Continuous high gradient magnetic separator

Abstract

A high-gradient continuous magnetic separator for weakly magnetic small particles, has a separation ring composed of multiple separation chambers containing steel fibres and magnetic medium, and at least 4 pairs of C-shaped permanent magnets surrounding said separation ring. The said separation chamber has feed tube and washing water tube. Its advantages are simple structure and easy operation.

Description

technical field [0001] The invention relates to a continuous magnetic separation device, which is suitable for the separation of tiny particles under normal temperature and normal pressure conditions, and more suitable for high temperature and high pressure conditions and weak magnetic properties. Background technique [0002] Magnetic separation technology is not only widely used in the sewage treatment of mineral processing, steel mills and power plants, but also for the selective separation of particle systems in the coal industry, non-metallic industry, atomic energy industry, chemical industry, and especially in biotechnology. effective solution. In the process of biochemical separation, magnetic separation technology has many potential advantages compared with other separation technologies, and it is an important development direction of biochemical separation. [0003] When the magnetic particles are micron-sized or larger, the magnetic separation operation does not ...

AI Technical Summary

Problems solved by technology

Its disadvantages are: the use of electromagnets cannot generate high magnetic field strength, and it is difficult to separate ultrafine particles and weak magnetic particles; intermittent operation has low separation efficiency

But its disadvantages are: the use of electromagnets cannot generate high magnetic field strength; the separation chamber cannot be sealed, and the separation operation of high temperature, high pressure and volatile liquids cannot be performed

[0007] 2. During the two alternate operations of capture and release in high-gradient magnetic separation, it is required that the background magnetic field acting on the magnetic medium separation chamber can be switched between application and removal. Although it is convenient for the electromagnet to realize this operation, it consumes a lot of power , the equipment structure is complex, it needs to be equipped with a cooling system, the operation and maintenance costs are high, especially the low magnetic field strength generated by the electromagnet has become the biggest disadvantage in its use

Permanent magnets can generate high magnetic field strength, have the advantages of reliable operation, low price, no need for auxiliary equipment, convenient operation and maintenance, and energy saving. They have been valued and developed, but the magnetic field switching operation is more difficult.

[0008] 3. The current high-gradient magnetic separation equipment is generally only suitable for the separation of magnetic particles under low temperature, low pressure and normal temperature and normal pressure conditions. These devices, such as the Chinese patent "Continuous high-gradient magnetic separation method for separating magnetic particles from fluid Device" Patent No. 99107814.4, "Continuous Separation Device for Ultrafine Magnetic Particles in Catalytic Hydrodesulfurization Device" Patent No. 01120631.4

However, it is difficult to separate magnetic particles under high temperature and high pressure conditions.

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