工业生产SiC的副产品石墨废料的提纯  

Purification Research on the Graphite from SiC Industry Byproduct

作　　者：郝宏艳[1] 韦莉 侯书恩[1] 靳洪允[1] 

机构地区：[1]中国地质大学武汉材料与化学学院.湖北武汉430074 [2]广西冶金产品质量监督检验站,广西南宁530023

出　　处：《材料科学与工程学报》2013年第1期133-136,147,共5页Journal of Materials Science and Engineering

基　　金：国家自然科学基金资助项目(NSFC51102218);中央高校基本科研业务费专项资金资助项目(CUG120402,CUG120118)

摘　　要：本文报道了"碱融-酸浸"法对工业生产SiC的副产品石墨废料的提纯研究,通过研究焙烧温度、焙烧时间、酸浸浓度、酸浸时间等因素对提纯效果的影响,确定了该类石墨提纯工艺的最佳条件:实验中NaOH与石墨质量比为2∶1,焙烧温度为650℃,焙烧时间为60min;室温下酸浸过程的HCl浓度为10%,酸浸时间为180min,此条件下提纯后的石墨其固定碳含量提升到98%以上。An ＇ alkali fusion-acid leaching method was proposed to extract graphite out of the SiC industry byproduct in this paper. The technical parameters affecting the extraction results including calcination temperature, calcination time, hydrochloric acid concentration and acid leaching time were tested and optimized. And obtained were the optimum conditions such as NaOH-to-graphite mass ratio of 2： 1, alkali fusion calcination temperature of 650℃and calcination time of 60 rain. The 10 wt% HC1 solution was used as the leaching acid and the leaching time was set 180 rain. As a result, the carbon content in the extracted graphite can be uo to 98%

关 键 词：副产品石墨 提纯 碱融 酸浸 

分 类 号：TQ016[化学工程]