A weak magnetic separation device for graded fluidization of strong magnetic minerals

Abstract

The invention discloses a classified and fluidized weak magnetic separation device for strongly magnetic minerals. The device comprises a support base, fluidized separation cavities I and II, threaded upright posts, a magnetic system support plate, rectangular open magnetic systems I and II, wherein the fluidized separation cavities I and II are arranged in sequence from front to back along the longitudinal direction of the support base, the threaded upright posts are fixedly installed at four corners of the support base, the magnetic system support plate is fixedly installed at the upper parts of the threaded upright posts by threaded connecting pieces, and the rectangular open magnetic systems I and II are installed on the bottom surface of the magnetic system support plate; the rectangular open magnetic system I is located just above the fluidized separation cavity II, and the rectangular open magnetic system II is located just above the fluidized separation cavity I; and a leaking screen is arranged at the abutting end of the fluidized separation cavities I and II, and a blower is connected to the front end of the fluidized separation cavity I by an air pipe. According to the fluidized magnetic separation device for classifying coarse fraction and micro-size fraction and separation on the same platform, the complexity of a process for treating fine iron ores can be reduced, the magnetic separation pertinence is enhanced, and magnetic separation of concentrates can be realized with high grade and high recovery rate.

Description

technical field [0001] The invention relates to a magnetic separation device for the same stage classification and fluidized separation of coarse and fine particle components in strong magnetic minerals. Different magnetic system structures are designed to sort materials with different particle sizes, which belongs to the suction of mining machinery. Type, weak magnetic separation equipment category. It has certain popularization and application value in the field of fine-grained iron ore industrial separation. Background technique [0002] At present, in the beneficiation process of iron ore and other strong magnetic minerals, in order to improve the grade of concentrate iron, the grinding-dry magnetic separation process is generally adopted. In this process, the separation degree of iron-containing mineral components is improved, which is beneficial in theory. for the improvement of magnetic separation efficiency. But at the same time, there is a big problem: in the grin...

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Problems solved by technology

But at the same time, there is a big problem: in the grinding process, it is inevitable that there will be overgrinding phenomenon to form fine-grained magnetic materials, because the probability of magnetic linkage between fine-grained and coarse-grained magnetic components is reduced (as the concentrate is carried The probability of extraction is reduced), and the drag force of other non-magnetic mineral components is increased, coupled with the backwardness of the sorting method and sorting process, resulting in the loss of this part of the magnetic material in the tailings without effective sorting. Great waste of material

The patent "CN201310124774.0" discloses a ring-shaped magnetic separation space. The magnetic system structure includes opposite-pole closed magnetic poles that provide background magnetic field strength and filling media. The magnetic concentrate is periodically brought out by adhering to the surface of the media. Magnetic separation space for collection, easy to block

Patent "CN201420279812.X", designed fluidized dry magnetic agglomeration re-election equipment for fine-grained magnetite, relying on magnetic components to form magnetic agglomeration in the magnetic field space, and the wind force, gravity and magnetic force work together to move obliquely downward to The magnetic material is discharged from the feeding port, but the magnetic agglomeration phenomenon of the fine-grained magnetic component material itself under the influence of wind is weak, so it will affect the separation effect

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