SU1456236A1 - Cluster hydrocyclone - Google Patents

Abstract

This invention relates to a slurry separation technique and allows for improved stability and separation efficiency of a magnesite slurry. For this, the hydrocyclone (H) 5 is supplied with a diffuser 1 with a slope in the direction of supply of the suspension, a grid (C) 13, a valve 14. and a DRAIN 2 of large inclusions. The cell size C 1 3 is less than half the diameter of the Sand nozzles 15, Around the conical part G 5 there is a common for three G 5 electromagnetic system with solenoids 10 and magnetic conductors 11, enclosed in a two-layer magnetic screen (E) 12. E 2 has an inner ... layer t arepKanaji by increased magnetic induction and allows the magnetic field to be amplified when the ferromagnetic suspension is separated. 2 Il. (L

Description

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The invention relates to a separation technique - a suspension, in particular, apparatus for separating ferromagnetic suspensions in a field of centrifugal and magnetic forces, and can be used in the coal industry,

The purpose of the invention is to increase the stability and efficiency of the separation of the agnetitic suspension.

Fig, 1 shows a battery hydrocyclone, general view; FIG. 2 shows the arrangement of hydrocyclones with an electromagnetic system and a magnetic screen.

The battery hydrocyclone contains a diffuser with 2 large slurry suspension inclusions, distributor 3, three supply lines A, three hydraulic cyclones 5, which are connected by drain pipes 6 to collector 7, drain pipe 8 for discharge from collector to circulation and collection 9 of condensed product,

Vokrz g of the conical part of a compactly installed hydroyclones razmes; e- on the electromagnetic system with solenoids 10, between which the magnetic cores 11 are located, Three Hydropiclones have a single electromagnetic system enclosed in a two-layer magnetic screen 12,

A grid 13 is installed in the diffuser, the cell size is smaller than the diameter of the Peskovaya nozzle of hydro-cyclones, and the valve 14. The two-layer continuous screen has an inner layer, which is strips of materials with high inductance and high permeability.

The pressed strips are arranged parallel to the magnetic induction lines in order to reduce the harmful energy losses associated with the Foucault currents and are deposited on a continuous outer layer made of a non-ferromagnetic material having a high magnetic resistance.

Battery hydrocyclone works as follows

The initial magnetite suspension under pressure enters the diffuser 1, in which the cr: п separates inclusions that do not pass through the grid 13, the diffuser itself is filled with a sudden expansion to create a quiet zone (pocket). Large particles under the force of gravity and loss of speed during expansion precipitate and roll down an inclined grid into a quiet zone and are periodically discharged by means of valve 14,

After passing through the grid 13 diffuser magnetite suspension enters the distributor .. 3, from which it enters the hydroyclones 5 through supply pipes 4, Tangential pulp feed and axial unloading in the hydrocyclone cause the pulp and its radial mixing from the walls to the discharge openings. downwardly part of the flow goes n spirals along the walls of the cone. In the conical part of hydrocyclones, ferromagnetic particles fall into the zone of action of the electromagnetic field of the system with solenoids 10 and magnetic conductors 11 and two Because of the magnetite having sufficiently strong and magnetic properties, passing a heavy suspension through a magnetic field created by an electromagnetic system enhanced by a two-layer magnetic screen contributes to a more complete and selective separation of magnetite from impurities. and increase productivity.

Magnetite and coarse grained, smaller than half the diameter of the Sand nozzle, through the sand nozzles of 15 hydrocyclones are sent to the collection of condensed product 9 for further use in the enrichment system, and the drain through the discharge pipelines 6 enters the collector 7, then through the common outlet drain a conduit 8 extending inside the distributor into a revolution.

When a magnetite suspension is continuously fed into the diffuser 1, large inclusions accumulate in the corner pocket of the diffuser, which are periodically discharged through the open valve 14 to the outlet 2, then the valve closes in order to maintain pressure in the diffuser and open the outlet to reset the accumulations

Claims (1)

Invention Formula A battery hydrocyclone containing a distributor with an inlet pipe of the initial suspension, hydrocyclones with feed pipes, drain pipes with a collector, sand pads, a condensed product collector, characterized in that, in order to improve the stability and separation efficiency of the magnetite suspension, hydrocyclones are equipped with a single electromagnetic system. mine, enclosed in a double-layer magnetic screen, a diffuser with a grid and a tap of large inclusions, while the inner layer of the screen is made of a material with twisted magnetic induction, the diffuser is made with a slope towards the inlet nozzle, and the mesh size is less than half the diameter of the Sand fitting. ten y / vf (para. 2