宁夏矿区煤矸石中有价值元素提取初探  

Study on the extraction of valuable metals from coal gangue of Ningxia mining

作　　者：李平[1] 赵艳敏[1] 田红丽[1] 刘荣杰[1] 

机构地区：[1]银川能源学院石油化工系,宁夏银川750105

出　　处：《石油化工应用》2016年第1期94-97,103,共5页Petrochemical Industry Application

基　　金：宁夏自然科学基金;项目编号:NZ14295

摘　　要：提取宁夏矿区煤矸石中有价值元素,是以煤矸石为原料合成4A分子筛的第一步。原料经过研磨、焙烧、酸浸、过滤、碱融、凝胶、干燥等预处理后,从煤矸石中提取有价值的铝、硅、铁。实验结果表明酸浸过程中最佳的条件是:酸液浓度20%、温度100℃、240 min和搅拌转速200 r/min。最佳条件下铝的提取率达到73.65%。Al,Si,Fe were extracted from Ningdong coal gangue by the process of crushing,calcining,acid-dissolution,filtering,alkali-dissolution, gelling and drying.The optimum technological parameters for acid-dissolution are as follows,the acid concentration is 20 %,the temperature is 100 ℃,the time is 240 min and speed of agitator is 200 r/min.The rate of extraction is 73.65 % by optimum conditions.

关 键 词：煤矸石 影响因素 

分 类 号：TD849.5[矿业工程—煤矿开采]