KR20160036148A - Apparatus for manufacturing sintered ore and method for manufacturing sintered ore using the same - Google Patents

Abstract

The present invention relates to an apparatus to manufacture sintered ore and a method to manufacture sintered ore using the same. The apparatus comprises: a moving path; a plurality of sintering trucks which moves along the moving path, and raw materials charged therein; a raw material supplying part disposed in the moving path, charging raw materials on a plurality of sintering trucks; and an ignition furnace disposed on a side of the raw material supplying part on an upper part of the moving path, injecting a flare to the raw material layer in the sintering trucks. In at least a part of the moving path, vibration generating sections are disposed to generate a vibration in the sintering trucks. The degree of coupling can be increased when melting sintered raw material through a densification of sintered raw material; and the recollection rate of sintered ore can be increased by reducing a quantity of return sinter fines as uniform ventilation can be supplied in the entire area of the raw material layer.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing sintered ores and a method for manufacturing sintered ores using the same,

More particularly, the present invention relates to an apparatus for manufacturing sintered ores and a method for manufacturing sintered ores using the same, which can improve the yield of sintered ores during the sintering process.

In general, the process of sintering is to mix minerals, additives and fuels (partial coke, anthracite) into a drum mixer, mix and humidity, mix the raw materials for sintering, and charge the sintering bogies to a certain height. Then, after the surface is ignited by the ignition furnace, firing of the sintering material is proceeded while forced air is sucked from below, and sintered ores are produced. Thereafter, the sintered ores that have been sintered are cooled in a cooler through a crusher of the light-splitting portion, and the sintered ores having a particle size of 6 to 50 mm, which is easy to charge and react in the blast furnace, are transferred to the blast furnace, The sintered spectra are classified as semi-luminous and used again as raw materials for sintering.

In this case, the generation amount of the semi-light determines the sintering recovery rate, and the sintering recovery rate is influenced by various factors such as the amount of heat supplied, the amount of the combined slag, the strength of the sintered ore and the porosity. Among them, The air permeability and denseness of the raw material layer greatly affect the recovery rate of the sintered ores.

That is, after the raw material layer is ignited, it is heated and melted by the suction of air to produce a light distribution. The sintered raw material charged into the sintering vehicle by natural fall forms irregular flatness and forms a raw material layer. Therefore, it is difficult to uniformly flow the raw material layer due to the irregular space between the raw materials for sintering, and there arises a problem that the raw materials for sinter can not be heated uniformly.

In addition, a space between the raw materials for sintering is generated by sintering raw materials having different particle sizes, which reduces the density of the raw material layer. When the sintered ores are thus produced, an irregular space is generated between the raw material layers in accordance with the change of the flatness of the sintered ores when the sintered ores are cooled, and the raw material layer is broken. Such a problem reduces the recovery rate of the sintered ore size (6 to 50 mm) as described above, and increases the formation of the semitransparency.

Conventionally, a method has been used in which the surface layer portion of the raw material for sinter is press-fitted by using a push-down roll provided at the rear stage by ignition after ignition by ignition of the sintering device to suppress the surface layer tilting, thereby reducing the generation amount of sintering semi-light.

However, when the flatness of the surface layer portion of the raw material passed through the ignition furnace is not uniform, there is a problem that the raw material which is not pressed down by the roll-down roll exists, and the uniform thickness reduction of the surface layer portion is not performed.

Further, due to the method in which the surface layer portion is pressed down while the rolling roll is in continuous contact with the surface layer portion, abrasion of the pressure roll is caused by the friction between the pressing roll and the raw material, and by the high temperature of the raw material for sinter, It is required to replace the pressing roll. Therefore, it takes time and expense due to the maintenance of the pressing roll, resulting in a delay in the process, which leads to a problem that the productivity of the process is reduced.

KR 2012-0020355 A1

The present invention provides an apparatus for producing sintered ores and a method for producing sintered ores using the same, which can densify the raw material layer and uniformly reduce the surface layer portion of the raw material layer.

The present invention provides an apparatus for producing sintered ores and a method for producing sintered ores using the same, wherein the raw material layer can be uniformly melted by improving the air permeability of the raw material layer in the sintered bed.

The present invention provides an apparatus for manufacturing sintered ores and a method for manufacturing sintered ores using the same, which can increase the productivity and efficiency of the sintered light production process by reducing the amount of generated sintered semi-shed.

An apparatus for producing sintered ores according to an embodiment of the present invention includes a moving path; A plurality of sintering carts movable along the movement path and loaded with a raw material therein; A raw material supply unit provided on the movement path and charging the raw materials into the plurality of sintering vehicles; And an ignition means provided at one side of the raw material supply portion above the movement path for injecting a flame into the raw material layer in the sintered bogie, wherein at least a part of the movement path includes a vibration generating section for generating vibration in the sintered bogie Is provided.

The movement path may be formed of a rail, and the rail may be intermittently provided in the vibration generating section.

The movement path may be formed by a rail, and a plurality of grooves may be formed on the surface of the rail in the vibration generating section in a direction crossing the moving direction of the sintered bogie.

The moving path may be formed by a rail, and a plurality of rolls may be provided in the vibration generating section.

The vibration generating section may be provided between the raw material supplying section and the ignition.

A method for producing an sintered ores according to an embodiment of the present invention is a method for producing sintered ores, comprising the steps of: preparing a raw material for sinter; Charging the sintering raw material into a moving sintering vehicle to form a raw material layer; And densifying the raw material layer by vibrating while moving the sintered bogie; And a step of igniting the raw material layer.

The densification of the raw material layer may be performed between the process of forming the raw material layer and the process of igniting the raw material layer.

A vibration generating section is formed in at least a part of a moving path through which the sintered bogie moves in the process of densifying the raw material layer so that a vibration generated in the process of moving the sintered bogie along the vibration generating section is transmitted to the inside of the sintered bogie And indirectly transferred to the raw material layer, the raw material layer can be densified.

The sintered bogie can be moved along the upper portions of the plurality of rails provided intermittently in the course of moving the sintered bogie along the vibration generating section.

The size of the vibration generated in the sintered bogie or the number of vibrations can be controlled by adjusting the interval between the lanes or the number of the rails.

The sintered bogie can be moved along the upper portion of the rail in which grooves are formed in a direction intersecting with the moving direction of the sintered bogie during the movement of the sintered bogie along the vibration generating section.

The size or the number of vibrations generated in the sintered bogie can be controlled by adjusting the interval or the number of the grooves.

The sintered bogie can be moved along the upper portions of the plurality of rolls continuously disposed in the process of moving the sintered bogie along the vibration generating section.

The size or vibration of the sintered bogie can be controlled by adjusting the interval or the number of rolls.

According to the sintering apparatus for producing sintered ores according to the embodiment of the present invention and the method for producing sintered ores by using the sintering apparatus, vibrations are applied to the raw material layer charged in the sintering bogie to increase the density of the raw material layer, have. Further, uniform air permeability can be imparted to the entire region of the raw material layer, so that the amount of generated sintering halftone can be reduced.

In the process of moving the sintered bogie, vibration is applied to the sintered bogie so that the raw material layer charged into the sintered bogie can be naturally lowered to suppress or prevent lifting of the surface layer of the raw material layer.

Thus, the raw material layer can be densified and the surface layer portion of the raw material layer can be pressed down, thereby reducing the amount of semi-light generated due to lifting of the surface layer portion, and the recovery rate of the sintered ores transferred to the blast furnace can be increased.

Further, by using a method of intermittently contacting the raw material for sintering to vibrate or depress the raw material layer, the number of times of maintenance by continuous friction with the raw material for sintering can be shortened.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view of an apparatus for producing sintered ores according to an embodiment of the present invention; FIG.
Fig. 2 is an enlarged view of section A of Fig. 1; Fig.
3 is a diagram specifically showing the essential structure of an apparatus for producing sinter ores according to an embodiment of the present invention.
4 is a diagram specifically showing the essential structure of an apparatus for producing sintered ores according to a modified example of the present invention.
5 is a view showing a state in which vibration is generated in a sintered bogie using an apparatus for producing sintered ores 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. It will be apparent to those skilled in the art that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to let you know. Wherein like reference numerals refer to like elements throughout.

FIG. 1 is a view showing an apparatus for producing sintered ores according to an embodiment of the present invention, FIG. 2 is an enlarged view of section A of FIG. 1, and FIG. 3 is a cross- And FIG. 4 is a diagram specifically showing a main structure of an apparatus for producing sintered ores according to a modified example of the present invention.

1, the sinter orbital production facility includes a movement path 55 forming a closed loop, a sintering bogie 50 moving in an endless track manner along the movement path 55, A raw material supply part for charging the raw material for sinter into the sintered bogie 50 to be disposed and moved; an ignition furnace 30 for injecting a flame into the surface layer of the raw material in the sintered bogie 50 to fire the inside of the sintered bogie 50; And includes a plurality of wind boxes (70).

First, the raw material supply section supplies the raw material for sinter used as a raw material of the sintered ores in the sintering vehicle 50. The raw material supply unit is installed in the upper light hopper 10 where the upper light stored in the bottom of the sintering bogie 50 is stored, and the upper raw material is mixed after the iron ore raw material and the coke used as the solid fuel are mixed and the assembled raw material is stored A surge hopper 20 and a charging device for charging the blending raw material discharged from the surge hopper 20 into the sintering bogie 50. Here, the sintering raw material means the upper light and the blending raw material.

The upper light hopper 10 is provided at an upper portion of one side of the upper side movement path 55 of the sintered bogie 50. In order to prevent the material of the grate blanket formed at the bottom of the sintered bogie 50 from flowing out, . The upper light means that sintered ores having a particle size of about 8 to 15 mm are selected from among the sintered ores.

The surge hopper 20 is provided in front of the upper light hopper 10, that is, the movement path 55 of the sintering bogie 50, and stores the raw material for producing the sintered ores. A charging device is connected to the surge hopper (20) to charge the blended raw material discharged from the surge hopper (20) into the sintering carriage (50). In the loading step, the compounding material is uniformly charged in the width direction of the sintering carriage 50 without segregation and segregation, and the particles are segregated so that the particle size gradually decreases from the bottom to the top in the depth direction of the sintering vehicle 50. The loading is performed by a drum feeder 21 for loading a sour material to be squeezed into the sintering truck 50 so as to be vertically and horizontally segregated and mainly mixing the sour material discharged from the sourcing hopper 20, And a chute 22. The charging chute 22 may be formed in a plate shape having an inclined surface or may be formed of a plurality of rolls arranged in parallel. The charging chute 22 may form a linear transport path or may form a curved transport path and in the latter case may form a transport path in the form of a cycloid curve that facilitates vertical segregation of the material mixture .

The structure of such a raw material supply unit is a known technology, and a detailed description thereof will be omitted.

The ignition furnace 30 is provided above the movement path 55 of the sintering bogie 50 and is provided in front of one side of the raw material supplying portion such as the moving direction of the sintering bogie 50, The surface of the charged raw material is sprayed with a flame to ignite. When the inside of the sintered bogie 50 is sucked by the plurality of wind boxes 70 in the process of moving the saddle bogie 50 along the movement path 55, air is supplied from the outside to the saddle bogie 50 The raw material in the sintering bogie 50 is burned.

The movement path 55 forms a closed loop such that the sintered bogie 50 rotates in an endless track manner, the upper side movement path 55 is a section in which the sintered ores are manufactured, and the lower side movement path 55 is a section And a blank sintered bogie 50 from which the sintered ores are glazed is moved to the upper side movement path 55 for manufacturing sintered ores.

A wind box 70 is provided at a lower portion of the upper side movement path 55. The wind box 70 is provided at the upper part of the upper side movement path 55, So that the inside of the sintered bogie 50 moving along the upper side moving path 55 is sucked. The raw material supply portion is provided on one side of the upper side movement path 55, that is, on the side where the direction is changed from the lower side movement path 55 to the upper side movement path 55, and one side of the raw material supply portion, And an ignition furnace 30 is provided in front of the moving direction.

In the upper side movement path 55, after the ignition furnace 30, the sintered bogie 50 charged with the raw material is moved while the inside is sucked by the wind box 70 to sinter the raw material, Is formed. In the portion of the other side of the upper side movement path 55, where the cooling section is ended and the direction is changed to the lower side movement path 55, a light distribution portion for distributing the sintered light in the sintering carriage 50 is formed.

In addition, the movement path 55 through which the sintered bogie 50 moves may be formed by rails provided in parallel with each other. In the present invention, a vibration generating section A for generating vibration in the sintered bogie 50 is formed in a part of the movement path 55, and the vibration generating section A is generated in the saddle bogie 50 during the movement of the saddle bogie 50 So that the raw material layer charged in the sintered bogie 50 can be pressed and densified. The vibration generating section A may be provided between the raw material supplying section and the ignition way 30 and vibrates in the process of moving the sintering bogie 50 along the vibration generating section A, So that the raw material layer can be densely naturally damped.

3, the movement path 55 includes a main rail 55b forming a path through which the sintered bogie 50 moves and an auxiliary rail 55a forming a part of the main rail 55b . Here, the main rail 55b forms the upper side movement path and the lower side movement path, and the auxiliary rail 55a forms the vibration generation section A for densifying the raw material layer in the sintered bogie 50. The vibration generating section A may be formed by disposing the auxiliary rails 55a intermittently. That is, in the vibration generating period A, the plurality of auxiliary rails 55a are continuously arranged in series, and the plurality of auxiliary rails 55a are disposed apart from each other, so that the space between the auxiliary rails 55a, . When the sintered bogie 50 moves along the vibration generating section A, the concave and convex structure swings up and down due to the concavo-convex structure formed in the vibration generating section A, . The vibration generated in the sintered bogie (50) is transmitted to the raw material layer loaded in the sintered bogie (50), and the raw material layer is pressed and densified.

In this manner, the magnitude of the vibration generated in the sintered bogie 50 can be adjusted by adjusting the size of the interval between the auxiliary rails 55a in the vibration generating period A '. For example, when the distance between the auxiliary rails 55a is increased, the magnitude of vibration generated in the sintering truck 50 can be increased.

In addition, a plurality of auxiliary rails 55a may be arranged regularly or irregularly. In the former case, a certain size of vibration is generated in the sintered bogie 50 while the sintered bogie 50 moves in the vibration generating period A, and in the latter case, vibrations of irregular size occur in the saddle bogie 50 That is, the magnitude of vibration.

In the case of increasing the number of the auxiliary rails 55a in the vibration generating period A, the number of intervals between the auxiliary rails 55a increases, so that the number of vibrations generated in the sintering vehicle 50 may increase.

Although not shown, grooves may be formed in the rail 55 formed in the vibration generating section A in a direction intersecting with the moving direction of the sintered bogie 50, for example, orthogonal to the moving direction of the saddle truck 50 to form a concavo-convex structure . That is, as in the above-described embodiment, it is possible to form the concavo-convex structure by forming grooves on the surface of the rail provided in the vibration generating section A without separately providing the main rail 55b and the auxiliary rail 55a . In this case, the number of grooves formed in the vibration generating section A and the size (width or length) of the grooves can be adjusted to adjust the number of times of recovery or size of the vibration generated in the sintering vehicle 50. In this case as well, the grooves may be formed regularly or irregularly to cause the sintered bogie 50 to generate a constant vibration or to generate irregular vibration.

Referring to FIG. 4, the vibration generating section A may be formed by continuously providing a plurality of rolls 55c. The movement path 55 of the sintering bogie 50 may be formed by the main rail 55b and a plurality of rolls 55c may be provided in a part of the movement path 55 of the sintering bogie 50, ) Can be formed. The plurality of rolls 55c may be provided in series along the movement direction of the sintering carriage 50 and the interval between the rolls 55c is preferably formed to be smaller than the diameter of the wheel 52 of the sintering carriage 50 . This is to prevent the wheel 52 from falling between the rolls in the process of moving the sintering bogie 50.

The sintering bogie 50 moves up and down along the topology formed by the roll 55c in the process of moving along the vibration generating section A so that the sintering bogie 50 is rocked in the vertical direction. Vibration is generated in the sintered bogie (50) by such rocking motion, and vibration can be transmitted to the raw material layer loaded in the sintered bogie (50) to be densified.

The magnitude and the number of vibrations generated in the sintering bogie 50 can be adjusted by adjusting the intervals and the number of rolls 55c. For example, when the interval between the rolls 55c is increased, the vertical movement distance of the sintering bogie 50 is increased and the vertical movement distance is increased, so that the magnitude of the vibration generated in the sintering bogie 50 can be increased. In addition, when the number of rolls 55c is increased, the number of oscillations to be issued to the sintering carriage 50 increases. Therefore, the degree of densification of the raw material layer in the sintered bogie 50 can be controlled by adjusting the interval or the number of rolls 55c.

It is needless to say that the vibration generating section A may be formed in various forms capable of causing oscillation in the sintering bogie 50.

With this configuration, in the vibration generating section A, the surface layer of the raw material layer of the sintered bogie 50 can be squeezed or the raw material layer can be densified to suppress the phenomenon of surface layer tensions and cracks due to the amount of air generated upon ignition, The mixing raw material can be assembled into a large lump when the blending raw material is melted.

Hereinafter, a method of manufacturing sintered ores by using the sintering apparatus according to an embodiment of the present invention will be described.

5 is a view showing a state in which vibration is generated in the sintered bogie 50 by using the sinter orbital manufacturing equipment according to the embodiment of the present invention.

The method for producing sintered ores according to an embodiment of the present invention includes the steps of preparing a raw material, filling a raw material mixture into a sintering vehicle 50 to form a raw material layer, and densifying the raw material layer by vibrating the sintering vehicle 50, And a process of igniting the surface layer of the raw material layer.

First, an upper light is provided and supplied to an upper light hopper, and a raw material containing iron ore and a solid raw material is prepared and supplied to a surge hopper 20 to prepare a raw material for producing sintered light.

Thereafter, a plurality of sintering carts 50 are sequentially passed to the lower side of the upper light hopper 10 and the surge hopper 20, and the upper light and the compounding material are charged into each of the plurality of sintering carts 50 by using the slotting machine, Layer. A plurality of sintering bogies 50 are sequentially passed through the lower side of the ignition furnace 30, and a flame is ignited on the surface layer of the raw material layer, and each sintering bogie 50 moves to the light distribution portion through the sintering section. In the process of moving the sintering bogie 50 through the sintering section, the solid fuel in the raw material layer is burned by the suction force of the wind box 70 in the sintering section to produce sintered light. At this time, the flame of the surface layer moves to the lower side of the sintering carriage 50 by the suction force of the wind box 70, and the solid fuel in the raw material layer is burned.

At this time, the sintered bogie 50 passes through the vibration generating section A between the raw material supplying section, for example, the surge hopper 20 and the ignition furnace 30, and the raw material layer in the sintered bogie 50 passes through the sintering bogie 50, As shown in FIG.

A process of moving one sintered bogie 50a among a plurality of sintered bogies 50 will be described below.

The raw material layer in the sintered bogie 50a has low density in the raw material layer as shown in FIG. 5 a) at the initial stage of supplying the raw material at the raw material supplying portion.

Thereafter, due to the concavo-convex structure due to the interval (or groove) of the rails 55a constituting the vibration generating section A in the process of moving the sintered bogie 50a to the ignition passages 30 through the vibration generating section A, The truck 50a is oscillated and the oscillation of the sintering truck 50a occurs. The vibration generated in the sintering carriage 50a is transferred to the raw material layer in the sintering carriage 50a to densify the raw material layer in the sintering carriage 50a as shown in FIG. 5B). Therefore, the raw material layer can be easily densified in the course of moving the sintering drum 50 without any physical equipment such as direct pressure to the raw material layer.

5 (c), a flame is sprayed onto the surface layer of the densified raw material layer in the ignition furnace 30 and ignited, and the sintered bogie 50 is moved along the sintering zone to produce sintered ores.

If the densification of the raw material layer in the sintered bogie 50 is improved as described above, it is possible to suppress deterioration of bonding due to lifting of the surface layer of the raw material layer and to provide uniform air permeability throughout the raw material layer, Thereby improving the sintered rare-earth recovery rate.

Although the present invention has been described with reference to the accompanying drawings and the preferred embodiments described above, the present invention is not limited thereto but is limited by the following claims. Accordingly, those skilled in the art will appreciate that various modifications and changes may be made thereto without departing from the spirit of the following claims.

10: upper light hopper 20: surge hopper
30: Ignition 50: Sintered vehicle
55: movement path 70: wind box

Claims (14)

A movement path;
A plurality of sintering carts movable along the movement path and loaded with a raw material therein;
A raw material supply unit provided on the movement path and charging the raw materials into the plurality of sintering vehicles; And
And an ignition means provided at one side of the raw material supply portion above the movement path for injecting a flame into the raw material layer in the sintered bogie,
Wherein at least a part of the movement path is provided with a vibration generating section for generating vibration in the sintering bogie. The method according to claim 1,
Wherein the movement path is formed by a rail,
Wherein the rail is intermittently provided in the vibration generating section. The method according to claim 1,
Wherein the movement path is formed by a rail,
Wherein a plurality of grooves are formed on a surface of the rail in a direction crossing the moving direction of the sintered bogie during the vibration generating period. The method according to claim 1,
Wherein the movement path is formed by a rail,
Wherein a plurality of rolls are provided in the vibration generating section. The method according to any one of claims 1 to 4,
Wherein the vibration generating section is provided between the raw material supplying section and the ignition. A method for producing an sintered ore,
Preparing a raw material for sinter;
Charging the sintering raw material into a moving sintering vehicle to form a raw material layer;
And densifying the raw material layer by vibrating while moving the sintered bogie; And
And igniting the raw material layer. The method of claim 6,
Wherein the densification of the raw material layer is performed between a process of forming the raw material layer and a process of igniting the raw material layer. The method according to claim 6 or 7,
In the process of densifying the raw material layer,
A vibration generating section is formed in at least a part of a moving path through which the sintered bogie moves and a vibration generated in a process of moving the sintered bogie along the vibration generating section is indirectly transmitted to a raw material layer in the sintered bogie, Wherein the layer is densified. The method of claim 8,
And moving the sintered bogie along an upper portion of a plurality of rails provided intermittently in a process of moving the sintered bogie along the vibration generating period. The method of claim 6,
And adjusting the size of the vibration or the number of vibrations generated in the sintered bogie by adjusting the interval between the lanes or the number of the rails. The method of claim 8,
And moving the sintered bogie along an upper portion of a rail in which grooves are formed in a direction intersecting with a moving direction of the sintered bogie during movement of the sintered bogie along the vibration generating section. The method of claim 11,
And adjusting the interval or the number of the grooves to adjust the magnitude of vibration or the number of vibrations generated in the sintered bogie. The method of claim 8,
And moving the sintered bogie along upper portions of a plurality of rolls continuously disposed in the process of moving the sintered bogie along the vibration generating section. 14. The method of claim 13,
And adjusting the interval or the number of the rolls to adjust the magnitude of vibration or the number of vibrations generated in the sintered bogie.

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