The loss of titanium in iron tailings is severe due to the dense symbiosis and the fine-grained embedding characteristics of titanium and iron minerals in a titanium ore from Panzhihua.To recover the titanium valuable metal from this iron tailing,process mineralogy of iron tailings was investigated firstly,and the results showed that the grades of titanium and iron in the ore were 6.25％and 11.84％,respectively.The titanium phase was mainly in the form of ilmenite,which occupied 59.38％in the total titanium.Additionally,the titanium existed in the sphene and silicate minerals as much as 29.39％.The distribution size of ilmenite aggregate was 0.016-0.032 mm.Furthermore,the exploratory trials were performed on the titanium-contained iron tailings.The results confirmed that the combined process of HIMS and flotation provided a better access to recover the ilmenite from this tailing.Under a grinding fineness of-0.048 pm accounting for 85％,a magnetic induction intensity of 1.2 T and open-circuit flotation flowsheets of"one-time roughing,one-time scavenging and three-times cleaning",the TiO2 grade of the high intensity magnetic separation(HIMS)concentrate was improved to 46.56％and operating recovery rate of 42.71％was be obtained.Herein,the present study provides some references for the secondary utilization of similar titanium-bearing tailings
关键词
钛铁矿/铁尾矿/工艺矿物学/钛回收/强磁选-浮选
Key words
ilmenite/iron tailings/process mineralogy/titanium recovery/high intensity magnetic separation-flotation
维普
万方数据