SU1331564A1 - Magnetic separator - Google Patents

Abstract

The invention relates to the enrichment of minerals and, in particular, m. applied in the foundry industry for the separation of mixtures containing inclusions of weakly magnetic particles. The purpose of the invention is to increase the purity of the magnetic product and reduce its loss. The stationary I and swivel 2 frame () of the separator are connected by semiaxes 3 and BUHTOBbiNm jacks 4, Drive I Waraban 5 and Drive 6 are installed on P I, tension drum 7 on P 2, and under the inclined upper branch of the endless conveyor belt (CL) 13 - magnetic system 8 with pole lugs 9, Sloping rows on CL 13 secured pins (W), Lipney connecting the edge of W each of the rows, are located at an acute angle to the axis of symmetry of CL 13 in the direction of its movement. Rd of W posted § (L / 5 00 oo a la 4

Description

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on the one hand, the axis of symmetry is located with respect to the rows of Ш, located on the other side of it. The distance between two adjacent rows located on the same side of the axis of symmetry of CL 13 is not greater than the length of tips 9. Rows Ш can be located along a straight line or arc-like bulge in the area of lugs 9 towards the slope of the gearbox 13. The height of W in the row decreases consistently in the direction of the slope of CL 13, and the surface of each W increases successively in the direction of the slope of CL 13. When KP 13 moves clockwise

one

The invention relates to the field of mineral processing and, in particular, can be applied in the foundry industry for the separation of mixtures containing inclusions of weakly magnetic particles.

The purpose of the invention is to increase the purity of the magnetic product and reduce its loss.

1 shows a separator, side view; figure 2 is a view of And figure 1; figure 3 - node I in Fig .; figure 4 - location pin on the tape, option.

The magnetic separator contains a fixed 1 and a rotary 2 frames interconnected by means of axles 3 and screw jacks 4. On the frame 1 there is a drive drum 5 and an actuator 6. On the frame 2 there are a tension drum 7 and a magnetic system 8 with pole pieces 9. B holders x 10 rollers 11 and 12 are mounted.

On the endless belt 13 there are fastened straps 14, which are arranged on the belt in oblique rows. In this case, the lines connecting the extreme pins of each of the rows are located at an acute angle to the axis of symmetry of the tape in the direction of its movement, and the rows of pins located on one side of the axis of symmetry of the tape are offset from the rows of pin attached to the other. its sides and the distance between

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The arrow and the excitation of the system 8 non-magnetic particles of the mixture are moved down and unloaded into the hopper 16, the magnetic particles are pressed to CL 13 and transferred to the hopper 15. Particles with weak magnetic properties fall into the region of the working zone with low magnetic forces. Then, they are moved down, picked up by magnetized W of the nearest row, and carried into the bunker 15 or shifted along the row of W, fall into the region of increased magnetic forces and are carried into the bunker 15. 5 3.p. f-ly, 4 ill.

two adjacent rows, placed on the same side of the axis of symmetry of the tape, are not greater than the length of the pole pieces. Rows of pins may be located in a straight line or arcuate convexity in the area of pole pieces toward the slope of the tape. I

The angle of inclination of the line of pins relative to the longitudinal axis of the tape 13 is established, based on the movement of non-metallic particles of the mixture along the row, and is practically 20-60 °. The height of the pins in the row decreases successively towards the slope of the tape, and the surface of each of the pins facing the direction of the movement of the tape forms an obtuse angle with the tape. The angle of inclination of the surface of each pin increases sequentially in the direction of the slope of the tape. Dp of collecting magnetic bodies serves as a bunker 15, and for collecting tailings - a bunker 16.

The separator works as follows.

Through screw jacks 4, frame 2 is installed in such a way that pole pieces 9 are located at an angle of 20-60 to the horizontal. The belt 13 is driven clockwise according to FIG. The excitation of the magnetic system 8 leads to the creation in the working area of an intense magnetic field, due to

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What are the magnets magnetized. The initial mixture is fed into the working area.

The non-magnetic components of the mixture under the action of gravity move down and unload into the hopper 16. At the same time, small particles have the opportunity to pass between the pins 14, and large particles either jump over the pins due to their large initial speed and because the surface of each of the pins facing the belt, forms an obtuse angle with it, or moves along the row of pins and into the bunker 16,

The magnetic particles of the mixture, falling on the tape 13, are pressed to the tape by the magnetic forces acting on them and carried to the hopper 15. If a particle with weak magnetic properties falls into the working area with low magnetic forces, it does not hold on the tape and moves way down. The nearest row of pins either picks up the particle and removes it from the working area due to additional mechanical and magnetic forces, or the particle shifts along the row of pins and enters the region of increased magnetic forces and then is carried to the hopper 15.

The location of the pins in straight rows ensures equality of the rolling forces acting on the particles along the entire row, which improves the unloading of non-magnetic bodies.

Figure 4 shows a variant of the arrangement of the rows of pins 14 on the tape 13. The pins are arranged in curvilinear rows, the concave side of which is directed towards the movement of the tape. This arrangement of the pins contributes to the retention of weakly-magnetic particles, since the rolling forces acting on the particles along the row of pins are maximum at the beginning of the row and decrease towards its end.

Satisfactory unloading of non-magnetic bodies can be achieved by using pins with variable heights or angles of inclination of their working surfaces. A decrease in the height of the pin and an increase in the angles of inclination of their working surfaces does not affect the half of 1564

a note of extraction of the magnetic fraction, since additional magnetic forces act on the magnetic particles, and the conditions for unloading non-magnetic bodies are improved, i.e. the purity of the magnetic fraction is increased.

Claims (6)

1. Magnetic separator, including a magnetic system with pole pieces, mounted under the inclined upper branch of the infinite a conveyor belt, on the surface of which pins and a drive are located, characterized in that, in order to increase the purity of the magnetic product and reduce its losses, the pins on the tape are arranged in rows, while the lines connecting the end pins of each of the rows are located at an acute angle to the axis of symmetry of the tape in the direction of its movement, and the rows of pins located on one side of the axis of symmetry of the tape are offset relative to the rows of pins placed on the other side of it, and the distance between two adjacent rows, placed on one side of the axis of symmetry of the tape is not greater than the length of the pole pieces. 2. The separator according to claim 1, characterized in that the pins in The rows are located along the straight line. 3. A separator according to claim 1, characterized in that the pins in the row are arcuate, bulge in the area of the pole pieces towards the slope of the tape. 4. A separator according to claims 1 to 3, characterized in that the height of the pins in the row is reduced successively towards the slope of the tape. 5. The separator according to claims 1-4, about tl and - due to the fact that the surface of each of the pins, facing the direction of movement of the tape, forms with tape obtuse angle. 6. A separator according to claims 1-5, characterized in that the angle of inclination of the surface of each pin increases sequentially in the direction of the slope of the tape. View 12 FIG. 2 Sch 9 PG IL Fig.Z Pt: VT:: Top P. Geresi Compiled by Yu. Kudr vtsev Tehred L. KravchukKorrektor A.Ilyin Circulation 511 Subscription VNSh1PI USSR State Committee but in matters of inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Propsvodgvenno-printing company, Uzhgorod, st. Project, 4 FIG.