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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium The Science of Melt Refining: An LMD Symposium in Honor of Christian Simensen and Thorvald Abel Engh
Presentation Title Results of Trials with a Multi Stage Filtration System Employing a Cyclone
Author(s) John H Courtenay, Marcel Rosefort
On-Site Speaker (Planned) John H Courtenay
Abstract Scope The development of a multi stage filter comprising a ceramic foam filter applied in a first chamber operating in cake mode; grain refiner added in a second chamber and a cyclone deployed in a final chamber was presented at TMS 2014. The first industrial prototype was installed at Trimet Aluminium at Essen in Germany on a sow casting station and demonstrated that liquid metal could pass through the cyclone successfully without splash or turbulence. In 2016 new trials were undertaken on the Research Casting pit casting from a 5t tilting furnace. A satisfactory start up was achieved and steady state flow at a rate of 4-8t/hr was maintained over 60 minutes. Three pairs of before and after filter Podfa samples were collected to assess metal cleanliness and the analysis of these results is presented.
Proceedings Inclusion? Planned: Light Metals


A Holistic Approach to Molten Metal Cleanliness
Developments in Inclusion Removal Technology
Effects of 2 ppm Beryllium on the Oxidation of a 5XXX Aluminum Alloy at Temperatures between 500 C and 750 C
Modelling of Hydrogen Removal in Gas Fluxing of Molten Aluminium
Overview of Ultrasonic Degassing Development
Oxide Skin Strength on Molten AA5XXX Aluminum Alloy – Effect of Beryllium and Alternatives
Results of Trials with a Multi Stage Filtration System Employing a Cyclone
The Contributions of Thorvald Engh and Christian Simensen to the Science of Melt Refining
The Fundamentals of Forming Microbubbles in Liquid Metal Systems
The Use of Nitrogen to Degas Molten Aluminium - Comparison of Metallurgical Results with Argon and Nitrogen Used in an ACD™
Understanding of Interactions between Pyrolysis Gases and Liquid Aluminum and Their Impact on Dross Formation

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