METHOD OF PRODUCING HIGH-QUALITY CONCENTRATE FROM MAGNETITE QUARTZITES Russian patent published in 2002 - IPC

FIELD: wet magnetic concentration of minerals, mainly, finely disseminated iron ores processed at integrated mining and concentration plants. SUBSTANCE: method includes wet grinding of crushed ore, classification of ground product in hydrocyclones, magnetic hydroseparation (desliming) of hydrocyclone overflows, magnetic separation of hydroseparator sands. Hydrocyclone overflow and sands of magnetic hydroseparation (desliming) are subjected to magnetic activation including passing of suspension through holes of ferromagnets whose internal walls are constantly maintained in magnetized state by action of on-coming magnetic fields on said ferromagnets. EFFECT: low-cost production of low-silicon high-grade concentrate. 1 dwg