Phase Equilibrium between Ni-S Melt and FeOX-SiO2 or FeOX-CaO Based Slag under Controlled Partial Pressures

Henao, Hector M., Hino, Mitsuhisa and Itagaki, Kimio (2002) Phase Equilibrium between Ni-S Melt and FeOX-SiO2 or FeOX-CaO Based Slag under Controlled Partial Pressures. Materials Transactions, 43 9: 2219-2227. doi:10.2320/matertrans.43.2219


Author Henao, Hector M.
Hino, Mitsuhisa
Itagaki, Kimio
Title Phase Equilibrium between Ni-S Melt and FeOX-SiO2 or FeOX-CaO Based Slag under Controlled Partial Pressures
Formatted title
Phase Equilibrium between Ni-S Melt and FeOX-SiO2 or FeOX-CaO Based Slag under Controlled Partial Pressures
Journal name Materials Transactions   Check publisher's open access policy
ISSN 1347-5320
1345-9678
Publication date 2002-01-01
Sub-type Article (original research)
DOI 10.2320/matertrans.43.2219
Open Access Status
Volume 43
Issue 9
Start page 2219
End page 2227
Total pages 9
Place of publication Sendai, Japan
Publisher The Japan Institute of Metals (JIM)
Language eng
Subject 091407 Pyrometallurgy
Formatted 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 alloy and the FeOX-SiO2 or FeOX-CaO based slag in a magnesia crucible at 1773 K under controlled pSO2 of 10.1 kPa and pO2 in a range between 5.1× 10-3 and 1.6 Pa by using CO-CO2-SO2 gas mixtures. The solubility of nickel in these slags at pO2 of 1.6 Pa, above which precipitation of a FeOX-NiO solid solution was anticipated, was found to be 10.1 and 20.3 mass% for the FeOX-SiO2 and FeOX-CaO based slags, respectively. The contents of iron, sulfur and oxygen in the nickel melt equilibrated with these slags were 2, 3 and 0.5 mass% for the FeOX-SiO2 based slag and 1, 3 and 0.5 mass% for the FeOX-CaO based slag, respectively. The dissolutions of nickel and sulfur in the slags were discussed on the basis of distribution ratio and sulfide capacity, respectively
Keyword phase equilibrium
distribution ratio
activity coefficient
FeOX-SiO2 slag
FeOX-CaO slag
nickel matte
nickel converting
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

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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