KR20030020480A - Apparatus for providing the sinter mix for the sintered ore - Google Patents

Abstract

PURPOSE: An apparatus for charging blended raw materials for sintered ore is provided to prevent formation of adhesion ore by installing scraper attached slit-bars and improve productivity and quality of sintered ore by discharging blended raw material having smaller grains in the blended raw materials through a gap between the slit bars. CONSTITUTION: In an apparatus for charging blended raw materials for sintered ore comprising a slit-bar assembly comprising a deflector plate that is installed at the lower part of the drum feeder in a certain inclined angle to charge into a sintering car blended raw materials discharged in a certain quantity from a surge hopper(5) by a drum feeder(6), and a plural slit-bars(33a) installed on the lower part of the deflector plate, the apparatus is characterized in that the deflector plate comprises a plural plate members(31,32) that are continuously installed from the lower part of the drum feeder to the slit-bars, and the plate members are adjusted to different angles respectively, wherein rod shaped structures having a plural rod shaped members(41a,42a) are installed at the respective plate members, and wherein the plural rod shaped members are capable of being reciprocated along a traversing direction thereof.

Description

Compound material charging device for sintered ore {Apparatus for providing the sinter mix for the sintered ore}

The present invention relates to a charging device for charging a blended raw material into a sintered bogie in a DL type sintering operation, which is a downward suction type compaction process, and more particularly, a blended raw material layer for firing a blended raw material containing iron ore raw materials into a sintered ore. The lower layer is composed of a relatively large particle size of the raw material, and the upper part is loaded with a relatively small particle size of the raw material to vertically segregate the particle size distribution of the raw material, but the particle size distribution of the raw material in the width direction of the sintered truck of about 4M The present invention relates to a blending raw material charging device for sintered ore that can improve the air permeability of the blended raw material layer by maintaining the uniformity without segregation, thereby improving the productivity and operation rate of the sintered ore.

In general, a downward suction DL type sintering operation is performed by quantitatively cutting out spectroscopic iron ore raw materials having a particle size of about 5 mm or less and a coke, which is a heat source, quantitatively cut out from the iron ore reservoir 1 as shown in FIG. Mix with the water added in 2) and assemble the blended raw materials in the granulator (3). Then, the assembled raw material is temporarily stored in the surge hopper (5) and then cut out by a predetermined amount by the drum feeder (6) is charged in the sinter bogie (9).

When the sinter truck 9 passes through the ignition furnace 8, the powdered coke of the blended raw material, which acts as a heat source, is ignited, and at this time, atmospheric air is sucked downward from the surface layer portion of the blended raw material by the suction force sucked by the blower 11. . As a result, the iron ore raw material of the blended raw material is produced as a sintered ore through the sintering process in the molten state while the sintering bogie 9 moves the sintering machine effective image distance, and is transferred to a blast furnace process which is a later process.

Sintered ore used in the blast furnace process about 80% or more is produced from the low-grade iron ore in the mine through the sintering operation as described above, so it is used as a raw material of lower cost than other ores. Therefore, the more the amount of sintered ore used, the more the cost of molten iron is reduced and the blast furnace is stabilized. Therefore, sintered ore is required for high production operation of molten iron.

Therefore, in order to improve the productivity of the sintered ore, it is necessary to improve the operation rate of the sintering equipment and to increase the passage amount of atmospheric air passing through the compounding material layer charged in the sintering bogie. To this end, there is a need for technology development related to a compounding material charging device for inducing segregation of blended raw materials so that the lower layer is composed of opposing blended raw materials and the upper layer is composed of fine blended raw materials.

Referring to FIG. 2, the compounding material stored in the surge hopper 5 is cut out in a predetermined amount by the rotation of the drum feeder 6, and the sintered bogie 9 is inclined along the inclination angle of the deflector plate 7, which is a charging facility. When it falls to the compound material of the antagonist constitutes the lower layer 15 of the compounding material layer, and a plurality of slits-bar 7a is formed in the deflector plate 7 so that the elementary compound material of the small particle constitutes the upper layer 17. It is installed at the bottom of). In addition, each of the slits-bars 7a is designed to be capable of 360-degree axial rotation so that the attachment light 12 formed by attaching the falling compound material can be easily removed.

That is, referring to FIG. 3, when the compounding material falls from the surge hopper and is attached to the upper surface 77 of the slits-bar 7a and the deflector plate 7 to form the adhesion light 12, The dropping operation is interrupted by the attachment light 12. As a result, the charging distribution of the blended raw materials charged into the sintered bogie 9 cannot be formed uniformly along the width direction of the sintered bogie 9 and also uniformly along the height direction of the sintered bogie 9. The air permeability in the blended raw material layer is deteriorated, which lowers the productivity and quality of the sintered ore.

In addition, although the stacking of the blended raw materials is formed differently on the sintered trolley 9 according to the installation angle α of the deflector plate 7, the deflector plate 7 is installed in the slits-bar type charging apparatus manufactured in one-piece unit. When the angle is changed, the slits-bar 7a is also operated at the same time, so there is a limit in changing the angle of the deflector plate 7, so that segregation adjustment of the raw material is impossible.

That is, as described above, the charging distribution of the blended raw material is imbalanced due to the vertical segregation defect and the horizontal segregation of the blended raw material due to the attachment light 12, so that the flame complexed to the powdered coke disappears during the sintering firing process or in the firing process. Deterioration of air permeability lowers productivity of sintered ore, unstable firing leads to deterioration of sintering operation, deterioration of quality of sintered ore and decreases operation rate of sintering machine because the operation of sintering machine must be stopped to remove adhered light. Let's do it.

SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems as described above, and instead of providing a one-stage integrated slits-bar charging device, slits having a deflector plate having a top and a bottom plate and a plurality of slits-bars. By providing a three-stage separate charging device composed of a t-bar assembly, it is possible to adjust the angle of the deflector plate to configure the stacking state of the raw materials in various ways, and also to move left and right on the upper plate and the lower plate. Slit-bar attached to prevent scraping of light by installing a scraper-attached slitter-bar, and discharge the compounding material with small particle size through the slits-bar among the compounding materials falling through the slitter-bar to prevent vertical segregation of the compounding material layer. Provides a raw material charging device for sintered ore that can improve the productivity and quality of the sintered ore by induction Its purpose is to.

1 is a view showing a general sintered ore manufacturing process.

2 is a view showing a state in which the compounding material is charged to the sintering cart through the compounding material charging device according to the conventional embodiment.

3 is a view showing a configuration of a compounding material charging device according to the prior embodiment.

4 is a view showing the configuration of a compounding material charging device according to the present invention.

Figure 5 is a side view showing a compounding material charging device according to the present invention.

Figure 6a is a view showing a state in which the compounding material is charged to the sintered trolley by the compounding material charging apparatus according to the present invention, Figure 6b is a view schematically showing a state of charge of the compounding raw material.

Figure 7 is a view showing a state in which the air injection nozzle is mounted on both sides of the compounding material charging device according to the present invention.

Figure 8 is a photograph showing a cylinder installed to reciprocate the rod-like structure of the compounding material charging apparatus according to the present invention.

<Description of Symbols for Major Parts of Drawings>

31: first plate member

31b: first inclination adjustment device

32: second plate member

32b: second inclination adjustment device

33: Slit-Bar Assembly

33b: third inclination adjustment device

41: first rod-shaped structure

42: second rod-like structure

45, 47: injection nozzle

In order to achieve the above object, according to the present invention, the deflector plate and the deflector plate installed at a predetermined inclination angle at the bottom of the drum feeder in order to charge the compounding material cut out in a predetermined amount by the drum feeder from the surge hopper to the sintered trolley The compound raw material charging device for sintered ore which is installed at the bottom of the slit-bar assembly having a slit-bar assembly having a plurality of slits-bars has the deflector plate continuously at a predetermined inclination angle from the bottom of the drum feeder to the slit-bar assembly. It is composed of a plurality of plate-like member to be installed, characterized in that the plate-like member is adjustable at different angles to each other.

Hereinafter, a preferred embodiment of the present invention will be described with reference to FIGS. 4 to 8, and the conventional configuration will be described with reference to FIGS. 1 to 3.

A charging device for charging the blending raw material cut out in a predetermined amount by the rotation of the drum feeder 6 from the surge hopper 5 into the sintered bogie 9 is provided in the lower part of the drum feeder 6. According to the invention, the charging device is a deflector plate consisting of a first plate-like member 31 and a second plate-like member 32 that are continuously installed at a predetermined inclination angle from the bottom of the drum feeder 6, and the deflector plate of The slits-bar assembly 33 is provided at a lower angle with a plurality of slits-bars 33a.

Behind the first plate member 31 is provided with a first inclination angle adjusting device 31b for adjusting its inclination angle, and behind the second plate member 32 is adjusting a second inclination angle for adjusting its inclination angle. Apparatus 32b is provided. A third tilt angle adjusting device 33b is provided for adjusting the tilt angle of the slit-bar assembly.

According to a preferred embodiment of the present invention, the inclination angle of the first plate member 31 is adjusted in the range of 65 ° to 75 ° by the first inclination angle adjusting device 31b, and the inclination angle of the second plate member 32 is adjusted. The degree is adjusted in the range of 50 to 60 degrees by the second inclination angle adjusting device 32b, and the inclination angle of the slit-bar assembly is in the range of 40 to 50 degrees by the third inclination angle adjusting device 33b. Adjusted. These angles of inclination are adjusted independently of each other.

At this time, the angle of inclination of the first plate member 31 is increased by the dropping speed of the blended raw material cut out from the drum feeder 6, resulting in stagnation of the blended raw material, and the falling speed of the granulated particles and fine particles. In order to make a difference, it is adjusted in the range of 65 ° to 75 °. Dropping of the blended raw material falling from the first plate member 31 by adjusting the inclination angle of the second plate member 32 to a range of 50 to 60 degrees lower than the adjustment range of the inclination angle of the first plate member 31. The speed was reduced to facilitate the separation of granulated and fine particles.

Accordingly, the sintered trolley 9 in a state in which the compounding material divided into alleles and fine particles is separated from the second plate-like member 32 according to its particle size while falling by the high drop energy of the first plate-like member 31. Charge in. At this time, the slit-bar assembly 33 is the part which most influences the segregation degree of the blended raw material, its inclination angle is lower than the inclination angle of the first plate member 31 and the second plate member 32. That is, it should be adjusted in the range of 40˚ ~ 50˚.

Therefore, the angle of inclination of the first plate-like member 31, the second plate-like member 32, and the slit-bar assembly 33 is individually adjusted to maintain the optimum angle of inclination, so that the drum feeder 6 rotates. The blended raw material cut out from the surge hopper 5 in a predetermined amount is favorably laminated on the sintering cart 9. In addition, by stacking the inclination angles of the first plate-like member 31, the second plate-like member 32, and the slit-bar assembly 33 separately, the laminated state of the blended raw materials can be configured differently.

Here, the interval between the slits-bars 33a of the slits-bar assembly 33 is kept constant within about 50 mm so that the compounding ingredients of the fine powder in the ingredients that fall from the surge hopper 5 are passed through the intervals. Drop (see reference numeral hc in FIG. 6B). On the other hand, the slits-bar 33b installed at the shortest end of the slits-bar assembly 33 is configured to have a relatively larger diameter than the other slits-bars 33a, and as described below, surge The compounding raw material cut out from the hopper 5 keeps the falling distance falling to the sintering trolley 9 according to the particle size size thereof.

According to a preferred embodiment of the present invention, the first plate-like member is attached to the compounding material cut out from the surge hopper 5 to be attached to the charging device so that the falling light of the compounding material is prevented by the attachment light 12 being formed. Each of the 31 and second plate-like members 32 is provided with a first rod-like structure 41 and a second rod-like structure 42 each having a plurality of rod-like members 41a and 42a spaced at predetermined intervals. At this time, the rod-shaped members 41a and 42a of the rod-shaped structures 41 and 42 are provided so that the gaps 31d and 32d (see Fig. 7A) therebetween can be adjusted according to the operation situation.

The first rod-like structure 41 and the second rod-like structure 42 are formed by the first plate-like member 31 and the second plate-like by cylinders 31c and 32c (see photo of FIG. 8) operated by a driving motor (not shown). It is provided to reciprocate from side to side along the transverse direction of the member 32. In addition, a slight gap is maintained between the first rod-shaped structure 41 and the second rod-shaped structure 42 and the first plate-like member 31 and the second plate-like member 32 so that the reciprocating movement can be performed smoothly. . Therefore, since the first rod-shaped structure 41 and the second rod-shaped structure 42 move from side to side while the compounding material cut out from the surge hopper 5 falls, the first plate-like member 31 and the second plate-like member 32 It is possible to prevent the attachment light 12 from being formed.

The first plate-like member 31 and the second plate-like member 32 have a dropping direction of the blended raw material in order to improve the removal efficiency of the adhering light caused by the left and right reciprocating movement of the first rod-shaped structure 41 and the second rod-shaped structure 42. A plurality of rod members 43 are thus spaced apart at predetermined intervals. The rod member 43 is provided with a plurality of through holes in the longitudinal direction thereof. Therefore, the rod-shaped members 41a and 42a of each of the rod-shaped structures 41 and 42 are installed to reciprocate from side to side in a state where they penetrate the through hole.

On the other hand, side walls 36 and 37 having a predetermined height are provided at both ends of each of the first plate-like member 31 and the second plate-like member 32. At this time, injection nozzles 45 and 47 for injecting high pressure air are provided to remove adhesion light formed adjacent to the side walls 36 and 37.

Hereinafter, the operation of the blending raw material charging device according to the present invention.

First, in the conventional one-stage one-piece charging device, it causes the loading imbalance of the compounding material cut out by the rotation of the drum feeder 6 by the attachment light 12 irregularly formed on the deflector plate (7), thereby preventing To this end, according to the present invention, the deflector plate includes a first plate member 31 and a second plate member 32. The inclination angles of the first plate member 31 and the second plate member 32 are adjusted differently by the first tilt angle adjusting device 31b and the second tilt angle adjusting device 32b, respectively. The rod-shaped structures 41 and 42 are provided on the first plate-like member 31 and the second plate-like member 32. The plurality of rod-shaped members 41a and 42a constituting the rod-shaped structures 41 and 42 are spaced apart at intervals of about 40 mm. And the rod member 43 of a predetermined size is installed in the longitudinal direction of the charging apparatus so that the rod-shaped members 41a and 42a may penetrate.

When the raw material is cut out from the surge hopper 5 while the rod-shaped structures 41 and 42 are reciprocated in the left-right direction, the rod-shaped members 41a and 42a and the rod member 43 of each of the rod-shaped structures 41 and 42 are removed. By means of the interaction of the first plate-like member 31 and the second plate-like member 32 as well as preventing the formation of the attachment light to the rod-shaped members (41a, 42a), and also removes the already formed attachment light (12).

As described above, the compounding material cut out by the drum feeder 6 and flowing down along the first plate-like member 31 and the second plate-like member 31 is located at the shortest end of the slit-bar assembly 33. The relatively thick slits-bars 33b have different drop distances depending on their particle size.

That is, the compounding material having relatively large particles falling along the first plate member 31 having the largest inclination angle has a relatively large falling energy and is charged to a distant dropping point (ha) so that the lower portion of the compounding material layer ( The compounding material having relatively small particles constituting 15) has a relatively small drop energy and is charged with a short dropping point hb to constitute the intermediate layer 16 of the compounding material layer. Then, the finely blended raw material falls to the shortest dropping point hc through the gap between the slits-bars 33a to form the upper layer portion 17 of the blended raw material layer. Thus, the blended raw materials are sequentially stacked on the sintered bogie 9 according to their particle size to improve the vertical segregation of the blended raw materials.

According to the present invention, the charging device for charging the blended raw material for sintered ore into the sintered trolley is prevented from forming adhering light, and the blended raw material falls to different dropping points according to its particle size so that By inducing good vertical segregation and preventing horizontal segregation, it is possible to improve the air permeability of the blended raw material on the sintered trolley to improve the productivity and quality of the sintered ore.

The foregoing is merely illustrative of the preferred embodiments of the present invention and those skilled in the art to which the present invention pertains may make modifications and changes to the present invention without departing from the spirit and gist of the invention as set forth in the appended claims. It should be recognized.

Claims (4)

A slitter having a deflector plate installed at a predetermined inclination angle at a lower portion of the drum feeder and a plurality of slits-bars provided at a lower portion of the deflector plate for charging a compounding material cut out by a drum feeder in a predetermined amount from a surge hopper into a sintered trolley. In the compound material charging device for sintered ore having a t-bar assembly, The deflector plate is composed of a plurality of plate-like members which are continuously installed from the bottom of the drum feeder to the slits-bar, And the plate members are adjustable at different angles. The method of claim 1, Each of the plate-like members is provided with a rod-like structure having a plurality of rod-like members capable of reciprocating along its transverse direction. The method of claim 1, Further comprising a plurality of rod members 43 spaced apart at predetermined intervals on the plate member in the direction in which the compounding material falls, the rod member 43 is capable of reciprocating the rod member of the rod-like structure A compound raw material charging device for sintered ore, characterized in that a plurality of penetrating holes are formed therethrough. The method of claim 1, And a diameter of the slits-bar located at the bottom of the slits-bar assembly is relatively large compared to the diameters of the other slits-bars.