|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Cast Shop Technology: Recycling and Sustainability Joint Session
||Recycling of Oxide from Dross into Aluminum Electrolysis Cells
||Martin Syvertsen, Bjarte Øye
|On-Site Speaker (Planned)
Today aluminium dross is normally recycled by melting it in a gas fired rotary furnace. Salt is partly used for protection against oxidation of aluminium metal and partly to enhance agglomeration of molten aluminium drops by breaking the oxide layers between them. The separated aluminium metal is then either retuned to the supplier of the dross, or sold to another costumer. The oxide on the other hand is mixed with salt and has to be further processed before sold as a low grade oxide.
This paper describes how aluminum metal and oxide is separated in a plasma heated rotary furnace without the use of salt. The oxide has been characterized with respect to chemical purity physical properties, and has been tested for use in the electrolysis cells. The results show that addition of oxide form dross does not affect the cells performance significantly.
||Planned: Light Metals