Co-Ni concentrates whose major phase components are pentlandite (Ni,Fe,Me)9S8, linneite Co3S4, polydymite Ni3S4, and siegenite NiCo2S4 were subjected to oxidation with atmospheric oxygen under the conditions of nonisothermal and isothermal heating in the interval 20–900°C. The process was studied by differential thermal, X-ray phase, and chemical analysis. The reaction schemes based on the data obtained were suggested, and the optimal temperature interval of low-temperature sulfatizing roasting of Co-Ni thiosphinels was chosen.
Russian Journal of Applied Chemistry – Springer Journals
Published: Apr 17, 2013
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