材料期刊网

云南复杂含钪多金属矿原矿含Fe 26.65％,TiO2 8.68％,Sc2 O3 88.60 g·t-1.矿石中有价矿物主要为磁铁矿、钛铁矿、金红石,钪主要分布于钛辉石和辉石中.采用螺旋溜槽重选工艺预选抛尾得到铁-钛-钪混合粗精矿;采用弱磁选—摇床重选分选工艺进一步分离混合精矿中的铁、钛、钪.试验结表明,在一段磨矿细度为＜0.154 mm占98％、混合粗精矿二段磨矿细度为＜0.038 mm占98％、弱磁选磁场强度H=0.10 T的综合条件下,得到了Fe品位为56.21％％,铁回收率为20.10％的铁精矿;TiO2品位为48.68％,钛回收率为3.81％的钛精矿;Sc2 O3品位为226.20 g·t-1,钪回收率为87.67％的钪精矿.实现了矿石中有价金属铁、钛、钪的综合利用,且钪精矿可作为后续工艺进一步提纯钪的原料.

The raw ores containing scandium in Yunnan contain Fe 26.65％,TiO2 8.68％ and Sc2O3 88.60 g /t.Main valuable minerals in the ore ware magnetite and ilmenite,and scandium is mainly distributed in titanaugite and pyroxene in the ores.Iron-titanium-scandium mixed coarse concentrate was gotten by spiral chute gravity separation flowsheet.Iron,titanium and scandium in the mixed concentrate were further separated by low intensity magnetic separation—table gravity separation flowsheet.The test results indicated that iron concentrate contained Fe 56.21％ with iron recovery 20.10％,titanium concentrate contained TiO2 48.68％ with titanium recovery 3.81％ and scandium concentrate Sc2O3 226.20 g · t-1 with scandium recovery 87.67％ were gotten under the comprehensive conditions of primary grinding fineness of 98％ materials in size lower than 0.154 mm,second grinding fineness of mixed coarse concentrate of 98％ materials in size lower than 0.038 mm and magnetic field intensity of low intensity magnetic separation 0.10T.Comprehensive utilization of valuable metals iron,titanium and scandium were realized,and scandium concentrate was used as the raw materials for the following flowsheet to further purify scandium.