摘要：为了探讨焙烧温度对石墨提纯效果的影响,对加碱焙烧浸出法制备高纯石墨工艺进行理论分析和试验研究。经过理论分析,得出焙烧温度是决定焙烧效果的一个关键因素的结论。如果升高焙烧温度来提纯石墨,不仅可以缩短焙烧时间,而且可以提高石墨产品的固定碳含量。试验结果表明:在1000℃下焙烧40min后提纯得到的石墨,其固定碳含量已经超过了99.9%,远远高于在较低温度下提纯得到的石墨产品的固定碳含量,说明焙烧温度对提纯效果的影响很大。

关键词：石墨；提纯；碱酸法；焙烧温度

Abstract： In order to investigate the effect of roasting temperature on refining effect， the theoretical analysis and experimental study on preparation of high purity graphite by alkaline roasting-leaching method was carried out. It was analyzed by theory that the roasting temperature was a key factor to determine the effect of roasting in high purity graphite preparation. So if graphite was purificated at a higher roasting temperature， it could not only shorten the roasting time， but also enhance the fixed carbon content. The experimental results showed that after being roasted for 40 min under the temperature of 1 000 ℃， the fixed carbon content of the purified graphite had already exceeded 99.9%， which was much more than the one of the graphite purified at a lower temperature. It illustrated that the roasting temperature had a great influence on refining effect. 

Keywords：graphite； purification； alkali-acid method； roasting temperature