深圳大学学报（理工版）2017，Vol.34Issue(6)：557-561,5.DOI:10.3724/SP.J.1249.2017.06557
中温煅烧分离回收钒冶炼废渣硫酸铵与硫酸钠
Separation and recovery of ammonium sulfate and sodium sulfate from vanadium smelting residues by medium temperature calcinations
摘要
Abstract
Taking the precipitated vanadium waste residue,which is smelting slag after extracting vanadium from Panzhihua Steel,as raw materials,and by using the techniques of pretreatment,medium temperature calcination and recovery of sodium sulfate ammonium sulfate,we explore the effects of material moisture content,particle size,calcination temperature,calcination time and stirring number on product purity as well as the recovery efficiency of mixed crystals of sodium sulfate and ammonium sulfate.The ideal separation recycling process conditions is obtained by orthogonal test.The optimal drying process parameters are drying temperature of 120 ℃,drying time of 1 h,by which the moisture in the raw material could reduce from 18.9％ to 5％.The optimal calcination process parameters include calcination temperature of 400 ℃,calcination time of 3 h,stir of 3 times.Finally,the purity of segregate sodium sulfate and segregate ammonium sulfate could reach 90.56％ and 94.41％,respectively;and their recovery efficiency is 91.31％ and 21.51％,respectively.The segregate sodium sulfate and segregate ammonium sulfate produced with this method can be used as raw materials directly.This process can not only achieve solid waste recycling,but also avoid environmental pollution.关键词
化学分离工程/硫酸钠/硫酸铵/尾矿废渣/中温煅烧/资源回收Key words
chemical separation engineering/sodium sulfate/ammonium sulfate/tailings waste residue/medium temperature calcination/resource recovery分类
资源环境引用本文复制引用
谢世前,余江,陶红群,冉宗信,王亚婷,郭欣,彭炜东..中温煅烧分离回收钒冶炼废渣硫酸铵与硫酸钠[J].深圳大学学报（理工版）,2017,34(6):557-561,5.基金项目
National Natural Science Foundation of China (31100374) （31100374）
Foundation of Science and Technology Department of Sichuan Province (2017GZ0380) （2017GZ0380）
Foundation of Chengdu Science and Technology Bureau (2015-HM01-00013-SF)国家自然科学基金资助项目(31100374) （2015-HM01-00013-SF）
四川省科技厅重点资助项目(2017GZ0380) （2017GZ0380）
成都市科技局资助项目(2015-HM01-00013-SF) （2015-HM01-00013-SF）
