SU1136840A1 - Ferrohydrostatic separator - Google Patents

Abstract

1.FERROHYDROSTATIC SEPARATOR, including a magnetic system with pole pieces, having a hyperbolic profile in the vertical cutting plane, a chamber with a magnetic fluid located in the interpolar gap, loading and unloading devices, characterized in that, to increase the efficiency of the separation process by creating additional ejection force acting towards the unloading device, the pole tips in the horizontal plane have a hyperbolic profile il U)

Description

2. Separator pop.1, which is also distinguished by the fact that the surface of the pole pieces is described by the formula:

EMv

2glPT-pA

W.

-current Cartesian

to coordinate;

G V

-the length of the separation zone;

difference of the magnetic potentials of the poles

electromagnet;

 - acceleration free

fall;

p and p, - density, respectively, of heavy and light fraction separated

material;

m - the maximum magnetization of the magnetic fluid,

3. Separator on the PP. 1 and 2, in that it is equipped with heaters installed in the interpolar gap along the walls of the chamber.

The invention relates to the enrichment of minerals and can be used in mining and other areas for the separation of mineral mixtures by density. A magnetohydrostatic separator is known, including an electromagnetic system with wedge-shaped pole pieces and a magnetic fluid chamber l. However, the known separator is characterized by low productivity. The closest to the proposed technical essence and the achieved effect is a magnetohydrostatic separator, which includes a magnetic system with pole pieces, which have a hyperbolic profile in the vertical section-plane, a chamber with magnetic fluid located in the interpolar gap, loading and unloading devices 2 the separator is poor in performance due to the fact that the separated fractions move to the discharge device only under the action of Tyva force. The purpose of the invention is to increase the efficiency of the separation process by creating an additional buoyant force acting along the direction of the discharge devices. magnetic fluid located in the interpolar gap, the loading and unloading devices, pole pieces in the horizontal section plane have gi perbolic profile. The surface of the pole tips is described by the formula: f (Pt-p.) Is the current Cartesian where X, coordinates; -the length of the separation zone; -difference of the magnetic potentials of the electromagnet poles; - acceleration of free fall; —the density of the heavy and light fraction, respectively, of the material to be separated; the maximum magnetization of the magnetic fluid. In addition, the separator is equipped with heaters installed in the interpolar gap along the chamber walls. Figure 1 shows the proposed separator view in the vertical cutting plane; figure 2 is the same, view in the horizontal section plane. The separator includes an electromagnetic system containing poles with pole tips 1, made hyperbolic in the vertical and horizontal cutting planes m, induction pole 2, chamber 3 filled with magnetic fluid 4, heaters 5 located along the side walls facing the poles of the chamber, curved along the profile of the side walls, and combined with them (the heaters are connected to the contact thermometer through switches) (not shown), discharge devices 6 k 7 for heavy and light respectively, fractions oh The separator works in the following way.

The electromagnetic system is connected to a constant voltage source, and the capacitance 3 is filled with magnetic fluid 4. The heaters are connected to a power source, and the magnetic fluid is heated to a predetermined temperature, after which, maintaining a steady thermal regime in the magnetic fluid, it is heated by periodic heating the supply of the original material to be separated into the magnetic fluid. The heavy fraction precipitates, and the light fraction, whose density is less than the density of the magnetic fluid, floats to the surface of the liquid and, moving along the channel under the action of an additional ejection of the force acting along the chamber, is discharged into the receiver 7 of the light fraction.

Thus, the fulfillment of pole tips by hyperbolic

and in horizontal secant planes with a working surface described by the equation

BMH

2g (pT-pA

allows to drastically improve the performance of the ferrohydrostatic separator and the accuracy of the stratification due to the creation of additional buoyancy force.

The supply of a ferrohydrostatic separator chamber with heaters located along the side walls facing the poles of the chamber bent along the profile of the side walls and aligned with them makes it possible to drastically reduce the effective viscosity of the magnetic fluid and increase the efficiency of the separation process.

Claims (3)

1. FERROHYDROSTATIC CE · PARATOR, including a magnetic system with pole tips having a hyperbolic profile in a vertical secant plane, a chamber with magnetic fluid located in the inter-pole gap, loading and unloading devices, characterized in that, in order to increase the efficiency of the separation process due to the creation of an additional buoyant force acting in the direction of the unloading devices, the pole 'tips in a horizontal plane tee have a hyperbolic profile. FIG. 1 2. The separator according to claim 1, with the fact that the surface of the pole pieces is described by the formula: h · 8 ΛΑ у where x, ij, 7 are the current Cartesian coordinates; ? - the length of the separation zone; V is the difference of the magnetic potentials of the poles of the electromagnet; g is the acceleration of gravity; p _t and p _A - density, respectively. heavy and light fractions of the separated material; m is the maximum magnetization of the magnetic fluid. 3. The separator according to paragraphs. 1 and 2, characterized in that it is equipped with heaters installed in the interpolar gap along the walls of the chamber.