摘要
铬铁矿是铬盐生产的主要原料来源,铬铁矿酸浸工艺因无Cr(Ⅵ)污染且资源利用率高而备受关注。综述了近年来铬铁矿酸浸过程强化以及铬铁分离方法的研究进展。铬铁矿酸浸工艺是以硫酸为强酸浸出,通过机械活化处理、氧化剂的加入以及微波加热等辅助强化方法,使得铬铁矿能够被高效、快速地浸出。浸出液中的铬铁分离方法主要有针铁矿法、黄铁矾法、萃取法、草酸法、铁蓝沉淀法和莫尔盐法等。多种强化手段与反应过程相结合已成为铬铁矿硫酸浸出工艺的重要研究方向。
Chromite is the main raw material source for the production of chromium salts.The acid leaching technology from chromite ore has become a worldwide concern due to its no Cr (Ⅵ) pollution and high resource utilization.The research progress of the acid leaching technology from chromite ore and its separation method of chromium-iron in recent years were summarized.The acid leaching technology from chromite ore is mainly leaching with sulfuric acid as the strong acid,and the auxiliary method such as mechanical activation,oxidizer and microwave heating could make the chromite ore be leached efficiently and rapidly.The separation methods of chromium-iron from leaching solution including goethite method,jarosite process,extraction method,oxalic acid precipitate method,ferric ferrocyanide method and diammonium ferrous sulfate method etc..The combination of various strengthening methods and reaction processes has become an important research direction of chromite sulfuric acid leaching process.
作者
秦险峰
全学军
叶鹏
封承飞
李纲
Qin Xianfeng;Quan Xuejun;Ye Peng;Feng Chengfei;Li Gang(School of Chemistry and Chemical Engineering,Chongqing University of Technology,Chongqing 400054,China)
出处
《无机盐工业》
CAS
CSCD
北大核心
2020年第6期13-19,共7页
Inorganic Chemicals Industry
基金
重庆市社会事业与民生保障科技创新专项项目(cstc2017shmsA100009)
重庆理工大学研究生创新项目(ycx2018251)
重庆市高校优秀成果转化项目(KJZH17128)。
关键词
铬铁矿
酸浸
微波
机械活化
铬铁分离
chromite ore
acid leaching
microwave
mechanical activation
separation of chromium-iron
作者简介
通讯作者:全学军,E-mail:hengjunq@cqut.edu.cn;秦险峰(1995—),男,硕士研究生,研究方向为资源环境化工,E-mail:491063873@qq.com。
