Solubility of nickel in slags equilibrated with Ni-S melt

Henao, Hector M., Mitsuhisa, Hino and Itagaki, Kimio (2004) Solubility of nickel in slags equilibrated with Ni-S melt. High-temperature materials and processes, 22 3-4: 187-195. doi:10.1515/HTMP.2003.22.3-4.187

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Author Henao, Hector M.
Mitsuhisa, Hino
Itagaki, Kimio
Title Solubility of nickel in slags equilibrated with Ni-S melt
Journal name High-temperature materials and processes   Check publisher's open access policy
ISSN 0334-6455
Publication date 2004
Sub-type Article (original research)
DOI 10.1515/HTMP.2003.22.3-4.187
Open Access Status File (Publisher version)
Volume 22
Issue 3-4
Start page 187
End page 195
Total pages 9
Place of publication Berlin, Germany
Publisher Walter de Gruyter
Language eng
Abstract To provide thermodynamic data for converting the nickel matte to liquid nickel, an experimental study was conducted in the phase equilibrium between the Ni-S melt and FeOX-SiO2, FeOX-CaO or CaO-Al2O3 based slag melted in a magnesia crucible at 1773 and 1873 K. pSO2 was controlled at 10.1 kPa while pO2 and pS2 ranged between those where NiO precipitated and Ni3S2 formed, respectively. The nickel content in the slag and the sulfur content in the metal at given pO2 and pS2 were smallest for the CaO-Al2O3 based slag. Both decreased with increasing temperature. At 1873 K, the content of nickel in the CaO-Al2O3 based slag at pO2 of 10 Pa (near the precipitation of NiO) was 4%, while the content of sulfur in alloy is 0.4 mass %. Thus, the CaO-Al2O3 base slag at 1873 K would be suitable for direct converting of Ni3S2 to metallic nickel. The distribution behavior of nickel between the slag and the Ni-S melt was discussed based on the concept of oxidic and sulfidic dissolution.
Keyword Experimental study
Slag metal reaction
Phase equilibrium
Phase diagram
Iron oxide
Thermodynamic properties
Molten slag
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Chemical Engineering Publications
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Created: Wed, 08 Apr 2009, 16:00:16 EST by Ms Sarada Rao on behalf of School of Engineering