江西某石英砂精矿再除铁试验研究

江西某石英砂精矿含铁0.012%, 为进一步降低精矿含铁量, 采用高梯度磁选法, 研究了磁场强度、脉动冲次、给矿浓度及磁介质对石英砂除铁效果的影响。试验结果表明, 采用最新研制的SLon(1.8 T)立环脉动高梯度磁选机, 在磁场强度1.8 T、磁介质棒直径1.5 mm、脉动冲次50 r/min、给矿浓度25%的条件下获得了作业产率92.77%、含铁0.0077%的石英砂精矿, 经济效益和社会效益显著。

Further Reducing of Iron Content in Quartz Sand Concentrate from Jiangxi with HGMS Technique

High gradient magnetic separation (HGMS) process was introduced to reduce further the iron content of the quartz sand concentrate containing 0.012% iron from Jiangxi. The influences of magnetic field intensity (MFI), pulsating frequency (PF), feed concentration (FC) and magnetic medium (MM) on iron-removal efficiency were investigated. The results show that the latest-developed SLon (1.8 T) vertical ring pulsating high gradient magnetic separator operated under optimized parameters such as MFI of 1.8 T, PF of 50 r/min, FC of 25% and MM rod diameter of 1.5 mm, results in a quartz sand concentrate with a process yield of 92.77% and iron content of 0.0077%, which can bring significant economic and social benefits.