RU2069101C1 - Method of separating materials in ferromagnetic liquid and magnetohydrostatic separator - Google Patents

Abstract

FIELD: mining and metallurgy. SUBSTANCE: method consists in adding material to be separated into ferromagnetic liquid contained in chamber, applying magnetic field on this liquid, removing submerged heavy particles and floating light particles by means of water conveyed onto the surface of ferromagnetic liquid along inside walls of chamber. Separator has magnet system with working chamber including ferromagnetic liquid in the interpolar space, feeder, discharge arrangements and means for conveying water into chamber, which is made as a branch pipe with channels aligned toward inside chamber walls. EFFECT: achieved effective separation of materials by their density. 2 cl, 2 dwg

Description

 The invention relates to the separation of materials by density in magnetic fluids and can be used in mining and other industries, in particular, in the processing of ores and recyclables from alloys of non-ferrous and ferrous metals.

A known method of magnetohydrostatic separation, including quasi-gravity of a ferromagnetic fluid located in a working chamber installed between the pole pieces of the magnetic system, the supply of source material and the discharge of separation products: sunken heavy and floating light particles of the material [1]
To carry out magnetohydrostatic separation of materials, separators are used, the mandatory elements of which are a magnetic system, a working chamber with a ferromagnetic fluid, installed in the interpolar gap of the magnetic system, a reader and unloading devices.

 One of the disadvantages of the known magnetohydrostatic separators is low productivity, due, in particular, to the low speeds of the movement of light particles in the direction of their discharge from the working chamber. The elimination of this disadvantage is the problem solved by the present invention.

 One of the known solutions to this problem is to install a working chamber with an inclination towards the discharge of fractions of the material [2] However, this technique does not fully solve this problem, since as light particles approach the discharge site, their speed slows down. In addition, particles located near the walls of the chamber adhere to them and impede the movement of the others towards unloading.

 According to the present invention, the removal of light particles is intensified by the supply of water to the inner walls of the chamber to carry light particles into the middle of the chamber.

 It should be noted that the method of magnetohydrostatic separation of materials is known, in which the light fraction is washed off by water from the surface of the magnetic fluid [3] However, the speed of movement of water and its washing off of light particles near the walls of the chamber is lower than in the middle of the stream, which forces to reduce the feed rate of the source material.

 In the inventive method, in contrast to the known, water is supplied by two dynamic flows directed to the inner walls of the chamber. The dynamic pressure of water flows flowing from the walls completely eliminates the contact of light particles with the walls of the chamber. Then these streams meet in the middle of the chamber and form a common stream that carries light particles towards the discharge side.

 To implement the proposed method, a known magneto-hydrostatic separator is proposed, including a magnetic system installed obliquely in the interpolar space of this system, a working chamber with ferromagnetic fluid, a feeder, and unloading devices to be equipped with means for supplying water into the chamber, made in the form of a pipe with channels facing the inner walls cameras.

 The invention is illustrated by the example of the separator shown in the drawings, where Fig.1 is a General view of the separator; FIG. 2 cross section of the separator.

 The magnetogravity separator includes a magnetic system 1 with pole tips 2, 3, between which a working chamber 4 with a ferromagnetic fluid 5 and a vibrator 6, a feeder 7 and an unloading device 8 with receivers of separation products 9, 10 are installed with an inclination. The separator is equipped with a pipe 11 for carrying out light particles in the middle of the chamber, divided in the lower part into channels 12 and 13, the outputs of which are facing the inner walls of the chamber.

 Magnetogravity separator operates as follows. The source material is fed to the surface of the ferromagnetic fluid 5 using the feeder 7. Under the action of buoyancy forces in the magnetic fluid, the light fraction remains on the surface, and the heavy fraction sinks to the bottom of the chamber. With the help of vibration and tilt of the chamber, the light and heavy fractions move towards the unloading device. Water is supplied through the nozzles 11, which through the channels 12 and 13 enters the inner walls of the chamber and, draining from them, carries light particles into the middle of the chamber, where a general water flow is formed, which carries light particles towards the discharge side. The collection of separated fractions of the material is carried out by receivers 9 and 10.

Claims (2)

 1. The method of separation of materials in a ferromagnetic fluid, comprising feeding the material to be separated into a ferromagnetic fluid located in the chamber, applying a magnetic field to this fluid, removing drowned heavy particles, and removing floated light particles using water supplied to the surface of the ferromagnetic fluid, characterized in that water is supplied to the inner walls of the chamber.  2. Magnetohydrostatic separator, including a magnetic system, in the interpolar space of which a working chamber with ferromagnetic fluid is installed with an inclination, a feeder, discharge devices and means for supplying water into the chamber, characterized in that the means for supplying water is made in the form of a pipe with channels facing to the inner walls of the chamber.

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