煤气化炉渣浮选及其精炭制备活性炭的研究  

Study on Flotation of Coal Gasification Slag and Preparation of Activated Carbon from Carbon Concentrate

作　　者：刘冬雪 胡俊阳 冯启明[1] 黄阳[1] 徐中慧[1] LIU Dongxue;HU Junyang;FENG Qiming;HUANG Yang;XU Zhonghui(School of Environment and Resource,Southwest University of Science and Technology,621010 Mianyang,China;Key Laboratory of Solid Waste Treatment and Resource Recycle Ministry of Education,Southwest University of Science and Technology,621010 Mianyang,China;Environmental Protection Bureau,Cangxi County,Guangyuan,Sichuan,628400 Guangyuan,China)

机构地区：[1]西南科技大学环境与资源学院,固体废物处理与资源化教育部重点实验室 [2]四川省广元市苍溪县环保局

出　　处：《煤炭转化》2018年第5期73-80,共8页Coal Conversion

基　　金：固体废物处理与资源化教育部重点实验室专职科研创新团队建设基金项目(14TDGK04).

摘　　要：利用浮选法有效地分选出了煤气化炉渣中的炭,当煤油用量为10kg/t、2~#油用量为1.5kg/t、粒度D_(90)=123μm时,精炭的产率为21.81%,烧失量为85.03%.以精炭为前驱体、KOH为活化剂制备活性炭,结果表明:当碱炭质量比为2.0、活化温度为800℃、活化时间为1.5h时,制备出的活性炭碘吸附值和亚甲蓝吸附值分别为1 292mg/g和278mg/g,比表面积为1 226.8m^2/g,孔容为0.694cm3/g,孔隙分布以微孔和中孔为主,该浮选精炭是制备活性炭良好的原材料.The carbon in coal gasification slag had been effectively separated by flotation process.Under the condition of kerosene 10 kg/t,2#oil 1.5 kg/t,and particle size D 90≈123μm,the productivity of carbon concentrate can reach 21.81%and ignition loss reaches 85.03%.The preparation of activated carbon was conducted using carbon concentrate as precursor and KOH as activator.In the condition of alkali/carbon mass ratio 2∶1,activation temperature 800℃,and activation time 1.5 h,the prepared activated carbon shows the following characteristics:iodine and methylene blue adsorption value can be 1 292 mg/g and 278 mg/g,respectively,specific surface area 1 226.8 m^2/g,pore volume 0.694 cm^3/g.The pores are mainly micropores and mesopores,and the flotation carbon concentrate is a good raw material for activated carbon.

关 键 词：煤气化炉渣 浮选精炭 KOH活化法 活性炭 吸附性能 

分 类 号：TQ424.1[化学工程] X784[环境科学与工程—环境工程]