In order to reduce the production cost of the west concentrator of Tieshan Mine,Wuyang Mining Industry,Henan Angang Group,based on the process mineralogy analysis of the ore,the pre-con-centration tailings discarding-stage grinding stage low intensity magnetic separation test is carried out.The results show that the total iron grade of the raw ore is 25.26%,the magnetic iron grade is 16.65%,the con-tent of other useful elements is low,and the content of sulfur and phosphorus is low,which belongs to acidic iron ore.The iron concentrate with total iron grade of 68.87%,total iron recovery of 65.89%and magnetic iron recovery of 98.37%can be obtained under the conditions of pre-concentration magnetic field intensity of 320 kA/m,first-stage grinding fineness of-0.076 mm of 55%,first-stage low intensity magnetic separa-tion magnetic field intensity of 160 kA/m,second-stage grinding fineness of-0.076 mm of 70%,second-stage low intensity magnetic roughing and cleaning magnetic field intensity of 160 kA/m and 144 kA/m,re-spectively.
magnetitepre-discarding tailingsstage grinding stage low intensity magnetic separation
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