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- W2093508199 abstract "AbstractThe direct reduction of cuprous sulphide with carbon and lime was investigated in the temperature range 850–1010°C. The reduction kinetics were determined by means of a thermogravimetric apparatus. The kinetics are considerably improved when large excesses of lime and carbon are present in the Cu2S/CaO/C mixture. The composition Cu2S:4CaO:4C seemed to be the optimum and accordingly received the most careful scrutiny. The effects of catalytic additives like K2CO3, Li2CO3, Na2CO3, NaF, Na2SO3, and ternary (K, Li,Na) 2CO3 eutectic were thoroughly investigated. Potassium carbonate, sodium fluoride, and the ternary appear to be the best catalysts for the direct reduction process. The relationship between catalyst concentration and catalytic activity was determined for the K2CO3 catalyst. Higher concentrations favor faster rates but there is a greater likelihood of catalyst-loss from the reaction mixture during the course of the reduction process. X-ray diffraction analysis of partially-reacted samples ..." @default.
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- W2093508199 date "1985-01-01" @default.
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- W2093508199 title "Direct Reduction of Copper Sulphide with Carbon in the Presence of Lime" @default.
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- W2093508199 doi "https://doi.org/10.1179/cmq.1985.24.1.69" @default.
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