Production of Crude Ferronickel From Sivrihisar Laterite Ores of Turkey
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Date
2013
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John Wiley & Sons inc
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Abstract
In the current work, laboratory-scale smelting experiments were conducted using Sivrihisar laterites (1.26% Ni). The ore samples previously subjected to drying, calcination and prereduction stages were smelted in alumina crucibles in a horizontal tube furnace under argon atmosphere. For the smelting system used in the present work, 1550 degrees C and 40 minutes were determined to be the optimum smelting temperature and time, respectively. 25% excess coal addition in prereduction stage was reported to be crucial to obtain the desired Ni content in the final product. Colemanite in calcined form has long been known as a flux used in pyrometallurgical systems such as steelmaking and copper matte-smelting. To investigate the effects of calcined colemanite addition on the ferronickel metal-slag system, calcined colemanite of 2% and 4% of the total metal and slag weight was charged as a flux and smelted under the optimum conditions described above.
Description
Eray, Said/0000-0001-7310-9726; TOPKAYA, YAVUZ/0009-0009-3671-3655
Keywords
Smelting, Laterite, Ferronickel
Turkish CoHE Thesis Center URL
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Citation
1
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Source
4th International Symposium on High-Temperature Metallurgical Processing held during the 142nd TMS Annual Meeting and Exhibition -- MAR 03-07, 2013 -- San Antonio, TX
Volume
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Start Page
453
End Page
460