用煤矸石酸浸液微波加热制备聚硅酸硫酸铝铁  

Preparation of Polysilicate Aluminum Ferric Sulfate Using Coal Gangue Acidic Leaching Solution by Microwave Heating by Microwave Heating

作　　者：孔德顺[1,2,3] 蒋荣立 KONG Deshun;JIANG Rongli(School of Chemical Engineering,China University of Mining and Technology,Xuzhou 221016,China;School of Chemistry and Materials Engineering,Liupanshui Normal University,Liupanshui 553004,China;Guizhou Key Laboratory of Coal Clean Utilization,Liupanshui 553004,China)

机构地区：[1]中国矿业大学化工学院,江苏徐州221016 [2]六盘水师范学院化学与材料工程学院,贵州六盘水553004 [3]贵州省煤炭洁净利用重点实验室,贵州六盘水553004

出　　处：《湿法冶金》2021年第2期155-158,共4页Hydrometallurgy of China

基　　金：贵州省科技厅科学技术基金资助项目(黔科合基础[2018]1142);贵州省教育厅创新群体重大研究项目(黔教合KY字[2017]054);贵州省煤炭洁净利用重点实验室项目(黔科合平台人才[2020]2001)。

摘　　要：研究了用煤矸石酸浸液在微波加热条件下制备聚硅酸硫酸铝铁(PSAFS),并用PSAFS处理模拟废水。考察了聚硅酸活化pH、陈化时间、体系pH、铁铝及铁硅的物质的量比、微波功率、微波加热时间对制备PSAFS性能的影响。结果表明,在聚硅酸活化pH=1.9、陈化时间20 min、pH=1.2、n(Fe^(3+))/n(Al^(3+))=1/1、n(Fe^(3+))/n(SiO_(2))=9/1、微波功率380 W、微波加热时间3 min条件下,可获得PSAFS;XRD及FT-IR分析结果表明,制备的聚合产物主要为无定形PSAFS。The preparation of polysilicic aluminum ferric sulfate(PSAFS)using coal gangue acidic leaching solution by microwave heating was studied.Treatment of simulated wastewater by PSAFS was investigated.The effects of process parameters such as polysilicate activation pH,aging time,system pH,n(Fe^(3+))/n(Al^(3+)),n(Fe^(3+))/n(SiO_(2))on preparation and turbidity removal performance of PSAFS were examined.The results show that PSAFS is prepared under the conditions of polysilicic acid activation pH of 1.9,aging time of 20 min,system pH of 1.20,n(Fe^(3+))/n(Al^(3+))=1/1,n(Fe^(3+))/n(SiO_(2))=9/1,microwave power of 380 W,microwave heating time of 3 min.The XRD and FT-IR analysis results show that the PSAFS product is amorphous.

关 键 词：煤矸石 酸浸液 聚硅酸 聚硅酸硫酸铝铁(PSAFS) 微波 

分 类 号：TF803.2[冶金工程—有色金属冶金] TU991.22[建筑科学—市政工程]