A kind of beneficiation process of iron-containing high silicate iron ore
A silicate and iron ore technology, applied in the field of mineral engineering, can solve problems such as low utilization efficiency of equipment, difficulty in grasping the balance point, poor sorting index, etc., and achieve comprehensive utilization of resources, low cost, and energy consumption little effect
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[0064] 1) The iron grade is only about 50%, SiO 2 The high-silicon-type strong magnetite concentrate with a content of about 15% is fed into the SLon centrifuge for gravity separation, which is a SLon-2400 continuous centrifuge. The separation process conditions are: centrifuge speed 250 rpm, jet pressure: 0.4 -0.5Mpa; Ore feeding concentration: 16.0%-17.0%; Washing water volume: 9.0L / min-11.0L / min; Separation time: 70s-80s for ore selection. After re-selection by centrifuge, about 61% iron grade, SiO 2 Iron concentrate with a content of about 5.7%.
[0065] 2) After concentrating and mixing the tailings produced by the centrifuge with a grade of about 37% and the second-stage strong magnetic tailings with an iron grade of 26%~28%, they are fed into the S1 tailing reduction process, firstly through SLon2000 Lihuan veins are subjected to strong magnetic separation, the magnetic field strength is 8000-10000 Oersted, and the grade of strong magnetic concentrate is more than 42%...
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