Experimental study on recovering feldspar from a rare metal tailing

In this paper,the mineral composition,size distribution and dissemination relation of a rare metal tailing were studied first.Then on the basis of the tailing′s properties,condition tests including process flow-sheet,grinding fineness and collector selection were carried out to evaluate the effects on the separation of feldspar and quartz.At last,under acidic conditions,by using the self-made anionic collector EZ-2and cationic collector dodecylamine,feldspar concentrates containing 17.12%Al₂O₃,3.27%K₂O,8.26%Na₂O,0.11%Fe₂O₃and quartz concentrates containing 96.07%SiO₂,0.02%Fe₂O₃ were obtained from the rare metal tailing.Besides the efficient utilization of the tailing,new collector EZ-2performed well in separating feldspar and quartz,thus its application field was broadened.