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为了优化氟化铵-盐酸法提纯隐晶质石墨的工艺条件,对隐晶质石墨的工业化生产提供理论指导,通过正交试验分析,探讨了氟化铵-盐酸法提纯中影响隐晶质石墨固定碳含量的主要因素。研究了氟化铵加入量、反应温度和液固比对隐晶质石墨固定碳含量的影响,确定了最优组合为A3C3D1(即液固比2:1、氟化铵加入量15 g、反应温度80℃),此时,其固定碳含量为99.07%。研究表明正交试验能优化氟化铵-盐酸法提纯隐晶质石墨的工艺条件,可以为隐晶质石墨的工业化生产提供一定的理论指导。
In order to optimize the technological conditions of purification of cryptocrystalline graphite by ammonium fluoride-hydrochloric acid method, the theoretical guidance for the industrial production of cryptocrystalline graphite was provided. Through orthogonal experimental analysis, the effects of impure graphite Fixed carbon content of the main factors. The effects of the addition of ammonium fluoride, reaction temperature and liquid-solid ratio on the fixed carbon content of cryptocrystalline graphite were investigated. The optimal combination of A3C3D1 (ie liquid-solid ratio 2: 1, ammonium fluoride 15 g, Temperature 80 ℃), this time, its fixed carbon content of 99.07%. The research shows that the orthogonal experiment can optimize the process conditions of purification of cryptographitic graphite by ammonium fluoride - hydrochloric acid, which can provide some theoretical guidance for the industrial production of cryptocrystalline graphite.