Oxidation of synthetic nickel mattes under simulated flash smelting conditions

Satu Jyrkonen*, Ari Jokilaakso, Mira Nopanen, Esa Peuraniemi, Satu Stromberg

*Corresponding author for this work

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

    Abstract

    A single-particle laminar-flow technique was used to study oxidation of four synthetic nickel mattes, which were screened into three size fractions. Experimental conditions were: reaction gas from N 2 + 21 to 75 vol-% O 2; gas preheating temperatures ranging from 500 to 1100°C. The four mattes were synthesized so that Ni/Cu ratios of 1 and 10 were obtained with high and low iron contents. Chemical analysis of the particles was used to determine the oxidation degree of the materials, and optical and scanning electron microscopy were used to detect their morphology, internal composition and structure. The best sulfur removal from the synthetic nickel mattes was achieved under the most oxidizing conditions with the finest size fraction. The matte with Ni/Cu = 1 and high iron content was found to be most reactive. The least reactive matte was with Ni/Cu = 10 and low iron content; the coarse fraction particles did not react at all under the conditions studied.

    Original languageEnglish
    Title of host publicationEPD Congress 1996
    EditorsRay Y. Lin, Y.Austin Chang, Ramana G. Reddy, C.T. Liu
    Pages53-61
    Number of pages9
    Publication statusPublished - 1996
    MoE publication typeA4 Article in a conference publication
    EventTMS Annual Meeting and Exhibition - Anaheim, United States
    Duration: 4 Feb 19968 Feb 1996
    Conference number: 125

    Conference

    ConferenceTMS Annual Meeting and Exhibition
    CountryUnited States
    CityAnaheim
    Period04/02/199608/02/1996

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