KR20010109973A - Apparatus for charging material to be sintered into sintering machine and method for charging material to be sintered into the sintering machine using the same - Google Patents

Abstract

The present invention relates to a sintered raw material charging device and a charging method using the same. The sintering raw material charging device for charging the blending raw material cut out from the drum cutting machine into the sintering device having a surge hopper for storing the blended raw materials mixed and assembled in a mixer and a drum cutting machine installed under the surge hopper is the blending raw material A separation unit for separating the compounding material by particle size, a transporting unit for transporting the compounding materials of a certain particle size cut out from the separating unit, and the compounding conveyed by the transporting unit A storage hopper for storing the raw materials is provided. In addition, the charging method of the present invention comprises the following steps. Sintering raw material charging method for charging the blended raw material mixed and assembled in the mixer in the sintering step is located on the path that the blended raw material is transferred to the surge hopper isolating the blended raw material by the particle size, the constant cut out in the separation unit Transporting each of the blended raw materials of particle size and stacking each of the transported blended raw materials and loading them into a sintering machine.

Description

Sintering raw material charging device and charging method using the same {APPARATUS FOR CHARGING MATERIAL TO BE SINTERED INTO SINTERING MACHINE AND METHOD FOR CHARGING MATERIAL TO BE SINTERED INTO THE SINTERING MACHINE USING THE SAME}

The present invention relates to a sintered raw material charging device and a charging method using the same, and more specifically, by attaching the raw material charging plate by selecting the top light that was directly loaded in the sintering machine trolley by particle size to charge the fine particle through the charging plate The present invention relates to a sintered raw material charging device and a charging method using the same, which prevents light and enables charging by upper particle size.

In general, sintered ore is manufactured by uniformly mixing iron ore as a main raw material and limestone, serpentine, quicklime, and silica sand and adding coke used as a heat source during sintering to add 6% moisture to uniformly assemble in a cylindrical mixer. . After mixing the homogeneously mixed and assembled blended raw materials into the sintering machine (conveyor belt) and igniting the surface of the sintering raw material for about 2 minutes in the ignition furnace, and sucking the air from the suction duct in the lower part of the sintering machine. Sintering reaction proceeds with a coking raw material by a coke raw material, and a sintered ore is manufactured.

The quality of sintered ore (room temperature strength, reduction differentiation index, hot phase, etc.) and productivity are closely related to the heat history of the sinter bed, and furthermore, the uniformity of the heat history in the sinter bed to improve the quality uniformity and the recovery rate It is necessary to maintain the density distribution in the direction of the sintering machine.

The main factors influencing the thermal history in the layer are the particle size distribution and coke distribution in the sintering direction and the rear layer direction when charging the blended raw materials.

In general, the sintering operation carried out in the sintering plant refers to a series of processes for firing a blended raw material to produce a compacted sintered ore. This sintering operation is mixed with various types of spectroscopy and powdered coke and charged into a sintering machine truck. The surface part is ignited in the ignition furnace, and the heat generated when the coke burns due to downward forced suction melts the blended raw material, which is a fine ore, to be manufactured as a sintered ore.

In the process of sintering and manufacturing, the granulated raw materials loaded into the sintering machine truck are prevented from losing in the lower suction process, improving the breathability during suctioning, and preventing the balance between the balance bar and the sintered cake. The upper light of the appropriate height is loaded in between.

The degree of particle size of the charged light and the degree of loading (vertical segregation) of the blended raw materials that are granulated through the inclined plate are factors that determine breathability and plastic strength in the bed.

Charging plate is very important in inducing segregation of the raw materials of the raw materials. The segregation defects and partial loading defects occur when the adhering light is generated by the moisture of the mixed raw materials, resulting in poor production and quality due to poor plasticity. The segregation management and the degree of charge management of the loading plate are the main points of sinter operation management.

In the conventional sintering charging device, the charging of the upper light is charged at an appropriate height through the cutting hopper in the storage hopper, and the charging of the blended raw material flows down the charging plate, while the thick particles are dropped in advance and are loaded by the particle size from the upper light. This conventional charging device and method has the following problems.

First, in the conventional upper light charging method, the particle size of the upper light is generally 5 to 15 mm in size, and is charged in a form in which fine particles are mixed between the alleles when charging the sintering machine trolley to improve breathability during firing due to a decrease in porosity. It is the cause of inhibiting the original role.

Second, there is a problem that it is difficult to induce uniform particle size segregation due to the generation of adhesion light due to the moisture and adhesion of the compounding material in the loading plate for inducing particle size segregation of the compounding material, and causes uneven charging.

Third, vibration motors and cylinders have been used to prevent and remove the light attached to the mounting plate, but the maintenance of the installation and the temporary drop of the attachment light during operation have been a factor of the operation hunting, which has emerged as an improvement factor.

Fourth, the above problems of the charging of the upper light and the blended raw material will appear as a vertical segregation defect of the charging particle size, and will adversely affect the production and quality, such as poor plasticity due to lack of breathability and plastic unevenness.

The present invention is to solve the above problems, to provide a new sintering raw material charging device and a charging method using the same to give a uniform particle size distribution to improve the productivity by ensuring breathability.

BRIEF DESCRIPTION OF THE DRAWINGS The figure for demonstrating the state which isolates and charges the particulate upper light in the sintering raw material charging apparatus of this invention.

2 is a view for explaining a method for screening particulate upper light in the sintering raw material charging device of the present invention;

3 is a view for explaining a state in which the selected fine particles of the top light is charged to the sintering machine through the compound material loading plate.

4 is a view showing the state of the top light and the compounding material loaded on the sintering machine balance in the case of the conventional and the present invention, respectively;

5 is a view for explaining an attachment state of a charging plate;

6 is a view showing the sintering productivity and the fraction in the case of the conventional and the present invention, respectively.

* Detailed description of the main parts of the drawing

10: upper light hopper

11: Blended raw material hopper

20: Particulate upper light extraction part

30: transport department

40: cutout

40a: relay hopper

40b: Cutting belt

According to a feature of the present invention for achieving the above object, a blending raw material cut out from the drum cutting machine having a surge hopper for storing the blended raw material mixed and assembled in the mixer and a drum cutting machine installed under the surge hopper The sintering raw material charging device for charging the sintering device is a separation unit for separating the compounding material by particle size, which is placed on the path where the compounding material is transferred to the surge hopper, and conveys the compounding material having a predetermined particle size cut out from the separation unit. And a storage hopper for storing the blended materials conveyed by the transport unit. In addition, the charging method of the present invention comprises the following steps. Sintering raw material charging method for charging the blended raw material mixed and assembled in the mixer in the sintering step is located on the path that the blended raw material is transferred to the surge hopper isolating the blended raw material by the particle size, the constant cut out in the separation unit Transporting each of the blended raw materials of particle size and stacking each of the transported blended raw materials and loading them into a sintering machine.

According to the present invention as described above, the following effects can be obtained.

First, in the conventional top light charging method, the particle size of the top light is generally 5 to 15 mm in size, and the particles are charged in the form of mixed fine particles between the alleles when charged into the sintering machine bogie, but the present invention is a factor of lowering breathability. By separating and charging the following fine particle upper light, it is easy to load the upper light by particle size, which is advantageous to increase the air permeability.

Second, it is difficult to induce uniform particle size segregation and uneven charging due to the generation of adhesion light due to moisture and adhesion of the compounding material in the loading plate for inducing particle size segregation of the compound material. Since it is withdrawn and granulated to the compounding material drop point through the compounding material loading plate, there is an effect of preventing the occurrence of adherent light and advantageously leading to the particle size segregation at the time of charging the compounding material.

Third, by solving the problem of vertical segregation failure of the charging particle size of the charging of the upper light and the blended raw material, there is a practical effect to increase the sintering productivity as well as to secure the appropriate quality.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 6.

In the present invention, the upper light is stored in the upper light storage hop 10 of the sintered charging portion of the 5 to 15mm particles selected by the characteristic screen as a transport belt, and then the height of the charged upper light by adjusting the height of the lower cutting chute 10a. It is used while adjusting.

In addition, the compounding material 11c is a picture stored in the charging hopper 11 and deposited on top of the upper light through the charging plate 11b inclined by the cutting of the drum feeder 11a, as shown in FIG. The present invention transports the lead portion for sorting the fine top light 20c and the sorted fine top light to the storage relay hopper 40a on the top of the loading plate so as to enter the top light into the charging hopper into the charging plate. It consists of a transport part for carrying out, and a cutout part for granulating through the compound material loading plate 11d.

As shown in FIG. 2, the lead portion for screening particulate upper light is installed at the lower end of the mouth chute 10b having a height of about 6 m between the upper light storage hopper 10 and the upper transport belt. Slit bars 20b for making chute 20a and screening fine particles of light on top of the extraction chute are mounted in the horizontal direction in the same inclined angle as the bath chute, and five are mounted. It is a gradually narrowing, tapered configuration, which allows the selection of the top light and the particle size of the granules to be changed by changing the spacing of the slits. When supported by the block, the withdrawal portion is configured as freely rotating to prevent uneven wear of the slit bar.

The configuration of the transport section is composed of a cutting feeder 30a for transporting the particulated top light drawn out to the charging relay hopper 40a as shown in FIGS. 2 and 3, and a transport belt 30b of about 7 m. .

The cutting feeder adjusts the cutting amount according to the level value 40f of the relay hopper to be started and stopped, and an adjustment damper 20d is installed at the lower end of the sorting chute 20a to prevent trouble due to overloading on the feeder. The height is adjusted as a handle.

Further, as shown in FIG. 3, the extraction part is configured as a cutting belt 40b and a relay hopper 40a, and the cutting belt is configured to adjust the cutting amount to the belt speed, and the length of the belt in the width direction of the charging plate ( 11d) It is configured to be controlled by the start stop signal of the blending material dream feeder 11a which is the same as the widthwise length.

On the other hand, the relay hopper for storing the particulate upper light is a level measuring type by the load cell 40f for adjusting the amount of cut-off which is generated according to the change of the amount of light generated by selection, and the sliding chute 40e for adjusting the square chute and the amount of cutout at the bottom. It is configured to include).

Hereinafter, the method of charging the upper light will be described in detail.

After the sintered ore is manufactured and screened from the feature screen, the top light having a size of 5 to 15 mm is transported to the sintering charging unit and then granulated into the storage hopper 10 shown in FIG.

In this process, when the upper light passes through the tank chute, it passes through the sorting chute 20a of the lower part of the chute shown in FIG. 2 and between five slits bars 20b formed at the top of the sorting chute shown in FIG. As it goes through, a size of less than 10mm falls down through the sorting chute.

At this time, the arrangement interval of the slits bar is determined by the inclination angle of the fitting chute, the length of the fitting, the particle size and the amount of light in the top of the light source. As it is installed in a tapered structure that becomes smaller, only fine particles are selected.

Over 10mm allele upper light over the screening chute (20a) is stored in the existing storage hopper 10 and then half the height after the existing charging layer and proceeds to be spread on the sintering machine trolley (13).

On the other hand, as long as the selected fine particle top light 20c is loaded on the feed-out feeder 30a and the charging relay hopper 40a level is not maximized, the cut-off feeder and the transport belt 30b are continuously activated and generated. Light is incorporated into the relay relay hopper.

That is, only the total amount of the selected top light can be used to make segregation by particle size of the top light desired by the present invention, and the generated fine top light uses continuous level measurement by the load cell 40f of the relay hopper. It is digested by adjusting the amount of use by adjusting the speed of the charging belt 40b.

As shown in FIG. 3, the fine particles of the upper light fall due to the extraction belt and the maneuver on the compounding material loading plate, where the setting of the drop point 40c is very important, and the 50mm upper part of the portion where the compounding material falls on the loading material is tested. As a result, it becomes a point of suppressing adhesion light generation, and the upper light once dropped to the charging plate is rolled down along the inclined loading plate while preventing the attachment light of the compounding material drop designation, and mixed with the compounding material at the difference in particle size and specific gravity, It is charged to the upper part of the opposing upper light which is loaded on the sintering machine bogie through the extraction step 20c to the compound material conflict, and the overall charging surface structure is 10 mm or more from the lowermost part before the invention as compared to FIG. , 10 mm or less of the fine grain top light layer, and the structure shown in the form of a mixture of the fine grain top light and the mixed raw material. That is, a small-sized raw material (D), a medium-sized raw material (C), a large-sized raw material (B) and an upper light (A) are stacked in this order. Laminated in mixed form. In contrast, after the invention, the mixture (E) of the raw material and the upper light, the upper light F of the fine particles, and the upper light G of the opposing light are sequentially stacked. The mixed raw material (semi-light-oriented) layer of the opposition, the mixed raw material layer of the intermediate particles and the finely divided raw material layer form a vertical segregation in sequence, and the raw materials loaded in this way are uniformly fired during the firing process by downward suction. In addition, the firing speed is increased, thereby increasing productivity as well as quality.

Comparing the conventional sintered charge layer and the sintered charge layer of the present invention, the charge of the conventional upper light is mixed with the upper light of 5 to 15mm size and is loaded on the lower layer of the sintering machine bogie, so that the upper part of the fine particles between the sintering grate Greatbar interval The problem of the loss of light and the small particles are mixed between the alleles and alleles resulting in the reduction of the ventilation hole, but the present invention has no loss of fine particles of the upper part by inserting alleles more than 10mm in the bottom layer, and secures the ventilation holes compared to the existing method The easier it is to increase the firing rate.

As shown in Figure 7, it can be seen that the productivity and the recovery rate are also significantly improved compared with the prior art.

According to the present invention as described above, the following effects can be obtained.

First, in the conventional top light charging method, the particle size of the top light is generally 5 to 15 mm in size, and the particles are charged in the form of mixed fine particles between the alleles when charged into the sintering machine bogie, but the present invention is a factor of lowering breathability. By separating and charging the following fine particle upper light, it is easy to load the upper light by particle size, which is advantageous to increase the air permeability.

Second, it is difficult to induce uniform particle size segregation and uneven charging due to the generation of adhesion light due to moisture and adhesion of the compounding material in the loading plate for inducing particle size segregation of the compound material. Since it is withdrawn and granulated to the compounding material drop point through the compounding material loading plate, there is an effect of preventing the occurrence of adherent light and advantageously leading to the particle size segregation at the time of charging the compounding material.

Third, by solving the problem of vertical segregation failure of the charging particle size of the charging of the upper light and the blended raw material, there is a practical effect to increase the sintering productivity as well as to secure the appropriate quality.

Claims (4)

In the sintering raw material charging device for charging the blending raw material cut out from the drum crusher with a surge hopper for storing the blended raw material mixed and assembled in a mixer and a drum cutter installed under the surge hopper: A separation unit located on a path through which the blended raw material is transferred to a surge hopper to separate the blended raw material by particle size; A transport unit for transporting the compounding materials of a predetermined particle size cut out from the separation unit; And a storage hopper for storing the blended ingredients conveyed by the transport unit. The method of claim 1, The blended raw material separation unit is composed of a plurality of slitting bars, the slitting bar charging apparatus characterized in that the gap becomes narrower toward the bottom. The method of claim 1, The storage hopper is provided with a load cell, the sintering raw material charging apparatus, characterized in that for controlling the speed of the transport unit by the charging amount. In the sintering raw material charging method for charging the blending raw material mixed and assembled in the mixer to the sintering machine: Separating the compounding material by particle size by placing the compounding material on a path through which the compounding material is transferred to a surge hopper; Transporting each of the compounding materials of a predetermined particle size cut out from the separation unit; And Stacking each of the blended raw materials transferred to a sintering material charging method comprising the step of charging.