Vertical ring magnetic separator for removing iron from fly ash

Abstract

The invention discloses a vertical ring magnetic separator for removing iron from fly ash, which comprises a rotating ring, an induction medium, an upper iron yoke, a lower iron yoke, an excitation coil, a feeding opening, a tailing hopper and a washing device, wherein the induction medium is arranged in the rotating ring; the excitation coil is arranged around the upper iron yoke and the lower iron yoke to make the upper iron yoke and the lower yoke into a pair of magnetic poles forming vertical magnetic fields; the upper iron yoke and the lower iron yoke are arranged on a ring inner side and a ring outer side below the rotating ring respectively; the induction medium is a multi-layer steel plate mesh; each layer of steel plate mesh is woven by cut wires; the edges of the cut wires have prismatic closed angles; the upper iron yoke is connected with the feeding opening; the lower iron yoke is connected with the tailing hopper for discharging; and the washing device is positioned above the rotating ring. When the vertical ring magnetic separator is used, the iron removal effect is improved by 20 percent, the effective iron removing efficiency is improved to 80 percent from the original 60 percent, a solution iron removal pressure in a subsequent process is relieved, the production cost is lowered, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a magnetic separation device, in particular to a vertical ring magnetic separation machine for removing iron from fly ash. Background technique [0002] At present, the structural design of the vertical ring is aimed at magnetic separation rather than iron removal. The magnetic medium used in the original equipment is a cylindrical dielectric rod. In the process of ash iron removal, there may be some particles with fine particle size and weak magnetism that will not be adsorbed through the magnetic medium, which will reduce the iron removal effect. [0003] First, the purpose of the current vertical ring magnetic separator is to select iron from weakly magnetic iron ores, and ultimately iron ores with a certain grade need to be selected. Therefore, the design of structure and magnetic field strength is mainly for iron selection. Not iron removal. The vertical ring magnetic separator adopts a round bar-shaped stainless steel m...

AI Technical Summary

Problems solved by technology

However, in the process of removing iron from fly ash, since the magnetism of iron minerals is very weak, if the feeding method is adopted, iron minerals may pass through the medium under the action of gravity without being adsorbed, which reduces the efficiency of magnetic separation. Effect

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