|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Aluminum Reduction Technology
||SPL Recycling and Re-Processing
||Victor Mann, Vitalii Pingin, Aleksey Zherdev, Aleksandr Proshkin, Sergey Pavlov, Yurii Bogdanov, Vladimir Somov
|On-Site Speaker (Planned)
Aluminum smelters generate a considerable amount of SPL, which results from the chemical and mechanical degradation of carbon, refractory and insulating materials, which are used to isolate a high-temperature and chemically aggressive process of electrolysis. The specific amount of generated SPL is 25-40 kg/t Al, and it depends on the life of the cell, which varies from 5 to 7+ years. Besides considerable expenses for cell relining, SPL has a negative impact on the environment due to fluorine compounds and cyanides, which SPL contains. There are two most evident ways of minimizing the above negative impact from SPL: a decrease in the amount of SPL, and SPL re-processing, including SPL neutralization and the production of sub-products, such as fluorine, carbon and aluminosilicates, which can either be used in-house or sold to third parties. This paper covers RUSAL’s efforts aimed at developing and implementing a technology to recycle and re-process SPL.
||Planned: Light Metals