高铁煤矸石酸浸液合成氧化铁红的实验研究  

Experimental study on preparation of iron oxide red from acid leaching solution of high-iron coal gangue

作　　者：孔德顺[1] 范佳鑫[1] 石开仪[1] 李志[1] 

机构地区：[1]六盘水师范学院化学与化工系,贵州省教育厅煤系固体废弃物资源化利用特色重点实验室,贵州六盘水553004

出　　处：《无机盐工业》2013年第7期56-58,共3页Inorganic Chemicals Industry

基　　金：六盘水市煤系固体废弃物资源化利用创新团队资助(52020-2012-04-01-02);贵州省教育厅重点科研项目资助(黔财教[2011]232);贵州省煤炭资源清洁高效利用科研实验平台资助(黔科平台[2011]4003);六盘水师范学院特色专业建设点资助(LPSSYt-szy201102)

摘　　要：以高铁煤矸石为原料,先用硫酸酸浸的方法获得含有铝离子的硫酸铁溶液;采用分步沉淀的方法 ,使Fe3+完全转化为氢氧化铁凝胶而与Al3+分离;再将获得的氢氧化铁凝胶烘干后高温煅烧;最后将煅烧产物磨粉过筛,获得了氧化铁红。确定了合成氧化铁红的工艺条件是:酸浸液中铁离子的浓度为0.31 mol/L;分离Fe3+与Al3+时,氢氧化钠溶液的浓度为1 mol/L,且控制终点pH在3.0左右;干凝胶焙烧温度为800℃,时间为60 min。XRD及化学分析结果表明:所得产物为氧化铁红,符合GB/T 1863—2008《氧化铁颜料》的相关要求。High-iron coal gangue was taken as the raw material to obtain ferric sulfate solution containing aluminum ions with sulfuric acid leaching method firstly.As totally turned into Fe（OH）3gel,the Fe3＋was separated from Al3＋by fractional precipitation,then the Fe（OH）3 gel was calcined at high temperature after it was dried.At last,the iron oxide red was obtained after the calcined product being milled and sieved.The synthesis conditions of iron oxide red were determined： the concentration of Fe3＋in the acid leaching solution was 0.31 mol/L;the concentration of NaOH was 1 mol/L and the endpoint of the pH was about 3.0,when separating the Fe3＋from Al3＋;the dry gel was calcined at 800 ℃ for 60 min.XRD and chemical analysis showed that the product was iron oxide red,and met the requirements of Iron Oxide Pigment,GB/T 1863—2008.

关 键 词：高铁煤矸石 酸浸液 氧化铁红 

分 类 号：TQ138.11[化学工程—无机化工]