About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Thermodynamics for Sustainability: An EPD Symposium in Honor of Kazuki Morita
|
| Presentation Title |
Distribution and separation behavior of arsenic between CaO-based slag and liquid copper |
| Author(s) |
Joohyun Park |
| On-Site Speaker (Planned) |
Joohyun Park |
| Abstract Scope |
The elution of arsenic (As) has caused various problems such as soil/water contamination and adverse health effects. The removal and stabilization of arsenic using slag at high temperatures is a focus of the present study. To determine the effects of slag basicity and oxygen potential on the distribution of As between slag and liquid copper, high-temperature experiments were conducted. The thermodynamic driving force of As removal from liquid copper was found to increase as the slag basicity increased. The addition of a small amount of Na2O improved As removal efficiency from the liquid copper. Hence, the basicity of slag should be carefully controlled for the efficient removal of As. In addition, As was segregated and stabilized in the (Mg,Fe)O monoxide as well as in Mg3(AsO4)2 and FeAsO4 in the slag, from which it was concluded that As enrichment and separation can be achieved during cooling process. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Copper / Nickel / Cobalt, Extraction and Processing, Recycling and Secondary Recovery |