| Title | Preparation and characterization of low-cost refractories for aluminum-melting-furnace linings from ferrotitanium slag |
|---|---|
| ID_Doc | 7488 |
| Authors | Li, YC; Zhang, H; Zhao, HZ; Yu, J; Ma, JH; Feng, L; Liu, YL |
| Title | Preparation and characterization of low-cost refractories for aluminum-melting-furnace linings from ferrotitanium slag |
| Year | 2022 |
| Published | Ceramics International, 48, 19 |
| Abstract | Management and utilization of solid waste are necessary for sustainable development in the metallurgical industry. This study focuses on the use of ferrotitanium slag (FTS) as a low-cost source of hibonite in the refractory lining of an aluminum-melting furnace. FTS enhances the resistance of castable samples to cryolite melt penetration but reduces their bulk density and cold mechanical strength. To explain this enhancement mechanism, we present a model in which the Al2O3 and SiO2 components in the castable samples react with the cryolite melt to form a high-viscosity barrier layer against the molten cryolite. Moreover, the well-developed calcium hexaaluminate crystals in FTS, which show excellent resistance against Na+ and F-, prevent the penetration of cryolite melt through the FTS aggregate area, and reduce the penetration speed. By promoting high-efficiency resource utilization, this study contributes to the development of a circular economy in the metallurgical industry. |
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