Advanced Compact Filtration (ACF): An Efficient and Flexible Filtration Process
Deep bed filters are well known not only for providing efficient inclusion removal that is required for critical products, but also for their relatively high metal hold-up. In multi-alloy casthouses, filtration costs associated with deep bed filters can be considerable due to filter media replacement and scrap metal generation at alloy changes. This paper describes the key components of a new metal filtration technology, the Advanced Compact Filter (ACF) developed and industrialized by Rio Tinto Alcan (RTA). The ACF provides flexible, efficient and robust filtration suited for large product mix environments. This technology was successfully demonstrated on critical products, and is now fully implemented and operated in one Rio Tinto Alcan casthouse. This paper also presents the main benefits for cost reduction provided by this technology.
KeywordsAluminum Processing In-Line Treatment Filtration
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