CAJ | 학술논문

某细粒低品位铁矿石中磁铁矿与磁黄铁矿紧密共生，为了在回收磁铁矿的同时，综合回收伴生的磁黄铁矿资源，针对矿石性质特点，采用阶段磨矿-阶段弱磁选-一段磁选精矿浮选脱硫-二段磁选精矿反浮选提铁-反浮选尾矿再磨再选工艺流程，使用磁黄铁矿高效活化剂CS和铁矿反浮选新型阳离子捕收剂YA，获得了TFe品位70．05％、S含量0．16％、TFe回收率73．17％的高品位铁精矿和S品位25．86％、TFe含量50．10％、S回收率53．43％的硫精矿，有效实现了磁铁矿与磁黄铁矿的综合回收。
모세립저품위철광석중자철광여자황철광긴밀공생，위료재회수자철광적동시，종합회수반생적자황철광자원，침대광석성질특점，채용계단마광-계단약자선-일단자선정광부선탈류-이단자선정광반부선제철-반부선미광재마재선공예류정，사용자황철광고효활화제CS화철광반부선신형양리자포수제YA，획득료TFe품위70．05％、S함량0．16％、TFe회수솔73．17％적고품위철정광화S품위25．86％、TFe함량50．10％、S회수솔53．43％적류정광，유효실현료자철광여자황철광적종합회수。
As magnetite and pyrrhotite particles are closely intergrown in a low-grade fine-grained iron ore, beneficiation parameters were systematically investigated according to ore properties for comprehensively recovering magnetite and pyrrhotite. After a flowsheet of stage grinding and stage low intensity magnetic separation ( LIMS ) was introduced, pyrrhotite was recovered from concentrate of the first stage LIMS by flotation, while magnetite was reclaimed from concentrate of the second stage LIMS by reverse flotation from which the tailings was reground and refloated. Through the whole process a high-efficient activator, CS, was selected to modify pyrrhotite, and a new cationic collector, YA, was used for reverse flotation of magnetite. As a result, 73.17% TFe was recovered into a 70.05% TFe grade iron concentrate containing 0.16% S and a sulfur concentrate grading 25. 86% S at 53. 43% recovery with TFe content of 50. 10% was obtained, bringing in the effect of comprehensive recovery of magnetite and pyrrhotite.