关键词: CH-CXJ63型淘洗磁选机, 工艺优化, 降耗增效

Abstract: The iron ore somewhere in Shandong was fine disseminated,with various complex iron minerals while mainly magnetite.Iron concentrate with iron grade merely 65.68% was achieved through a long separation process of one wet coarse magnetic pre-concentration，three-stage grindings of 91.25% passing -0.044 mm，five-stage low-intensity magnetic separations.Shunt sorting test was carried out by using CH-CXJ63 type elputriation magnetic separator in order to explore the new process of cost decrease and efficiency increase.And on-site process was optimized.The results showed that ①Through the separation of secondary grinding-separation concentrate by using CH-CXJ series elputriation magnetic separator，iron grade of iron concentrate was increased by 0.20 percentage point and iron recovery lowered by 0.16 percentage point than on-site process，which simplified the process and reduced the production costs.②Through the separation of third-stage grinding-classification overflow by using CH-CXJ63 type elputriation magnetic separator，iron concentrate with iron grade and recovery about 3 percentage point higher than on-site process was obtained respectively.The iron concentrate obtained from latter process with high quality and less metal loss，thus has more competitive advantages.

Key words: CH-CXJ63 type elputriation magnetic separator, Process optimization, Consumption reduction and efficiency increase