Phase Equilibrium between Ni-S Melt and FeO<SUB>X</SUB>-SiO<SUB>2</SUB> or FeO<SUB>X</SUB>-CaO Based Slag under Controlled Partial Pressures

DOI Web Site Web Site 2 Citations 26 References
  • Henao Hector M.
    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
  • Hino Mitsuhisa
    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
  • Itagaki Kimio
    Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

Bibliographic Information

Other Title
  • Phase Equilibrium between Ni-S Melt and FeOx-SiO2 or FeOx-CaO Based Slag under Controlled Partial Pressures

Search this article

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 pSO<SUB>2</SUB> of 10.1 kPa and pO<SUB>2</SUB> 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 pO<SUB>2</SUB> 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.

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 43 (9), 2219-2227, 2002

    The Japan Institute of Metals and Materials

Citations (2)*help

See more

References(26)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top