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research-article

The behaviour of corundum ceramic in molten salt

[+] Author and Article Information
Vojtech Galek

Department of Nuclear fuel cycle, Research Centre Řež, Hlavní 130, Husinec-Řež CZ 250 68, Czech Republic
vojtech.galek@cvrez.cz

Jaroslav Stoklasa

Department of Nuclear fuel cycle, Research Centre Řež, Hlavní 130, Husinec-Řež CZ 250 68, Czech Republic
jroslav.stoklasa@cvrez.cz

Jan Hadrava

Department of Nuclear fuel cycle, Research Centre Řež, Hlavní 130, Husinec-Řež CZ 250 68, Czech Republic
jan.hadrava@cvrez.cz

Jan Hrbek

Department of Nuclear fuel cycle, Research Centre Řež, Hlavní 130, Husinec-Řež CZ 250 68, Czech Republic
jan.hrbek@cvrez.cz

Petr Bezdicka

Institute of Inorganic Chemistry of the Czech Academy of Sciences, PN 1001, Hlavní 130, Husinec-Řež CZ 250 68, Czech Republic
petrb@iic.cas.cz

Ivona Sedlárová

Department of Inorganic Technology, Faculty of Chemical Technology, University of Chemistry and Technology Prague, Technická 5, Prague 6 CZ 166 28, Czech Republic
ivona.sedlarova@vscht.cz

1Corresponding author.

ASME doi:10.1115/1.4042359 History: Received July 31, 2018; Revised December 07, 2018

Abstract

The technology of Molten Salt Oxidation (MSO) is a thermal treatment process mainly used for reprocessing of hazardous organic waste. This technology is considered as an alternative to the conventional incineration processes. The principle of the whole technology is based on flameless oxidation of materials in the molten salt with the consequent capture of gaseous products in molten alkaline salts. The melts with low melting point and high viscosity, such as a ternary mixture of carbonates Na2CO3, K2CO3 a Li2CO3, are the most used in this technology. However, the molten salts create a very corrosive environment for metal and ceramic materials, so the main aim of this experimental work was to determine the resistance of corundum samples, which were prepared by plasma spraying, and to find out its potential use as the protection of the reactor metal surface.

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