Magnetic separator-analyzer. RU patent 2246358.
 Magnetic separator-analyzer / 2246358Proposed separator includes magnetic system located under moving belt of conveyer around vertical axis; magnetic system consists of permanent magnets at alternating polarity over circle arc. Revolving magnetic system is located above moving belt of conveyer and distance between belt and inclination of axis of rotation may be changed vertically; magnetic fraction is unloaded by means of non-magnetic disk rotating together with magnetic system; this disk is located under magnetic system for change of distance to magnets. |
 Magnet separator for ferromagnetic materials with rotary roller with controlled slippage and corresponding method of operation / 2342198Magnet separator for ferromagnetic materials contains conveyer tape (1), which forms closed loop around magnet roller (2), and tension roller (3). Tension roller (3) is rotated by means of motor. Tape (1) is not wound directly on magnet roller (2), but on tension pipe (3'), made of nonmagnetic material, inside of which magnet roller (2) is installed, and in respect to which it may slip. Magnet separator contains facility for control of angle speed of magnet roller (2) in the range from 1% to 200% of angle speed of tape (1). According to suggested method for magnet separator operation, inside tension pipe (3') made of nonmagnetic material, magnet roller (2) is installed, in respect to which it may slip. Facility for control of magnet roller (2) angle speed is installed. Magnet roller (2) is rotated with angle speed that stays in the range from 1% to 200% of tape (1) angle speed. |
 Magnetic separator / 2344880Magnetic separator comprises two magnetic systems. Magnetic systems are arranged in the form of strips from rectangular prisms of neodymium-iron-boron containing alloys, which rotate around axis that passes through side faces into opposite sides. At the same time they rotate in horizontal plane for transfer of extracted magnetic material on non-magnetic plane with the possibility to change number of every drive rotations, and also to change distance from separator to transporters. |
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Magnetic separator-analyzer / 2246358 Proposed separator includes magnetic system located under moving belt of conveyer around vertical axis; magnetic system consists of permanent magnets at alternating polarity over circle arc. Revolving magnetic system is located above moving belt of conveyer and distance between belt and inclination of axis of rotation may be changed vertically; magnetic fraction is unloaded by means of non-magnetic disk rotating together with magnetic system; this disk is located under magnetic system for change of distance to magnets. |
 Electromagnetic separator / 2257956Separator includes apparatus for feeding raw material, unit for separating raw material in the form of plate with three-phase winding, trough with ferromagnetic layer in bottom mounted on elastic members. When apparatus for feeding raw material realizes working process of metering material, mechanically prepared mixture is fed in trough that performs rocking due to change of magnetic induction. Due to action of pondermotive forces magnetic particles float up to surface of layer moving downwards, they move towards traveling magnetic field and enter pipeline for products. Unit for separating raw material and trough are arranged by inclination angle α relative to horizontal plane. Inclination angle of trough and rigidity of elastic members may be adjusted. |
 Dust catcher / 2270724Dust catcher has cylindrical-conical casing with branch pipes for supplying dust and gas mixture, discharge of purified gas and discharge of dust, traveling electromagnetic field system, spiral gas guide, locking sleeve, and cellular core. Supports formed from non-ferromagnetic strips are set on casing internal surface, within zone adjacent to traveling magnetic field. Cellular core is provided between supports and spiral guide. |
 Dust catcher / 2271869The invention is pertaining to the field of iron and steel industry, in particular, to dust catchers used for purification of blast furnaces top gases from a dust. The invention ensures an increase of the dust-catching efficiency. The dust-catcher consists of a cylindrical-conical body with the branch-pipes for dust-gas mixture feeding, withdrawal of the gas and the dust discharge; an electromagnetic system of a dust trapping with the magnetic conductors, the cellular core made out of a ferromagnetic material. The dust catcher is additionally equipped with the stop ribs to be used for mounting of the dust catching electromagnetic system with the magnetic conductors and the cellular core, and for fixation of their position in the space. The branch-pipe for feeding of the dust-gas mixtures has a diffuser made out of the non-ferrous metal, the lower part of which is arranged on the level of the lower part of the cellular core. |
 Pneumoinductive separator / 2275247Invention is designed for separating cereal heaps namely for separating grain and seeds. Proposed pneumoinductive separator includes magnetic circuit in form of vertical cylinder with device for decreasing cross section of channel in upper part, feeder with supply branch pipe, and fan. Separator is furnished with pneumatic channel adjoining device for decreasing cross section of channel and made of nonmagnetic material, with diameter equal to 3/4 of diameter of magnetic circuit. The latter is made in form of set of coils different in number of turns providing 1.3-1.5 increase of strength of magnetic field in direction from bottom to top. |
 Method of the magnetic concentration and the device for the method realization / 2288039The invention is pertaining to the field of metal mining industry, in particular, to the magnetic concentration of the finely ground ores containing the strong-magnetic materials and allows to improve the quality of the concentrate. The method provides for the gating of the mash through the working area of the electromagnetic separator with the motionless drum, when the layer of the having flocculated and moving on the working surface particles of the concentrate under action of the traveling magnetic field are exposed to such a mechanical action at which the floccules are destroyed making themselves free from the nonmagnetic fractions, which are flushed away by the water sprays, then the freed thus magnetic particles again are formed in floccules and are withdrawn into the discharge zone. The device includes the body-bath with the conical bottom, the working tool made in the form of the vertical casing-shell with the rotating circular magnet system, which is arranged inside the casing-shell and based on the permanent magnets. On the exterior surface of the casing-shell along its generatrix there are the mounted nets made out of the nonmagnetic material with the mesh size exceeding the maximum size of the grains, but less than the dimension of the floccules along their long axis, and near to the nets the flashing collectors are mounted. For withdrawal of the layer of the floccules of the magnetic fraction the spiral guide is installed. |
 Device for magnetic separation of finely dispersed raw material / 2295392Proposed device may be used for separation admixtures possessing different magnetic properties from inert medium. Proposed device has taper vibrating feeder, separation chamber, revolving magnetic system made in form of hollow vertically oriented dielectric cylinder with permanent magnet units located radially along its axis. Separation chamber is made in form of hollow perforated cylinder located coaxially inside magnetic system; this cylinder is made from dielectric material and is provided with holes, 2-3 mm in diameter which are located in area of action of magnetic system. Fins wound spirally around perforated cylinder of separation chamber in way of holes; these fins are also made from dielectric material and their width is lesser than distance between inner perforated cylinder and magnetic system by 1-2 mm. |
 Pneumatic-induction separator / 2325233Pneumatic-induction separator consists of magnetic circuit in the form of the vertical cylinder with the device for decrease of the channel cross-section. There is a feeder with a pressure connection and the ventilating fan in the top part. The separator magnetic circuit is executed in the form of one coil reeled up on a carcase from the electro-insulating plastic, formed by a set of windings with different number of turns increasing from below upwards, connected in parallel. |
 Magnetic separator / 2365421Invention is related to the field of magnetic separation, namely, to devices for extraction of magnetic-susceptible particles from liquid mediums, and may be used in mining, metallurgical and other industries. Magnetic separator comprises body that hosts concentrically installed non-magnet drum and magnet system on permanent magnets with alternating polarity of poles and possibility of rotation, loading and unloading devices. Drum is installed with the possibility of rotation towards magnetic system with linear speed lower or equal to speed of pulp motion in working zone of separator. The following components are rigidly fixed on internal surface of body along with direction of pulp motion - arc-shaped plate made of electret-type material, for instance, polyurethane, blade deflectors with specified gap from drum surface and induction grid from magnetic soft material, for instance, steel, installed between unloading devices for discharge of slime and concentrate. |
 Dust extractor / 2368424Dust extractor includes cylinder-taper casing with branches for supply of powder-gas mixture, withdrawal of treated gas and discharge of dust, electromagnetic dust collection system, spiral guide of powder-gas mixture movement, cellular core, locking sleeve and rests, installed between barrel and cellular core. Dust extractor is implemented of top cylinder-taper butt with flange and branch for withdrawal of treated gas, dust catching unit with flanges and with branch for supply of powder-gas mixture and bottom cylinder-taper butt with flange and branch for dust withdrawal. Dust catching unit is assembled on separate stand in composition of cylinder with flanges and branches for supply of powder-gas mixture. On it on the outside it is installed electromagnetic system with magnetic conductors, inside there are installed spiral guide for movement of powder-gas mixture, rest of cellular core made of nonferromagnetic material, cellular core in the form of vertical strips made of ferromagnetic material, installed on-the-mitre to movement of powder-gas mixture, and locking sleeve. |
FIELD: concentration of minerals by magnetic separation.
SUBSTANCE: proposed separator includes magnetic system located under moving belt of conveyer around vertical axis; magnetic system consists of permanent magnets at alternating polarity over circle arc. Revolving magnetic system is located above moving belt of conveyer and distance between belt and inclination of axis of rotation may be changed vertically; magnetic fraction is unloaded by means of non-magnetic disk rotating together with magnetic system; this disk is located under magnetic system for change of distance to magnets.
EFFECT: selective separation of product into magnetic fractions in extensive range of their susceptibility.
2 dwg
The invention relates to the field of mineral processing method of magnetic separation.
There are various types of laboratory elektromagnitnykh separators with adjustable values of magnetic field strength in the zone of separation, which are used as separators analyzers [VV Karmazin, V.I. Karmazin Magnetic and electrical methods of enrichment. Moscow: Nedra, 1988].
Also known magnetic separator analyzer periodic action [inventor's certificate SU # 1651966, 03 1/06. Bull. No. 20 of 30.05.91], magnetic system which is made in the form of rotating around a vertical axis radially spaced permanent magnets under the non-magnetic plate with scattered thin layer of the analyzed mineral mixture.
A common shortcoming of these devices is the low productivity, work only in periodic mode and the low selectivity of separation. Closest to the proposed combination of essential features is the electrodynamic separator [inventor's certificate SU # 1139506, CL 03 With 1/24, bull. No. 6 from 15.02 1985, 3 C.] (prototype)containing transporting the body, the receivers separation products and the magnetic system is made in the form of a disk mounted for rotation and located under the conveyor body in a plane parallel to the plane of the latter, and on the working surface of the disk placed permanent magnets with alternating along the perimeter of the disk polarity of the poles.
The drawback to this unit is the impossibility of selective separation of mineral mixtures in magnetic properties with the aim of analyzing and then selecting the desired types of magnetic separators for industrial enrichment.
The technical result of the invention is the selective separation of the separated product on the magnetic fraction in the continuous mode, in a large range of magnetic vospriimchivosti and receiving masterbatch.
This technical result is achieved in that in the magnetic separator-analyzer containing rotating around the vertical axis of the magnetic system consisting of permanent magnets with alternating along the arc of a circle magnetic polarity, it is new that the magnetic system is located above the moving belt of the conveyor with the possibility of changing the distance to the tape vertically and tilt the axis of rotation, the unloading of the magnetic fraction is carried out by means of rotating together with the magnetic system of the magnetic disk located under the magnetic system with the possibility of changing the distance from the magnets.
The novelty of the proposed solution is that moving on the conveyor belt of the separated product initially enters the relatively weak alternating magnetic field, and then in a stronger, which leads to the separation of the magnetic fraction into two parts. The separator design analyzer allows you to obtain a magnetic fractions with different content useful product.
A schematic view of the separator-analyzer presented in figure 1 (side view) and figure 2 (top view). Above the conveyor belt 1 with the separated product 2 is the electric motor 3 with an adjustable number of turns on an axis which is fixed with two discs of non-magnetic material 4, 6. On the lower surface of the disc 4 on the perimeter of the fixed permanent magnets 5 in the form of rectangular prisms size 80-60-20 mm, from an alloy of Nd-Fe-B with alternating magnetic polarity. Under the disk 4 is the discharge disc 6 with the possibility of changing the distance between the disks using threaded rods 7. The whole system has the ability to change the vertical distance between the system and the surface of the conveyor and tilt angle α (0-15°) 8. On both sides of the belt are the receivers of the magnetic fractions of the separated product 9 and 10, provided with screens to prevent its spread by receivers (not shown).
Works separator analyzer as follows.
When moving conveyor belt with the separated product in the direction of the arrow 11 initially under the action of magnetic forces of the magnetic fraction is allocated 12 with the maximum values of the specific magnetic susceptibility (separation of magnetite ore mineral grains of magnetite, which is pressed against the lower surface of the rotating disk 6, acquires the angular velocity of rotation and the centrifugal force is discharged in the direction of the arrows 13 in the receiver of the magnetic fraction 9. Upon further movement of the separated product gets into the zone of action of magnets located at a closer distance to the surface of the disk 6 is attracted magnetic fraction with lower values of the specific magnetic susceptibility (separation of magnetite ores are grain, in addition to containing magnetite non-metallic minerals), which is discharged in the direction of arrows 14 in the receiver middlings 13.
Non-magnetic mass continues to move on the conveyor and enters the receiver tailings (not shown).
By changing the distance from the rotating disk to the surface of the conveyor, the angle of inclination of the system, the distance between the disks 4 and 5 and the rotation speed of the system you can get the products with the specified content of the magnetic mineral.
Advantages of magnetic separator analyzer are that it allows the extraction and separation of magnetic fraction into two parts with different (adjustable) content of usable magnetic product, including obtaining magnetic concentrates of high purity.
Tested working prototype separator analyzer on magnetitic ores Abakan field showed high efficiency of the enrichment process.
Magnetic separator-analyzer containing rotating around the vertical axis of the magnetic system consisting of permanent magnets with alternating along the arc of a circle magnetic polarity, characterized in that the magnetic system is located above the moving belt of the conveyor with the possibility of changing the distance to the tape vertically and tilt the axis of rotation, the unloading of the magnetic fraction is carried out by means of rotating together with the magnetic system of the magnetic disk located under the magnetic system with the possibility of changing the distance from the magnets.