CN203862384U - Fluidized magnetic agglomeration gravity separation equipment - Google Patents

Abstract

The utility model discloses a fluidization magnetic agglomeration gravity separation device, in particular to a fluidization magnetic agglomeration gravity separation device for separating micro-fine magnetite, which solves the technical problem that the dry magnetic separation device in the prior art has agglomeration phenomenon in the separation of the micro-fine magnetic, which can produce a large amount of mixed materials and packages; an air inlet hopper and a magnetic material discharging hopper are arranged below the air distribution plate, a feeding hopper is arranged on the side part of the joint of the air inlet hopper and the air outlet hopper, and the end of the feeding hopper is higher than the end of the magnetic material hopper; the two sides of the air distribution plate are provided with a first magnetic system and a second magnetic system, and the first magnetic system and the second magnetic system are opposite in heteropolarity. Adopt such technical scheme the utility model discloses an do not use the screen cloth, can keep the stability of intake, improve the quality of screening.

Description

A kind of fluidized magnetic agglomeration re-separation equipment

technical field

The utility model relates to a magnetic agglomeration re-separation device, in particular to a fluidized magnetic agglomeration re-separation device.

Background technique

At present, magnetite mostly adopts a combination of dry and wet process methods to beneficiate. The specific method is: first use dry method for large-grain rough separation, but because most of the iron ore in my country is embedded with a fine particle size, it must be finely ground and selected to obtain qualified grades. The traditional micro-grained magnetite separation adopts the wet separation process, and the water-deficient central and western regions of my country cannot provide enough water resources, so a large amount of high-quality magnetite cannot be selected. At the same time, the products after wet sorting need to go through dehydration operation, and even additional drying operations are required in the severe cold regions of the north, which increases production costs.

The magnetic pulley is mostly used for throwing away part of the waste rock after coarse crushing of iron ore, and the processing upper limit particle size can reach 150mm; the dry drum magnetic separator is the most common dry magnetic separator, and its structure is the same as that of the wet drum magnetic separator. Iron ore concentrators are mostly used to improve the grade before grinding, and the processing particle size is <6mm; the separation principle of the roller magnetic separator is basically the same as that of the magnetic pulley, but the processing particle size is finer, and the field strength is mostly above 8000GS. It is suitable for granular non-metallic iron removal operations; various suspension iron removers are only suitable for removing large impurities in ore; pipeline-type iron removers composed of multi-layer magnetic frames are suitable for non-metal powder iron removal operations, but in magnetic It is difficult to apply it to magnetite-based iron separation operations; other magnetic separators such as disk and belt need to fully disperse the ore powder to have a better separation effect, and it is difficult to adapt to the requirements of large-scale production. Patent 94115536.6 Magnetic field screening method and its equipment, mentioned wet and dry, but in dry sorting, the screen is easy to block, the air volume is unstable, and it is not easy to control; patents 201210204646.2 and 201210202916.6 are both dry magnetic separation, but the magnetic materials are separated by attraction .

To sum up, the existing dry-type magnetic separation equipment is based on the difference in the specific magnetic susceptibility coefficient of the magnetic substance and the gangue to separate the magnetic minerals. The existence of agglomeration of magnetic substances will inevitably produce a large number of inclusions and packages, and the grade of concentrate is difficult to meet the requirements. Therefore, it is necessary to develop new dry magnetic separation equipment for fine-grained magnetite.

Utility model content

Aiming at the problem that the dry magnetic separation equipment in the prior art will produce a large number of inclusions and packages in the separation of fine-grained magnetic materials, and the grade of concentrate is difficult to meet the requirements, the utility model provides a sorting fine-grained magnetite Fluidized magnetic agglomeration re-selection equipment.

The technical scheme of the utility model is realized in the following manner: a fluidized magnetic agglomeration re-selection equipment, including an air distribution plate, an air outlet hopper and a feeding hopper are arranged above the air distribution board, and a non-magnetic The outlet of the material; the air inlet hopper and the magnetic material outlet hopper are arranged under the air distribution plate, and the feeding hopper is arranged on the side of the connection between the air inlet hopper and the air outlet hopper, and the end of the feeding hopper is higher than the end of the magnetic material hopper; the air distribution plate A first magnetic system and a second magnetic system are provided on both sides of the motor, and the first magnetic system and the second magnetic system are opposite to each other with opposite poles.

The air inlet hopper is longer than the magnetic material outlet hopper.

In the utility model, the opposite poles of the first magnetic system and the second magnetic system are arranged oppositely, and the two magnetic systems are arranged obliquely and in parallel, so that the magnetite to be screened is in the magnetic field as uniform as possible and in the fluidized air, so that the magnetic material In the magnetic field, it is magnetized into a chain-like magnetopolymer. Under the joint action of gravity and magnetism, the magnetopolymer enters the magnetic system material hopper along the inclined direction to prevent the magnetic material from being adsorbed on the air inlet or outlet hopper. Non-magnetic The material is not affected by the magnetic field, and is discharged through the air outlet under the action of wind and gravity. The utility model does not use a screen, can keep the air intake stable, and improves the screening quality.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of the structure of the utility model in use.

Detailed ways

As shown in Figure 1, a fluidized magnetic agglomeration re-selection equipment includes an air distribution plate 7, an air outlet hopper 2 and a feed hopper 1 are arranged above the air distribution board 7, and a non-magnetic material outlet is arranged on the upper part of the air outlet hopper 2 The wind distribution plate 7 is provided with an air inlet hopper 4 and a magnetic material outlet hopper 3 below, and the feed hopper 1 is located at the side of the connection between the air inlet hopper 4 and the outlet hopper 2, and the end of the feed hopper 1 is higher than the magnetic material hopper End 3; the first magnetic system 5 and the second magnetic system 6 are arranged on both sides of the air distribution plate 7, and the first magnetic system 5 and the second magnetic system 6 are opposite to each other. Described air inlet hopper 4 is longer than magnetic object hopper 3.

As shown in Figure 2, when in use, the material A is fed from the upper part of the feeding hopper 1, and at the same time, the wind B blows upwards from the air inlet hopper 4, forming a fluidized airflow in the magnetic field space, and the non-magnetic material C is not affected by the magnetic field. Under the action of wind force and gravity, it is discharged through the wind outlet 2, and the magnetic material D is magnetized in the magnetic field to form a chain-like magnetopolymer, and moves obliquely downward along the parallel direction of the magnetic system, and finally under the joint action of wind force, gravity and magnetic force Fall into the magnetic material hopper 3.

Claims (2)

1. A fluidized magnetic agglomeration re-election device, characterized in that it includes an air distribution plate (7), an air outlet hopper (2) and a feed hopper (1) are arranged above the air distribution board (7), and the air outlet hopper (2) The upper part is equipped with a non-magnetic material outlet; the air distribution plate (7) is equipped with an air inlet hopper (4) and a magnetic material outlet hopper (3), and the feeding hopper (1) is located between the air inlet hopper (4) and the outlet The side part of the connection of the air bucket (2), the end of the feeding hopper (1) is higher than the end of the magnetic material bucket (3); the two sides of the air distribution plate (7) are provided with the first magnetic system (5) and the second The magnetic system (6), the first magnetic system (5) and the second magnetic system (6) are opposite to each other with opposite poles. 2. The fluidized magnetic agglomeration re-separation equipment according to claim 1, characterized in that: the air inlet hopper (4) is longer than the magnetic material outlet hopper (3).