Effect of basicity and ferro-silicon addition matte formation from Ge-copper bearing slag

Junior Ngoie Kayembe, Michel Kalenga Wa Kalenga, Didier Kasongo Nyembwe

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)

Abstract

Through addition of basic oxides, the increase of basicity of multicomponent silicate slags leads to breaking a silicate network and enhances the recovery of valuable metals. In this study, an acidic copper slag containing Cu, Co, Ge, Fe and Zn was used to produce matte for base metal recovery. XRF, XRD and SEM-EDS were used for characterization. CaSO 4 was used as Sulphur provider and for basicity change. FeSi was added to enhance the diffusion of Ge from the slag. The sample was placed in a graphite crucible with carbon added to favor reduction and limit the reactivity of the crucible. CO was blown to favor reduction for easy matte formation. A tube furnace was used for the experiments and was set at 1400 °C as working temperature. Preliminary results have confirmed the formation of matte with Fe, Cu present in the matte with low Ge content with no zinc present.

Original languageEnglish
Title of host publicationMaterials Science and Technology 2018, MS and T 2018
PublisherAssociation for Iron and Steel Technology, AISTECH
Pages1125-1131
Number of pages7
ISBN (Electronic)0873397681, 9780873397681
DOIs
Publication statusPublished - 2019
EventMaterials Science and Technology 2018, MS and T 2018 - Columbus, United States
Duration: 14 Oct 201818 Oct 2018

Publication series

NameMaterials Science and Technology 2018, MS and T 2018

Conference

ConferenceMaterials Science and Technology 2018, MS and T 2018
Country/TerritoryUnited States
CityColumbus
Period14/10/1818/10/18

Keywords

  • Basicity
  • Matte
  • Sulfurization

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Mechanics of Materials
  • Materials Science (miscellaneous)

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