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Title: NaOH-assisted direct reduction of Ring of Fire chromite ores, and the associated implications for processing

Abstract

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.

Authors:
 [1];  [1];  [2]
  1. Canmet Mining (Canada)
  2. Metallurgical Process Consultants Ltd (Canada)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Univ. of Washington, Seattle, WA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1491196
Grant/Contract Number:  
W-31-109-Eng-38; FG03-97ER45628
Resource Type:
Accepted Manuscript
Journal Name:
Journal of the Southern African Institute of Mining and Metallurgy
Additional Journal Information:
Journal Volume: 118; Journal Issue: 6; Journal ID: ISSN 2225-6253
Publisher:
SciELO
Country of Publication:
United States
Language:
ENGLISH
Subject:
58 GEOSCIENCES; chromite; ferrochrome; prereduction; direct reduction; catalysts; Ring of Fire

Citation Formats

Sokhanvaran, S., Paktunc, D., and Barnes, A. NaOH-assisted direct reduction of Ring of Fire chromite ores, and the associated implications for processing. United States: N. p., 2018. Web. https://doi.org/10.17159/2411-9717/2018/v118n6a4.
Sokhanvaran, S., Paktunc, D., & Barnes, A. NaOH-assisted direct reduction of Ring of Fire chromite ores, and the associated implications for processing. United States. https://doi.org/10.17159/2411-9717/2018/v118n6a4
Sokhanvaran, S., Paktunc, D., and Barnes, A. Fri . "NaOH-assisted direct reduction of Ring of Fire chromite ores, and the associated implications for processing". United States. https://doi.org/10.17159/2411-9717/2018/v118n6a4. https://www.osti.gov/servlets/purl/1491196.
@article{osti_1491196,
title = {NaOH-assisted direct reduction of Ring of Fire chromite ores, and the associated implications for processing},
author = {Sokhanvaran, S. and Paktunc, D. and Barnes, A.},
abstractNote = {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.},
doi = {10.17159/2411-9717/2018/v118n6a4},
journal = {Journal of the Southern African Institute of Mining and Metallurgy},
number = 6,
volume = 118,
place = {United States},
year = {2018},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

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Cited by: 1 work
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Figures / Tables:

Figure 1 Figure 1: Thermogravimetric analysis (ore:graphite approx. 100:22)

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