DRUM FOR THE MAGNETIC SEPARATOR AND THE METHOD OF ITS MANUFACTURE Russian patent published in 2017 - IPC B03C1/14 

FIELD: machine engineering.

SUBSTANCE: magnetic separator drum contains a cylinder of ferromagnetic material closed at its ends with two flanges that have central rods equipped with bearing and clamping points, on the outer side of the cylinder, a plurality of longitudinal grooves are formed, accommodating permanent magnets arranged in the form of longitudinal rows of one polarity along the magnetic arc approximately 130-160° with alternating polarity NS between adjacent rows. The central rods are located along the longitudinal axis of the cylinder. The cylinder is located within the shell of a non-magnetic material, closed at its ends by two flanges, which have flanged bushings provided with places for mentioned bearings. At least one of the flanged bushings is also provided with means for receiving from the motor of motion to drive the sheath in the form of a gear wheel. The length of one dipole of the magnetic circuit is in the interval between 100 and 150 mm, Is preferably 127 mm. The method of manufacturing a drum for a magnetic separator includes the following steps: a) welding of the flange-covers at the ends of the cylinder; B) fixing the rods around the center of the flanges; C) machining of the cylinder on a lathe to achieve precise alignment of the rods to the outside of the cylinder and the formation of bearing and clamping points on the rods; D) milling of longitudinal grooves on the outside of the cylinder; E) fixing magnets in the grooves; F) the introduction of a cylinder inside the shell and the hermetic mounting of the flanges of the latter. In step d), the grooves are formed at a distance so that the length of one dipole of the magnetic circuit is between 100 and 150 mm.

EFFECT: improving separation efficiency.

19 cl, 3 dwg