|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||8th International Symposium on High Temperature Metallurgical Processing
||E-28: Effect of Al2O3 Content on the Crystallization Behavior of Blast Furnace Slag Using Single Hot Thermocouple Technique
||Qin Yuelin, Yang Yanhua, Zhang Qianying, Deng Nengyun
|On-Site Speaker (Planned)
The critical cooling rate required for the formation of glassy slag is one of the important characteristics for molten BF slag. The crystallization behavior of molten BF slag has been studied by in situ observation with the single hot thermocouple technique. The isothermal and non-isothermal experiments were performed to construct time-temperature-transformation and continuous-cooling-transformation diagrams. The effect of Al2O3 on the critical cooling rate of the CaO-SiO2-MgO-Al2O3 slags were studied under conditions of CaO/SiO2 = 1.2, 8 mass% MgO and 10~16 mass% Al2O3. The following finding are reported in the present paper: (i) Higher Al2O3 content decreased the critical cooling rate. (ii) The crystallization temperature of molten BF slag lowers as the cooling rate increases, the slag have larger critical cooling rate, higher crystallization temperature. The results could be used to design proper cooling path of molten BF slag for the formation of glassy.
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