PRÁŠIL, Tomáš, Ladislav SOCHA, Karel GRYC, Jana SVIŽELOVÁ, Mariola SATERNUS, Tomasz MERDER, Jacek PIEPRZYCA and Martin GRÁF. Impactof Rotor Design on Its Wear and Work Efficiency ofthe Aluminum Refining Process. Metals. SWITZERLAND: MDPI, vol. 12, No 11, p. 2-14. ISSN 2075-4701. 2022.
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Basic information
Original name Impactof Rotor Design on Its Wear and Work Efficiency ofthe Aluminum Refining Process
Authors PRÁŠIL, Tomáš (203 Czech Republic, guarantor), Ladislav SOCHA (203 Czech Republic, belonging to the institution), Karel GRYC (203 Czech Republic, belonging to the institution), Jana SVIŽELOVÁ (203 Czech Republic, belonging to the institution), Mariola SATERNUS (616 Poland), Tomasz MERDER (616 Poland), Jacek PIEPRZYCA (616 Poland) and Martin GRÁF (203 Czech Republic).
Edition Metals, SWITZERLAND, MDPI, 2022, 2075-4701.
Other information
Original language English
Type of outcome Article in a journal
Field of Study 20500 2.5 Materials engineering
Country of publisher Switzerland
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/75081431:_____/22:00002312
Organization unit Institute of Technology and Business in České Budějovice
UT WoS 000881167400001
Keywords in English aluminum refining; graphite rotor; wear testing; 3D scanning; Dross Test
Tags RIV22, WOS
Links TH04010449, research and development project.
Changed by Changed by: Barbora Kroupová, učo 25655. Changed: 21/3/2023 13:31.
Abstract
Both the wear and the geometry of the rotor determine the efficiency of the processof aluminum refining. The paper presents wear tests of two different rotors: I (pump type) and II (pro-peller type). The operation of both rotors in industrial conditions was compared and their service life was examined.It was found that rotor I is more durable than the tested rotor II, and at the same time it provides a good level of hydrogen removal throughout the operation period, i.e.,1112 refin-ing cycles. Rotor wear after refining was calculated by 3D scanning. The study also investigated the impact of rotor geometry on the efficiency of the refining process. The degassing efficiency was determined during refining in a foundry using the Dichte Index (DI). The alloy density and the volume of hydrogen removed were also tested for five stages of rotor wear: 0%, 25%, 50%, 75% and 100%. Both new rotors performed worse in removing hydrogen from the liquid alloy than the worn rotors due totheir humidity which cannot be eliminated in the initial stage of their operation. A Dross Test was also performed to determine non-metallic impuritiesand comparesize and number of cavities for rotor I and II.The best results of removing non-metallic inclusions by flotation were obtained for rotorIat the end of its operation.
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