About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Characterization of Minerals, Metals and Materials 2022
|
Presentation Title |
Coking Coal Macromolecular Structural Characteristic and Its Correlations with the Compressive Strength of CaO-containing Carbon Pellets |
Author(s) |
Xiaomin You, Xuefeng She, Jingsong Wang, Qingguo Xue |
On-Site Speaker (Planned) |
Xiaomin You |
Abstract Scope |
CaO-containing carbon pellets (CCCP) preparing from well-mixed coking coal (CC) and calcium oxide (CaO) were roasted at different pyrolysis temperatures(400–800°C). To investigate the effect of roasted temperature on the compressive strength of CCCP, Raman spectroscopy and X-ray diffraction were adopted to characterized macromolecular structure changes of CC in CCCP. The results showed that the compressive strength of CCCP increased with the increase of temperature. The compressive strength of CCCP was negatively correlated with the peak intensity ratio (ID1/IG ) value and positively correlated with the peak intensity ratio ( IG/IAll ) value. A linear relationship between the compressive strength of CCCP and the carbon layer spacing of CC was established. As temperature increased, the structural defects and imperfections of carbon crystallites were gradually decreased. The aromatic carbon layers were more closely packed, which formed high-order CC. As a result, the compressive strength of CCCP increased. |
Proceedings Inclusion? |
Planned: |
Keywords |
Powder Materials, Process Technology, Characterization |