|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||9th International Symposium on High Temperature Metallurgical Processing
||D-17: Study on Grain Size and Porosity of the Produced Lime from Limestone in Early Converter Slag
||Guangzong Zhang, Nan Wang, Min Chen, Haohua Deng, Xiaoao Li
|On-Site Speaker (Planned)
Grain size and porosity of the produced lime from limestone in early converter slag were investigated at 1300-1400 ℃, and the influence of slag temperature was discussed. The experimental results showed that both the grain size and porosity of the produced lime developed significantly on the slag temperature. After the complete decomposition time of limestone, grain size and porosity changed under the sole role of CaO grain growth. What’s more, grain size evolves sharply with slag temperature, which was illustrated by an analysis on the relationship between grain size and reaction time. Meanwhile, higher porosity was reached at 1400 ℃, and the concentration gradient of CO2 between the reaction interface and slag bulk was calculated as about 2.05 times as that at 1300 ℃. A proposal on operation to obtain the produced lime with fine grain size and higher porosity was put forward.
Key words: grain size; porosity; produced lime; limestone; slag temperature