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Corrosion mechanism and behavior of nickel slag on semi‐rebonded magnesia‐chrome brick for top‐blown furnace.
- Source :
- International Journal of Applied Ceramic Technology; May2024, Vol. 21 Issue 3, p2357-2368, 12p
- Publication Year :
- 2024
-
Abstract
- The corrosion behavior and mechanism of nickel slag on semi‐rebonded magnesia‐chrome brick are investigated. The variations in the specimens before and after corrosion were studied using microstructure, phase composition, and thermodynamic simulations. The results reveal that at high temperatures, the metal oxides in nickel slag easily react with Cr2O3 to generate Cr‐spinel, and the isolation layer forms a continuous phase on the surface of the refractory. The appearance of the isolation layer causes the nickel slag corrosion process on semi‐rebonded magnesia‐chrome brick to shift from direct to indirect corrosion controlled by ion diffusion, effectively blocking the continuous penetration of Ca2+ and Si4+ in the slag inside the refractories. As a result, the semi‐rebonded magnesia‐chrome brick resists nickel slag corrosion extremely well. [ABSTRACT FROM AUTHOR]
- Subjects :
- SLAG
NICKEL
FURNACES
CHROMIUM oxide
NICKEL oxide
METALLIC oxides
BRICKS
Subjects
Details
- Language :
- English
- ISSN :
- 1546542X
- Volume :
- 21
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- International Journal of Applied Ceramic Technology
- Publication Type :
- Academic Journal
- Accession number :
- 176535056
- Full Text :
- https://doi.org/10.1111/ijac.14610