Identification and Solvent Extraction-Sedimentation Removal of Metallic Elements in Coal Tar Pitch
Lijuan Gao, Xiaojun Zheng, Yaming Zhu, Xuefe Zhao
Available Online April 2016.
- https://doi.org/10.2991/icmit-16.2016.148How to use a DOI?
- coal tar; medium-temperature pitch; refined pitch; modified pitch; ICP-AES
- Refined pitches were obtained by distillation and solvent extraction with raw materials of the high temperature coal tar and medium-temperature pitch, respectively. Modified pitches were achieved by air oxidation treatment of refined pitches. Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES) was used to determine metallic elements of raw material and the prepared pitches. The results show that both the coal tar and medium-temperature pitch have metallic elements as follow: Ge, Pb, Ba, Mg, Ce, Cd, Na, Sn, Zn, Ni, Bi, Nb, Be, Cr, Ca, V, In, Ti, Sr, Si, Cu, Al, Fe and Mn, among which the abundance of Pb, Mg, Zn, Ni, Cr, Ca, Si, Cu, Al, Fe, and Mn were relatively larger. The content of Pb, Cu, Mn, Zn, Cr, Ni and Mg of coal tar were larger than those of the medium-temperature pitch, while the content of Ca, Al and Fe were opposite. The content of all metallic elements decreased during the process of solvent extraction, while increased during the modification of refined pitch. Compared with the refined pitch prepared by solvent extraction, the content of metallic elements in coal tar refined pitch were higher. With the treatment of air oxidation, the metallic elements in modified medium-temperature pitch and modified coal tar pitch were similar except Zn. Obviously, the modified coal tar pitch has a larger content of Zn.
- Open Access
- This is an open access article distributed under the CC BY-NC license.
Cite this article
TY - CONF AU - Lijuan Gao AU - Xiaojun Zheng AU - Yaming Zhu AU - Xuefe Zhao PY - 2016/04 DA - 2016/04 TI - Identification and Solvent Extraction-Sedimentation Removal of Metallic Elements in Coal Tar Pitch BT - 2016 3rd International Conference on Mechatronics and Information Technology PB - Atlantis Press SN - 2352-538X UR - https://doi.org/10.2991/icmit-16.2016.148 DO - https://doi.org/10.2991/icmit-16.2016.148 ID - Gao2016/04 ER -