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| Study of the impregnation process for the preparation of special graphite with high purity coal tar pitch as the impregnant |
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Received:August 26, 2014
Revised:September 01, 2014
Accepted:September 05, 2014
Published Online:December 29, 2015
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| DOI： |
| KeyWord:high pure coal tar pitch; impregnant; impregnation process; weight gain rate; open porosity |
| Author | Institution |
| XU Qing-xin |
Kunming Metallurgical Research Institute,Kunming |
| HE Xiao-cai |
Kunming Metallurgical Research Institute |
| LI Huai-ren |
Kunming Metallurgical Research Institute,Kunming |
| XU Jun-yi |
Kunming Metallurgical Research Institute,Kunming |
| CUI Tao |
Kunming Metallurgical Research Institute,Kunming |
| ZAL Zhong-biao |
Kunming Metallurgical Research Institute,Kunming |
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| Abstract: |
| The impregnation process for the preparation of special graphite with high purity coal tar pitch as the impregnant was investigated and the technological parameters were optimized.The impregnation temperature,pressure and time have significant impact on the weight gain rate and open porosity of the special graphite.When the impregnation temperature is 160-180℃,impregnation pressure is 0.9-1.3MPa,impregnation time is 90-120min, the quality of the special graphite is best,and the weight gain rate and open porosity are 20.6% and 14%, respectively. |
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