THE LABORATORY INVESTIGATIONS OF WET MAGNETIC SEPARATION OF THE PRIMARY CONCENTRATES FROM THE SIBERIAN IRON-ORE DEPOSITS

Abstract

In this paper the results of the investigations of the wet laboratory separation of the primary concentrates from the Siberian iron-ore deposits (raw materials of Abagurskya concentrating mill –“Evrazruda” JSC) are shown. Wet magnetic analysis has been carried out on nine samples (0.07 mm class) of two ores types – magnetite and sub-acidulate at the magnetic field (H = 80 kA/m) ores. The quantity of the obtained largest magnetic product output is above 68 % (Abakan) for magnetite ores and 43 – 45 % for sub-acidulate ores, i.e. the yield diminishes with a decrease of the magnetite content at the initial material. Practical guidelines: it is appropriate to concentrate sub-acidulate ores at the common charge with the magnetite ores to decrease the losses of the iron with tailings; it is necessary to complete the reconstruction of the magnetic systems of PBM 90/250 separators with using the high-insensitive magnets.