Non-contact magnetic spinning apparatus

Abstract

The invention relates to a non-contact magnetic spinning apparatus, which allows condensation, dehydration and feeding to be realized through a manner that magnetic material particles or floccules are subjected to migration, aggregation, and extrusion by magnetic force of toroidal magnetic fields changing in a strong-weak alternation way. The apparatus is characterized in that: the apparatus comprises a charge cavity, a magnetomotive cavity, a discharge cavity and at least a pair of permanent magnetic rollers rotating reversely; the charge cavity is communicated with the magnetomotive cavity and the discharge cavity in sequence; and the paired permanent magnetic rollers, which are arranged on the outer of both side walls of the magnetomotive cavity, generate toroidal alternate magnetic force in the magnetomotive cavity. Non-contact condensation, dehydration and feeding are carried out on the magnetic materials through the toroidal alternate magnetic force, so the apparatus has the advantages of simple method, easy manufacture, low cost, strong impact load resistance and good processing effect.

Description

technical field [0001] The invention relates to a non-contact magnetic spinning method and device, in particular to a method and device for squeezing, concentrating, dehydrating and feeding magnetic substances containing water, and belongs to the technical field of magnetic separation applications. Background technique [0002] In the fields of metallurgical wastewater treatment and mineral processing, it is often necessary to concentrate and dehydrate the aqueous sludge mainly composed of magnetic particles or flocs produced in the production process. The known methods are plate and frame filter press, belt filter press, centrifugal dehydration and the like. Although the purpose of concentration and dehydration can be achieved, in these methods, the plate and frame filter press occupies a large area, and most of them are discontinuous dehydration, and the backwash water consumption of the belt filter press is large, the filter belt is easily blocked, and the noise of centri...

AI Technical Summary

Problems solved by technology

The principle of this dehydration method is simple, and it utilizes the magnetic adsorption effect of the magnet on the magnetic substance. The cylinder has only one press contact surface above the water surface, so the utilization rate of the magnet is low. At the same time, the pressure roller and the magnetic cylinder are easy to wear, the dehydration capacity is relatively low, and the slag with weak magnetism can be discharged with the filtrate, so the filtrate contains a large amount of slag. ; On the other hand, the flow channel of the magnetic suction cylinder is narrow. In actual use, when the amount of slag changes greatly, it is easy to block the slag water inlet and cause the slag water to turn out of the equipment. The impact load resistance is relatively low.

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