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2018 | OriginalPaper | Buchkapitel

Preparation of Ferronickel from Nickel Laterite Ore via Semi-molten Reduction Followed by Magnetic Separation

verfasst von : Xueming Lv, Lunwei Wang, Zhixiong You, Jie Dang, Xuewei Lv, Guibao Qiu, Chenguang Bai

Erschienen in: Extraction 2018

Verlag: Springer International Publishing

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Abstract

The rotary kiln-electric furnace (RKEF) process is the main method for producing ferronickel from nickel laterite ore. However, this process is energy intensive as it involves several high temperature steps. Therefore, a novel process is proposed to directly produce ferronickel from nickel laterite ore by semi-molten reduction, which is expected to be realized in a rotary hearth furnace (RHF). The RHF process is able to shorten the flow sheet, decrease the reaction temperature as well as reduce energy consumption. In this study, the influence of basicity on reduction of nickel laterite ore was investigated. The results showed that it is possible to produce the ferronickel nugget directly at 1400 °C when the quaternary basicity [(m_CaO + m_MgO)/(m_SiO2 + m_Al2O3)] was fixed at 0.60. Under this experimental condition, the grade and the recovery ratio of nickel reached 11.53% and 98.59%, and the grade and recovery ratio of Fe were 84.16% and 68.72%, respectively.

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Titel: Preparation of Ferronickel from Nickel Laterite Ore via Semi-molten Reduction Followed by Magnetic Separation
verfasst von: Xueming Lv
Lunwei Wang
Zhixiong You
Jie Dang
Xuewei Lv
Guibao Qiu
Chenguang Bai
Verlag: Springer International Publishing
Buch: Extraction 2018
Print ISBN: 978-3-319-95021-1

Electronic ISBN: 978-3-319-95022-8

Copyright-Jahr: 2018
DOI: https://doi.org/10.1007/978-3-319-95022-8_73

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