|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||8th International Symposium on High Temperature Metallurgical Processing
||E-44: Influence of Converter Slag on Decomposition Behavior of Limestone during BOF Steelmaking Process
||Hua Lu, Wen-Wen Mao, Chen-Xiao Li, Hong Li
|On-Site Speaker (Planned)
Directly charging limestone into slag in BOF is a newly emerging technique which broke through the traditional BOF slagging principle. It is necessary to study the decomposition behavior of CaCO3 in converter slag during BOF steelmaking. FeOx, SiO2, MnOx and pre-melting slags were mixed with CaCO3 according to a certain proportion to simulate the environment of limestone in converter slag. TG-DTA results indicated that slag with individual component, including FeOx, SiO2 and MnOx, all had obvious effects on reducing the decomposition temperature of CaCO3. Pre-melting slags with multiple components had further reducing effects than individual component. XRD results showed converter slag component would react with decomposition product of CaCO3 and generate solid solution or oxide, reducing the activity of CaO and the decomposition temperature of CaCO3.
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