digital divide network - article database

The flotation machine equipment in the field of innovative technology has a good performance magnetic separator works

Magnetic separation equipment works: Based on the magnetic differences between mineral to be elected, not average magnetic field to achieve a separation between the mineral beneficiation method. Currently, the use of the type of magnetic separator made a lot of different classification methods.

(1) Its magnetic source can be divided into the permanent magnetic separator, electromagnetic separator;

(2): a weak magnetic field magnetic separator can be divided according to the magnetic field strength of the magnetic field magnetic separator, high magnetic field magnetic separator;

(3) according to the the media sorting process can be divided into dry magnetic separator, wet magnetic separator;

(4) the magnetic field type can be divided into a constant magnetic field, pulsating magnetic field and an alternating magnetic field magnetic separator;

(5) the shape and structure of the body is divided into belt magnetic separator, drum magnetic separator, roller magnetic separator, disc separator, ring-type magnetic separator cage magnetic separator and pulley-type magnetic separator .

1.1 the practical application of the magnetic separation

Main purpose:

a black metallic ore beneficiation - iron ore magnetic separation;

non-ferrous and rare metals ore Picks - tungsten-tin separation, separation of copper and molybdenum, copper lead separation;

c heavy media beneficiation magnetic magnetic separation of heavy media recovery;

d. removing iron impurities in the mineral processing of non-metallic mineral raw materials - kaolin in addition to iron;

e. wastewater treatment.

(1)benefaction machine weak magnetic separation of magnetite

Large sectors of the processing of iron ore for the Anshan-poor magnetite beneficiation process stage grinding stage sorting process, sorting equipment off the mud groove and permanent Drum Separator is a permanent magnet-type magnetic.

(2) hematite specularite siderite, reductive roasting - low intensity magnetic separation, high intensity magnetic separation for manganese iron ore, the black tungsten crude concentrate and rougher concentrate of zircon, ilmenite, kaolin and coal.

1.2 Electromagnetic election

The electromagnetic selected based on minerals and materials with different charges separation occurs as a theoretical basis for the action of an external electric field. Electromagnetic method of selection application materials the inherent different triboelectrification of nature, the conductivity and dielectric properties. Due to static electricity and the particle size and is proportional to the electric field intensity of the surface charge, so the static electricity on the thin, sheet-like light particles impact bigger. Thus, the particles can be effectively separated.

The industrial applications of electromagnetic selection process can be divided into several categories:

1) the separation of minerals and coal;

2) Food Business purification;

3) waste disposal;

4) Electrostatic grade;

5) electrostatic deposited.

1.3 Magnetic Separation Equipment

(1) wet weak magnetic field permanent magnet drum magnetic separator

This magnetic separator is mainly used for the separation of ferromagnetic materials.

(2) electromagnetic magnetic pulley

Equipment along the running direction of the material poles intercourse or changes in the polarity of a single multi-pole magnetic system. The electromagnetic magnetic pulley magnetic induction up to 0.1 ~ 0.15T, to the ore size 10 to 100mm. The size of the pulley ¢ × L (600 ~ 1000) × (1700 ~ 2400) mm. The same role in the concentrator and permanent magnetic pulley.

(3) permanent magnet drum magnetic separator

Device structure: its main sectors drum and magnetic system. Strontium ferrite magnetic system and the magnetic field characteristics: magnetic system applications: fine-grained ferromagnetic mineral grains dry separation, purification of the magnetic material, powder material to exclude magnetic impurities.

(4) Wet weak magnetic separator

The equipment consists of the three main sectors of the cylinder, magnetic system, tank.

(5) superconducting high gradient magnetic separator

Device structure:  periodic superconducting high gradient magnetic separator is a set superconducting magnetic filter. The main sectors of the superconducting coil, refrigeration sector sorting mechanism to the ore bodies. The superconducting magnetic instruments used as:

1) magnetic separation process basic research laboratory device;

2) the middle test used to simulate large-scale device to manipulate the premise;

3) produced by small-scale use.

1.4 Electromagnetic election equipment

Electromagnetic separation equipment is based on electrostatic force is applied to the temporary charged particles. The mineral charged mechanism of electromagnetic sorter design is based on. Charged mechanism, electromagnetic sorting machine can be divided into the following three categories:

1) free fall the static electricity sorter;

2) high-voltage sorter;

3) exposure to electric sorting machine.

(1) contact or friction Charged sorting machine (free fall electrostatic separation machine)

In such a sorting machine, between the particles, or with the third material (such as a container, the feeder chute or the nozzle wall) of contact or friction obtained charge. These particles then enter the electric field, according to how much of their polarization and the charge separation occurs.

(2) conduction induction Charged sorting machine

When particles and conductive electrode contact in the electric field can be conductors and non-conductors leave this conduction is the basis of the electric sorting machine. When the presence of a high voltage electric field, the different particles and the grounded conductor contact can occur conduction induction charging. Usually by conduction,  conductor particles quick charging, while the insulating particles charged much more slowly, so that the conductive particle and the insulating particles separated