SU1546156A1 - Method of magnetoliquid separation - Google Patents

Abstract

The invention relates to enrichment and can be used to separate ores by density in magnetic fluids. The purpose of the invention is to increase the efficiency of the separation process by stabilizing the parameters of the magnetic fluid (MF) in the separation zone. Prior to supplying the MF to the separation zone, it is pumped through a magnetic field, the magnitude of the intensity and the gradient of the intensity of which are set larger than the values in the separation zone. Then the aggregated MF particles are removed. Processed t.obr. MF served in the separation zone, located in the interpolar gap, and create in it a non-uniform magnetic field. A separable mixture is fed to the surface of the MF and is separated by density. After separation, the separation products are discharged to the respective receivers. 1 il.

Description

This invention relates to the field of magnetic enrichment and can be used to separate ores in magnetic fluids by density.

The purpose of the invention is to increase the efficiency of the separation process due to the stabilization of the parameters of the magnetic fluid in the separation zone.

The drawing shows a device for implementing the method.

The device includes a tank 1, a pipeline 2 with an extension of 3, a pole 4, a speed meter 5, taps 6, a control unit 7 with a valve 8 and a container 9.

The essence of the method is as follows.

Before the magnetic fluid is supplied to the separation zone, it is pumped through a magnetic field, the gradient of intensity and the intensity of which is set 1.2-3.0 more than the values of these values in the separation zone. Aggregates of magnetic fluid particles are formed. The maximum size of a ' formed aggregates of ferromagnetic particles of a working magnetic fluid is related to the pumping rate U and the time t of redistribution

4 O

cn

about

dividing the concentration of the treated magnetic fluid by the ratios 2Ms (vH) ma

and; (ABOUT;

 five

9f

2M (DR

U)

where M- is the saturation magnetization of the material of ferromagnetic particles of magnetic fluid; (VH) is the maximum value of the gradient of the magnetic field strength in the working zone of the magnetic-liquid separator;

Y is the dynamic viscosity of the carrier phase of a magnetic fluid. Nm is the maximum value of the magnetic field strength in the working zone of the magnetic-liquid separator. The resulting aggregates of a size greater than 600 A are removed and removed, and the magnetic fluid enters the separation zone, where a non-uniform magnetic field is created. A separable mixture is then applied to the surface of the magnetic fluid and density separation occurs.

The initial magnetic fluid from reservoir 1 is pumped through pipeline 2, having an extension 3 in the region of maximum strength and magnetic field strength gradient created between the points,

,

five

0

Luz 4 and magnetic system. The transmission rate of the magnetic fluid is controlled by the speedometer 5. Magnetic fluid with large particles, accumulating in the pipeline section 3, is periodically removed along the outlets 6. The removal process is monitored by the unit 7 and controlled by the valve 8. The magnetic fluid for separation enters the container 9 placed in interpolar gap of the magnetic liquid separator.

Claims (1)

Invention Formula The method of magnetic-liquid separation, including the supply of magnetic fluid to the separation zone located in the interpolar gap, exposure to a non-uniform magnetic field, the flow of the separable mixture into the separation zone on the surface of the magnetic fluid and the unloading of products separation, characterized in that, in order to increase process efficiency separation due to the stabilization of the parameters of the magnetic fluid in the separation zone, the magnetic fluid before being fed into the separation zone is treated in a non-uniform magnetic field, the value n The averaging and intensity gradient of which is set to more than the values of these quantities during separation, and then the aggregated particles of magnetic fluid are separated.