WO2010048773A1

WO2010048773A1 - Magnetic mechanical equipment, method for separating solid particles from each other in dust, system and method for recycling metal component

Info

Publication number: WO2010048773A1
Application number: PCT/CN2009/000915
Authority: WO
Inventors: 多斯桑托斯·维克托·洛雷罗; 刘颖
Original assignee: Dos Santos Victor Loureiro; Liu Ying
Priority date: 2008-10-28
Filing date: 2009-08-11
Publication date: 2010-05-06
Also published as: CN101708484A; CN101708484B

Abstract

A magnetic mechanical equipment, a method for separating solid particles from each other in dust, system and method for recycling metal component. The magnetic mechanical equipment comprises a treating vessel (11) with recesses (12) on its inner wall. Stirring device (15) is installed in the treating vessel, and energy converters (13) generating mechanical vibration and magnetic pulse simultaneously are installed in the said recesses. The combined action made by the mechanical vibration and the magnetic pulse generated by the energy converters and the stirring movement by the stirring device separates solid particles in dust or sludge from each other. The magnetic mechanical equipment can be used for separating particles in dust or for recycling metal component from dust produced in converter steelmaking.

Description

Magnetic mechanical equipment, method for separating dust particles,

Metal component recovery system and method

The invention relates to a magnetic mechanical device and a method for separating dust or slurry by magnetic mechanical action, in particular to separating a dust-water mixture formed after mixing dust and water in steel making to make dust A magnetic mechanical device and method in which solid particles in a water mixture are separated from each other. The present invention also relates to a system and method for recovering metal components in steelmaking dust.

Background technique

It is known that when oxygen is blown in a steelmaking converter, the initial combustion of silicon occurs, and at this time, the temperature rises a lot, and the initial slag is generated. The carbon in the steelmaking pig iron is then burned, resulting in the production of a large amount of gas containing mainly carbon monoxide, which generates a large amount of drifting substances in the furnace, so that the slurry mixture becomes particulate milk in the furnace gas environment. Turbidity. The metal particles are formed by solidification of small steel water droplets in a gas environment. These particles vary in size from one tenth of a meter to one thousandth of a millimeter due to changes in pressure and temperature in the furnace. The difference in particle size significantly affects the composition of the particles, and the purity of the metal is directly related to the size of the particles. Fine particles, which are more susceptible to heat and more in contact with oxygen in the environment, are mainly composed of iron oxide compared to large particles mainly composed of metal components.

The gas produced in the furnace is hindered by the sudden increase in the amount of gas, which is caused by the exothermic reaction in the furnace and the simultaneous generation of carbon monoxide, so that the generated gas is introduced into a gas collection system. There are various gas collection systems in different steel plants, but only some of them can control the absorption of gas to prevent gas from being discharged into the environment outside the converter, while also avoiding air entering the collection system. This feature is very important. First, because carbon monoxide is fatal, it should not be directly discharged into the atmosphere. Second, carbon monoxide is a combustible gas that can be collected. Reuse can save energy and protect the environment. Since this system prevents the entry of air in the atmosphere during the absorption process, the oxidation of the drifting particles is also avoided.

Direct discharge of these dusts can cause direct pollution to the environment and should be recycled to the greatest extent possible. Once the metal components are recovered, they can be used in steelmaking production, and the remainder can be used as cement raw materials for cement production or other utilization because of its metal composition.

At present, the dust is recycled into bricks or pellets and put into the blast furnace. This is an inappropriate treatment because it contains high metallic iron, and a low-carbon metallic iron is used to produce secondary. Products, or the use of industrial pure iron to produce steel pig iron. Adhesives and other materials are required to make the dust into bricks, which greatly reduces the metal content of the dust and adds impure material to the furnace. When the pellets are produced, the dust and mineral powder are mixed with the binder, and the dust is ground to achieve the gradation required for sintering, which consumes more energy. These two processes have the following major drawbacks. 1) Add other impure materials when making dust into bricks, which will greatly reduce the metal composition in the material. 2) There are not many other materials to be blended when making pellets, but grinding steelmaking dust consumes energy, and the same processing of pellets also consumes energy.

3) Both methods use metal iron to produce steel pig iron, which is less pure. 4) Putting this material into the blast furnace can have a big negative result, because when zinc and other low evaporation point components are put into the blast furnace, it will affect the permeability of the gas in the blast furnace because the boiling point of these substances is very low. This creates a defective evaporation-condensation cycle that makes it impossible to remove these materials during blast furnace operation.

Summary of the invention

The present invention has been made in view of the above problems in the prior art, and an object of the present invention is to provide a dust-water mixture which can be formed after mixing dust generated in steelmaking with water, and to be mixed in a dust-water mixture. An apparatus and method for separating solid particles from each other, and further, a system and method for recovering metal components in dust generated during steelmaking. As mentioned earlier, the particles in the dust have different sizes from one tenth of a meter to one thousandth of a kilometer. Among them, the main component of the fine particles is iron oxide, and the main component of the coarse particles is iron. Therefore, the fine particles whose main component is iron oxide are lower in density than the coarse particles (here also referred to as metal particles) whose main component is iron. The inventors have noticed the difference in this physical property and the characteristics of the metal particles which are affected by the magnetic field, so that it can be treated by the principle of magneto-mechanical effect. Further, the inventors conceived that in a cylinder, water is added to the dust, which is made into a dust-water mixture, which is mechanically agitated by a varying flow of water to separate fine particles and other non-metallic substances from the metal particles. The present invention has been achieved.

According to an aspect of the present invention, there is provided a magneto-mechanical device for forming a state in which solid particles in a dust or slurry are separated from each other, characterized in that the magnetomechanical device comprises: a treatment tank, in the treatment a groove is formed on the inner wall of the groove; a stirring device disposed inside the processing tank, the stirring device includes a main shaft and a stirring impeller disposed on the main shaft, and one end of the main shaft is connected to the driving device so as to be The drive device drives the spindle to rotate; a transducer mounted in the recess, the transducer capable of simultaneously generating mechanical vibrations and magnetic pulses, utilizing mechanical vibrations and magnetic pulses generated by the transducer Cooperating with the agitation movement by the agitation means to separate the solid particles in the dust-water mixture from each other.

According to another aspect of the present invention, there is provided a method of separating solid particles in a dust or slurry from each other, characterized in that the method comprises: feeding a mixture of dust and water into a treatment tank; a stirring device disposed in the processing tank is driven to rotate the main shaft of the stirring device, thereby driving the stirring impeller disposed on the main shaft to stir the dust-water mixture put into the processing tank At the same time, the transducers disposed in the grooves formed on the inner wall of the processing tank are operated to simultaneously generate mechanical vibrations and magnetic pulses; mechanical vibrations and magnetic pulses generated by the transducers and by the stirring device Stirring The interaction of the movements separates the solid particles in the dust-water mixture from each other. According to still another aspect of the present invention, a system for recovering metal components in a water-washed gas dust generated in a converter steelmaking process, characterized by comprising: a gas collection system, the gas collection system and steelmaking The converter is connected to collect gas mixed with steelmaking dust generated in the converter during the steel making process; the gas purification device, the gas mixed with the steelmaking dust collected by the gas collection system is sent to the gas a purifying device for purifying the gas and simultaneously separating the steelmaking dust from the gas; a dust collecting and storage system for collecting steelmaking dust separated in the gas purifying device; a screw separator, the fan The screw separator is used for preliminary separation of the steelmaking dust conveyed from the dust collection and storage system, so as to form a fine dust portion of the metal iron component of 70% or more and fine dust of the basic component of iron oxide, the metal The composition of iron still contains some fine dust in the coarse dust part of more than 70%; the dust-water mixture generating equipment, And a magnetic mechanical device for agitating the dust-water mixture from the dust-water mixture generating device, and simultaneously The dust-water mixture is subjected to mechanical vibration and magnetic pulse to form a state in which the solid particles in the dust-water mixture are separated from each other; an enrichment processing device for separating metal particles and solid particles in solid particles separated from each other The particles of the ingredients are separated to recover the metal species contained in the steelmaking dust.

According to still another aspect of the present invention, there is provided a method for recovering metal components in a water-washed gas dust generated in a converter steelmaking process, characterized by comprising: collecting by a gas collection system connected to a converter for steelmaking a gas mixed with steelmaking dust generated in a converter during a steelmaking process; and a gas mixed with steelmaking dust collected by the gas collection system is sent to a gas purification device, so that the gas is purified by the gas purification device Purifying and simultaneously separating the steelmaking dust from the gas; collecting the steelmaking dust separated in the gas purification device to the dust collection In the collection storage system, the steel separation dust conveyed from the dust collection and storage system is initially separated by a screw separator, so that the coarse dust portion and the basic component of the metal iron component are more than 70% fine. Dust, the metal iron component still contains some fine dust in more than 70% of the coarse dust portion; the dust-water mixture generating device is used to mix the separated coarse dust portion with water to form a dust-water mixture; The magnetic mechanical device agitates the dust-water mixture from the dust-water mixture generating device, and simultaneously mechanically vibrates and magnetically pulses the dust-water mixture so that the solid particles in the dust-water mixture form each other Separated state; the metal particles in the solid particles separated from each other are separated from the particles of the other components by the enrichment processing apparatus to recover the metal substance contained in the steelmaking dust.

According to the present invention, by making the dust generated during the processing of the steelmaking pig iron into a dust-water mixture, the particles in the dust are separated by the magnetic mechanical effect while stirring the dust-water mixture. The particles are produced during the steel making process under the action of coal gas. With the principles of the present invention, the metal species therein can be separated.

The dust of the steel plant is treated by the apparatus and method of the present invention, and the metal material whose main component is iron can be collected to form a metal concentrate. The metal enrichment can be put into a steelmaking converter to replace ordinary scrap steel, and has the following benefits: 1) its composition is similar to steel, and does not contain harmful components such as aluminum, nickel, chromium, etc.; 2) because its structure is granular Shape, so smelting it is much faster than melting steel blocks of the same weight. Thus, the application of the present invention to the treatment of dust generated during the steel making process can produce enormous economic benefits.

DRAWINGS

Figure 1 is a flow chart showing the process of treating steel mill dust.

Figure 2 (A) is a vertical sectional view of the magnetomechanical apparatus of the present invention; Figure 2 (B) is a partially cutaway perspective view of the magnetomechanical apparatus of the present invention. Figure 3 is a diagram showing the effect of a magneto-mechanical field generated in a processing tank of a magnetomechanical apparatus according to the present invention.

Fig. 4 shows the internal structure of the transducer of the present invention, wherein Fig. 4(A) is a perspective view of the magneto-mechanical device; and Fig. 4(B) is a side cross-sectional view of the transducer.

Fig. 5 (A) and Fig. 5 (B) are diagrams showing the state in which the stirring device and the impeller of the magneto-mechanical device of the present invention are mounted.

Figure 6 is a view showing a fixed blade mounted on the inner wall of the treatment tank and an effect produced during the stirring, wherein Figure 6 (A) is a partially cutaway perspective view of the magnetomechanical apparatus, Figure 6 (B) ) is a horizontal sectional view of the magnetic mechanical device, and FIG. 6 (C) is a view showing a flow state of the dust-water mixture in the treatment tank;

Fig. 7(A) is a view showing an initial state of the coarse dust to be treated; Fig. 7(B) is a view showing the separation after the particles in the dust are separated from each other after the magneto-mechanical treatment of the magnetomechanical apparatus of the present invention Fig. 7(C) is a view showing metal particles sorted from particles in a separated state; Fig. 7(D) is a view showing waste particles remaining after sorting out metal particles.

detailed description

Hereinafter, specific embodiments of the present invention will be described.

In accordance with the present invention, in order to collect the metal components of the steel mill's coarse dust, the dust is first made into a dust-water mixture, which is then placed in a magnetomechanical apparatus subjected to varying mechanical shock treatment. The magnetic mechanical device is used together with the rotating stirring device and the fixed blade, so that the mixture can be agitated by different layers, different directions and different speeds, so as to separate particles of different physical properties and different sizes, so that The metal components can be recycled in the next stage.

The mixture passes through the magneto-mechanical device during processing, and the device produces mechanical resonance with a vibration wavelength of 62 mm to 97 mm. This mixture moves the particles at different angular velocities during agitation of the varying water flow in the apparatus, which avoids the formation of vortices during spiral agitation. Keep this continuous movement, The working efficiency of the magnetic mechanical equipment can be guaranteed. Subject to this vibration principle, the mixture is subjected to the process described herein to provide conditions for enrichment by known processes.

Magnetic mechanical equipment separates metal particles by uninterrupted, high frequency shifting vibration. The magneto-mechanical device produces high operating efficiencies in two ways: 1) High-frequency magnetic pulses act on a magnetically slab surface to cause vibrations to create a varying impact front in the mixture. 2) This vibrating magnetic field acts directly on the metal particles which can be subjected to the magnetic field, so that the metal particles move little in the treated mixture, which causes different expression of the metal particles and the non-metal particles. The combination of these two methods results in the complete separation and individualization of the particles.

With regard to the energy required to moderately release and clean the particles in the mixture, the relationship between the energy and the treatment mixture is set such that the energy used can sufficiently release the particles in the treated mixture, the minimum of which is preferably not less than 10 W / liter of the treatment mixture. The separation and release rate of the solid matter in the mixture depends on the size of the particles, the density of the particles, and the volume of water required for the operation of the magnetic mechanical equipment during the treatment. Under the combination of the above factors, the particles can be completely separated and the particles can be separated. In a separate, independent state. The weight percentage of the solids in the mixture is preferably not more than 35%, and the amount of the substance having a density of less than 3.0 g/cm ³ is preferably not more than 15% of the effective treatment amount (the total amount of the dust-water mixture).

The time taken for the treatment is also an important factor in the release of the particles, which is directly dependent on the size of the particles and the amount of fine components in the material being processed. For fine particles not less than 0.125% of the large particle volume, it is treated in a magnetic mechanical device with varying agitation for about 70-120 seconds.

The magnetomechanical apparatus of the present invention for separating and releasing particles by magneto-mechanical activity has a transducer of 4 kW, which is mounted in a groove formed on the inner wall of the cylindrical groove body, and has its working face and said The inner wall of the cylindrical trough is tangent. Taking into account the natural acceleration trend of the particles downward, the effective height of the cylindrical tank is preferably its diameter Nearly 1.45 times. The transducers may be one or two. If there are two, in order to make the device work more efficiently, it is preferable to arrange the two transducers separately in the circumferential direction difference 75 along the processing tank. To 105. At two locations, more preferably, the two transducers are each disposed at a difference 90 in the circumferential direction along the processing tank. At two locations.

Preferably, the bottom of the treatment tank is tapered with a slope of 45. , Eli remove the treated material. A motor is mounted on the upper portion of the apparatus, and a reducer is attached to the motor. The reducer is mounted on a main shaft of a stirring device having four impellers, and the blades of the impeller are inserted into the mixture to operate. The vanes are mounted as follows. An impeller with large vanes can agitate the particles upwards, and an impeller with small vanes can agitate the particles downward. These blades are mounted radially at different heights of the shaft. Fixed vanes are vertically disposed on the inner wall of the treatment tank, which are mounted toward the axis of the cylindrical trough and are divided into three layers in parallel so that the rotating mixture can produce different movements in the vanes, Different curved radii are formed to avoid forming a single central vortex.

By subjecting the mixture to the treatment as described above, once the particles in the mixture are sufficiently released, the metal species can be enriched and recovered by an ordinary method.

For a large steel plant, the coarse particles contained in the mortar produced in one month are about 6,000 tons, in which case it is preferred in the apparatus for separating particles by the magneto-mechanical effect according to the present invention. There are two transducers each having a minimum of 2 kW, and, as previously described, preferably the two transducers are each disposed in a circumferential phase difference 75 along the processing tank. To 105. At two locations, more preferably, the two transducers are each disposed at a circumferential difference 90 along the processing tank. At two locations, this makes the device more efficient.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be further described in detail with reference to the accompanying drawings.

Figure 1 is a process flow showing the treatment of steel mill dust, representing the process from dust generation to separation and release, and collection to produce an iron-rich final product. Dust is Produced in the steelmaking converter 1, it is generated by the action of temperature and gas flow. When the oxygen lance 2 blows oxygen into the converter, the carbon in the pig iron is reacted with oxygen to generate gas (the main component is carbon monoxide), which is discharged outside the furnace through a gas collection system 3 and sent to a gas purification device 4 , made into clean gas 5, this clean gas is stored as energy for future use. In the process, steelmaking dust 6 is simultaneously produced, and the dust 6 is sent to the dust collection and storage system 7, and further, the dust stored in the system is collected and sent to an Akins-type screw separator 8, in the Akins type. In the screw separator, the dust is divided into two parts, the coarse part is larger than 0.045mm, which accounts for nearly 30% of the total dust, and the metal iron content is about 70%; the thin part accounts for 70% of the total dust. The basic component is iron oxide, and the content of the iron oxide is about 60%. This portion of the coarse particles 9 is sent to a magneto-mechanical device 10 for treatment, which is first made into a dust-water mixture, from which 20% to 35% of the solid matter can be separated. In the magneto-mechanical device 10, the impellers 16a and 16b are rotated for mechanical agitation while the transducers 13 operate in synchronism to separate the particles. The dust-water mixture is subjected to a magneto-mechanical motion for an average of 70-120 seconds, and the particles therein are completely separated and released. This separated material can be collected by a generally known process.

Figure 2 shows a magneto-mechanical device for separating particles by magneto-mechanical effects. It consists of a treatment tank 11, for example having a cylindrical tank, on the inner wall of which is provided a recess 12 for mounting the transducer 13, said transducer 13 being At the same time, mechanical vibrations and magnetic pulses 14 are generated which cooperate with the mechanical agitation of the agitating means 15 to separate and release the particles in the dust-water mixture. This agitating device 15 is mounted on the main shaft 15a with impellers 16a and 16b having different vanes, so that the particles in the mixture are subjected to different agitation, and in order to ensure that the rotation is smooth and easy to control, the main shaft 15a of the stirring device 15 It is mounted on a speed adjustable motor 17, and the motor 17 is equipped with a subtraction Speeder 18. In the cylindrical groove body, in order to avoid formation of a single vortex when the mixture is rotated, fixed blades 19 are vertically mounted on the inner wall of the treatment tank. The magnetic mechanical device can only be started after the dust-water mixture reaches a working height of 20.

Figure 3 shows the effect of the intersecting magneto-mechanical field in the effective working volume in the treatment tank. The two magnetomechanical devices 21 are installed at different positions in the circumferential direction of the treatment tank 11, so that mutual influence can be avoided. The effect produced by the operation of the apparatus forms a three-dimensional network 22 that works best in the effective volume of the mixture in the tank.

Figure 4 shows the internal structure of the magneto-mechanical device. This device has a hollow metal cover 23 having a magnet plate 24 mounted on one side of its working surface, on which a magnetic core 25 is mounted, and a high-strength coil 26 is wound around the magnetic core 25, The coil 26 is connected to an electrical pulse generator (not shown) such that when the generator sends an electrical pulse to the coil 26, the pulse is converted to a magnetic pulse of the same frequency, and the core enhances the contraction-magnification magnetic pulse . The magnet plate is connected to the end of the magnetic core. When the metal plate receives the magnetic pulse, mechanical vibration of the same frequency is generated, and mechanical vibration waves of the same frequency are generated in the mixture in the tank. The pulsed magnetic field generated by the coil 26 continues to attract the metal particles, while the mechanical vibration waves generated by the magnet plate cause all particles to polymerize and repel the vibration. This differential movement is combined with the agitation motion of the mixture to separate the particles from one another. That is, the magnetic mechanical device generates a magnetic field of change under the effect of the induction effect, thereby causing the device to generate magnetic pulses and mechanical vibrations, so as to achieve the desired effect of releasing the separated particles.

Figure 5 shows the installation of the blades for mechanical agitation. During the magneto-mechanical motion, the particles have a strong rate of growth and tend to deposit at the bottom of the tank, which makes the separation of the particles impossible. In order to moderately agitate the mixture, the agitating device is installed in the following manner: The small impeller 16b operates in the opposite manner to the large impeller 16a, and during the agitation of the mixture in the direction of the arrow 29, the small impeller 16b can be used as a granule Installed in a downward motion as indicated by arrow 30, the working force is less than the working force of the large impeller 16a, and the large impeller 16a can be used to make the particles Installed in an upward motion as indicated by arrow 31, the effect of this upward and downward varying motion results in a moderate, uniform agitation of the mixture, which facilitates the drying of the particles in a relatively short period of time.

Figure 6 shows the installation of the stationary vanes 33 on the inner wall of the treatment tank and the effects thereof during the mixing of the mixture. When the main agitation 32 occurs, the stationary vanes 33 create a resistance against such agitation, forming a small reverse flow 34, since the stationary vanes 33 are intermittently mounted in the vertical direction of the treatment tank, with vanes and vanes The gap, so the rotating water flow of the mixture produces different agitations 35, 36 under different rotational radii, forming different angular velocities, and this factor and the resulting shear stress prevent the formation of a single vortex.

Figure 7 (A) shows the initial state of the coarse dust 37, which is processed into a mixture and then processed by a magneto-mechanical device to remove the fine bond and the particles become separated as shown in Figure 7 (B). In Fig. 7(B), it can be observed that the particles are independent, and the solid and hollow metal particles and other non-metallic components in the coarse material can be clearly seen. After the drying out and enrichment process, as shown in Figure 7 (C) and Figure 7 (D), these particles are divided into two types: one class contains high grade metal iron 39, which accounts for the treated material. 70%, its grading envelope is between 0.025mm~0.55mm; the other is waste particles 40, which have low iron content, but high calcium oxide and silica content, can be used for cement or fertilizer Production.

Claims

Claim

A magnetic mechanical device (10) for causing solid particles in a dust or slurry to be separated from each other, characterized in that the magnetic mechanical device (10) comprises:

a treatment tank (11) having a groove (12) formed on an inner wall of the treatment tank (11); a stirring device (15) disposed inside the treatment tank (11), the stirring device (15) comprising a main shaft (15a) and a stirring impeller (16a, 16b) disposed on the main shaft (15a), one end of the main shaft (15a) is connected to a driving device for driving the main shaft (15a) by the driving device Rotate

a transducer (13) mounted in the recess (12), the transducer (13) being capable of simultaneously generating mechanical vibrations and magnetic pulses, utilizing mechanical vibrations generated by the transducer (13) and The magnetic pulse cooperates with the agitation movement by the agitating means (15) to separate the solid particles in the dust or slurry from each other.

2. The magneto-mechanical device (10) according to claim 1, wherein the transducer (13) comprises: a hollow metal cover (23) in the metal cover (23) A magnet plate (24) is mounted on an inner surface of a wall portion tangential to the inner wall of the treatment tank (11), and a magnetic core (25) is mounted on the magnet plate (24), and further, a high core is wound on the core Strength coil (26).

3. The magneto-mechanical device (10) according to claim 2, wherein the transducer (13) receives an electrical pulse from an electrical pulse generator and converts the electrical pulse into a magnetic pulse and simultaneously generates Mechanical vibration.

The magneto-mechanical device (10) according to any one of claims 1 to 3, characterized in that, on the inner wall of the processing tank (11), two grooves (12) are provided, A transducer (13) is mounted in each of the grooves (12).

The magneto-mechanical device (10) according to claim 4, wherein an angle difference between the two grooves (12) in the circumferential direction of the processing tank (11) is 75 Degree to 105 degrees.

6. The magneto-mechanical device (10) according to claim 5, characterized in that the angle difference between the two grooves (12) in the circumferential direction of the treatment tank (11) is 90 degrees.

The magneto-mechanical device (10) according to any one of claims 1 to 6, wherein the agitating impeller (16a, 16b) comprises a first agitating impeller (16a) and a second agitating impeller (16b) Wherein, the size of the blade constituting the first agitating impeller (16a) is larger than the size of the blade constituting the second agitating impeller (16b).

8. The magneto-mechanical device (10) according to claim 7, wherein the first agitating impeller (16a) is mounted in such a manner that the particles move upward, and the second agitating impeller (16b) is such that the particles Install in a way that accelerates the downward movement.

9. The magneto-mechanical device (10) according to claim 8, wherein two of said first agitating impeller (16a) and two of said second agitating impellers are disposed on said main shaft (15a) (16b).

The magneto-mechanical device (10) according to claim 9, wherein the first agitating impeller (16a) and the second agitating impeller (16b) are alternately arranged along the main axis.

The magneto-mechanical device (10) according to any one of claims 1 to 10, wherein the driving device comprises a motor (17) and a speed reducer (18) for speed-adjustable The spindle is driven.

The magneto-mechanical device according to any one of claims 1 to 11, characterized in that a plurality of fixed vanes are further provided on the inner wall of the treatment tank (11).

13. A method of separating solid particles in a dust or slurry from each other, the method comprising:

Put dust or slurry into the treatment tank (11);

The stirring device (15) disposed in the processing tank (11) is driven by a driving device to rotate the main shaft (15a) of the stirring device (15), thereby Agitating impellers (16a, 16b) disposed on the main shaft (15a) to agitate the dust or slurry charged into the treatment tank (11);

The transducer (13) disposed in the recess (12) formed on the inner wall of the processing tank (11) is operated to simultaneously generate mechanical vibration and magnetic pulse;

The solid particles in the dust or slurry are separated from each other by the combined action of mechanical vibrations and magnetic pulses generated by the transducer (13) and agitation movement by the agitation means (15).

14. A method of separating solid particles in a dust or slurry from each other according to claim 13, characterized in that the dust or slurry is carried out using the apparatus according to any one of claims 1 to 12. Separation of solid particles in.

15. A system for recovering metal components in a scrubbed gas dust produced during a converter steelmaking process, comprising:

a gas collection system (3) connected to a converter (1) for steelmaking for collecting gas mixed with steelmaking dust generated in the converter (1) during the steel making process;

a gas purification device (4), the gas mixed with the steelmaking dust collected by the gas collection system (3) is sent to the gas purification device (4) to purify the gas and simultaneously Steel dust is separated from the gas;

a dust collection and storage system (7) for collecting steelmaking dust separated in the gas purification device;

a screw separator (8) for preliminarily separating steelmaking dust conveyed from the dust collection and storage system (7) so as to form a metal iron component having a thickness of 70% or more The dust portion and the basic component are fine dust of iron oxide, and the composition of the metal iron still contains some fine dust in the coarse dust portion of 70% or more;

a dust-water mixture generating device for mixing the above-mentioned separated coarse dust portion with water and forming a dust-water mixture; a magnetic mechanical device (10) that agitates a dust-water mixture from a dust-water mixture generating device, and simultaneously mechanically vibrates and magnetically pulses the dust-water mixture to cause the dust The solid particles in the one water mixture form a state of being separated from each other;

An enrichment processing apparatus for separating metal particles in solid particles separated from each other from particles of other components to recover metal substances contained in the steelmaking dust.

16. The system for recovering metal components in a water-washed gas dust generated in a converter steelmaking process according to claim 15, wherein the magnetomechanical device (10) is any of claims 1 to 12. A magnetic mechanical device as described.

17. A method of recovering metal components in a washed gas dust produced during a converter steelmaking process, comprising:

The gas collection system (3) connected to the converter (1) for steelmaking is used to collect the gas mixed with steelmaking dust generated in the converter (1) during the steel making process;

The gas mixed with the steelmaking dust collected by the gas collecting system (3) is sent to the gas purifying device (4), so that the gas is purified by the gas purifying device (4) and the steel is simultaneously Dust is separated from the gas;

The steelmaking dust separated in the gas purification device is collected into the dust collection and storage system (7);

The steelmaking dust conveyed from the dust collection and storage system (7) is initially separated by a screw separator (8) to form a coarse dust portion having a composition of metallic iron of 70% or more and a basic component of iron oxide. Fine dust, the composition of the metal iron still has some fine dust in the coarse dust portion of 70% or more;

The above-mentioned separated coarse dust portion is mixed with water by a dust-water mixture generating device to form a dust-water mixture;

Using a magnetic mechanical device (10) to agitate the dust-water mixture from the dust-water mixture generating device, and simultaneously mechanically vibrate and magnetically pulse the dust-water mixture to make the dust-water mixture Solid particle formation a state of being separated from each other;

The metal particles in the solid particles separated from each other are separated from the particles of the other components by an enrichment processing apparatus to recover the metal substance contained in the steelmaking dust.

18. A method of recovering metal components in a water-washed gas dust produced in a converter steelmaking process according to claim 17, wherein said magnetic mechanical device (10) is any of claims 1 to 12. A magnetic mechanical device as described.