MAGNETIC GRAVITY SEPARATOR WITH FILTRATION DEVICE Russian patent published in 2020 - IPC B03C1/02 

FIELD: technological processes.

SUBSTANCE: present invention relates to the field of beneficiation of minerals, in particular to equipment for dressing highly magnetic ores, and can be used to improve the quality of finely dispersed ferromagnetic minerals and materials by reducing the weight fraction of silicon dioxide. Magnetic-gravitational separator includes cylinder-conical case made of nonmagnetic material, initial suspension supply device, devices for supply of flushing water and discharge of separation products, and magnetic system. Inside in separator housing upper cylindrical part filtration device is installed, which is located above the upper edge of the magnetic system and above the lower cut of the apparatus for feeding the initial suspension and is in form of a barrier-former from non-magnetic material with thickness of not less than 4 mm. Width of barrier shaper horizontally makes 100–200 mm. Barrier shaper is made in the form of a truncated hollow cone with height of 150–180 mm, wherein the lower large base is located above the level of location of the magnetic system and above the lower cut of the apparatus for feeding the initial suspension, and along the upper base circumference a hollow pipe out of nonmagnetic material is installed and fixed, at that, pipe radius is 20–40 mm. Barrier shaper is made in the form of a flat ring with a hollow tube of non-magnetic material, at that the pipe is installed and fixed from above along the inner edge of the ring, and the pipe radius is 20–40 mm. Barrier shaper is made in the form of a flat ring with width of 100–200 mm, besides, the ring has small flanging upwards by 20–40 mm.

EFFECT: obtaining high-quality magnetite concentrates with low weight fraction of silicon dioxide to 1_5 % and lower, as well as improving processing properties of the dressing process.

4 cl, 6 dwg