Author/Authors :
VAHDATI KHAKI, JALIL iran university of science and technology - Department of Metallurgy and Materials Engineering, تهران, ايران , HADJI SOLEIMANI, SALMAN iran university of science and technology - Department of Metallurgy and Materials Engineering, تهران, ايران , MOOSAVI NEJAD, MOHSEN ferdowsi university of mashhad - Department of Materials and Metallurgy, مشهد, ايران
Abstract :
The direct reduction of copper sulfide concentrate from Iranian Sarcheshme deposits with carbon in the presence oflime was investigated in the temperature range of800-1000 DC. The reduction kinetics was determined by means of weight loss measurements. It was found that the rate of reaction increased considerably with increasing the temperature. The kinetics was also improved when large excesses of lime and carbon were present in the mixture. The effects of catalytic additives of Na2CD3 and K2CD3 were also investigated. It was realized that the rate of reaction increased by higher concentrations of additives. X-ray diffraction analysis of reduced samples revealed that sulfur was fixed as solid CaS, and metallic copper wasformed.
