Reasonable structure, unique principle, be selected as rental equipment discarded tailings qualified, can obtain a high-grade iron ore concentrate as selection of magnetic equipment, compared with the conventional magnetic separation column, a particle size range may be widened to 0 ~ mine 0.7mm, water consumption is reduced by about 40%, and economic and technical indicators are good.
Jin Liu et al described research super iron ore concentrate vertical extraction pulse separator which utilizes a novel electromagnetic field-weakening magnetic ferromagnetic heavy mineral processing equipment to solve the problem of magnetic agglomeration inclusions, adapted ferromagnetic mineral fraction It is specially selected for purification and is especially suitable for magnetic selection. The working process is as follows: the ferromagnetic particles form an elongated transverse flux linkage in the pulsed oscillating magnetic field generated by the magnetic field, and the elongated transverse flux linkage generates an agglomeration-loose alternating process under the action of the pulsed oscillating magnetic field. Ten times, in the process of sedimentation, it is subjected to the reverse rise of the cleaning water flow, and the gangue and the continuum which are mixed with it are continuously removed, and the purification is continuously obtained. The gangue and continuous body move upwards under the action of rising water flow and form a tailings through the overflow weir. The high-grade magnetic concentrate moves downward through the grit outlet. Under the condition of 62.00% of iron ore grade, a super iron concentrate with a concentrate grade of 71.86% and a recovery rate of 50.78% was obtained.
Yuan Zhitao and others introduced the composition, basic principles of the composite magnetic field selection machine and the sorting results for small experiments and practical applications in a mine laboratory in Dandong. The composite magnetic field selection machine is mainly composed of a sorting unit, that is, a sorting column and a control unit. The sorting column includes a sorting cylinder and a magnetic system. The upper part of the sorting cylinder has an overflow tank and a feeding pipe, and the bottom has a flushing water pipe and a sanding port. The magnetic system of the device is composed of a plurality of coils, the magnetic field formed by the partial coils is constant, and the magnetic field formed by the remaining coils is pulsating, thereby A complex magnetic field is formed in the sorting zone. The magnetic system consists of five coils arranged from top to bottom. The control unit is used to generate a complex magnetic field inside the magnetic system. Φ600mm composite magnetic field selection machine sorts iron concentrate with iron grade of about 60.00%, and can obtain 62.60% of iron concentrate with iron grade and tailings of 12.00%, which has achieved good results.
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