Magnetic fluid static separation process (2)

When the magnetic pole is inclined at an angle to the horizontal, the ore is magnetized in the original vertical direction as the magnetic pole is inclined.

However, in Figure 4(a), the ore G is subjected to the force F≠Peosa, so the ore system is in an unbalanced state of the force, which is unstable and will float up to the Y' axis to F and Pcosa. Equal. Since the track runs mineral particles, not along the 'axis Y (due to the resultant force F and P F _x present) case mine, but along the dashed lines represent the locus of FIG. 4 (b), proceeds to G _1. The position of the granule is at the origin of the new coordinate X"Y" parallel to the original X'Y' coordinate. At this time, the angle θ also increases to θ=a, and reaches F=Peosa. At this time, a force Psina is left, and the ore particles automatically move in the oblique direction of the X′′ axial magnetic pole.
From the above analysis, it seems that as long as the magnetic pole slightly appears a certain angle of inclination a, the ore particles will automatically move in the oblique direction, which is not required for the size of the a angle. actually not. Because the magnetic poles have edge effects: there is an external thrust at the edge of the magnetic pole, which can push the material in the magnetic field out of the magnetic field. Only when the magnetic pole inclination angle is increased, that is, the Psina value is increased, so that the magnetic pole inclination angle is increased to a certain value, and the Psina value is sufficient to overcome the outer thrust of the magnetic pole edge, the ore particles at any position in the magnetic pole gap can be smoothly tilted. The direction is removed to meet the requirement of discharging the other end of the feed end in the magnetic field.
Practice has proved that as the inclination of the magnetic pole increases, the speed of the movement of the ore particles along the x-coordinate direction also increases, so that the method of adjusting the inclination of the magnetic pole can be conveniently adopted to achieve the purpose of controlling the movement speed of the ore particles in the x-coordinate direction. [next]
C. The grain moves horizontally along the Z axis.

The spherical particles in the wedge-shaped magnetic pole gap are affected by the magnetic field force, and the Z-axis motion trajectory is theoretically inevitably advanced along the magnetic field lines of the magnetic field. Considering the magnetic pole edge effect, the magnetic field line is substantially an arc drawn at a point on the top of the magnetic pole at a point on the top of the wedge pole; at the lower part of the wedge pole is substantially a bottom of the magnetic pole. One point is the arc drawn by the center of the circle, as shown in Figure 5. According to the figure, if the cohesion force of the ore particles G is F and the sinking force is P, then they can only make the resultant force of F and P zero on the axis of symmetry of the magnetic pole center. As long as the ore particles deviate slightly from this symmetry axis, F and P are not on the same line, and the resultant force F _z will inevitably occur. The direction: for the arc drawn by a point on the top of the magnetic pole (magnetic line), pointing to the center of the magnetic pole On the axial surface, as shown in Fig. 5(b); conversely, the circular arc (magnetic force line) drawn at a point centered on the bottom of the magnetic pole must point to the surface of the magnetic pole, as shown in Fig. 5(a). The results are: mineral particles located in an upper portion of the wedge-shaped magnetic poles, the magnetic field acting force F _z, are closer to the central pole gap, the pole located in the lower portion of the wedge-shaped mineral particles, and the magnetic field force F _z acting surface are close to the two poles. This movement of the ore particles makes the ore particles crowded together and is not conducive to sorting. This is a major drawback of this wedge pole. Magnetic poles of other shapes, such as the equiaxed hyperbolic magnetic poles to be described later, also have this disadvantage, but are slightly lighter. Therefore, this is almost a common shortcoming of all shape magnetic poles, and it is still difficult to overcome.

Separation results of large height differences, the sorting effect is inevitably satisfactory; however, even if the mineral density is sorted, even if there is a large difference in mineral density, it is difficult to obtain a large difference of separation results, and the sorting effect is inevitably poor. The reality is: we magnetic fluid dressing, a large amount of light for sorting non-metallic minerals, and light industrial waste, and therefore, the wedge shape is not over the pole. In order to find the ideal pole shape, it is necessary to study the theory of the shape of the pole.

There are two spindles.Using USB port to transmit data, the system has more than 32M of memory capacity, save the file completely from the computer, shut down the computer or other typesetting, can greatly improve work efficiency.