KR101820685B1 - Apparatus of charging material for sintering - Google Patents

Apparatus of charging material for sintering Download PDF

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Publication number
KR101820685B1
KR101820685B1 KR1020150147358A KR20150147358A KR101820685B1 KR 101820685 B1 KR101820685 B1 KR 101820685B1 KR 1020150147358 A KR1020150147358 A KR 1020150147358A KR 20150147358 A KR20150147358 A KR 20150147358A KR 101820685 B1 KR101820685 B1 KR 101820685B1
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KR
South Korea
Prior art keywords
swash plate
raw material
cooling
hopper
charging
Prior art date
Application number
KR1020150147358A
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Korean (ko)
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KR20170047451A (en
Inventor
정해권
박종인
정은호
조병국
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(주)포스코
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Application filed by (주)포스코 filed Critical (주)포스코
Priority to KR1020150147358A priority Critical patent/KR101820685B1/en
Priority to CN201580074932.3A priority patent/CN107208978B/en
Priority to PCT/KR2015/014259 priority patent/WO2017069341A1/en
Priority to JP2017536843A priority patent/JP6539349B2/en
Publication of KR20170047451A publication Critical patent/KR20170047451A/en
Application granted granted Critical
Publication of KR101820685B1 publication Critical patent/KR101820685B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/0033—Charging; Discharging; Manipulation of charge charging of particulate material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D9/00—Cooling of furnaces or of charges therein
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/007—Cooling of charges therein
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/007—Cooling of charges therein
    • F27D2009/0081—Cooling of charges therein the cooling medium being a fluid (other than a gas in direct or indirect contact with the charge)

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

A method for preventing adhering light according to the present invention and a device for charging a raw material of a sintered ores using the same, comprising: a hopper for feeding raw materials for sintered ores; A drum feeder installed at a lower portion of the hopper and discharging the raw material from the hopper while rotating; A charging chute for supplying a raw material from the drum feeder and supplying the raw material to a sintering bogie; A swash plate for transferring the raw material discharged from the drum feeder to the charging chute; And a cooling part for cooling the swash plate to form a water film on the surface of the swash plate, wherein the cooling part includes a heat exchanger, an internal pipe arranged in a zigzag shape inside the swash plate, A supply pipe connected to one end of the internal pipe and transferring the refrigerant by connecting the one end of the internal pipe to the heat exchanger, and a recovery pipe installed outside the swash plate and connected between the other end of the internal pipe and the heat exchanger, And cooling the end portions of both sides of the swash plate locally.

Description

[0001] APPARATUS OF CHARGING MATERIAL FOR SINTERING [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for charging a raw material of a sintered ores, and more particularly to an apparatus for charging a source of sintered ores that prevents the generation of adhering light generated in an apparatus for charging sintered ores.

In general, sintered ores are produced by charging raw materials for sintering into a sintering machine. The raw materials for sintering are mainly composed of iron ores such as magnetite (Fe 3 O 4 ) and hematite (Fe 2 O 3 ), and limestone, The raw materials such as silica sand and quicklime and other raw materials such as Mill scale and dust and raw coke are quantitatively blended and pelletized through the mixing and granulation process to be charged into the sintering machine.

As shown in FIGS. 1 and 2, the sintered ores are segregated in a process of being charged into a sintering vehicle 1 through a deflector plate or a charging chute 6 composed of a plurality of rolls or rods, At this time, the relatively large and heavy particles are charged at the lower end of the sintering vehicle 1 and the fine particles are charged at the upper end to induce the segregation charging so as to improve the air permeability in the sintering process.

However, if the raw material dispensed from the drum feeder 2 falls directly into the charging chute 6, the falling strength in the horizontal direction is uneven, which causes horizontal charging deviation. When the slanting plate 100 having a predetermined length is provided between the drum feeder 2 and the charging chute 6, a uniform charging density in the horizontal direction due to the frictional force of the swash plate 100 during movement of the slanting plate 100 So that it is possible to reduce the horizontal loading deviation and to arrange the charging chute 6 backward by the length of the swash plate. Therefore, when the discharge space is narrow, it is advantageous to secure the distance to discharge the raw material.

However, when adhering light is generated in the left and right ends of the inclined plate 100 in the horizontal direction while the compounding material passes the swash plate 100, there arises a problem of increasing the horizontal direction loading deviation. In order to prevent this, operators are manually removing the adhesive light at regular intervals, but the work load increases and it involves dangerous work.

A conventional scraper is reciprocated in the left-right direction by a mechanical driving unit to remove the adhering light in the conventional "sintering material charging apparatus" (Korean Patent Laid-open Publication No. 10-2011-0047030 Is removed.

However, the above-described invention may distort the trajectory of the blended raw material charged by the horizontal movement of the scrapers, causing a horizontal loading deviation, and complicated mechanical driving parts are required.

Accordingly, there is a need for a new method and apparatus capable of preventing the adhering light without using a method of inhibiting the flow of the raw material, such as mechanically removing the adhering light, with a simpler structure.

Korean Patent Publication No. 10-2011-0047030 (May 05, 2011))

SUMMARY OF THE INVENTION The present invention has been made in order to solve such a problem, and an object of the present invention is to provide a device for charging a raw material for sintering light which can prevent the occurrence of adhering light without mechanical removal means.

According to an aspect of the present invention, there is provided an apparatus for feeding a raw material for sintered ores, the apparatus comprising: a hopper to which raw materials for sintered ores are charged; A drum feeder installed at a lower portion of the hopper and discharging the raw material from the hopper while rotating; A charging chute for supplying a raw material from the drum feeder and supplying the raw material to a sintering bogie; A swash plate for transferring the raw material discharged from the drum feeder to the charging chute; And a cooling part for cooling the swash plate to form a water film on the surface of the swash plate, wherein the cooling part includes a heat exchanger, an internal pipe disposed in the staggered plate and disposed in a staggered configuration, A supply pipe connected to one end of the internal pipe and transferring the refrigerant by connecting the one end of the internal pipe to the heat exchanger, and a recovery pipe installed outside the swash plate and connected between the other end of the internal pipe and the heat exchanger, And cooling the end portions of both sides of the swash plate locally.

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The inner pipe is inserted into both lateral ends of the swash plate to cool the both lateral ends of the swash plate locally.

The cooling unit includes a pump for circulating the coolant, further comprising a control part for controlling the pump, wherein, the refrigerant circulation rate of the pump so as to have a 635W / m 2 or more per unit area of heat transfer rate when the swash plate to cool And a control unit.

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According to the method for preventing adhering light according to the present invention and the apparatus for charging a raw material for sinter using the same, the following effects can be obtained.

First, it is possible to prevent the deposition light from being generated on the swash plate, and to reduce the deviation of charging of the raw material of the sintered ores.

Secondly, since manual work and scrapers of the operator are unnecessary, it is possible to prevent the charging deviation from occurring due to these.

Third, since the moisture contained in the raw material itself is utilized, an additional water supply device is not necessary, so that it can be easily applied to a conventional charging apparatus only by replacing the swash plate.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a conventional sintered light charging device,
2 is a view illustrating an apparatus for charging sintered ores according to an embodiment of the present invention.
3 is a view showing a swash plate and a cooling section for transferring a raw material from a drum feeder to a charging chute,
4 is a view showing a state in which an internal pipe is inserted into a swash plate,
5 is a graph showing the heat transfer coefficient according to the refrigerant flow rate,
6 is a graph showing the water condensation amount according to the refrigerant flow rate.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified, and that other specific features, regions, integers, steps, operations, elements, components, and / And the like.

Unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Commonly used predefined terms are further interpreted as having a meaning consistent with the relevant technical literature and the present disclosure, and are not to be construed as ideal or very formal meanings unless defined otherwise.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for preventing adhering light according to a preferred embodiment of the present invention and a device for charging a raw material of a sintered ores using the same will be described with reference to the accompanying drawings.

2 and 3, the apparatus for charging raw material stock according to the present invention includes a hopper 3, a drum feeder 2, a charging chute 6, a swash plate 100, and a cooling unit 120 .

The hopper 3 is a place where the raw material of the sintered ores is charged, and the raw material is discharged by a predetermined amount by the rotation of the drum feeder 2. At this time, the discharge deviation of the raw material is reduced by the hopper gate 3a. The charging chute 6 has a structure in which the raw materials discharged from the hopper 3 are classified according to sizes and charged into the sintering bogie 1. The charging chute 6 has a structure in which a raw material having a small particle size will be.

The hopper 3, the drum feeder 2, and the charging chute 6 are generally used, and a detailed description thereof will be omitted here.

The swash plate 100 transfers the raw material discharged from the drum feeder 2 to the charging chute 6. The swash plate 100 has a plate-like structure and is installed in a direction in which the raw material is discharged from the drum feeder 2, and is gradually lowered toward the charging chute 6.

Such a swash plate 100 is configured to reduce the deviation in the width direction of the raw material and to maintain the supply density of the raw material at a constant level and to make the distance between the drum feeder 2 and the charging chute 6 more distant , And perform various roles.

At both ends of the swash plate 100 in the width direction, a shroud is provided to prevent the material from falling to the right and left of the swash plate 100, though not shown. However, due to the influence of the clogging plate, the raw materials are accumulated at the opposite end portions of the swash plate 100, and they are grown as adhered light.

In order to solve this problem, a cooling unit 120 is installed. The cooling unit 120 is configured to cool the swash plate 100, and water is condensed on the surface of the cooling unit 120 to form a water film. The raw material of the sintered ores is composed of pseudoparticles formed by assembling fine iron ores, cokes, and the like using water. The moisture contained in the raw materials of the sintered ores is condensed on the surface of the swash plate 100.

When moisture is condensed on the surface of the swash plate 100 to form a water film, the frictional force of the swash plate 100 is reduced and the material slips down more easily, thereby preventing the accumulation of the raw materials. Thereby preventing the generation of adhered light primarily.

The sintered ores contain limestone. Ca contained in the limestone reacts with the impurities in the raw material and causes cementation to form adhered light. At this time, if a water film is formed on the surface of the swash plate 100, the calcium carbonate (CaCO 3 ) causing cementation can be converted into calcium hydrogen carbonate (Ca (HCO 3 ) 2 ) which is dissolved in water. Accordingly, cementing of the adhering light can be prevented, which means that the adhered light is easily removed by the weight of the raw material. So that it is possible to prevent the secondary light from being generated.

As described above, the attachment light formed on the swash plate 100 is mainly formed at both lateral ends of the swash plate 100. This means that in order to prevent the occurrence of adhering light, a water film should be formed at the end portions in both lateral directions of the swash plate 100.

Therefore, it is preferable that the cooling unit 120 cool the end portions of both side surfaces of the swash plate 100 locally.

The cooling unit 120 includes a heat exchanger 121, an internal pipe 124 disposed inside the swash plate 100 and arranged in a zigzag shape, and an internal pipe 124 disposed outside the swash plate 100, A supply pipe 122 for connecting the one end to the heat exchanger 121 and transferring the refrigerant to the other end of the inner pipe 124 and connecting the other end of the inner pipe 124 to the heat exchanger 121, And a recovery pipe 123 for transferring the recovered water. (Not shown) for circulating the refrigerant and a control unit (not shown) for controlling the refrigerant circulation speed of the pump.

The inner pipe 124 is inserted into the swash plate 100 to cool both lateral ends of the swash plate 100. Both ends of the inner pipe 124 protrude from the side surface of the swash plate 100 and are disposed in a zigzag form in the swash plate 100 to more effectively absorb the heat of the swash plate 100.

There is no need to cool the swash plate 100 entirely unnecessarily because the attachment light does not easily occur at the central portion of the swash plate 100. [ Therefore, if the inner pipe 124 is inserted into the area of 1/4 of both sides of the entire area of the swash plate 100, it will be effective to prevent the occurrence of adhering light.

If the inner pipe 124 is inserted over the entire area of the swash plate 100, the amount of the required refrigerant increases and the circulation speed of the refrigerant must also be increased, which may lead to a waste of resources and energy.

As shown in FIGS. 5 and 6, as the flow rate of the refrigerant increases, the theoretical condensation amount of the heat transfer coefficient and the moisture increases.

Preferably, the control unit controls the pump to adjust the flow rate of the refrigerant by adjusting the operation speed of the pump so that the heat transfer rate is 635 W / m 2 or more, and the theoretical condensation amount is 92.5 g / hr.m 2 or more.

The condensation due to cooling and the amount of adhered material were tested as follows.

A round bar was inserted into an iron block of the same material as the swash plate, and the refrigerant was passed through the round bar. The round bar was in the shape of a pipe having an outer diameter of 20 mm, and the coolant of 5 was passed through the inside at a rate of 7 L / min.

Was a flat steel block area of 0.108m 2, per unit area of heat transfer rate was 635 W / m 2 to 40 based on the outside air. At this time, the surface temperature of the iron block was 5.8 and the condensed water amount was 92.5 g / hr.m 2 . Under these conditions, no adhered light was generated. It was confirmed that the hard lime and fine raw material particles, which are the cause of adhering light, were washed off by the lubrication and gravity of the water film due to the water film formed on the surface of the iron block.

Therefore, when the heat transfer rate per unit area on the surface is 635 W / m 2 or more, it is expected that the water film is formed by condensation of moisture and the production of adhered light can be suppressed by the lubricating action.

On the other hand, the adhering light generation prevention method locally cools the both lateral ends of the swash plate for transferring the raw material discharged from the drum feeder to the charging chute, thereby forming a water film on the surface of the swash plate.

At this time, it is preferable to cool the swash plate at a heat transfer rate of 635 W / m 2 or more per unit area and condense moisture of 92.5 g / hr.m 2 or more on the surface of the swash plate.

A more detailed explanation thereof is given in the description of the above-described apparatus for charging a raw material raw material.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand.

It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be interpreted as being included in the scope of the present invention .

1: Sintering drum 2: Drum feeder
3: hopper 3a: hopper gate
4: upper optical hopper 4a: upper optical gate
6: charging chute 8: alignment plate
100: swash plate 110: cooling position (side end of swash plate)
120: cooling section 121: heat exchanger
122: supply pipe 123: return pipe
124: Internal piping

Claims (8)

An apparatus for supplying a sintering raw material to a sintering vehicle,
A hopper in which the raw material of the sintered ores is charged;
A drum feeder installed at a lower portion of the hopper and discharging the raw material from the hopper while rotating;
A charging chute for supplying a raw material from the drum feeder and supplying the raw material to a sintering bogie;
A swash plate for transferring the raw material discharged from the drum feeder to the charging chute; And
And a cooling unit for cooling the swash plate to form a water film on a surface of the swash plate,
The cooling section includes a heat exchanger, an internal pipe disposed inside the swash plate and arranged in a zigzag shape, a supply pipe installed outside the swash plate, connecting the one end of the internal pipe and the heat exchanger to transfer the refrigerant, And a recovery pipe which is installed outside the swash plate and connects the other end of the inner pipe and the heat exchanger to transfer the refrigerant, wherein the end of both sides of the swash plate is cooled locally. Charging device.
delete delete The method according to claim 1,
Wherein the inner pipe is inserted into both lateral ends of the swash plate to locally cool both lateral ends of the swash plate.
The method of claim 4,
Wherein the cooling unit further includes a pump for circulating the refrigerant and a control unit for controlling the pump,
Wherein the control unit controls the refrigerant circulation speed of the pump so that the cooling plate has a heat transfer coefficient per unit area of 635 W / m 2 or more when the swash plate is cooled.
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KR1020150147358A 2015-10-22 2015-10-22 Apparatus of charging material for sintering KR101820685B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020150147358A KR101820685B1 (en) 2015-10-22 2015-10-22 Apparatus of charging material for sintering
CN201580074932.3A CN107208978B (en) 2015-10-22 2015-12-24 Raw material charging appliance, chill roll and the method for preventing adherency ore from generating
PCT/KR2015/014259 WO2017069341A1 (en) 2015-10-22 2015-12-24 Raw material charging device, cooling roller, and method for preventing generation of stuck ores
JP2017536843A JP6539349B2 (en) 2015-10-22 2015-12-24 Raw material charging device, cooling roller and method for preventing adhesion ore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150147358A KR101820685B1 (en) 2015-10-22 2015-10-22 Apparatus of charging material for sintering

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KR20170047451A KR20170047451A (en) 2017-05-08
KR101820685B1 true KR101820685B1 (en) 2018-01-23

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101964289B1 (en) * 2017-09-12 2019-04-01 주식회사 포스코 Raw materials feeding device for manufacturing sinter ore, and the method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100752127B1 (en) * 2006-07-06 2007-08-24 주식회사 포스코 Adhesion mine generation prevention equipment

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100752127B1 (en) * 2006-07-06 2007-08-24 주식회사 포스코 Adhesion mine generation prevention equipment

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