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Vol.18, No.6, 534 ~ 543, 1980
Title
A Study on the Reduction of Caprous Sulfide by Hydrogen Gas in the Presence of CaO
윤종규Jong Kyu Yoon, 허태녕Tae young Huh
Abstract
A study on the direct reduction of Cuprous Sulfide by Hydrogen gas in the presence of CaO was investigated in the temperature range of the 500℃ to 1,000℃. Under the constant velocity of hydrogen gas, experiments were carried out isothermally and Sulfur Elimination Percent was determined by quantitative sulfur analysis. The effects of reaction temperature, time, and ratio of CaO/Cu₂S were studied. In all cases reduction reactions were carried rapidly in the initial stage and after that reaction rates were decreased gradually. The effects of additives-Na₂O₃ and NaF-were explained by the rapid increasing of the initial reaction rates but the mechanism of that will be studied more. The activation energy of reduction process of the system was found to be 4.44Kcal/mole and the rate constant could be expressed by the following equation K=80.31 exp (-4440/RT).
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