NaOH-assisted direct reduction of Ring of Fire chromite ores, and the associated implications for processing
- Canmet Mining (Canada)
- Metallurgical Process Consultants Ltd (Canada)
As part of a broader programme to fully characterize the chromite ores discovered in the 'Ring of Fire' region of northern Ontario, NRCan and private research facilities in Canada have performed extensive test work over the past six years. The studies focused on developing alternative approaches for producing ferrochrome at lower temperatures and with fewer greenhouse gas emissions. The use of various fluxes or catalysts for accelerated direct reduction had yielded promising results, particularly with caustic soda (NaOH). Here, the initial work had been protected by a patent known as the 'KWG process'. The most recent work by NRCan has confirmed that the addition of NaOH to chromite ores in carefully controlled amounts leads to high degrees of metallization at much lower temperatures than would be achieved by conventional smelting technologies, at greatly accelerated reactions rates.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Univ. of Washington, Seattle, WA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- W-31-109-Eng-38; FG03-97ER45628
- OSTI ID:
- 1491196
- Journal Information:
- Journal of the Southern African Institute of Mining and Metallurgy, Vol. 118, Issue 6; ISSN 2225-6253
- Publisher:
- SciELOCopyright Statement
- Country of Publication:
- United States
- Language:
- ENGLISH
Web of Science
Influences of alkali fluxes on direct reduction of chromite for ferrochrome production
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journal | January 2018 |
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