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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 Developments in Inclusion Removal Technology
Author(s) John F. Grandfield
On-Site Speaker (Planned) John F. Grandfield
Abstract Scope This paper reviews the past, present and possible future of molten aluminium inclusion removal technology. Filtration technology is far from a stagnant field. Methods used to remove inclusions from the melt are selected on the basis of the product requirements, operating and capital costs of the method, ease of use and reliability of the method. The basic principles of inclusion removal for settling, floatation and filtration are reviewed along with an overview of current typical practice. New developments such as cyclones, MHD priming, vacuum assisted filtration and combo filters are described. Some ideas that have fallen by the wayside like “sticky” filters and use of Lorentz forces to increase filter efficiency are re-examined. The potential for new filter structures utilising 3D printing methods to achieve high efficiency at low head loss is highlighted.
Proceedings Inclusion? Planned: Light Metals

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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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