【Capacity】100-500 Kg/H
【Feeding Size】≤2mm
【Type】3PC-500, 3PC-600, final process of heavy mineral concentrate, improve the grade.
【Application】Dry magnetic separations of ilmenite, rare earth ore, chromite, tungsten and tin ores, limonite, columbium and tantalum ores, zircon, rutile, monazite, andalusite, garnet, kyanite, feldspar, quartz and other minerals with magnetic differences or removal of iron in nonmetallic minerals.
Three disk magnetic separation is first grouped according to magnetism, and all magnetic minerals are removed; The remaining non-magnetic mixture is then subjected to electrical selection, separated by differences in conductivity (universal solution for coastal heavy sand, zirconium titanium, tin tantalum niobium ore)
Pre processing of complete process → Three disk belt magnetic separator → Drying+classification → High voltage electric separator → Closed loop return of product+intermediate ore
- The mixed heavy sand for pre-treatment shall be screened and deslimed first, and the particle size shall be controlled at 0.06-0.3mm, so as to remove slimes and large blocks; If the wet concentrate from gravity separation (spiral chute/table) is ahead, it shall be dewatered and dried first to ensure that it is dry when entering the three-pan machine.
- Three-disk magnetic separator (three-stage gradient magnetic field)
Belt materials successively pass through 3 discs, and the magnetic field is from low to high:
Disk 1 (weak magnetism): selection of strong magnetic minerals (magnetite)
Disk 2 (medium magnetic): Selection of ilmenite and garnet
Disk 3 (strong magnetic): monazite and weakly magnetic iron impurities are selected
Belt end discharge [non-magnetic ore]
Non-magnetic materials such as zircon, rutile and cassiterite
Three magnetic products are collected separately; Only the non-magnetic materials at the tail end are sent to the electric separator, and the magnetic products are not sent to the electric separator, which will disturb the electric field, reduce the index and pollute the roller.
Secondary drying+grading (rigid requirements for electric separation) must be carried out after magnetic separation Electrical separation requirements: water content<0.5~1%, material heating 70~100 ℃, grading by particle size (separation of coarse and fine electric separation). High moisture mineral surface conductivity, complete failure of electro-separation.
The non-magnetic ore separated, dried and graded by the high-voltage electric separator is sent to the roller electric separator (20~30kV):
Conductor (rutile and cassiterite): quick discharge of electric field, thrown out of non-conductive (zircon) by centrifugal force: adsorption roller surface, scrapped by brush and collected by electric separation to produce conductor concentrate, non-conductive concentrate and middlings
Middlings from closed-circuit electric separation (mixed with poorly sorted materials)
Return to the feed inlet of three-disk magnetic separator for re-separation to improve the recovery rate.
