矿产保护与利用Issue(2)：51-55,5.DOI:10.13779/j.cnki.issn1001-0076.2017.02.010
某氰化尾渣强磁预选-直接还原焙烧-弱磁选提铁研究
Recovery of Iron from the Cyanide Tailings with a Combined Process of High Intensity Magnetic Preconcentration-direct Reduction Roasting-magnetic Separation
冯杰 1傅平丰 1边振忠1
作者信息
- 1. 北京科技大学 土木与资源工程学院,北京 100083
- 折叠
摘要
Abstract
A combined process of high intensity magnetic preconcentration-direct reduction roast-magnetic separation was applied to recover iron from the cyanide tailings with TFe grade of 30.71%.The tailings were taken from a gold smelting factory in Henan Province.The rough iron concentrate with TFe grade of 44.96% and recovery of 78.27% was obtained after being treated with high intensity magnetic preconcentration at the magnetic field intensity of 1 513 kA/m.The rough iron concentrate was dealt by direct reduction roasting at 1 200 ℃ for 90 min with the mass ratio of rough concentrate,bituminous coal and calcium oxide in 1∶0.2∶0.2.Then the calcined materials were further treated by two-stage grinding and two-stage low intensity magnetic separation.Finally,the reduced iron powder with TFe grade of 92.43% and recovery of 93.2% was obtained.The yield of iron to the cyanide tailings reached 24.24%.The combined process provided a novel approach for recovering refractory iron from the cyanide tailings.关键词
氰化尾渣/强磁选/直接还原焙烧/弱磁选/还原铁粉Key words
cyanide tailings/high intensity magnetic separation/direct reduction roasting/low intensity magnetic separation/reduced iron powder分类
矿业与冶金引用本文复制引用
冯杰,傅平丰,边振忠..某氰化尾渣强磁预选-直接还原焙烧-弱磁选提铁研究[J].矿产保护与利用,2017,(2):51-55,5.
