Enhancement, application, and challenges of chromium–corundum high‐temperature refractories DOI
H. H. Zhang,

Laihao Yu,

Yingyi Zhang

et al.

International Journal of Applied Ceramic Technology, Journal Year: 2024, Volume and Issue: unknown

Published: June 11, 2024

Abstract Chromium–corundum, as a common refractory material, is broadly applied in high‐temperature kilns due to its superior thermal stability and high melting point. Unfortunately, this susceptible corrosion destruction under extreme furnace conditions by chemical erosion, mechanical wear, shock, which significantly shortens useful life. Accordingly, recent years, the issue of how improve slag resistance, mechanical, sintering properties chromium–corundum refractories has aroused widespread attention. In work, behavior application status Ausmelt furnace, waste incinerator, coal water slurry gasifier, HImelt reduction are analyzed discussed. To service life refractories, enhancement method mechanism performance, properties, shock resistance also summarized. Finally, some suggestions prospects made for longevity refractories.

Language: Английский

Influence of Al2O3/SiO2 Ratio on the Viscosity and Structure of Aluminate Ironmaking Slag Systems in the HIsmelt Process DOI
Shuo Zhang, Wei Zheng, Yong Hou

et al.

Metallurgical and Materials Transactions B, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 24, 2025

Language: Английский

Citations

1
Thermophysical properties and structural characterization of high-Al2O3 aluminosilicate slag melts: Effect of Al2O3 addition methods DOI
Shuo Zhang, Yong Hou, Jia Guo

et al.

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

Citations

0
Formation process and titanium strengthening mechanism of self-repairing graphite protective layer in blast furnace hearth DOI
Yong Deng, Ran Liu, Dequan Wang

et al.

Metallurgical Research & Technology, Journal Year: 2025, Volume and Issue: 122(2), P. 207 - 207

Published: Jan. 1, 2025

Self-repairing graphite protective layer has been discovered as a suitable in blast furnace (BF) hearth recent years. In the current study, actual samples of self-repairing taken from commercial BF were analyzed detail. The results revealed that hot face exhibits distinct white luster, with large areas adhering to surface. Along direction its formation, sample displays striped pattern alternating layers. is strip-shaped, it relatively coarse and unevenly distributed. runs same direction, unlike molten iron which no fixed chaotic state. formation process can be concluded, precipitates at interface through heterogeneous nucleation. Crystal nuclei often preferentially adhere surface these impurities form, owing fact nucleation energy lower than homogeneous Titanium during observation microscopic morphology layer, more robust due strengthening effect titanium. mechanism summarized, divided into four steps. TiC particles are dispersed around graphite, reduces difficulty orientation flake growth. presence increases growth rate crystals. steps cyclically performed, so precipitate by titanium mechanism, serves protect carbon brick hearth.

Language: Английский

Citations

0
Colloidal silica as an anti-hydroxylation binder for pressed MgO structures DOI
Rafael Salomão, Isabela S. Martinatti, Leandro Fernandes

et al.

Journal of the European Ceramic Society, Journal Year: 2025, Volume and Issue: 45(13), P. 117517 - 117517

Published: May 8, 2025

Language: Английский

Citations

0
Enhancement, application, and challenges of chromium–corundum high‐temperature refractories DOI
H. H. Zhang,

Laihao Yu,

Yingyi Zhang

et al.

International Journal of Applied Ceramic Technology, Journal Year: 2024, Volume and Issue: unknown

Published: June 11, 2024

Abstract Chromium–corundum, as a common refractory material, is broadly applied in high‐temperature kilns due to its superior thermal stability and high melting point. Unfortunately, this susceptible corrosion destruction under extreme furnace conditions by chemical erosion, mechanical wear, shock, which significantly shortens useful life. Accordingly, recent years, the issue of how improve slag resistance, mechanical, sintering properties chromium–corundum refractories has aroused widespread attention. In work, behavior application status Ausmelt furnace, waste incinerator, coal water slurry gasifier, HImelt reduction are analyzed discussed. To service life refractories, enhancement method mechanism performance, properties, shock resistance also summarized. Finally, some suggestions prospects made for longevity refractories.

Language: Английский

Citations

1