Kinetics of Copper Reduction from Ammoniacal Sulfate Solution by Sulfur Dioxide

以二氧化硫自硫酸銨溶液中還原銅之動力學研究

莊文壽(Wen-Shou Chuang) ； 洪錦雄(Jiin-Shiung Horng) ； 何英礎(Ying-Chu Hoh)

《鑛冶：中國鑛冶工程學會會刊》 32卷1期 (1988/03) Pp. 68-76

https://doi.org/10.30069/MM.198803_32(1).0006

摘要

The reaction kinetics of the reduction of copper from ammoniacal sulfate solution by sulfur dioxide is reported here. Effects of gas flow rate, gas concentration, temperature and copper concentration on Cu^(+2) reduction were studied. Based on the experimental data, the kinetic model epuation can be written as -dC/dt=4.42 C (S)^(1.1) (G)^(1.37) exp (-13,400 / RT) where C in mol dm^(-8) represents cupric ion concentration, S in percentage denotes sulfur dioxide concentration, G in mol h^(-1) denotes gas flow rate and R is the gas constant. The correlation coefficient between the expeimental data and the predicted values is 0.96. Very good agreement between the experimental data and the calculated values is obtained.

並列摘要

本文為探討以二氧化硫自硫酸銨溶液中還原銅的動力，影響銅還原的因素有氣體流量、二氧化硫濃度、溫度及銅離子濃度。由實驗結果，此反應之動力模式方程式如下：-dC / dt = 4.42C（S）^(1.1)（G）^(1.37) exp（-13,400 / RT）C為銅離子濃度（mol dm^(-8)），S為二氧化硫濃度（體積百分比），G為氣體流量（mol h-^(-1)），-13,400 kJ / kg-mol為活化能，R為氣體常數，T為溫度（K）。實驗數據與理論值比較之校正系數為0.96。