Study on Suitable Slag Type of Nickel Ausmelt Smelting Process
Received:August 27, 2012   Revised:August 27, 2012   Accepted:August 30, 2012      Published Online:February 19, 2013
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DOI:10.3969/j.issn.1007-7545.2013.03.003
KeyWord:nickel concentrate; slag type; Ausmelt smelting; melting temperature; MgO
        
AuthorInstitution
SHI Wei-chang 昆明理工大学 冶金与能源工程学院 昆明
SHEN Qiang-hua 昆明理工大学 冶金与能源工程学院 昆明
CHEN Wen 昆明理工大学 冶金与能源工程学院 昆明
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Abstract:
      The discarded slag of Jinchuan electric settling furnace (ESF) contains high content valuable metal with high melting temperature. The main form of nickel and copper loss in slag is manifested through SEM-EDS and XRD. The melting temperature of semi-synthetic slag, basically Ausmelt smelting slag, was measured. The effects of Fe/SiO2 ratio and CaO content on melting temperature of semi-synthetic slag were investigated. The results show that the melting temperature of slag declines significantly when Fe/SiO2 ratio is 0.9~1.0 and CaO content is 6%~10%. The results can provide optimized process parameters for Jinchuna nickel Ausmelt smelting.
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