碱酸法制备高纯石墨试验研究  

Study on Preparation of High Purity Graphite by Alkali-Acid Process

作　　者：孔建军 程飞飞 刘克起 胡名卫 潘卫[1,2] 张明 Kong Jianjun;Cheng Feifei;Liu Keqi;Hu Mingwei;Pan Wei;Zhang Ming(Suzhou Sinoma Design&Research Institute of Non-metallic Minerals Industry Co.,Ltd.,Suzhou,Jiangsu 215151;National Engineering Re­search Center for Further Processing of Non-metallic Minerals,Suzhou,Jiangsu 215151)

机构地区：[1]苏州中材非金属矿工业设计研究院有限公司,江苏苏州215151 [2]国家非金属矿深加工工程技术研究中心,江苏苏州215151

出　　处：《非金属矿》2023年第3期74-75,80,共3页Non-Metallic Mines

基　　金：国家重点研发计划课题资助(2021YFC2902902)。

摘　　要：以黑龙江鹤岗某地石墨精粉为原料,采用碱酸法工艺进行高纯石墨制备试验研究。结果表明,碱酸法工艺可以有效去除石墨精粉中的石英、云母等杂质矿物,从而进一步提高固定碳含量;在NaOH用量为500 g/t,煅烧温度为700℃,煅烧时间为1.0 h,HCl用量为1500 g/t,酸浸温度为80℃,酸浸时间为4 h的条件下,可以获得产率为87.20%、固定碳含量为99.92%的提纯产品,达到GB/T 3518-2008《鳞片石墨》标准中高纯石墨的要求。The preparation of high purity graphite was studied by alkali-acid process with graphite from Hegang,Heilongjiang.The results show that the alkali-acid process could effectively remove lode minerals such as quartz and mica in the graphite,and increase the fixed carbon content.Under the conditions of NaOH dosage of 500 g/t,calcination temperature of 700℃,calcination time of 1.0 h,HCl dosage of 1500 g/t,acid leaching temperature of 80℃and acid leaching time of 4 h,purified products with yield of 87.20%and fixed carbon content of 99.92%could be obtained,which meet high purity graphite standard of GB/T 3518-2008"Flake graphite".

关 键 词：碱酸法 NAOH HCL 高纯石墨 

分 类 号：TQ4211[化学工程]