High-gradient magnetic separator of oil-cooled rotary disc

Abstract

The invention discloses a high-gradient magnetic separator of an oil-cooled rotary disc. The high-gradient magnetic separator comprises a magnetic system, a separating rotary disc, a feeding and discharging device, an oil tank and an oil circulation cooling device, wherein an excitation coil of the magnetic system is prepared by winding a flat aluminum wire and arranged in the oil tank connected with a cooling system; an iron core is a pure iron square iron core; an upper end face and a lower end face of the iron core are connected with one end of an upper magnetic yoke and one end of a lower magnetic yoke respectively; the other ends of the upper magnetic yoke and the lower magnetic yoke are connected with an upper magnetic pole head and a lower magnetic pole head which are opposite to each other respectively; a magnetic system air gap is reserved between the upper magnetic pole head and the lower magnetic pole head; a feeding hopper of the feeding device is arranged on a side face of the upper magnetic pole head which is vertically arranged; a flat feeding nozzle which is communicated with the feeding hopper is extended into the magnetic system air gap and closely attached to the lower end face of the upper magnetic pole head, and the lower part of the feeding device is a separating rotary disc which is horizontally mounted; and the discharging device is arranged at the bottom of the separating rotary disc. The magnetic separator has the characteristics of low cost, low energy consumption, low excitation power, good cooling effect, uniform magnetic field in a selected region, stable work, good separating effect and capability of realizing continuous beneficiation of metal mine and non-metal mine with fine granularity and weak magnetic property and the like.

Description

【Technical field】 [0001] The invention relates to a magnetic separation equipment for metal minerals, in particular to an oil-cooled turntable high-gradient magnetic separation machine. 【Background technique】 [0002] At present, the general magnetic separator in China can only sort minerals with a particle size of +200 mesh (0.074mm), and cannot separate a large number of existing fine-grained and weakly magnetic minerals. The high-gradient magnetic separators capable of sorting this kind of minerals are generally ironless magnetic separators. The magnetic separators with ironless magnetic systems have the sorting area in the center of the coil, and it is inconvenient to move the sorting box in and out, so it is not convenient It is easy to realize continuous beneficiation. Sarah's rotary high-gradient magnetic separator adopts the shape of the coil to be bent into a saddle shape, and the sorting ring passes through the saddle-shaped coil, which solves the problem of conti...

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Problems solved by technology

[0003] 1. The excitation coil is wound by a hollow square soft copper tube. The coil is passed through a large current, and the outside is wrapped with a thick iron plate to prevent magnetic flux leakage. Due to the large excitation power of the excitation coil, it consumes a lot of energy, and the manufacturing process is complicated. Difficulty, consumables, increase the cost of the electric control cabinet and the whole machine

[0004] 2. The machine adopts the way of circulating cold water in the copper tube to dissipate heat, which consumes a lot of water resources for cooling

[0005] 3. In order to make the ore flow direction parallel to the magnetic field line, the feed and discharge of the machine need to open several round holes on the thick iron plate armored on the upper and lower poles of the magnetic separator coil to insert copper pipes, and the ore slurry passes through the hopper. The upper part of the copper tube enters the sorting box and flows out from the lower copper tube. The result of this is: first, the impact and wear of the ore pulp on the magnetic-conductive stainless steel mesh of the magnetic gathering medium in the sorting box is large, and the production cost increases; the second is to prevent The ore pulp overflows from the upper and lower sides of the magnetic gathering box, and leak-proof rubber sealing rings must be installed on the upper and lower edges of the magnetic gathering box. Due to the rapid wear of the rubber sealing ring and frequent shutdowns and replacements, it directly affects production efficiency and increases the difficulty of manufacturing; the third is Since it is necessary to open a number of round holes on the thick iron plate armored on the upper and lower poles of the magnetic separator coil to insert copper pipes, the magnetic field lines of the entire magnetic field will be distorted and the separation effect will be affected.

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