Gypsum formation in the CaO-FeOx-Cu2O slags at copper saturation

Katsunori Yamaguchi, Shinichi Sato, Fumito Tanaka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Continuous converting of copper matte using calcium ferrite slag of the CaO-FeOx-Cu2O system is an attractive technology for copper converting. This slag sometimes tends to separate out gypsum under a high oxygen potential required to produce blister copper. Experiments have been carried out to determine the precipitation of CaSO4 in the CaO-FeO x-Cu2O slag with equilibrating with molten copper under the SO 2 partial pressures of 0.2, 0.4, 0.6 and 1.0 atm at temperature range from 1473 to 1573K. The results have revealed that CaSO4 tends to precipitate from slag when the temperature lowers, the CaO content increases, the SO2 pressure increases, or blister copper is oxidized excessively.

Original languageEnglish
Title of host publicationThe Minerals, Metals and Materials Society - 3rd International Conference on Processing Materials for Properties 2008, PMP III
Pages531-540
Number of pages10
Publication statusPublished - 2009 Dec 1
Externally publishedYes
Event3rd International Conference on Processing Materials for Properties 2008, PMP III - Bangkok, Thailand
Duration: 2008 Dec 72008 Dec 10

Publication series

NameThe Minerals, Metals and Materials Society - 3rd International Conference on Processing Materials for Properties 2008, PMP III
Volume1

Conference

Conference3rd International Conference on Processing Materials for Properties 2008, PMP III
CountryThailand
CityBangkok
Period08/12/708/12/10

Keywords

  • Calcium ferrite slag
  • Continuous converting process
  • Gypsum separation

ASJC Scopus subject areas

  • Materials Science(all)

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  • Cite this

    Yamaguchi, K., Sato, S., & Tanaka, F. (2009). Gypsum formation in the CaO-FeOx-Cu2O slags at copper saturation. In The Minerals, Metals and Materials Society - 3rd International Conference on Processing Materials for Properties 2008, PMP III (pp. 531-540). (The Minerals, Metals and Materials Society - 3rd International Conference on Processing Materials for Properties 2008, PMP III; Vol. 1).