KR102050262B1 - Apparatus for High-efficiency Valuable Particle Recovery - Google Patents

Abstract

The present invention relates to a high-efficiency valuable particle collecting device. More specifically, the present invention relates to a valuable metal collecting device comprising: a first body unit having the bottom end formed of a wide-top and narrow-bottom shaped conical unit, and having a hollow space unit on the side surface of the top end sealed by a first insulation member, wherein the inlet of the hollow space unit for introducing dust including valuable metal particles is formed to deflect towards the outer side from a shaft center; a first circling inducement core penetrating the first insulation member and having one side extended to a fixed depth in the first body unit and the other side protruding from the external side of the first body unit in order to form a hollow internal space for inducing circling of the introduced dust; a discharge rod penetrating the first insulation member and having the one side extended to a fixed depth in the first body and the other side protruding toward the external side of the first body unit; a second body unit having the bottom end formed of a wide-top and narrow-bottom shaped conical unit, and having a hollow space unit to which the other side of the first circling inducement core is connected to communicate with the side surface thereof; a second circling inducement core positioned to a fixed depth in the second body unit and having a hollow internal space for inducing circling of the introduced dust; a liquid supply pipe vertically positioned inside the second body unit having one or more spray nozzles; a ″+″ lead wire connected to the first body unit and the second body unit; and a ″-″ lead wire connected to the liquid supply pipe.

Description

Apparatus for High-efficiency Valuable Particle Recovery

The present invention relates to a high-efficiency valuable particle recovery apparatus, more specifically, to recover the valuable metal contained in the dust by using the swirl flow and corona discharge, and fine dust contained in the dust through electrostatic spray and bag filter filtration The present invention relates to a valuable metal recovery device that can effectively remove the valuable metals and effectively remove the fine dust.

The steelmaking process for the production of Fe-Al-based alloys, Fe-Cu-based alloys, carbon steels, and stainless steels employs a heating melting apparatus such as an electric furnace, where iron (Fe), chromium (Cr), and nickel ( Valuable metals such as Ni) are frequently used.

It is common to generate a large amount of dust containing various heavy metal components during the above process using a hot melt device, and therefore these substances are treated as hazardous substances and classified as designated wastes under the Waste Management Act.

However, in the dust generated in the above process, valuable metals used, such as dust generated in the stainless steel making process, are about 28 wt% to 32 wt% of iron oxide, about 9 wt% to 11 wt% of chromium oxide, and nickel. Although oxides contain valuable metals in which about 3 wt% to 4 wt% are present in the form of oxides, they are collected and removed together with hazardous heavy metals and treated as specific wastes.

On the other hand, the prior art related to the recovery of valuable metals are known Korean Patent Publication No. 1611196, Korean Patent Publication No. 2012-0116556 and Korean Patent Publication No. 1126549.

Korean Patent No. 1681196 includes a positive electrode rod extending in a vertical direction and having a positive electrode plate at a bottom thereof; A disk-shaped insulating plate seated on the upper surface of the anode plate in a laminated structure; A negative electrode block provided on the insulating plate and provided with a negative electrode plate seated on a top surface of the insulating plate in a stacked structure, and having a through hole through which the positive electrode rod penetrates in a center portion thereof; A cathode cylinder seated on the cathode block so as to surround the anode rod penetrating the cathode block, and having an inner surface spaced apart from the anode rod; A first insulating block 500 that forms a cylindrical shape seated on an upper surface of the negative electrode plate and discharges the waste liquid introduced into the lower side wall in a spiral manner and then discharges to the upper surface; A cylindrical anode case seated on the first insulating block and coated with an anode layer on an inner diameter thereof; Disclosed is a valuable metal recovery device comprising a second insulating block forming a cylindrical shape seated on an upper surface of the anode case and helically flowing waste liquid introduced to the bottom surface and then discharged to the upper sidewall.

In addition, Korean Laid-Open Patent Publication No. 2012-0116556 includes a driving roller which is provided on one side of a support and rotates by receiving power from a driving motor; An electromagnet roller provided on a horizontal line of the driving roller and rotating to correspond to the rotation of the driving roller; An idle roller provided on a vertical line of the electromagnet roller and rotating to correspond to the rotation of the driving roller; And a heavy metal and valuable metal recovery apparatus using a magnetic force including a belt connecting the drive roller, the electromagnet roller and the idle roller is disclosed.

In addition, Korean Patent Publication No. 1126549 includes a collecting part for collecting dust generated in the melting furnace, a separating part connected to the collecting part to separate the particulate and vapor phase, and a cooling means connected to the separating part. And a collecting part for recovering the valuable metal, a dust collecting part connected to the collecting part to remove harmful gas and removing harmful components, a discharge part connected to the dust collecting part for discharging clean gas, and particles separated from the separating part. Disclosed is a device for recovering valuable metals from steelmaking dust comprising a storage unit for storing harmful components removed from the dust collector and a method for recovering valuable metals using the same.

 However, in the prior document, the apparatus for recovering valuable metals is very complicated or difficult to apply to recovering valuable metals contained in exhaust gas. In addition, even when the recovery of the valuable metal discharged in the form of dust is low, the recovery efficiency is low, there is a problem that can not remove the harmful fine dust contained in the dust.

Korean Registered Patent Publication No. 1611196 Korean Laid-Open Patent Publication No. 2012-0116556 Korean Registered Patent Publication No. 1126549

The present invention has been made to solve the above problems, and an object of the present invention is to provide a valuable metal recovery device having a simple structure that can easily recover valuable metals contained in dust.

In addition, an object of the present invention is to provide a valuable metal recovery device that can completely remove even the harmful fine dust contained in the dust.

Valuable metal recovery device of the present invention for solving the above problems, the lower end is made of a cone of the upper and lower strait, the inlet for inflow of dust containing the valuable metal particles in the upper side closed by the first insulating member 140 A first body portion 100 having an empty space portion formed such that 110 is deflected outward from the axis center; One side of the first body member 100 extends to a predetermined depth through the first insulating member 140, and the other side of the first body member 100 protrudes to the outside of the first body portion 100, and the inside of which leads the introduced dust to turn is empty. A first pivot induction core 120; A discharge rod 130 penetrating through the first insulating member 140 so that one side thereof extends to a predetermined depth of the first body portion 100 and the other side thereof protrudes outside the first body portion 100; A second body portion 200 having a lower portion formed of a cone of the upper and lower straits and having an empty space portion connected to the other side of the first pivoting induction core 120 in communication with a side surface thereof; A second turning induction core (210) having an empty inside to guide the introduced dust to be turned to be located at a predetermined depth in the second body (200); A liquid supply pipe 220 positioned vertically in the second body part 200 provided with one or more spray nozzles 230; A '+' lead wire 310 connected to the first body part 100 and the second body part 200; And a '−' lead wire 320 connected to the liquid supply pipe 220.

In addition, in the valuable metal recovery device of the present invention, the liquid supply pipe 220 is in communication with the main pipe 221 is located horizontally, the main pipe 221 and at least two branch pipes 222 positioned vertically downward. Although made of, the spray nozzle 230 may be horizontally connected to the branch pipe 222 outside.

In addition, in the valuable metal recovery device of the present invention, the shape that surrounds the branch pipe 222 so that the dust introduced into the second body portion 200 can move upward through the inner space of the second pivot induction core 210. The second insulating member 240 may be further provided.

In addition, in the valuable metal recovery device of the present invention, provided in the inner space of the second body portion 200, the bag filter 250 may be further provided on the liquid supply pipe 220.

In addition, in the valuable metal recovery device of the present invention, the bag filter 250 may be composed of a horizontal support 251, one or more vertical filtration unit 252 which is vertically upwardly connected to the horizontal support 251. have.

In addition, in the valuable metal recovery device of the present invention, the second pivot induction core 210 may be vertically positioned to penetrate the horizontal support 251.

In addition, in the valuable metal recovery device of the present invention, provided in the inner space of the second body portion 200, the liquid supply pipe 220 is connected to the horizontal support portion 251, the horizontal support portion 251 upwards A bag filter 250 including one or more vertical filtration units 252 positioned vertically is provided, and one side of the second pivot induction core 210 penetrates through the second insulating member 240 and is located below. The side is positioned at an upper portion through the horizontal support part 251, and the space part 270 communicating with the outlet 280 of the second body part 200 between the second insulating member 240 and the horizontal support part 251. Is provided, and the protrusion 131 may be provided on the outer surface of the discharge rod (130).

According to the valuable metal recovery device of the present invention, since recovery of valuable metals contained in dust generated in various industrial sites, such as steelmaking process, smelting process, and steelmaking process, using recovery flow and electrostatic power, recovery is very easy. In addition, there is an advantage that the impurities contained in the recovered valuable metal particles can be easily separated and purified because the recovery by the dry method.

In addition, according to the valuable metal recovery device of the present invention, an electrostatic spraying device and a bag filter are added, and thus, fine dust can be completely removed at a high efficiency and low cost, thereby contributing to the improvement of air quality.

1 is a perspective view of a valuable metal recovery device according to a preferred embodiment of the present invention.
2 is a cross-sectional view of a valuable metal recovery device according to a preferred embodiment of the present invention.
3 is a sectional view taken along line AA ′ of the valuable metal recovery device shown in FIG. 2.

Hereinafter, a valuable metal recovery apparatus according to the present invention will be described with reference to the accompanying drawings.

The terms “comprise,” “have,” or “comprise” in this application are intended to indicate that there is a feature, number, step, component, part, or combination thereof described on the specification, but one or more other. It should be understood that it does not exclude in advance the possibility of the presence or addition of features or numbers, steps, actions, components, parts or combinations thereof.

In addition, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

1 is a perspective view of a valuable metal recovery device according to a preferred embodiment of the present invention, Figure 2 is a cross-sectional view of the valuable metal recovery device according to a preferred embodiment of the present invention and Figure 3 is a valuable metal recovery device of FIG. AA 'cross section.

The present invention is a device that can contribute to the improvement of air quality by recovering valuable metals contained in the dust generated in various industrial sites, such as steelmaking process, smelting process, steelmaking process, and further remove harmful fine dust.

Valuable metal recovery apparatus according to a preferred embodiment of the present invention, as shown in Figures 1 and 2, the first body portion 100 of the cyclone shape adopting an electrostatic precipitating method for recovering the valuable metal contained in the dust, In order to remove the fine dust contained in the dust, the lower part employs an electrostatic spray method and the upper part includes a second body part 200 having a cyclone shape to which the filtration method is applied.

First, the configuration of the first body part 100 employing the electrostatic precipitating method will be described in detail. The first body part 100 has a predetermined height and an inner diameter, and the bottom part is configured to carry out the settled particles to the outside. The particle discharge pipe 150 is provided with a cone-shaped cone of the upper and lower straits, the inside of which is empty, and the upper end is a vertical tubular cylinder sealed by the first insulating member 140. In addition, the inlet 110 for inducing dust containing valuable metal is attached to the top side so as to deflect outward from the center of the shaft.

And one side extends to a predetermined depth of the space portion of the first body portion 100 and the other side of the first swing induction core protruding outside the first body portion 100 to guide the introduced dust to turn ( 120 is positioned to vertically penetrate the first insulating member 140. Therefore, when dust containing valuable metals flows into the inlet 110, the flow rate decreases while the flow rate decreases downwardly along the inner circumferential surface of the first body part 100 by the first pivoting induction core 120. The valuable metal particles contained therein settle.

In addition, one side of the first body portion 100 extends to a predetermined depth and the other side of the discharge rod 130 protruding out of the first body portion 100 wraps around the first pivot induction core 120, and the four Preferably six are located.

The discharge rod 130 discharges ions through application of a high voltage, and the generated ions are charged to charge valuable metal particles contained in the dust, thereby improving the separation efficiency of the valuable metal particles from the dust.

In more detail with respect to the configuration and operation principle, after connecting the '+' lead wire 310 to the first body portion 100, and the '-' lead wire 320 to the discharge rod 130, the high voltage Is applied. Then, the generated negative (-) ions adhere to the particulate matter and are charged, and thus the charged particulate matter is attached to the inner surface of the first body part 100 by an electric force, so that the particulate matter having a small size can be removed.

On the other hand, the discharge rod 130, the outer surface is preferably provided with a projection 131 having a triangular cross section. When the ion is discharged by applying a high voltage, the ion emission amount may decrease when the distance between the discharge rod 130 and the first body part 100 serving as the dust collecting electrode is too far. However, when the projection rod 131 having a triangular cross section is provided on the outer surface of the discharge rod 130, even if the distance between the discharge rod 130 and the first body portion 100 is long, the ion emission amount does not decrease. ) Has the advantage that the diameter can be set freely.

Next, the second body part 200 will be described. The second body portion 200 has a predetermined height and inner diameter, and the lower portion of the second body portion 200 is provided with a slurry discharge pipe 260 for carrying out the slurry containing fine dust particles attached and settled by electrostatic spray to the outside. It is the cone shape of Sangguang Strait.

And the first body portion 100 to allow the air discharged from the first body portion 100 flows into the second body portion 200 below the predetermined position side, in detail below the second insulating member 240 to be described later. The other side of the first pivot induction core 120 extending from) is connected to communicate. In addition, similar to the first body part 100, the second turning induction core 210 having an empty inside to guide the dust introduced into the second body part 200 to pivot is disposed vertically.

A second insulating member 240 having a predetermined thickness is provided to partition the inner space of the second body part 200 into upper and lower portions, and to prevent a short, while penetrating the center of the second insulating member 240. One side of the lower space, the other side is provided with a long cylindrical second turning induction core 210 is empty inside.

In addition, the main pipe 221 is positioned horizontally above the second insulating member 240 so that fine droplets can be generated through the correction spray, and the second insulating member 240 is in communication with the main pipe 221. It is further provided with a liquid supply pipe 220 made of a branch pipe 222 equipped with a spray nozzle 230 penetrating downward and vertically.

Here, the branch pipe 222 may be provided with four or more, more preferably six or more in a shape surrounding the second pivot induction core (210). In addition, it is preferable that two nozzles 230 are provided on the same horizontal line so as to face the second turning guide core 210 and the inner surface of the second body portion 200, respectively, and the height of the nozzles 230 is increased along the longitudinal direction of the nozzle 230. More preferably, two or more other pairs are provided.

For the configuration as described above, when the '+' lead wire 310 is connected to the second body part 200 and the '-' lead wire 320 is connected to the liquid supply pipe 220, a high voltage is applied to the nozzle ( Fine droplets are sprayed toward the inner wall surface of the second body portion 200 and the second pivoting induction core 210 through 230.

Conventional liquid spraying apparatus has a problem that it is difficult to collect particles having a small particle size, that is, fine dust because of the large droplets to be sprayed, as well as the use of excess liquid, thereby increasing the secondary treatment cost.

However, in the present invention, since the droplets are generated using the electrostatic spray method, the diameter of the droplets is very small. Particularly, the generated droplets have the same polarity as the poles applied to the nozzles and have a very high charge amount, so that there is no aggregation of the droplets. It is possible to maintain the initial diameter for a long time and to collect fine dust having a particle diameter of 0.1 m or less.

Referring to the principle of the electrospray method using the high voltage as described above, when positive and negative high voltages are applied while passing the conductive liquid through the nozzle, the ions in the nozzle and the liquid are repulsed and attracted. It moves to the liquid surface. At this time, when the coulomb repulsion force is greater than the surface tension, the fine droplets are sprayed. When the voltage applied to the electrode is small, the droplets are not sprayed because the electric force acting on the liquid surface and the repulsive force of the cations are smaller than the surface tension of the liquid. Increasing increases the repulsive force of the cations and the electric force acting on the liquid surface, the droplet is sprayed at the capillary tip.

Here, the high voltage is not particularly limited as long as it is capable of electrostatic spraying and the heat of the insulating material is destroyed, but may be preferably 10 kV to 50 kV.

The bag filter 250 may be further provided in the inner space of the second body part 200. In more detail, in the upper space spaced apart from the liquid supply pipe 220 by a predetermined distance, the second pivot induction core 210 is connected to the horizontal support part 251 and the horizontal support part 251 that pass through the center part, and is vertically upward. A bag filter 250 including one or more vertical filtration units 252 may be provided.

Fine dust can be effectively removed by electrostatic spraying, but in order to more completely remove the dust through the electrostatic spray to the bag filter 250 to completely remove the remaining fine dust.

Meanwhile, an outlet 280 of the second body part 200 may pass between the second insulating member 240 and the horizontal support part 251 of the bag filter 250 so that the purified air may be discharged through the bag filter 250. ) Is provided with a space portion 270 in communication with.

Although not shown in the drawing, the particle discharge pipe 140 is provided with a separate discharge valve, and is closed when dust is introduced into the first body part 100, and opens the discharge valve when a certain amount of valuable metal particles are accumulated. Recover valuable metal particles. Of course, some of the impurities may be mixed in the recovered valuable metal particles, so that impurities may be removed through a known purification method.

The sludge discharge pipe 260 is also provided with a separate discharge valve, when the dust is introduced into the first body portion 100 is closed, and when a certain amount of sludge is accumulated, the discharge valve is opened to discharge the sludge.

Hereinafter will be described the operating state of the valuable metal recovery apparatus according to the present invention.

First, the '+' lead wire 310 is connected to the first body part 100 and the second body part 200, and the '-' lead wire 320 is connected to the discharge rod 130 and the main pipe 221. The high voltage is applied while supplying water to the pipe 221. Then, negative (-) ions are generated in the first body part 100 and fine droplets are generated in the second body part 200.

With or after the above operation, when dust generated in various industrial sites, such as steelmaking process, smelting process, and steelmaking process, is introduced into the inlet 110 of the side of the first body part 100, the oil price contained in the dust The metal particles are collected by the particle discharge pipe 150 under the first body part 100, and the dust from which most of the valuable metal particles are removed is transferred to the second body part 200 via the first turning induction core 120. Inflow.

In the second body part 200, fine dust is trapped in the microdroplets generated by electrostatic spraying and is collected in the slurry discharge pipe 260 in the form of a slurry, and the dust containing some fine dust is the second turning induction core 210. Move to the top via.

The dust moved upwards is completely removed by the bag filter 250, the clean air is discharged to the outside through the outlet 280.

The specific parts of the present invention have been described in detail above, and to those skilled in the art, these specific descriptions are merely preferred embodiments, and the scope of the present invention is not limited thereto. It is apparent to those skilled in the art that various changes and modifications can be made within the scope and spirit of the art, and such variations and modifications are within the scope of the appended claims.

100: first body portion
110: entrance
120: first turning induction core
130: discharge rod 131: protrusion
140: first insulating member
150: particle discharge pipe
200: second body portion
210: second turning guide core
220: liquid supply pipe
221: main pipe 222: branch pipe
230: spray nozzle
240: second insulating member
250: bag filter
251 horizontal support 252 vertical filter
260: slurry discharge pipe
270: space part
280: exit
300: power supply
310: '+' lead wire 320: '-' lead wire

Claims (7)

The lower portion is composed of a cone of the ordinary light lower strait, and an empty space portion formed at the upper side of the upper surface sealed by the first insulating member 140 so that the inlet 110 for introducing dust containing valuable metal particles is deflected outward from the center of the shaft. Having a first body portion 100;
One side of the first body member 100 extends to a predetermined depth through the first insulating member 140, and the other side of the first body member 100 protrudes to the outside of the first body portion 100, and the inside of which leads the introduced dust to turn is empty. A first pivot induction core 120;
A discharge rod 130 penetrating through the first insulating member 140 so that one side thereof extends to a predetermined depth of the first body portion 100 and the other side thereof protrudes outside the first body portion 100;
A second body part 200 having a conical part of the upper and lower straits, and having an empty space part connected to the other side of the first pivot induction core 120 in communication with a side surface thereof;
A second turning induction core (210) having an empty inside to guide the introduced dust to be turned at a predetermined depth in the second body (200);
A liquid supply pipe 220 positioned vertically in the second body part 200 provided with one or more spray nozzles 230;
A '+' lead wire 310 connected to the first body part 100 and the second body part 200; And
It includes a '-' lead wire 320 connected to the liquid supply pipe 220,
A second insulating member 240 is formed to surround the branch pipe 222 so that the dust introduced into the second body part 200 moves upwardly through the inner space of the second pivoting induction core 210. ,
One or more vertical filtration units provided in the inner space of the second body part 200 and connected to the horizontal support part 251 and the horizontal support part 251 above the liquid supply pipe 220 and vertically positioned upwardly. A bag filter 250 made of 252 is provided,
The second pivot induction core 210 is located at one side through the second insulating member 240 and the other side is located at the top through the horizontal support 251,
Between the second insulating member 240 and the horizontal support portion 251 is provided a space portion 270 in communication with the outlet 280 of the second body portion 200,
Valuable metal recovery device, characterized in that the protrusion 131 is provided on the outer surface of the discharge rod (130).
The method of claim 1,
The liquid supply pipe 220 is composed of two or more branch pipes 222 vertically downward while communicating with the main pipe 221 is horizontally positioned, the main pipe 221, the spray nozzle 230 Valuable metal recovery device, characterized in that the horizontally connected to the branch pipe (222) outside.
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