Oxidation of synthetic nickel mattes under simulated flash smelting conditions

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

*Tämän työn vastaava kirjoittaja

    Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionScientificvertaisarvioitu

    Abstrakti

    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.

    AlkuperäiskieliEnglanti
    OtsikkoEPD Congress 1996
    ToimittajatRay Y. Lin, Y.Austin Chang, Ramana G. Reddy, C.T. Liu
    Sivut53-61
    Sivumäärä9
    TilaJulkaistu - 1996
    OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
    TapahtumaTMS Annual Meeting and Exhibition - Anaheim, Yhdysvallat
    Kesto: 4 helmikuuta 19968 helmikuuta 1996
    Konferenssinumero: 125

    Conference

    ConferenceTMS Annual Meeting and Exhibition
    MaaYhdysvallat
    KaupunkiAnaheim
    Ajanjakso04/02/199608/02/1996

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