高铁沉积型铝土矿的选矿技术研究  

PROCESSING TECHNOLOGY STUDY ON BENIFICIATION OF THE HIGH FERROUS SEDIMENTARY BAUXITE

作　　者：宋涛[1,2,3] 陈献梅[1,2,3] 

机构地区：[1]昆明冶金研究院,昆明650093 [2]云南选冶新技术重点实验室,昆明650031 [3]共伴生有色金属资源加压湿法冶金技术国家重点实验室

出　　处：《矿冶》2017年第3期19-23,45,共6页Mining And Metallurgy

摘　　要：以云南高铁沉积型铝土矿为研究对象开展选矿试验研究工作。铝土矿原矿Al_2O_3品位45.58%,SiO_2品位8.73%,TFe品位19.78,A/S为5.22。在研究了该矿石化学成分与矿物组成的基础上,进行了磁选脱铁、正浮选一水硬铝石的试验研究,最终得到Al_2O_3品位55.38%、回收率达到69.17%的精矿,TFe品位10.73,A/S为9.87。研究成果表明,高铁沉积型铝土矿通过磁选—浮选工艺可以实现脱铁提铝降硅的目的。Targeted at high ferrous sedimentary bauxite in Yunnan province, we carried out mineral processing research work. The bauxite ore has A120 3 grade 45. 58% , Si0 2 grade 8. 73% , total Fe 19. 78% , A/S ratio 5. 22. Based on the mineral composition study and chemical analysis, test work was barried out on magnetic separation for removing ferrous and direct flotation of the diaspore minerals to increase A/S. Following figures were obtained from the experiment： A1203 grade in concentrate 55. 38% , A120 3 recovery 69. 17% , total Fe 10. 73% , A/S ratio 9. 87. The test results show that high ferrous sedimentary bauxite can be upgraded by removing ferrous iron and silicon component using magnetic separation-flotation process .

关 键 词：铝土矿 沉积型 高铁 

分 类 号：TD952[矿业工程—选矿]