Recycling of Alumina Power After Plasma Spraying

Recycling of Alumina Power After Plasma Spraying

The possible reuse of powder Al 2 O 3 waste formed in manufacturing of ceramic refractory products by plasma spraying was studied. The powder alumina waste was found to be individual particles α- and γ-Al 2 O 3 and their conglomerates and also included iron oxides in the form of Fe 2 O 3 and Fe 3 O...

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Bibliographic Details
Published in:Refractories and industrial ceramics 2020-07, Vol.61 (2), p.196-199
Main Authors: Stepnov, A. V., Belyaev, I. V., Bazhenov, V. E., Pavlov, A. A., Kireev, A. V.
Format: Article
Language:eng
Subjects:
Aluminum oxide
Ceramic powders
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Coatings
Composites
Glass
Iron oxides
Magnetic separation
Materials Science
Natural Materials
Plasma
Plasma spraying
Powder spraying
Powders
Transitional aluminas
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Summary:The possible reuse of powder Al 2 O 3 waste formed in manufacturing of ceramic refractory products by plasma spraying was studied. The powder alumina waste was found to be individual particles α- and γ-Al 2 O 3 and their conglomerates and also included iron oxides in the form of Fe 2 O 3 and Fe 3 O 4 . It was shown that the plasma-spraying powder waste had to be purified of Al 2 O 3 conglomerates and iron oxides in order to reuse it. For this purpose, powder waste should be sifted through a sieve and subjected to magnetic separation. It was established experimentally that such a powder can be reused for applying coatings and fabricating products by plasma spraying without degrading their quality
ISSN:1083-4877
1573-9139