Research on Selective Reduction of Laterite Nickel Ore by CO2/H2 Mixed Gas

Song Chen; Shu Qiang Guo; Yu Ling Xu; Lan Jiang; Wei Zhong Ding

doi:10.4028/www.scientific.net/AMR.1025-1026.814

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1025-1026Research on Selective Reduction of Laterite Nickel...

Research on Selective Reduction of Laterite Nickel Ore by CO₂/H₂Mixed Gas

Abstract:

In this paper, thermodynamic analysis on reduction of lateritic nickel ore by CO₂/H₂ mixed gas was performed based on activity theory. Effects of CO₂/H₂ ratio and temperature on selective reduction of laterite ore were investigated. The calculation result shows that the metallization of Fe and Ni could be promoted by each other because of the variation of the Fe and Ni activity, which accounts for the inescapability of Fe metallization. When laterite nickel ore was reduced by mixed gas with a CO₂/H₂ratio of 9/1 and a gas flow of 100mL/min at 800°C for 1h, a product with a Ni metallization rate over 95% and a Ni/Fe ratio as much as 2.6 was prepared.

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Periodical:

Advanced Materials Research (Volumes 1025-1026)

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814-819

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1025-1026.814

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Online since:

September 2014

Authors:

Song Chen*, Shu Qiang Guo, Yu Ling Xu, Lan Jiang, Wei Zhong Ding

Keywords:

CO₂/H₂mixed Gas, Laterite Nickel Ore, Selective Reduction

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