SU977037A1 - Method of classifying particles by size in liquid medium - Google Patents

Description

one

The invention relates to the field of separation of materials using electric and magnetic fields and can be used to enrich minerals, in the industry of building materials and in other fields.

A known method for separating particles in a liquid medium is implemented in a known device, which includes the effect on the material being divided by crossed electric and magnetic fields.

A disadvantage of the known device is the low efficiency of the separation process.

Closest to the proposed technical essence and the achieved result, 5 is a method of classifying particles by size, implemented in a known device, including the effect on the material to be divided by crossed electric and magnetic fields 2.20

The disadvantage of this device is the low classification accuracy.

The purpose of the invention is to raise the class of caschas.

This goal is achieved by the fact that in the method of classifying particles by size in a liquid medium, including the effect on the material being divided by crossed electric field fields, the strength of the electri- cal; a cus floor is set equal to the penetrative intensity of particles with a boundary size.

The method is carried out as follows.

Breakdown occurs when the particle's electrochemical potential is equal to the product of the electric field intensity and particle size. As a result, the nature of the interaction of currents with a magnetic field, i.e. in the pre-breakdown region (particles of a size less than the border) and in the post-breakdown region (particles of a size more boundary), the signs of interaction are different, respectively, the speeds are opposite and the trajectories of the particles of the large and small classes are opposite.

Claims (2)

FIG. 1 shows a device for implementing the method of a front view; FIG. 2 the same, top view. 39770 The device contains a working channel 1, electrodes 2, electromagnets 3, a dividing partition 4, a voltage variator 5. The device works as follows. The particles to be classified fall into the working channel 1, the electric field between the electrodes is 2 o & it breaks down the breakdown of large particles. Under the action of a magnetic field between the poles of electromagnet 3, due to the different distribution of currents between the punctured and 10 impenetrable particles, the trajectory of large and small particles are deflected in opposite directions and the particles pass along opposite sides of the separation partition 4. voltage. on the electrodes 2, providing a breakdown at a given 11 {at the boundary grain. The application of the invention provides improved classification accuracy, which reduces the number of consecutive 20 classification operations and thereby reduces laboriousness, energy (and reduces the cost of classifications. Claims The method of classifying particles by size in a liquid medium, including CKpei divided electrical and electrical magnetic fields, characterized in that, in order to improve the classification accuracy, the strength of the electric field is set equal to penetration the intensity of particles with grayscale size Sources of information taken into account for the examination 1. USSR author's certificate No. 709175, class B 03 C 9/00, 1976. | 2. USSR author's certificate number 732014, cl. At 03 C 9/00, 1967 (prototype). / FIG. g