METHOD OF A MAGNETIC SEPARATION OF LOW-MAGNETIC MATERIALS AND A DEVICE FOR ITS REALIZATION Russian patent published in 2005 - IPC

FIELD: mining industry; glass industry; chemical industry; ceramic and other branches of industry; the methods and devices for a magnetic separation of low-magnetic materials.

SUBSTANCE: the invention is pertaining to a magnetic separation of low-magnetic materials in mining, glass, chemical, ceramic and other industries. The method of a magnetic separation of the low-magnetic materials provides for: feeding of the separated material to the elongated ferromagnetic bodies inclined in respect to a vertical plane and mounted with a backlash and in parallel to each other; the further motion of the material along the elongated ferromagnetic bodies in the magnetic field, gradient of which acts in direction opposite to direction of gravity and depends on the geometric form and magnetic properties of the elongated ferromagnetic bodies; separation of the material in the magnetic field for magnetic and nonmagnetic fractions; drop under action of gravity of the nonmagnetic fraction of the material downwards through backlashes between the adjacent elongated ferromagnetic bodies; the further relocation of the magnetic fraction of the material along the elongated ferromagnetic bodies in a direction of its discharge at the outlet from the zone of action of the magnetic forces. Relocation of the separated material is conducted directly in the backlash between the elongated ferromagnetic bodies in the magnetic field, the magnetic displacement vector of which is directed at the right angle to the dilatational plane of symmetry of the adjacent elongated ferromagnetic bodies, which in whole or in part are the sources of the magnetic field for each pair of the adjacent elongated ferromagnetic bodies. The device has at least two similar inclined to a vertical plane elongated ferromagnetic bodies, installed with a backlash and in parallel to each other and the source of the magnetic field, the gradient of which in the backlash between the elongated ferromagnetic bodies is directed in parallel to the plane of symmetry, which separates the adjacent elongated ferromagnetic bodies. Each elongated ferromagnetic body or a part of it is made out of the permanent magnets being the sources of the magnetic field for each pair of adjacent elongated ferromagnetic bodies. The technical result: increased effectiveness of separation of the low-magnetic materials due to formation of a magnetic line barrier at most meeting the conditions of separation of the particular material.

EFFECT: the invention ensures increased effectiveness of separation of the low-magnetic materials due to formation of a magnetic line barrier at most meeting the conditions of separation of the particular material.

17 cl, 17 dwg