煤矸石制备PAFS与P型分子筛的实验研究  

Study of PAFS and P Zeolite Prepared by Coal Gangue

作　　者：岳虎[1] 郁钟铭[1] 任青山[1] 

机构地区：[1]六盘水师范学院,贵州六盘水553004

出　　处：《煤炭技术》2017年第9期318-320,共3页Coal Technology

基　　金：六盘水师范学院科学研究计划项目(LPSSY201112);贵州省教育厅"125"重大科技专项计划项目(黔教合重大专项字[2012]017号);贵州省采矿工程特色重点学科(黔学位办[2015]26号)

摘　　要：以六盘水矿区的煤矸石为原料,采用酸浸的方法提取其中的铝铁元素合成了水处理剂PAFS,并用酸浸滤渣合成了P型分子筛。研究结果表明:将洗矸350℃低温氧化2 h,用40%的硫酸按固液比1∶3.5在90℃酸浸4.5 h,再将滤渣于750℃焙烧2 h,用一次酸浸液进行酸浸。最终铝铁浸溶率分别为73.91%、91.97%,用二次酸浸液合成的PAFS在24 h的去浊率可达99.989%。将干燥后的滤渣与氢氧化钠按质量比1∶1.1混合研磨均匀,于750℃碱融2 h,水淬,于60℃老化2.5 h,以95℃晶化7 h可合成结晶较好的P型分子筛。The gangue of Liupanshui mining area was taken as the main material, the aluminum and iron were extracted by acid leaching then compounded PAFS, and the residue was compounded P zeolite. The results of the research were obtained that the gangue was baking at 350℃ for 2 h, the sulfuric acid concentration was 40%, the soild-liquid ratio was 1：3.5, acid leaching at 90 ℃ for 4.5 h, the residue was baked at 750℃ and acid leaching by once filtrate. Finally the aluminum and iron removal ratio were 73.91% and 91.97%, after 24 h the removal of turbidity of the PAFS that compounded by twice filtrate was 99.989%. The residue was mixed with sodium hydroxide, the mass ratio was 1：1.1, alkali melted at 750℃ for 2 h, water quenched, aged at 60 ℃ for 2.5 h, crystallized at 95 ℃ for 7 h, finally the better crystal P zeolite was obtained.

关 键 词：煤矸石 聚合硫酸铝铁 酸浸 碱融 P型分子筛 

分 类 号：TD849.5[矿业工程—煤矿开采]