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高梯度磁选广泛应用于细粒弱磁性矿石的选矿,然而,多数情况下,该技术不能获得高品位的磁性精矿.鉴于此,提出一种新的高梯度磁选方法——离心高梯度磁选,用于分选细粒弱磁性矿石.本文介绍周期式离心高梯度磁选原理,并进行分选细粒钛铁矿试验研究;试验结果表明:周期式离心高梯度磁选可有效分选细粒钛铁矿,随磁介质转速上升,钛精矿的TiO2品位上升而TiO2回收率下降;磁感应强度变化时,这一变化趋势相反.当周期式离心高梯度磁选的操作因素为最佳时,对TiO2品位20.76%的细粒钛铁矿,可以获得TiO2品位和回收率分别超过30%和70%的钛精矿.因此,可以得出结论,离心高梯度磁选为细粒弱磁性矿石的选矿,提供了一种新的高梯度磁选技术.
However, in most cases, high-grade magnetic concentrates can not be obtained.Therefore, a new high-gradient magnetic separation method, called centrifugal gradient centrifugation Magnetic separation for the separation of fine-grained weak magnetic ore.This paper describes the principle of periodic centrifugal high-gradient magnetic separation, and fine-grained ilmenite experimental study; test results show that: cyclonic centrifugal gradient magnetic separation can be effective points Select fine ilmenite, with the magnetic media speed increases, TiO2 grade titanium dioxide recovery and recovery decreased; magnetic induction intensity changes, the opposite trend.When the cyclical centrifugal high gradient magnetic separation is the most operating factors Good time, the fine grade ilmenite with 20.76% TiO2 grade can be obtained with TiO2 grade and recovery of over 30% and 70% respectively.Thus, it can be concluded that the centrifugal high gradient magnetic separation is fine and weak Magnetic ore beneficiation, provides a new high gradient magnetic separation technology.