Permanent magnet high-field intensity magnetic filter

Abstract

The invention relates to a permanentmagnet magnetic filter with high field intensity, and is characterized in that the magnetic filter comprises a plurality of permanentmagnet rings (8) and a main magnetic system (25), wherein the permanentmagnet rings (8) are connected in series on a coaxial-line, and the main magnetic system (25) is composed of high permeability yoke pieces (9) extrudedbetween every two permanentmagnet rings mutually overlapped; the inner ring cavity of each permanentmagnet ring (8) is used as a sorting space, and the magnetic rings on both sides of the same yoke piece (9) have the same polarity; and the outer ring faces surrounding the permanentmagnet rings are armed by a plurality of fan-shaped magnetic steel pieces to form auxiliary magnetic poles (26), and every magnetic ring is extruded by the upper, the lower and the outer faces so as to improve the magnetic flux of the sorting space, thereby gaining high magnetic-field intensity. As the inner ring cavity of each permanentmagnet ring is used as the sorting space and the closure magnetic system is formed by the trilateral homopolar extrusion technology in the design of the magnetic system, the magnetic-field intensity on the central axis of the sorting cavity can be ensured to be 1.3T.

Description

technical field [0001] The invention relates to magnetic separator technology, in particular to a permanent magnet high-field magnetic filter. The magnetic filter can be used for the purification of weak magnetic mineral powder, or for the analysis of magnetic mineral content in ore, and can also be used for the production of magnetized water, etc. Background technique [0002] In view of the fact that the permanent magnet system does not require excitation power consumption and cooling system, and has stable performance, compact and simple structure, low energy consumption in operation, convenient operation and maintenance, etc., the permanent magnetization of electromagnetic equipment is the relentless pursuit of people. The advent of performance NdFeB permanent magnet materials provides the basis for this. At present, almost all weak-field magnetic separation equipment and most medium-field-strength magnetic separators use permanent magnet systems, but high-field-strengt...

AI Technical Summary

Problems solved by technology

[0010] To sum up, most of the current permanent magnet strong magnetic separators adopt a closed-circuit magnetic system structure, and the separation space is constructed by two or more separate magnets. Magnetic technology, but the field strength in the sorting area is mostly below 1T, which is difficult to meet the needs of sorting weak magnetic powders, and the design of the magnetic system needs to be further optimized

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