WO2015009005A1 - Apparatus for manufacturing briquette - Google Patents

Abstract

Provided is an apparatus for manufacturing a briquette comprising: a mixer for manufacturing a mixture by mixing powdered coal and a binder so as to more surely pulverize lump coals and minimize adhering coals when pulverizing the coals; a gravity feeder, connected to the lower end of the mixer, for supplying the mixture; a molder, connected to the lower end of the gravity feeder, for molding the mixture supplied from the gravity feeder; and a pulverizer, installed at the top end of the gravity feeder, for pulverizing the mixture introduced into the gravity feeder, wherein the pulverizer comprises a rotor, which is rotatably installed inside a housing and at a distance away in the axial direction from which a pulverizing plate is installed, a driving portion for rotating the rotor, and a scraper member, installed inside the housing and arranged on the front surface of the pulverizing plate, for scraping off the mixture adhered to the pulverizing plate.

Description

Coal briquette manufacturing apparatus

The present invention relates to a coal briquette manufacturing apparatus. More specifically, the present invention relates to a coal briquette manufacturing apparatus that is capable of minimizing coal adhesion during mass crushing.

In the molten iron reduction method, a reduction furnace for reducing iron ore and a melt gasification furnace for melting the reduced iron ore are used. When iron ore is melted in a melt gasifier, coal briquettes are charged into a melt gasifier as a heat source for melting iron ore. Here, the reduced iron is melted in the molten gasifier is converted to molten iron and slag and then discharged to the outside. The coal briquettes charged into the melt gasifier form a coal filling layer. Oxygen is blown through the tuyere installed in the melt gasifier and then burns the coal packed bed to produce combustion gas. Combustion gas is converted into hot reducing gas while rising through the coal-filled bed. The high temperature reducing gas is discharged to the outside of the melt gasification furnace and supplied to the reduction furnace as reducing gas.

The coal briquettes should be able to increase the reaction efficiency and heat transfer efficiency between the materials by securing the air permeability and liquid permeability for the smooth passage of gas and liquid in the molten gasifier. To this end, the coal briquettes are mixed into coal containing molten water and molasses as a binder, and then press-molded in a molding machine to produce briquettes having a predetermined size.

The molding machine is composed of two compression molding rolls arranged at the bottom and a feed feeder (gravity feeder) arranged at the top to feed coal to the forming rolls. In addition, the feed feeder is provided with a chopper for crushing the bulky coal among the coals supplied to the feed feeder. When the bulk coal flows into the feed feeder as it is, it grows into a ball of large diameter that degrades the quality of the coal briquettes. The chopper device has a structure of crushing massive coals by rotating a rotating shaft provided with a plurality of crushing plates.

However, in the prior art, in the process of crushing coal, coals mixed with moisture and sticky molasses were frequently attached to plates. Therefore, the chopper device does not properly crush the massive coal, resulting in deterioration of the quality of the coal briquettes.

Provided is a coal briquette production apparatus that can crush lumped coals more reliably.

In addition, there is provided a coal briquette manufacturing apparatus that can minimize the generation of coal briquettes during coal crushing.

To this end, the coal briquette manufacturing apparatus of the present embodiment comprises a mixer for mixing a powdered coal and a binder to prepare a mixture, a feed feeder connected to the bottom of the mixer to supply the mixture, and a blended feed from the feed feeder connected to the bottom of the feed feeder. And a crusher installed at the top of the feed feeder to crush the mixture flowing into the feed feeder, wherein the crusher is rotatably installed in the housing and provided with crushing plates at intervals along the axial direction, and the rotary rotor. It may include a drive unit for rotating the scraper member installed in the housing and disposed on the front of the crushing plate scraping the mixture attached to the crushing plate.

At least two rotary rotors may be provided to be disposed in parallel in the housing, and the crushing plates installed in the respective rotary rotors may be alternately disposed between neighboring rotary rotors.

The scraper member extends toward the shredding plate and is formed with a groove through which the shredding plate passes at a position corresponding to the shredding plate of the rotary rotor, and scrapes the mixture attached to the shredding plate, and is connected to the bottom of the upper end and shredding plate of the rotary rotor. It may include a lower end extending beyond the tip to guide the mixture.

The scraper member may have a structure in which an upper end portion of the scraper plate is inclined with respect to the rotational direction of the rotary rotor.

The two neighboring rotary rotors may have a structure in which rotation directions are different from each other.

The two neighboring rotary rotors may have a structure in which rotation speeds are different from each other.

It may further include a reduction gear unit which is installed between the shafts of two neighboring rotary rotor to change the relative rotational speed of the two rotary rotor.

Among the two neighboring rotary rotors, the crushing plate installed in one rotating rotor may have a disc shape, and the crushing plate installed in the other rotating rotor may have a structure in which a plurality of wings extending in a radial direction are disposed at an angle along the circumferential direction. have.

As described above, according to the present embodiment, it is possible to prevent the sticking of coal in the coal shredding process, to crush the bulk coal more reliably, and to improve the quality of the coal briquettes.

In addition, by minimizing the coal adhesion phenomenon it is possible to increase the productivity in a continuous operation.

1 is a schematic view showing a coal briquette manufacturing apparatus having a crusher according to the present embodiment.

2 is a plan sectional view showing a crusher of the coal briquette manufacturing apparatus according to the present embodiment.

3 and 4 are side cross-sectional views showing a crusher of the coal briquette manufacturing apparatus according to the present embodiment.

5 is a schematic diagram illustrating a scraper structure in the crusher of the coal briquette manufacturing apparatus according to the present embodiment.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art can easily understand, the embodiments described below may be modified in various forms without departing from the concept and scope of the present invention. Where possible, the same or similar parts are represented using the same reference numerals in the drawings.

The terminology used below is merely to refer to specific embodiments, and is not intended to limit the present invention. As used herein, the singular forms “a,” “an,” and “the” include plural forms as well, unless the phrases clearly indicate the opposite. As used herein, the term "comprising" embodies a particular characteristic, region, integer, step, operation, element, and / or component, and other specific characteristics, region, integer, step, operation, element, component, and / or group. It does not exclude the presence or addition of.

All terms including technical terms and scientific terms used below have the same meaning as those commonly understood by those skilled in the art. Terms defined in advance are additionally interpreted to have a meaning consistent with the related technical literature and the presently disclosed contents, and are not interpreted in an ideal or very formal sense unless defined.

1 schematically shows an apparatus for manufacturing coal briquettes according to the present embodiment.

The apparatus 100 for manufacturing coal briquettes of FIG. 1 is merely for illustrating the present invention, and the present invention is not limited thereto. Therefore, the structure of the coal briquette manufacturing apparatus 100 may be variously modified.

As shown in FIG. 1, the apparatus for manufacturing coal briquettes 100 includes a mixer 110 for mixing powdered coal and a binder, and a molding machine 120 for compressing a mixture of coal and a binder mixed in the mixer 110 to manufacture briquettes. ), A feed feeder 130 for supplying the mixture to the molding machine (120). The coal briquette manufacturing apparatus 100 may be connected to other components, for example, the mixer 110, at least one kneader 140 for kneading the mixture and a transfer screw for transporting the mixture discharged from the kneader as necessary. Other devices, such as 150, may be further included.

At the upper end of the feed feeder 130, a feeding screw 150 for transferring the mixture discharged from the mixer 110 is disposed, and a feeding feeder 130 between the feeding screw 150 and the upper end of the feeding feeder 130. Crusher 10 for crushing the coal lump contained in the mixture flowing into the) is installed.

The shredder 10 is to crush agglomerated coal or the like more than a predetermined size.

2 to 4 well illustrate the structure of the shredder 10 according to the present embodiment.

In the present embodiment, the shredder 10 is rotatably installed in the housing 12 and the rotary rotors 20 and 21 in which the shredding plates 22 and 23 are installed at intervals along the axial direction, and the rotary rotor 20 and 21, a drive unit for rotating the scraper member 40 installed in the housing 12 and disposed in front of the shredding plates (22, 23) attached to the shredding plates (22, 23) to scrape the mixture. do.

Accordingly, the mixture attached to the crushing plates 22 and 23 of the rotary rotors 20 and 21 is continuously removed by the scraper member 40 to maintain a clean state, so that the lump crushing operation can be continued without interruption of operation. Will be. In the following description, the mixture refers to a viscous coal in which a binder is mixed.

The housing 12 forms an outer shape of the crusher 10, and an opening / closing door 14 for checking an inside thereof is installed at a side surface thereof. The housing 12 is a rectangular tubular structure in which the mixture moves to the inside, the upper and lower ends are connected to the outlet of the transfer screw 150 and the upper inlet of the feed feeder 130, respectively.

Rotating rotors 20 and 21 are rotatably installed in the housing 12 in the horizontal direction. The rotary rotors 20 and 21 are provided with a plurality of shredding plates 22 and 23 at intervals along the axial direction. The shafts of the rotary rotors 20 and 21 are rotatably supported by a bearing block 24 installed in the housing 12. The driving unit 30, the driving wheel 32 is installed on the drive shaft of the drive motor, the driven wheel 34 is installed on the shaft of the rotary rotor 20 and the belt connected to the drive wheel and the driven wheel (36). Therefore, when the driving motor 30 is operated, power is transmitted to the rotary rotor 20 through the driving wheel 32, the belt 36, and the driven wheel 34 to rotate the rotary rotor 20.

In this embodiment, two rotary rotors 20 and 21 are provided and arranged in parallel in the housing 12. In addition, the crushing plates (22, 23) provided in each of the rotary rotors (20, 21) has a structure arranged alternately between the adjacent rotary rotors (20, 21). The staggered structure is a rotation in which neighboring crushing plates (22, 23) installed in the other rotating rotors (20, 21) adjacent to each other between the crushing plates (22, 23) installed in one rotary rotor (20, 21) The structure in which the crushing plates 22 and 23 of the rotors 20 and 21 are alternately arranged.

The crushing plates 22 and 23 are crushed plates 22 and 23 and crushing plates 22 and 23 so that they can be rotated without interference between the crushing plates 22 and 23 and the crushing plates 22 and 23, respectively. It may be formed to a thickness smaller than the gap between). Accordingly, while the two rotary rotors 20 and 21 rotate with each other, the crushing plates 22 and 23 installed in the respective rotating rotors 20 and 21 are separated from each other between the crushing plates 22 and 23 and the crushing plates 22 and 23. By passing through the scraping mixture attached to the neighboring crushing plates (22, 23) it is possible to prevent the mixture from adhering to the crushing plates (22, 23).

One of the two rotary rotors 20 and 21, the rotor 20 is rotated in connection with the drive unit. The remaining rotary rotor 21 is rotated by receiving power from the one side rotary rotor 20. Therefore, the crushing plate (22, 23) installed in the rotary rotor (20, 21) is rotated to crush the mass contained in the mixture. The scraper member 40 is to scrape off the viscous mixture attached to the front of the crushing plate (22, 23) from the crushing plate (22, 23) will be described later.

The two rotary rotors 20 and 21 are different from each other in the rotation direction. That is, as shown in Figure 3, each of the rotary rotors arranged in the left and right on the drawing is rotated in the clockwise and counterclockwise direction respectively. The mixture introduced into the housing 12 is moved downward by passing between the rotary rotors 20 and 21 by two rotating rotors 20 and 21. In this process, the mass contained in the mixture is crushed by the shredding plates 22 and 23 installed and rotated in the two rotary rotors 20 and 21.

In addition, the two neighboring rotary rotors (20, 21) has a structure in which the rotation speed is different from each other. To this end, the two rotary rotors 20 and 21 are provided with a reduction gear unit 50 between the shafts to transfer power between the two rotary rotors 20 and 21, while the relative rotational speeds of the two rotary rotors 20 and 21 are provided. To be different. The difference in the relative rotation speed between the two rotary rotors 20 and 21 can be variously set and is not particularly limited.

The reduction gear unit 50 may be, for example, installed on two shafts of the rotating rotors 20 and 21 to mesh with each other and have a tooth group having different teeth. Therefore, when the rotary rotor 20 connected to the drive unit is rotated, the other rotary rotor 21 connected via the reduction gear unit 50 rotates. At this time, by varying the rotation ratio is transmitted through the reduction gear unit 50, the rotation speed difference appears between the rotary rotor 20 connected from the drive and the rotary rotor 21 connected via the reduction gear unit 50. Thus, the two rotary rotors 20 and 21 rotate at relatively different speeds, respectively. Therefore, when the mixture is attached to the crushing plate (22, 23) installed in one rotation rotor (20, 21), the crushing plate (22, installed in another rotating rotor (20, 21) that rotates at a relatively fast or slow speed 23) scrapes the adhered mixture while passing through the counterpart crushing plates 22 and 23 to prevent the mixture from adhering.

In the present embodiment, each of the shredding plates 22 and 23 installed in the two rotary rotors 20 and 21 may be formed in different forms. As shown in FIG. 3, the crushing plate 23 installed in one rotating rotor 21 forms a disc shape, and the crushing plate 22 provided in the other rotating rotor 20 has a plurality of wings extending radially ( 25) is arranged at an angle along the circumferential direction. The vanes 25 of the shredding plates 22 may be formed at the same position along the axial direction of the rotary rotor, or may be formed at different positions, respectively.

In the above structure, when the two rotary rotors (20, 21) relative rotation, the blade 25 of the other shredding plate 22 passes between the disc-shaped shredding plate 23, The side scrapes the front of the shredding plate 23, so that the mixture can be scraped more reliably.

On the other hand, the viscous mixture adhered to the crushing plates (22, 23) is scraped off by the scraper member 40 in close contact with the front surface of the crushing plates (22, 23) and completely separated from the crushing plates (22, 23) .

As shown in FIG. 4 and FIG. 5, the scraper member 40 extends in the housing 12 along the axial direction of the rotary rotors 20 and 21 so that both ends thereof are fixed to the housing 12. . Two scraper members 40 are provided at positions corresponding to the crushing plates 22 and 23 installed in the respective rotary rotors 20 and 21.

The scraper member 40 extends toward the crushing plates 22 and 23 and the grooves 42 through which the crushing plates 22 and 23 pass at positions corresponding to the crushing plates 22 and 23 of the rotary rotors 20 and 21. Is formed to scrape the coal attached to the crushing plates (22, 23), and the top of the crushing plates (22, 23) of the rotary rotor (20, 21) connected to the lower end of the upper end (41) It extends downward and includes a lower end 44 for guiding the bullet. The lower end 44 of the scraper member 40 is integrally formed with the upper end 41.

The grooves 42 formed in the upper end portion 41 of the scraper member 40 may have a size corresponding to the thickness of the crush plate (22, 23). Thus, as shown in FIG. 4, the upper end portion 41 of the scraper member 40 is inserted between the crushing plates 22 and 23 to be in contact with both front surfaces of the crushing plates 22 and 23. Accordingly, as the crushing plates 22 and 23 rotate relative to the scraper member 40 fixed inside the housing 12, the mixture adhering to the crushing plates 22 and 23 is caught by the scraper member 40. .

In the present embodiment, the upper end portion 41 of the scraper member 40 is inclined to be inclined to face the rotation direction of the rotary rotors 20 and 21. For example, when the rotary rotor 20 rotates counterclockwise as shown in FIG. 5, the upper end portion 41 of the scraper member 40 forms an inclined surface inclined to the left. When the rotary rotor rotates clockwise, the upper end of the scraper member also forms an inclined surface inclined to the right.

As the upper end portion 41 of the scraper member 40 in contact with the crushing plate is inclined to form an inclined surface, the load of the mixture attached to the crushing plate during rotation of the crushing plate is applied to the upper end 41 in the vertical direction. That is, as shown in Figure 5, the mixture attached to the crushing plate 22 is pushed by the upper end 41 of the fixed scraper member 40 to fall off the crushing plate, the upper end 41 is inclined surface As a result, the upper end portion 41 is shaped to apply a force in a direction perpendicular to the upper end portion 41 to the mixture attached to the crushing plate 22. Accordingly, the scraper member 40 can more easily remove the mixture attached to the crushing plate 22. The mixture separated from the crushing plate by the upper end 41 of the scraper member 40 is led to the lower end 44 along the upper end 41 and falls down through the lower end 44.

Hereinafter, the operation of the coal briquette manufacturing apparatus of the present embodiment will be described.

The viscous mixture mixed with the binder and the carbon is introduced into the crusher 10 through the transfer screw. The mixture introduced into the crusher 10 is included in the mixture by crushing plates 22 and 23 installed in the rotary rotors 20 and 21 while passing between two rotary rotors 20 and 21 rotating in opposite directions. Burnt lumps and the like are crushed.

The two rotary rotors 20 and 21 continuously crush the mixture and move it downward. In this process, it is possible to minimize the adhesion of the viscous mixture to the crushing plates 22 and 23 by alternately overlapping and rotating crushing plates 22 and 23. Since the two rotary rotors 20 and 21 rotate at different rotational speeds, the crushing plates 22 and 23 installed in the respective rotary rotors 20 and 21 also rotate at relatively different speeds. Accordingly, the crushing plates 22 and 23 of the other rotating rotors 20 and 21 overlapping the crushing plates 22 and 23 of the one rotating rotor 20 and 21 rotate at a relatively fast or slow speed. The mixture attached to the liver is scraped off.

In addition, the viscous mixture attached to the crushing plates 22 and 23 is scraped and crushed by the scraper member 40 in close contact with the front surface of the crushing plates 22 and 23 during the rotation of the crushing plates 22 and 23. It is separated from the plates 22 and 23. The scraper member 40 has an upper end portion 41 extending between the respective crushing plates (22, 23) installed in the rotary rotors (20, 21) to remove the mixture attached to each of the crushing plates (22, 23) without exception. It becomes possible.

As described above, the shredder 10 has a relative rotational movement of the shredding plates 22 and 23 installed in the two rotary rotors 20 and 21 and a viscous mixture by the scraper member 40. It is possible to prevent the attachment to the crushing, and continue the smooth operation.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the range of.

Claims (8)

1. A mixer for mixing a powdered coal and a binder to prepare a mixture, a feeder connected to the bottom of the mixer to supply the mixture, a molding machine connected to the bottom of the feeder to form a mixture supplied from the feeder, and installed at the top of the feeder A crusher to crush the mixture entering the feed feeder,

   The shredder is a rotatable rotor rotatably installed in the housing and axially spaced apart in the axial direction, a drive unit for rotating the rotary rotor, a mixture installed in the housing and disposed in front of the shredding plate attached to the shredding plate Coal briquette manufacturing apparatus comprising a scraper member for scraping off.
2. The method of claim 1,

   The rotating rotor is provided with at least two and disposed in parallel in the housing, the shredding plate installed in each of the rotating rotors are arranged to cross each other between the adjacent rotating rotors structure.
3. The method of claim 2,

   The neighboring two rotary rotor is a coal briquette manufacturing apparatus of a structure in which the rotational speed is different from each other.
4. The method of claim 3, wherein

   The coal briquette manufacturing apparatus further comprises a reduction gear unit installed between the shafts of two neighboring rotary rotors to change the relative rotational speed of the two rotary rotors.
5. The method of claim 4, wherein

   The neighboring two rotary rotor is a coal briquette manufacturing apparatus having a structure different from each other in the rotation direction.
6. The method according to any one of claims 1 to 5,

   The scraper member extends toward the shredding plate and is formed with a groove through which the shredding plate passes at a position corresponding to the shredding plate of the rotary rotor to scrape the mixture attached to the shredding plate, and is connected to the lower end of the upper end and shredding plate of the rotary rotor. Apparatus for producing coal briquettes, including a lower end extending downwardly to guide the mixture.
7. The method of claim 6,

   The scraper member is a coal briquette manufacturing apparatus of the structure formed in the top end inclined with respect to the rotation direction of the rotary rotor located in the crushing plate.
8. The method of claim 7, wherein

   Among the two neighboring rotary rotors, the crushing plate installed in one rotating rotor forms a disc shape, and the crushing plate installed in the other rotating rotor has a plurality of wings extending radially along the circumferential direction. Manufacturing device.

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