118-120; 1983, New Delhi, Affiliated East-West Press Pvt Ltd.

Fine

H. A.

and Geiger

G. H.

: ‘Handbook on materials and energy balance calculations in metallurgical process’, 1st edn, 384-517; 1979, New York, The Metallurgical Society of AIME.