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云南复杂含钪多金属矿原矿含Fe 26.65%,TiO_2 8.68%,Sc2O388.60 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;TiO_2品位为48.68%,钛回收率为3.81%的钛精矿;Sc_2O_3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。
Yunnan complex scandium-bearing polymetallic ore contains 26.65% of Fe, 8.68% of TiO 2 and Sc 2 O 388.60 g · t -1. Ore minerals are mainly magnetite, ilmenite, rutile, scandium are mainly distributed in the titanium pyroxene and pyroxene. The iron-titanium-scandium mixed coarse concentrate was pre-selected by the spiral chute reselection process, and the iron, titanium and scandium in the mixed concentrate were further separated by the weak magnetic separation-shaker reselection process. The experimental results show that under the condition of a grinding fineness of <0.154 mm, 98%, the second-stage grinding fineness of the mixed crude concentrate is <0.038 mm, the magnetic field strength of the weak magnetic separation H = 0.10 T, The results showed that the iron concentrate with the Fe grade of 56.21% and the iron recovery of 20.10%, the titanium concentrate with the TiO 2 grade of 48.68% and the titanium recovery of 3.81%, the grade of Sc_2O_3 was 226.20 g · t -1, Scandium recovery of scandium was 87.67%. The comprehensive utilization of the valuable metals iron, titanium and scandium in the ore is realized, and the scandium concentrate can be used as the raw material for the further purification of scandium in the subsequent process.