Journal Published Online: 06 November 2023
Volume 12, Issue 1

Alternative Industrial Chrome-Free Alumina-Based Bricks for Copper Alloy Melting Furnaces

CODEN: MPCACD

Abstract

In this study, the corrosion resistance of alumina-based bricks against the slag of copper alloy melting furnaces was investigated. Four commercial chrome-free alumina bricks have been studied. Bulk density and apparent porosity measurements and phase analysis of the bricks were performed. The most important property, the slag corrosion resistance, was evaluated at the temperature of 1,200°C for 2 h. The microstructures of the bricks, their penetration depth, and corrosion index were evaluated. The results showed that two bricks showed acceptable corrosion resistance against the slag. The low corrosion index of these bricks was attributed to their aluminosilicate phases (sillimanite, or andalusite) and lower phosphate bonding; however, the problematic matter was the silicate phase, which showed lower resistance against the penetration of slag. It was observed that the aluminosilicate phase can improve the corrosion resistance through the reaction with slag, whereas the presence of large alumina aggregates can restrict the penetration of slag.

Author Information

Majidian, Hudsa
Department of Ceramic, Materials and Energy Research Center, Karaj, Iran
Nikzad, Leila
Department of Ceramic, Materials and Energy Research Center, Karaj, Iran
Hamzavi Taleghani, Sheida
Department of Ceramic, Materials and Energy Research Center, Karaj, Iran
Farvizi, Mohammad
Department of Ceramic, Materials and Energy Research Center, Karaj, Iran
Razavi, Mansour
Department of Ceramic, Materials and Energy Research Center, Karaj, Iran
Faraji, Arash
Department of Ceramic, Materials and Energy Research Center, Karaj, Iran
Pages: 20
Price: $25.00
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Details
Stock #: MPC20230045
ISSN: 2379-1365
DOI: 10.1520/MPC20230045