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http://dx.doi.org/10.7844/kirr.2014.23.1.33

Copper Solubility in Al2O3-CaO-SiO2-MgO Slag  

Han, Bo-Ram (Department of Materials Science and Metallurgical Engineering, Kyungpook National University)
Kim, Eung-Jin (Department of Materials Science and Metallurgical Engineering, Kyungpook National University)
Sohn, Ho-Sang (Department of Materials Science and Metallurgical Engineering, Kyungpook National University)
Publication Information
Resources Recycling / v.23, no.1, 2014 , pp. 33-39 More about this Journal
Abstract
In this study, the solubility of Cu, which is a main metal component of wasted PCB, in $CaO-SiO_2-Al_2O_3-MgO$ slag system was investigated. Each 20 grams of Cu chips and the quaternary slag manufactured was placed in an carbon crucible and melted for 10 hours in the temperature between 1673 K and 1825 K to confirm the equilibrium state. The oxygen partial pressure was controlled by the ratio of CO and Ar gas in the range of $10^{-17.23}$ to $10^{-15.83}$ atm. The concentration of Cu in the slag increased with increasing oxygen partial pressure, slag basicity, and MgO content in the slag. The concentration of Cu in the slag decreased with increasing temperature. The Cu dissolution reaction in the slag is an exothermic reaction.
Keywords
Copper; Slag; Basicity; Solubility; PCB;
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Times Cited By KSCI : 1  (Citation Analysis)
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