SU749433A1 - Magnetic hydrodynamic separator - Google Patents

Description

Union of Soviet Socialist Republics

State Committee

USSR on matters of inventions and discoveries (72) Authors of the invention (71) Applicant

Inventions

TO AUTHOR'S CERTIFICATE (61) Additional to author. certificate (22) 3 announced on 02.24.76 (21) 2327974 / 22-03 with the addition of application No. (23) Priority Published on 07.23.80. Bulletin No. 27

Date of publication of the description 25.07.80

G.A. Vitkov and T.N. Zabelina (s) 749433 (51) M. CL *

B 03 C 1/08 (53) UDK621.928.

.89: 622.778.

.002.5 (088.8).

(54) MAGNO-HYDRODYNAMIC SEPARATOR

The invention can be used in various fields of technology where separation by density (or particle size) of elongated and powder particles is required, for example, in the field of mineral processing. ⁵

Devices are known for separating solid particles, the principle of which is based on the different effects on the liquid and particles suspended in it of volumetric electromagnetic forces arising in crossed electric and magnetic fields £ 1}.

However, these devices have drawbacks. current, which does not allow to obtain a satisfactory separation into fractions of very small mixtures (powders) and mixtures of elongated particles (whiskers).

The closest in design features to the invention is a magnetohydrodynamic separator for separating solid materials, including a container divided by horizontal partitions into chambers filled with electrolyte and mounted on top of each other, a magnetic system located on the outside of the chambers, an electrode system and receivers for separation products

This separator also does not achieve effective separation of elongated and powdery particles.

Nel invention - improving the separation efficiency of elongated and powdery particles by ensuring rotation of the electrolyte and braking, particles of the separated mixture.

This is achieved by providing a magnetohydrodynamic separator 'for separating solid materials, including a container divided by horizontal partitions into chambers filled with electrolyte and mounted one above the other, a magnetic system located on the outside of the chambers, an electrode system and receivers for separation products. The electrode system consisting of alternating rings is located on the inner surface of the chambers made in the form of cylinders, and the magnetic system consists of alternating ring electromagnets: in this case, the partitions between the chambers have openings located in the center.

In FIG. 1 shows a magnetohydrodynamic separator, general view; in FIG. 2 - one of the cameras, section.

The magnetohydrodynamic separator ₁₀ for separating solid materials is a vertical tank 1, the casing 2 of which is made of a dielectric and is divided in height by stationary horizontal partitions 3, made ₁₅ in the form of electrically conductive plates having openings 4 located in the center, by n the number of chambers filled electrolyte.

On the inner surface of the chambers, complements You are a ₂₀ in the form of cylinders, disposed electrode system 5 consisting of an alternating elbows, and the outer side of the container 1 has a magnet system consisting of an alternating kol 2 ~ ₅ tsevyh electromagnets or permanent magnets 6.

To collect separated into fractions (Fr.., Fr .. .Fr _g. Η) of particles at the bottom of each cylinder _30, there are receivers ki 7. The latter (lower) .tsilindre hole 4 in the center serves to output final fraction Fr. _n ·

In order to reduce the magnetic resistance and the magnetic flux concentration structure ₃₅ has a magnetic ka 8.

Magnetohydrodynamic separator operates as follows.

Under the action of electromagnetic forces £ chambers (cylinders) (see. Fig. 2) usta- ⁴⁰ navlivayutsya certain angular rotation velocity of fluid (, IE ^ <., W _n).

These electromagnetic forces 4: arise from the interaction of an external magnetic field having induction B (vectors B are shown by dashed lines) with the magnetic field of the current flowing through the liquid (electrolyte) and having a density). Under the influence of these forces in kazh ^J house 50 of the cylinders by controlling the magnetic field and current density is set strictly defined rotational speed of the conductive liquid in which all Chastain having hydroxy revlicheskuyu ₅₅ above a certain coarseness for a given cylinder are braked stationary surface, under the action of Archimedean forces they move to the center of rotation and fall into the next cylinder in the field of gravity.

Angular rotation speeds increase from the upper cylinder to the lower.

Separated mixture is poured into the upper cylinder of the separator. From this cylinder, all fractions, except the smallest, fall into the second cylinder, in which the angular velocity of rotation <χ »is somewhat higher than in the first. The next fraction is delayed in this cylinder, and the rest fall into the third cylinder, etc.

After some time, determined by the density and size of the particles in the mixture, the particles are divided into fractions, with each fraction falling into its own receiver.

The present separator is a batch structure. The separated mixture is introduced into the structure after a certain time interval. This interval and the single volume of the mixture introduced into the separator depend on the type of mixture, the size of the structure and the number of fractions into which the mixture is divided.

The proposed design of the magnetohydrodynamic separator in comparison with others allows one to separate any mixtures of solid particles, including those mixtures that cannot be separated by known methods (for example, mixtures of elongated particles, whiskers and needle crystals, powders).

Claims (2)

1. Andrew U. C, MagnitogidrodinamiMb 16О474, cl. OZ C 1 / O8, weighty separation of granular mixtures. -M 5 26.11.62. 2. USSR author's certificate