Recovering selenium from copper refinery slimes
- Cite this article as:
- Hyvärinen, O., Lindroos, L. & Yllö, E. JOM (1989) 41: 42. doi:10.1007/BF03220271
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The selenium contained within copper refinery slimes may be recovered advantageously by roasting at about 600°C. While roasting in air is inefficient, roasting in a sulfating atmosphere enables practically complete selenium recovery. Based on laboratory tests, a new selenium recovery process was adopted at Outokumpu Copper Refinery. In this process, sulfation is achieved by feeding sulfur dioxide and oxygen into the roasting furnace.