煤矸石提铝提硅废液对烧结砖性能的影响研究  

Study on the influence of waste liquid from extracting aluminum and silicon from coal gangue on the properties of sintered brick

作　　者：刘春晖 宋慧平 张泽鹏 吴海滨 LIU Chun-hui;SONG Hui-ping;ZHANG Ze-peng;WU Hai-bin(State Environment Protection Key Laboratory of Efficient Utilization of Coal Waste Resources,Institute of Resources and Environment Engineering of Shanxi University,Taiyuan 030006,China)

机构地区：[1]国家环境保护煤炭废弃物资源化高效利用技术重点实验室,山西大学资源与环境工程研究所,山西太原030006

出　　处：《应用化工》2021年第7期1816-1820,1825,共6页Applied Chemical Industry

基　　金：山西省煤基重点攻关项目(MC2014-06);山西省揭榜招标项目计划(20191101007)。

摘　　要：以煤矸石、粉煤灰和煤矸石提铝提硅废液为主要原料制备烧结砖,研究废液掺量对烧结砖抗压性能的影响。结果表明,不掺加废液时,烧结砖的最佳配方为:煤矸石80%,粉煤灰20%,水固比为15%,烧结砖的抗压强度为29.78 MPa;废液替代水的量为50%时,烧结砖的抗压强度为24.97 MPa,满足MU20等级的要求。Coal gangue,fly ash and the waste liquid of aluminum and silicon extraction from coal gangue as main raw materials to prepare sinter brick,the effect of waste liquid content on the compressive properties of sintered brick was studied.The results show that the best formula of fired brick without waste liquid is 80% coal gangue,20% fly ash and 15% liquid-solid ratio.At this time,the compressive strength of sintered brick is 29.78 MPa.When the best amount of waste liquid is 50%,the compressive strength of sintered brick is 24.97 MPa.The waste liquid meets the requirements of MU20 grade.

关 键 词：煤矸石 提铝提硅 粉煤灰 烧结砖 抗压强度 

分 类 号：TQ179[化学工程—硅酸盐工业] X752[环境科学与工程—环境工程]