KR102230535B1 - Apparatus for drying and grinding sludge - Google Patents

Abstract

An apparatus for drying and grinding sludge is provided. The apparatus for drying and grinding sludge according to an embodiment of the present invention includes: a chamber into which iron sludge is introduced; a rotating body provided at the lower side of the chamber to provide centrifugal force to grind the iron sludge; and a filter provided at the upper side of the chamber to selectively pass the ground iron sludge according to the size thereof.

Description

Sludge drying and grinding device TECHNICAL FIELD

The present invention relates to an apparatus for drying and pulverizing sludge.

Although domestic steel manufacturers possess the world's best steel manufacturing technology, they are insufficient in terms of recycling of high-content iron raw material by-products generated in large quantities in these steel mills. In order to secure competitiveness and differentiation at home and abroad in the future, actively develop technologies for recycling unused by-products. Is being demanded.

Currently, some domestic manufacturers produce about 500,000 tons of high-content iron raw materials (steel sludge) generated in the steel-making process per year, and only some of them are manufactured from small pellets, cold pellets, briquettes, etc. Therefore, it is partially reused in sintering, blast furnace and converter processes. Most of these have problems such as excessive drying energy consumption due to supersaturated moisture, difficulty in homogeneous mixing/mixing, and short life of the briquetting machine, and thus suffer a lot of technical difficulties in their recycling. Therefore, in order to recycle the sludge, moisture in the sludge must be removed first, and pulverization to an appropriate particle size is required in order to manufacture in the form of recycling such as pellets or briquettes.

The conventional sludge drying and pulverizing apparatus separates and drys the sludge and water through a high-speed rotating body at the bottom of the chamber. Particles and moisture that have been subdivided and separated from each other are suspended in the air by a rotating airflow generated by a high-speed rotating body, and those separated and suspended are discharged to an outlet located at the top of the chamber. At this time, the particle size of the discharged sludge can be adjusted through a filter (cylindrical rotary classifier) installed at the front of the discharge port, and as the rotational speed is increased, larger particles cannot escape, so the size of discharged particles can be reduced. However, the particle size control by the rotational speed is not easy to match the particle size required in the actual commercial operation because the resolution is not fine.

KR 2019-0104849 A (2019.09.11)

In order to solve the problems of the prior art as described above, an embodiment of the present invention is to provide a sludge drying and pulverizing apparatus capable of improving the particle size control resolution.

However, the problem to be solved by the present invention is not limited to the problems mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention for solving the above problems, the chamber into which the iron-making sludge is introduced; A rotating body provided at the lower side of the chamber to provide a centrifugal force to crush the steel sludge; And a filter provided on the upper side of the chamber to selectively pass the pulverized steel sludge according to size.

In one embodiment, the filter is a cylindrical filter body; An opening provided in the filter body in a longitudinal direction at every first interval and having a first width; And an adjustment unit provided inside the filter body to adjust at least one of an area and a width of the opening.

In one embodiment, the adjustment unit may be provided to be slidable inside the filter body.

In one embodiment, the openings may be divided into a plurality of openings in the longitudinal direction of the filter body, and the adjustment unit may be divided to individually adjust the plurality of openings.

In one embodiment, the filter body is a filter outer cylinder provided with the opening; And a filter inner cylinder provided with the control unit.

In one embodiment, the opening may be adjusted by rotating any one of the filter outer cylinder and the filter inner cylinder.

In one embodiment, the filter inner cylinder is provided with a second width at each second interval, wherein the second interval corresponds to the first width of the opening, and the second width corresponds to the first interval of the opening. You can respond.

In one embodiment, the adjusting unit may be divided into a plurality of pieces in the longitudinal direction of the filter inner cylinder, and the divided adjusting unit may be provided at different positions in the circumferential direction of the filter inner cylinder.

In an embodiment, the plurality of adjustment units may be repeatedly provided in the same pattern, the same pattern may be provided at a third interval, and the third interval may correspond to the first width.

In one embodiment, the plurality of adjustment units may be provided with different widths in the longitudinal direction of the filter inner cylinder.

The sludge drying and pulverizing apparatus according to an embodiment of the present invention is capable of reducing environmental pollution by increasing the utilization of by-products generated in the steel manufacturing process by rapidly drying the steel-making sludge with a high-speed crash jet air drying method. At the same time, it can be reused as a substitute for iron raw materials to improve economic efficiency.

In addition, in the present invention, by discharging the pulverized steel sludge in the chamber by size by the gap adjusting filter in the chamber, the size of the pulverized iron making sludge can be precisely controlled and the particle size of various sizes can be adjusted by a combination of the interval and the existing rotation speed This is possible.

In addition, the present invention can reduce the total power consumption of the sludge drying and pulverizing apparatus because the filter is limitedly driven only when the size or discharge amount of the sludge of the steelmaking process is changed.

In addition, according to the present invention, by providing the filter opening and the control unit to be divided in the longitudinal direction, only some of the openings in the filter can be selectively adjusted, so that the discharge size of the seasonal sludge can be variously adjusted.

In addition, the present invention includes a filter inner cylinder integrally provided with an adjustment unit, and all the adjustment units are driven as the filter inner cylinder rotates, thereby simplifying control or driving of the adjustment unit.

In addition, according to the present invention, by providing the control unit to be divided to have a constant pattern in the longitudinal direction and the circumferential direction, it is possible to collectively and simplify the control of various sizes or discharge amounts of the pulverized steel-making sludge according to the pattern of the control unit.

1 is a schematic configuration diagram of a sludge drying and pulverizing apparatus according to an embodiment of the present invention,
2 is a cross-sectional view schematically showing a cross-section of the chamber of FIG. 1,
3 is a perspective view of an example of a filter of the sludge drying and pulverizing apparatus according to an embodiment of the present invention,
4 is a plan view of an example of the filter of FIG. 3,
5 is a perspective view of a modified example of the filter of FIG. 3,
6 is a perspective view of another example of a filter of the sludge drying and pulverizing apparatus according to an embodiment of the present invention,
7 is a plan view of another example of the filter of FIG. 6,
Figure 8 is a side view of the filter inner cylinder of another example of the filter of the sludge drying and pulverizing apparatus according to an embodiment of the present invention,
9 is a side view of the filter outer cylinder of another example of the filter of the sludge drying and pulverizing apparatus according to an embodiment of the present invention,
10 is a side view showing a first state of another example of a filter of the sludge drying and pulverizing apparatus according to an embodiment of the present invention,
11 is a side view showing a second state of another example of a filter of the sludge drying and pulverizing apparatus according to an embodiment of the present invention,
12 is a side view showing a third state of another example of a filter of the sludge drying and pulverizing apparatus according to an embodiment of the present invention,
13 is a graph of experimental results for a modified example of the filter of the sludge treatment apparatus according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art may easily implement the present invention. The present invention may be implemented in various different forms and is not limited to the embodiments described herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and the same reference numerals are assigned to the same or similar components throughout the specification.

The embodiments of the present invention are provided to more fully describe the present invention to those of ordinary skill in the art, and the embodiments described below may be modified in various other forms, and The scope is not limited to the following examples. Rather, these examples are provided to make the present invention more faithful and complete, and to fully convey the spirit of the present invention to those skilled in the art.

Hereinafter, embodiments of the present invention will be described with reference to the drawings schematically showing embodiments of the present invention. In the drawings, for example, depending on manufacturing techniques and/or tolerances, variations of the illustrated shape can be expected. Accordingly, the embodiments of the present invention should not be construed as being limited to the specific shape of the region shown in the present specification, but should include, for example, a change in shape caused by manufacturing.

1 is a schematic configuration diagram of a sludge drying and pulverizing apparatus according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view schematically showing a cross section of the chamber of FIG. 1.

Referring to FIG. 1, a sludge drying and pulverizing apparatus 10 according to an embodiment of the present invention includes an object input unit 11, a chamber 100, a pipe 12, and a cyclone 13.

The sludge drying and pulverizing device 10 is for pulverizing and drying iron-made sludge by applying a high-speed crash jet drying method.

Thereby, the sludge drying and pulverizing device 10 can increase the utilization of a large amount of by-products generated in the steel manufacturing process to suppress environmental pollution caused by the discharge of by-products, and at the same time, reuse the by-products as a substitute for iron materials to improve economic efficiency. have.

The object input unit 11 may guide the sludge in season to the input port 120 of the chamber 100. It may include a storage container (11a) and a conveyor (11b).

The storage container 11a may have various shapes and may temporarily store seasonal sludge. The conveyor 11b may move the seasonal sludge discharged from the storage container 11a to the object input unit 11 of the chamber 100.

In the chamber 100, seasonal sludge may be injected. The chamber 100 may pulverize the object and discharge it to the cyclone 13. In addition, the chamber 100 may simultaneously dry and sterilize the sludge made in season. Here, the chamber 100 may pulverize and dry the steel-making sludge in a manner that removes moisture by causing mutual collision of the steel-making sludge particles by a high-speed rotating airflow.

The pipe 12 may connect the outlet 110 of the chamber 100 and the cyclone 13. The pipe 12 may guide the iron-made sludge discharged from the chamber 100 to the cyclone 13.

The cyclone 13 may separate moisture from the pulverized steel sludge. That is, the cyclone 13 may separate the pulverized steel sludge into moisture and dried steel sludge. Here, the cyclone 13 may discharge the dried steel sludge to the outside. In addition, the cyclone 13 may discharge water separated from the steel sludge to a sewage treatment plant.

As shown in FIG. 2, the chamber 100 may include an outlet 110, an inlet 120, a rotating body 130, a conversion unit 140, and a filter 150.

The discharge port 110 is provided in the upper center of the chamber 100 and may discharge the pulverized steel sludge in the chamber 100 to the cyclone 13.

The inlet 120 is provided on the other side of the upper chamber 100, and seasonal sludge may be introduced from the conveyor 11b.

The rotating body 130 may be provided at the lower side of the chamber 100 to provide a centrifugal force to pulverize the iron-making sludge. At this time, the rotating body 130 may disperse and first pulverize the iron-making sludge by centrifugal force. In addition, the rotating body 130 may form a high-speed turbulence (rotating airflow) in the chamber 100.

The conversion unit 140 may be provided on the upper side of the rotating body 130 in the chamber 100. The conversion unit 140 may convert the airflow caused by the centrifugal force of the rotating body 130 into a high-speed rotating airflow. Here, the steel sludge may pass through a narrow and long passage between the conversion unit 140 and the chamber 100 through the airflow generated by the rotating body 130. At this time, the airflow including the iron-making sludge is converted into a rapid turbulent flow, and a high-speed rotating airflow used for pulverization, drying, and sterilization of the iron-making sludge may be generated at the upper portion of the conversion unit 140 in the chamber 100.

The filter 150 may be provided directly under the outlet 110 in the chamber 100. The filter 150 may be installed rotatably or fixed to the chamber 100. The filter 150 may pass the steel sludge rising by the airflow in the chamber 100 through the discharge port 110. In this case, the filter 150 may selectively pass through the pulverized steel sludge in the chamber 100 according to the size, as will be described later.

Accordingly, the configuration of the chamber 100 may be simplified because the filter 150 may omit a driving means that continuously operates to discharge the pulverized seasonal sludge according to the size. In addition, since the filter 150 does not require power to operate the driving means, the total power consumption of the sludge drying and pulverizing apparatus 10 may be reduced.

3 is a perspective view of an example of a filter of the sludge drying and pulverizing apparatus according to an embodiment of the present invention, and FIG. 4 is a plan view of an example of the filter of FIG. 3.

The filter 150 may include a filter body 151, an opening 152 and an adjustment part 153.

The filter body 151 may have a cylindrical shape. In addition, the filter body 151 may have a hollow portion formed in the center for discharging the sludge treated in the chamber 100. At this time, the filter body 151 is opened so that one side communicates with the outlet 110, but the other side may be sealed. That is, the filter body 151 may have a cylindrical shape with one open surface.

The opening 152 may be provided in a longitudinal direction along the outer circumferential surface of the filter body 151. In this case, the opening 152 may be provided with a first width at each first interval. Here, the first width may correspond to the size of the pulverized steel sludge. For example, the first width may correspond to the maximum diameter of the pulverized steel sludge.

The adjusting part 153 may be provided inside the filter body 151. In this case, the adjustment unit 153 may be provided in a shape corresponding to the shape of the opening 152. For example, the adjustment unit 153 may be a rod having a shape corresponding to the shape of the opening 152.

In addition, the adjustment unit 153 may be provided to be slidable. That is, as shown in FIG. 4, the adjustment unit 153 may slide horizontally along the inner circumferential surface of the filter body 151. In this case, the adjustment unit 153 may adjust the opening 152 by horizontally sliding around the opening 152. For example, at least one of the area and width of the opening 152 may be adjusted.

Accordingly, the overall configuration of the chamber 100 may be simplified by simplifying the configuration of the filter 150 and omitting the driving means continuously operating to discharge the pulverized steel sludge according to the size.

Here, as the area of the opening 152 is adjusted, the amount of the seasonal sludge discharged through the filter 150 may be adjusted. In addition, as the width of the opening 152 is adjusted, the size of the seasonal sludge discharged through the filter 150 may be adjusted.

The adjustment unit 153 may be driven to slide by the motor 160. However, the means for driving the adjustment unit 153 is not particularly limited.

5 is a perspective view of a modified example of the filter of FIG. 3.

Referring to FIG. 5, the filter 150 ′ may be divided into a plurality of openings 152 ′ with respect to the longitudinal direction of the filter body 151 ′. For example, the opening 152 ′ may include an upper opening 1521 and a lower opening 1522 in the longitudinal direction of the filter body 151 ′. In this case, the filter body 151 ′ may include an upper body 1511 and a lower body 1512.

Here, while the pulverized iron making sludge floats in the chamber 100, in particular, in the vicinity of the filter 150, depending on the size of the pulverized steel sludge, the floating position is different. For example, the smaller the size of the seasonal sludge is positioned above the filter 150, the larger the size of the steel sludge is positioned below the filter 150.

Therefore, the upper opening 1521 can pass through the small-sized seasonal sludge. In addition, the lower opening 1522 may pass through the large-sized iron-making sludge compared to the upper opening 1521.

In this case, the adjustment unit 153 ′ may be divided to individually adjust the upper opening 1521 and the lower opening 1522. That is, the adjusting part 153 ′ may include an upper adjusting part 1531 and a lower adjusting part 1532.

In this case, the filter 150 ′ may adjust the amount of the iron-making sludge discharged depending on whether one of the upper opening 1521 and the lower opening 1522 is opened or both of the upper opening 1521 and the lower opening 1522 are open. In addition, the filter 150 ′ may adjust the size of the discharged seasonal sludge depending on whether one of the upper opening 1521 and the lower opening 1522 is opened.

Optionally, the filter 150 ′ may pass different sizes of seasonal sludges according to the widths of the upper opening 1521 and the lower opening 1522. In this case, the widths of the upper opening 1521 and the lower opening 1522 and the widths of the upper and lower adjustment parts 1531 and 1532 may be different from each other according to the size of the ferrous sludge passed.

Accordingly, since the filter 150 ′ can selectively adjust only some of the openings 152 ′, it is possible to variously control the discharge size of the seasonal sludge compared to the single configuration shown in FIG. 3.

6 is a perspective view of another example of a filter of the sludge drying and pulverizing apparatus according to an embodiment of the present invention, and FIG. 7 is a plan view of another example of the filter of FIG. 6.

Referring to FIG. 6, the filter 250 may include an outer filter cylinder 250a and an inner filter cylinder 250b as a filter body. Here, the filter outer cylinder 250a may correspond to the filter body 151 of FIG. 3. That is, the filter outer cylinder 250a may be provided with an opening 252 that is the same as or similar to the opening 152 of the filter body 151.

The filter inner cylinder 250b may correspond to the adjusting part 153 of FIG. 3 and the adjusting part 153 ′ of FIG. 5. Here, the filter inner cylinder 250b may be integrally provided with the adjusting part 153 of FIG. 3 and the adjusting part 153 ′ of FIG. 5.

For example, the filter inner cylinder 250b may have a cylindrical shape in which one side is open and the other side is sealed similar to the filter outer cylinder 250a. Here, the filter inner cylinder 250b may have an adjustment part 253 provided in the longitudinal direction along its outer circumferential surface.

As shown in FIG. 7, the adjustment unit 253 may be provided with a second width at every second interval. Here, the second interval of the adjustment unit 253 may correspond to the first width of the opening 252. In addition, the second width of the adjustment unit 253 may correspond to the first interval of the opening 252. That is, the filter outer cylinder 250a and the filter inner cylinder 250b may have similar shapes.

In FIG. 6, the adjusting part 353 forms the outer circumferential surface of the filter inner cylinder 250b, and the interval between the adjusting parts 353 corresponds to a groove formed on the outer circumferential surface of the filter inner cylinder 250b, but is not limited thereto. For example, the adjusting part 353 may be provided to protrude from the outer peripheral surface of the filter inner cylinder 250b. That is, the filter inner cylinder 250b may be formed integrally with the outer circumferential surface not having a groove. In this case, the interval between the adjustment units 353 may correspond to the outer circumferential surface of the filter inner cylinder 250b.

At this time, any one of the filter outer cylinder 250a and the filter inner cylinder 250b may be rotated by the motor 160. That is, since one of the filter outer cylinder 250a and the filter inner cylinder 250b is rotated and the other is fixed, the area or width of the opening 252 can be adjusted by the adjustment unit 353.

As a result, the filter 250 can control or drive the control unit 353 at once as all the control units 353 are driven simultaneously as the filter inner cylinder 250b rotates with respect to the filter outer cylinder 250a. have. Accordingly, the filter 250 can simplify the control or driving of the control unit 353.

8 is a side view of the filter inner cylinder of another example of the filter of the sludge drying and grinding device according to an embodiment of the present invention, and FIG. 9 is a filter outer cylinder of another example of the filter of the sludge drying and grinding device according to an embodiment of the present invention. It is a side view of.

Referring to FIG. 8, the adjusting part 353 may be divided into a plurality of pieces in the longitudinal direction of the filter inner cylinder 350b. In this case, the divided adjusting part 353 may be provided at different positions in the circumferential direction of the filter inner cylinder 350b.

For example, the adjustment unit 353 may be divided into two with respect to the longitudinal direction of the filter inner cylinder 350b and may be provided on the upper and lower sides of the filter inner cylinder 350b in the circumferential direction, respectively. More specifically, the adjustment unit 353 may be provided only on the upper side and the lower side of the filter inner cylinder (350b), respectively. Here, the lower adjustment part 353 may be provided with a first height h1 and a third width t2. In addition, the upper adjustment part 353 may be provided with a second height h2 and a fourth width t1.

Here, the first height h1 and the second height h2 may be the same. However, the first height h1 and the second height h2 may be set differently according to the size or discharge amount of the seasonal sludge discharged by the filter 350. That is, the plurality of adjustment units 353 may be provided at different heights with respect to the circumferential direction of the filter inner cylinder 350b.

In addition, the third width t2 and the fourth width t1 may be the same. However, the third width t2 and the fourth width t1 may be set differently according to the size or discharge amount of the seasonal sludge discharged by the filter 350. That is, the plurality of adjustment units 353 may be provided with different widths in the longitudinal direction of the filter inner cylinder 350b.

The plurality of adjustment units 353 may be repeatedly provided in the same pattern. For example, the adjustment unit 353 may have the same pattern at a third interval t3. Here, the third interval t3 may correspond to the width of the opening 352 as described later.

Referring to FIG. 9, the opening 352 may be provided in the same or similar to the opening 152 of FIG. 3 and the opening 252 of FIG. 6.

Here, the opening 352 may be provided with a first width w1 like the opening 152 of FIG. 3 and the opening 252 of FIG. 6. In addition, the openings 352 may be provided at every fourth interval w2. In this case, the fourth interval w2 may be the sum of the fourth width t1 of the upper adjustment part 353 and the third width t2 of the lower adjustment part.

10 is a side view showing a first state of another example of a filter of the sludge drying and pulverizing apparatus according to an embodiment of the present invention, and FIG. 11 is a side view of another example of the filter of the sludge drying and pulverizing apparatus according to an embodiment of the present invention. It is a side view showing a second state, and FIG. 12 is a side view showing a third state of another example of the filter of the sludge drying and pulverizing apparatus according to an embodiment of the present invention.

Referring to FIG. 10, when the opening 352 is positioned to overlap the lower adjustment part 353, a first area a through which the seasonal sludge passes is formed on the upper side of the filter 350. In this case, the opening 352 may pass through a relatively small sized iron-making sludge floating on the upper side of the filter 350.

Here, when the fourth width t1 of the upper adjustment part 353 is larger than the third width t2 of the lower adjustment part 353, the upper adjustment part 353 is extended into the opening 352 and thus the opening ( The first area (a) of 352) may decrease. Thereby, the opening 352 may reduce the amount of iron-making sludge discharged by the filter 350.

In addition, when the first height h1 of the lower adjustment part 353 is greater than the second height h2 of the upper adjustment part 353, the lower adjustment part 353 overlapping the opening 352 increases, so the opening The first area (a) of (352) can be reduced. Thereby, the opening 352 can pass only the smaller sized seasonal sludge floating on the upper side of the filter 350.

Conversely, when the first height h1 of the lower adjustment part 353 is smaller than the second height h2 of the upper adjustment part 353, the lower adjustment part 353 overlapping the opening 352 decreases, so the opening The first area (a) of 352 can be increased. As a result, the opening 352 can pass to a larger sized steel sludge floating to a lower portion of the filter 350.

Referring to FIG. 11, when the opening 352 is positioned to overlap with the gap between the patterns of the adjusting part 353, the second area b through which the seasonal sludge passes is formed over the entire length of the filter 350. That is, the second area b is formed on both the upper and lower sides of the filter 350. In this case, the opening 352 may pass through the steel sludge floating on both the upper and lower sides of the filter 350. As a result, the opening 352 can discharge both the relatively small size of the seasonal sludge and the relatively large size of the seasonal sludge at the same time.

Here, when the distance t3 between the upper adjustment part 353 and the lower adjustment part 353 is smaller than the first width w1 of the opening 352, the upper adjustment part 353 and the lower adjustment part 353 Since) is extended into the opening 352, the second area b of the opening 352 may be reduced. Thereby, the opening 352 may reduce the amount of iron-making sludge discharged by the filter 350.

Referring to FIG. 12, when the opening 352 is positioned to overlap the upper adjustment part 353, a third area a through which the seasonal sludge passes is formed under the filter 350. In this case, the opening 352 may pass through a relatively large-sized iron-making sludge floating under the filter 350.

Here, when the third width t2 of the lower adjusting part 353 is larger than the fourth width t1 of the upper adjusting part 353, the lower adjusting part 353 is extended into the opening 352 and thus the opening ( The third area (c) of 352) may be reduced. Thereby, the opening 352 may reduce the amount of iron-making sludge discharged by the filter 350.

In addition, when the second height h2 of the upper adjustment part 353 is greater than the first height h1 of the lower adjustment part 353, the upper adjustment part 353 overlapping the opening 352 increases, so the opening The third area (c) of (352) may be reduced. Thereby, the opening 352 can pass only the larger-sized seasonal sludge floating on the lower side of the filter 350.

Conversely, when the second height h2 of the upper adjustment part 353 is smaller than the first height h1 of the lower adjustment part 353, the upper adjustment part 353 overlapping the opening 352 decreases, so the opening The third area (c) of (352) can be increased. Thereby, the opening 352 can pass through to the smaller sized seasonal sludge floating to the upper portion of the filter 350.

Accordingly, as the filter inner cylinder 350b rotates with respect to the filter outer cylinder 350a, all the adjustment units 353 are simultaneously driven, and the discharge size of the seasonal sludge can be diversified, so the adjustment unit 353 ) Can be controlled or driven according to the pattern of the control unit 353 in a lump-sum and simplified manner.

13 is a graph of experimental results for a modified example of the filter of the sludge treatment apparatus according to an embodiment of the present invention.

The filter 150 as shown in FIG. 5 was manufactured and the particle size of the steelmaking sludge passing through while adjusting the opening 151 was measured. Here, the total width of the upper opening 1521 and the lower opening 1522 was 25 mm.

Referring to FIG. 13, when both the upper opening 1521 and the lower opening 1522 are completely opened (upper and lower 100%), that is, when the width is 25 mm, the particle size of the steelmaking sludge mainly passing through is 90 to 97 μm Was. When the upper opening 1521 is completely open and the lower opening 1522 is completely closed (upper 100%, lower 0%), the particle size of the steelmaking sludge mainly passed was 51-60 μm. When the lower opening 1522 is completely open and the upper opening 1521 is completely (upper 0%, lower 100%), the particle size of the steelmaking sludge passed through was 63 to 68 µm. When both the upper opening 1521 and the lower opening 1522 were opened only 1/4 (up and down 25%), that is, when the size was 6.25 mm, the particle size of the steelmaking sludge mainly passed was 33 to 40 μm.

Although an embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented in the present specification, and those skilled in the art who understand the spirit of the present invention can add components within the scope of the same idea. Other embodiments may be easily proposed by changes, deletions, additions, etc., but it will be said that this is also within the scope of the present invention.

10: sludge drying and grinding device 11: object input unit
11a: storage container 11b: conveyor
12: piping 13: cyclone
100: chamber 110: outlet
120: inlet 130: rotating body
140: conversion unit 150, 150', 250, 350: filter
151, 151': filter body 152, 152', 252, 352: opening
153, 153', 253, 353: control unit 250a, 350a: filter outer cylinder
250b, 350b: filter inner cylinder

Claims (10)

delete A chamber into which the seasonal sludge is input;
A rotating body provided at the lower side of the chamber to provide a centrifugal force to crush the iron-making sludge; And
Includes; a filter provided on the upper side of the chamber to selectively pass the pulverized steel sludge according to size,
The filter,
A cylindrical filter body;
An opening provided in the filter body in a longitudinal direction at every first interval and having a first width; And
It is provided on the inside of the filter body and includes an adjustment unit for adjusting at least one of the area and the width of the opening,
The opening is divided into a plurality of the lengthwise direction of the filter body,
The sludge drying and pulverizing device is divided so as to individually adjust the plurality of openings. The method of claim 2,
The sludge drying and pulverizing apparatus provided to be slidably inside the control unit in the filter body. A chamber into which the seasonal sludge is input;
A rotating body provided at the lower side of the chamber to provide a centrifugal force to crush the iron-making sludge; And
Includes; a filter provided on the upper side of the chamber to selectively pass the pulverized steel sludge according to size,
The filter,
A cylindrical filter body;
An opening provided in the filter body in a longitudinal direction at every first interval and having a first width; And
It is provided on the inside of the filter body and includes an adjustment unit for adjusting at least one of the area and the width of the opening,
The filter body,
A filter outer cylinder provided with the opening; And
It includes a filter inner cylinder provided with the control unit,
The filter inner cylinder is provided with a second width at each second interval, wherein the second interval corresponds to the first width of the opening, and the second width corresponds to the first interval of the opening. Device. A chamber into which the seasonal sludge is input;
A rotating body provided at the lower side of the chamber to provide a centrifugal force to crush the iron-making sludge; And
Includes; a filter provided on the upper side of the chamber to selectively pass the pulverized steel sludge according to size,
The filter,
A cylindrical filter body;
An opening provided in the filter body in a longitudinal direction at every first interval and having a first width; And
It is provided on the inside of the filter body and includes an adjustment unit for adjusting at least one of the area and the width of the opening,
The filter body,
A filter outer cylinder provided with the opening; And
It includes a filter inner cylinder provided with the control unit,
The control unit is divided into a plurality of the lengthwise direction of the filter inner cylinder,
Sludge drying and pulverizing device provided at different positions in the circumferential direction of the filter inner cylinder. The method according to claim 4 or 5,
Sludge drying and pulverizing apparatus in which the opening is adjusted by rotating any one of the filter outer cylinder and the filter inner cylinder. delete delete The method of claim 5,
The plurality of adjustment units are repeatedly provided in the same pattern,
The same pattern is provided at a third interval,
The third interval is a sludge drying and grinding device corresponding to the first width. The method of claim 5,
Sludge drying and pulverizing apparatus provided with the plurality of control units having different widths with respect to the longitudinal direction of the filter inner cylinder.

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