SU5454A1 - Magnetic Separator for Ores - Google Patents

Description

Magnetic separators are already known with the separation or selection of material in several places; in these separators, various places of separation or selection are formed by poles connected to one common magnetic core; the latter are mounted in two concentric circles, with one half of them being connected to one end of the magnetic core, the other half to its other end. In this case, all the poles are excited together using one coil covering the magnetic core. With such a device, each two poles of opposite polarity are located radially one against the other, rotating on all sides between all poles of the common root ring. Each two such poles are formed, therefore, two places of separation

or the selection of material, of which one is obtained between the outer pole and the ring, and the second between this last and inner pole. The anchor ring rotates in this case on the vertical central axis, as is usually adopted in annular cores, and on several rollers designed to protect it also from lateral vibrations. With such a device, it may happen that due to wear of the bearing surfaces of the rollers that guide the ring, the ring itself will very soon move eccentrically relative to the surface of the poles. The material separation producing fields are then located at different distances, and this separation, therefore, occurs unevenly. With a more significant eccentricity, contact between the ring and one pole may even occur, with the result that the ring is completely inhibited. Since in such a separator, the material is attracted only to the vertically located side surfaces of the ring, the possibility of making such separators with several different zones is excluded. Moving from top to bottom, through both air gaps of any place of extraction or separation, the material would stick not only to the root ring, but also to the poles. This material would become delayed, then, in the gap, an obstacle to the separation process. The lines of force pass through the measles at each pick or branch in the transverse direction from the north to the south pole. Formation of a flow of power lines passing through the bark from one place of separation of material to another and located between the two places of separation of the neutral zone is impossible, because then between the outer and inner poles of the adjacent places of separation or selection would pass two oppositely directed flows of lines of force that would mutually destroy each other. Other magnetic separators are also known, in which all poles, when they are jointly excited by one central coil, are adjacent to one end of the magnetic core, the other end of which is connected magnetically to a rotating core above the poles with different separation zones. , at the same time, common for them to take away the selected material body. Such separators, in which only the poles of the same polarity follow each other in a circle, have the disadvantage that the attracted material is difficult to remove from the core, since this device does not completely lose its magnetism in the space between the poles.

In each place of separation or selection of materials of the proposed separator, there is only one pole, and there is measles, common to all or at least two poles, located above the poles, so that in each place of selection or separation of material a magnetic field is formed by one pole and a core. The poles of adjacent material separation points are connected to opposite ends of a common, excited by a single coil, magnetic core. The poles of the adjacent places of separation of the material are, therefore, the poles of the opposite polarity. All poles act on the same surface of the common core. The lines of force pass through the bark between the poles of adjacent places of material separation in the direction of its circumference or in its longitudinal direction.

Such a design of the proposed separator is intended to obtain the following results. It can be applied both to ring separators and to those in which the floor separating the material separating the material follow each other along a straight line, i.e. material selection and with a general conveyor belt. Ring separators, as well as belt separators of the described construction, can be made in the form of separators with several different zones of material separation. Since in this case the successive poles formed in the crust have opposite polarity, there is always a place between every two poles in the crust in which the magnetic field strength is zero. At this point, the attracted material will therefore easily lag behind.

FIG. 1 shows a longitudinal section of the proposed magnetic separator for ores operating in the wet with several

separation zones and in fig. 2 shows his plan view. FIG. 3, 4 and 5 depict the modification of the proposed ore separator when operating with a tape, wet method, with several zones of material separation, namely: in FIG. 3 is a longitudinal sectional view thereof; FIG. 4 shows it in the plan and in FIG. 5 is a side view of it.

The magnetic core 2 of the proposed separator (Fig. 1 and 2) being excited by means of the coil 1 (Fig. 1) is added, or the poles 3 are attached in some other way. On the magnetic core 2 sits the upper part 4 of the magnetic base, the pole 5 which are located in a circle between the poles 3 in such a way that the negative pole of one end of the magnetic tip is always followed by the negative pole of its other end, or, in other words, in such a way that the resulting consecutive poles have opposite polarity. Above the poles, the total measles rotates, consisting of a core disc b and core rings 7. Ore dregs are fed into the funnel 8 and hence along the cone 9 and the guide sheets 10 flows under the root rings 7, which are set in height against the poles in such a way that the inner ring is furthest from the poles and can therefore attract only the material with the highest magnetic permeability, while the outer ring is closest to the poles and therefore attracts only the material with the lowest magnetic permeability. The unclean chickpea part of the ore turbidity flows through box 11. As between each positive and negative pole in the crust there should be a place devoid of magnetism, then in this place attracted by separate annular zones 7 material types disappear, and the material is obtained, therefore, divided into certain zones .

In a modification of the proposed separator (FIGS. 3, 4 and 5), the magnetic core 2 is excited by the coil 1 and the poles 3 are seated 3. The upper part 4 of the magnetic bed carries poles 5. In this case too, the poles of one end of the core are offset from the poles of the other end of the same core, that every successive two poles have opposite polarity. Over each two poles there is a measles 12, which is made with several different zones, under which an endless transporting tape 13 passes, which serves for removal of separated material. The ore dregs are fed into box 14, from which it passes under the said tape in a direction transverse to it above the poles, so that the magnetic material is diverted from the conveyor belt into boxes 15, the non-magnetic part of the ore turbidity is removed through boxes 16. In this case, the poles are divided into two rows, so that every two poles work with its conveyor belt. It is possible, however, to perform such a magnetic bed arrangement, in which, under central excitation, all poles are located in one row and every two consecutive poles have an opposite polarity. The present invention is intended to be applied both to wet and dry separators.

The subject of the patent.

1. Magnetic separator for ores with the separation of material in several places, consisting of a magnetic core, core and poles with the excitation of the latter using a coil embracing the magnetic core, characterized in that alternating poles 3 and 5 are connected with the corresponding ends of one magnetic core have opposite polarity

(Fig. 1 and 2) and act on one surface of the core they all share. 2. The form of the magnetic separator specified in paragraph 1, characterized in that the measles are made mobile on the axis (or with it) in height.

3. Modification of the magnetic separator indicated in paragraphs 1 and 2, characterized in that the magnetic separator is equipped with a fixed crust 12 and endless ribbons 13 for removing the magnetic particles of the ore (Figs. 3, 4, 5).

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