某钛铁矿选矿工艺探索研究

Research on mineral processing technology for an ilmenite ore

摘要:

某地钛铁矿的嵌布粒度不均匀、脉石矿物角闪石因含钛铁矿或磁铁矿包裹体而磁性增强，钛的理论回收率仅65，左右．针对该矿的矿石性质，采用阶段磨矿阶段选别的工艺回收钛铁矿，即将原矿磨至53．37，－0．074 mm后，采用一粗一精强磁选获得钛粗精矿，粗精矿再磨至80，－0．074 mm后经二次强磁精选，一次中磁选脱铁．在原矿TiO2品位7．93，时，获得钛精矿TiO2品位48．10，、回收率45．82，的指标．

Abstract:

An ilmenite ore possesses the following properties :dissemination size of ilmenite is uneven ;the magnetism of gangue mineral hornblende is enhanced by ilmenite or magnetite inclusions in it ;the theoreti‐cal recovery rate of TiO2 is only about 65， .In view of these properties ,the stage grinding and the stage separation were used to recycle ilmenite .First ,the rough titanium concentrate was gained by one roughing and one cleaning for high‐intensity magnetic separation after the crude ore was grinded to 53 .37， -0 .074 mm .Then ,iron was removed via the second high‐magnetic separation and one medium‐magnetic separation after the rough ilmenite concentrate was grinded to 80， -0 .074mm .When the TiO2 grade of crude ore was 7 .93， ,ilmenite concentrate was obtained with TiO2 grade of 48 .10， and recovery of 45 .82， .