活化焙烧-联合浸出法制备白炭黑实验研究  

Experiment on Preparation of White Carbon by Activated Roasting and Combined Leaching

作　　者：朱晓波 巩文辉 李望 张传祥 Zhu Xiaobo;Gong Wenhui;Li Wang;Zhang Chuanxiang(College of Chemistry and Chemical Engineering,Henan Polytechnic University,Jiaozuo,Henan,China)

机构地区：[1]河南理工大学化学化工学院,河南焦作454000

出　　处：《矿产综合利用》2021年第6期29-33,共5页Multipurpose Utilization of Mineral Resources

基　　金：国家自然科学基金(51904097,51804103);河南省高等学校青年骨干教师培养计划项目(2019GGJS056)。

摘　　要：以煤矸石为原料,通过活化焙烧和联合浸出的方法制得高纯度的白炭黑,考察了预焙烧、酸浸、碱焙烧、水浸和陈化参数对白炭黑制备的影响。结果表明:在预焙烧温度为700℃,预焙烧时间为2 h,硫酸浓度为20%,液固比为5,浸出温度为90℃,浸出时间为1 h,加碱焙烧温度为750℃,碱渣比为1.5:1,水浸液固比为20,水浸温度为60℃,pH值为6和陈化温度为80℃条件下,得到白炭黑产品品位大于99.5%。White carbon with high purity was prepared from coal gangue by activation roasting and combined leaching.The effects of pre-roasting,acid leaching,alkali roasting,water leaching and aging parameters on the preparation of silica were investigated.Results show that the product grade of white carbon was more than 99.5%under the conditions of pre-roasting temperature of 700℃,roasting time of 2 h,H_(2)SO_(4) concentration of 20%,liquid to solid ratio of 5,leaching temperature of 90℃,leaching time of 1 h,alkali roasting temperature of 750℃,NaOH to slag ratio of 1.5:1,liquid to solid ratio of 20,leaching temperature of 60℃,pH value of 6 and aging temperature of 90℃.

关 键 词：白炭黑 活化焙烧 联合浸出 煤矸石 综合利用 

分 类 号：TD952[矿业工程—选矿]