Application of an improved testing device for the study of alumina dissolution in silicate slag

Publikation: Beitrag in FachzeitschriftArtikelForschungBegutachtung

Abstract

This study entailed a dissolution study of alumina fine ceramics in a CaO–Al2O3–SiO2–MgO silicate slag system with a CaO/SiO2 weight ratio of 0.65. Finger-test experiments with several corrosion steps were carried out in a contemporary continuous wear testing device at 1450, 1500, and 1550 °C with 200 rpm. The corroded sample profiles were measured using a high-resolution laser scanner, and the processed measurement data were used to extract the dissolution parameters (i.e. corroded volume, surface area, mean radius, tip radius and immersion length). The diffusivity determination method using Sherwood relations was developed for the dynamic finger-test setup. The diffusivities for all corrosion steps were determined from these dissolution parameters, and those obtained from the Sherwood relations were compared with the ones received by a simulation approach that includes deviations from the cylindrical shape. The results obtained using Sherwood relations are sufficiently accurate in several cases.
OriginalspracheEnglisch
Seiten (von - bis)3652-3659
Seitenumfang8
FachzeitschriftJournal of the European Ceramic Society
Jahrgang42.2022
Ausgabenummer8
DOIs
PublikationsstatusVeröffentlicht - 2 März 2022

Bibliographische Notiz

Funding Information:
The authors gratefully acknowledge the financial support under the scope of the COMET program within the K2 Center “Integrated Computational Material, Process and Product Engineering ( IC-MPPE )” (Project No. 859480 ). This program is supported by the Austrian Federal Ministries for Transport, Innovation and Technology ( BMVIT ) and for Digital and Economic Affairs ( BMDW ), represented by the Austrian research funding association ( FFG ), and the Federal States of Styria, Upper Austria and Tyrol . Further guidance of Volkmar Kircher during the experimental procedures is thankfully acknowledged.

Funding Information:
The authors gratefully acknowledge the financial support under the scope of the COMET program within the K2 Center ?Integrated Computational Material, Process and Product Engineering (IC-MPPE)? (Project No. 859480). This program is supported by the Austrian Federal Ministries for Transport, Innovation and Technology (BMVIT) and for Digital and Economic Affairs (BMDW), represented by the Austrian research funding association (FFG), and the Federal States of Styria, Upper Austria and Tyrol. Further guidance of Volkmar Kircher during the experimental procedures is thankfully acknowledged.

Publisher Copyright:
© 2022 The Authors

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