발간논문

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Vol.27, No.6, 546 ~ 556, 1989
Title
A Study on Deoxidation by Reducing Gas and injection Method in fire Refining of cu
박형규H . K . Park, 윤종규J . K . Yoon
Abstract
Deoxidation of Cu by injection of butane as reducing gas instead of conventional green wood was studied through small scaled hot model experiment together with KOH-CO₂water mode1 experiment. Deoxidationin by butane was compared with green wood deoxidation and the rate of deoxidation of Cu was interpreted on the basis of gas absorption theory. According to hot model experiments, the effect of butane on deoxidation was excellent and the deoxidation of Cu was a very rapid reaction. It was found that the rate of overall reaction increased with increasing gas flow rate. The effects of various injection methods of gas on liquid-phase mass transfer were investigated through water model experiments based on the gas absorption theory to obtain basic information on reactor design in Cu refining. According to the results obtained in this study, cylindrical vessel and bottom blowing were effective in batch operation. Injection by single nozzle was more effective than that by multiple nozzles, and small size nozzle and increased flow rate also increased reaction rate.
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