CN109988875B - Blast furnace distributing chute - Google Patents
Blast furnace distributing chute Download PDFInfo
- Publication number
- CN109988875B CN109988875B CN201910363459.0A CN201910363459A CN109988875B CN 109988875 B CN109988875 B CN 109988875B CN 201910363459 A CN201910363459 A CN 201910363459A CN 109988875 B CN109988875 B CN 109988875B
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- CN
- China
- Prior art keywords
- shaped groove
- chute
- shell
- chute body
- wear
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- 238000009826 distribution Methods 0.000 claims abstract description 29
- 239000000725 suspension Substances 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 239000004744 fabric Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 abstract description 7
- 238000005299 abrasion Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000000571 coke Substances 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/18—Bell-and-hopper arrangements
- C21B7/20—Bell-and-hopper arrangements with appliances for distributing the burden
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Blast Furnaces (AREA)
- Chutes (AREA)
Abstract
The invention discloses a blast furnace distribution chute, which relates to the technical field of blast furnace ironmaking equipment and comprises a chute body, wherein a suspension arm is connected close to a feed inlet of the chute body, the chute body is provided with a shell with an integral structure, the shell is provided with a U-shaped groove, a wear-resistant lining plate tightly attached to the inner surface of the U-shaped groove is embedded in the U-shaped groove, and a pressing plate for fixing the wear-resistant lining plate in the U-shaped groove is oppositely arranged at an opening of the U-shaped groove. Compared with the prior art, the invention does not need to arrange the cross beam at the discharge hole of the chute body, and avoids the phenomenon that the cross beam is worn or even broken caused by the fact that the furnace burden bounces up the striking cross beam when the material is distributed at an inclined angle of 10-15 degrees. The shell is difficult to deform under high temperature, so that the phenomenon of open welding and damage is prevented, and the service life is prolonged. The wear-resistant lining plate slows down the impact of furnace burden to cause abrasion, padding does not need to be stored at the bottom of the chute body, the weight of the distribution chute is lightened, and meanwhile, the load of the distribution chute rotating device is lightened.
Description
Technical Field
The invention relates to the technical field of blast furnace ironmaking equipment, in particular to a blast furnace distribution chute suitable for small-inclination-angle distribution.
Background
The distributing chute is a key component of the iron-smelting blast furnace, is the last passage of the furnace burden flow into the blast furnace body, and the working position of the distributing chute is at the top of the furnace chamber of the blast furnace and works in a high-temperature environment of 400-600 ℃ for a long time. The furnace burden enters the distribution chute according to a certain flow, the distribution chute rises to a certain inclination angle according to the process requirement, and meanwhile, the distribution chute rotates at a constant speed in the vertical direction, so that the furnace burden is uniformly distributed in the blast furnace. At present, a blast furnace distribution chute comprises a chute body formed by welding a plurality of sections of U-shaped chute bodies, wherein at least two protruding arc-shaped material blocking ribs are arranged at the bottom of the chute body, two cross beams used for reinforcing are arranged at the discharge hole of the chute body, and a suspension arm is connected to the feed inlet of the chute body. The blast furnace distribution chute has the following defects in the production process: 1. when the burden is distributed at a small inclination angle of 10-15 degrees, part of the flowing burden can bounce to strike the cross beam, so that the cross beam is worn or even broken; the furnace is only suitable for distributing at an inclined angle of 15-45 degrees, and the range of furnace burden spreading is wide, so that the gas utilization rate is poor and the fuel consumption is high. 2. The welding lines of the chute body are more, the phenomenon of open welding and breakage easily occurs when the chute body is deformed at high temperature, and the chute body is often damaged after about six months of use, so that the service life is short. 3. The padding is stored at the bottom of the chute body, so that the impact of the flow of the furnace burden can be slowed down to realize abrasion resistance, but the weight of the distribution chute is increased, the load of the distribution chute rotating device is increased, and the rotating device is easy to break down.
Disclosure of Invention
The invention aims to solve the problem of providing a blast furnace distribution chute, which can solve the problem that when small-inclination-angle distribution of 10-15 degrees is adopted, a part of furnace burden can bounce up a striking beam to cause abrasion and even fracture of the beam; the welding lines of the chute body are more, and the chute body is easy to open and damage under high-temperature deformation; padding is stored at the bottom of the chute body, so that the problem of load of the distribution chute rotating device is aggravated.
In order to solve the problems, the invention adopts the following technical scheme: the blast furnace distribution chute comprises a chute body, wherein a suspension arm is connected to a feed inlet close to the chute body, the chute body is provided with a shell with an integral structure, the shell is provided with a U-shaped groove, a wear-resistant lining plate tightly attached to the inner surface of the U-shaped groove is embedded in the U-shaped groove, and a pressing plate for fixing the wear-resistant lining plate in the U-shaped groove is oppositely arranged at the opening of the U-shaped groove.
Among the above-mentioned blast furnace distribution chute technical scheme, more specific technical scheme can also be: the bottom of the groove of the shell discharge hole section is semi-elliptical, and the major axis of the ellipse is positioned in the vertical direction.
Furthermore, the wear-resistant lining plate is assembled in the U-shaped groove in a sectional mode.
Further, two supporting plates are oppositely arranged on the outer side close to the feeding hole of the shell, mounting holes are formed in the supporting plates, and the suspension arm is connected with the shell through bolts penetrating through the mounting holes.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. according to the chute body, the wear-resistant lining plate is embedded in the shell of the integral structure, so that the integral strength of the chute body is improved, a beam is not required to be arranged at a discharge hole of the chute body, and the phenomenon that the beam is worn or even broken due to the fact that furnace burden bounces to strike the beam when 10-15-degree inclined-angle material distribution is adopted is avoided. The shell of the integral structure is not easy to deform under high temperature, so that the phenomena of open welding and breakage are prevented, and the service life is prolonged. The wear-resistant lining plate can slow down the impact of the flow of furnace burden to cause abrasion, padding does not need to be stored at the bottom of the chute body, the weight of the distribution chute is lightened, meanwhile, the load of the rotation device of the distribution chute is lightened, and the rotation device is not easy to fail.
2. The bottom of the groove of the discharge port section of the shell is semi-elliptical, and the major axis of the ellipse is positioned in the vertical direction; prevent that the casing discharge gate section from receiving high temperature deformation seriously and leading to assembly and disassembly tools to be difficult for getting into, make this cloth chute dismouting easy.
3. The wear-resistant lining plate is assembled in the U-shaped groove in a sectional mode, and the wear-resistant lining plate is easy to install and replace.
4. Two supporting plates are oppositely arranged on the outer side close to the feeding hole of the shell, mounting holes are formed in the supporting plates, and the suspension arm is connected with the shell through bolts penetrating through the mounting holes; the suspension arm is easy to assemble and disassemble.
Drawings
Fig. 1 is a schematic structural view of an embodiment of the present invention.
Fig. 2 is a cross-sectional view at a-a in fig. 1.
Detailed Description
The invention is further described in detail below with reference to the examples of the drawings:
the blast furnace distribution chute comprises a chute body, wherein the chute body is provided with a shell 1 with an integral structure, two support plates 5 are oppositely arranged on the outer side close to a feed inlet of the shell 1, mounting holes are formed in the support plates 5, and a suspension arm 4 is connected with the shell 1 through bolts penetrating through the mounting holes. The shell 1 is provided with a U-shaped groove, a wear-resistant lining plate 3 closely attached to the inner surface of the U-shaped groove is embedded in the U-shaped groove, and the wear-resistant lining plate 3 is assembled in the U-shaped groove in a sectional mode. The opening of the U-shaped groove is oppositely provided with a pressing plate 2 for fixing the wear-resistant lining plate 3 in the U-shaped groove, and the pressing plate 2 is connected with the shell 1 through bolts. The bottom of the groove of the discharge hole section of the shell 1 is semi-elliptical, and the major axis of the ellipse is positioned in the vertical direction.
According to the chute body, the wear-resistant lining plate 3 is embedded in the shell 1 with the integral structure, so that the integral strength of the chute body is improved, a beam is not required to be arranged at a discharge hole of the chute body, and the phenomenon that the beam is worn or even broken due to the fact that furnace burden bounces up the striking beam when 10-15-DEG small-inclination-angle material distribution is adopted is avoided. The shell 1 with the integral structure is not easy to deform under high temperature, so that the phenomena of open welding and breakage are prevented, and the service life is prolonged. The wear-resistant lining plate 3 can slow down the impact of the flow of the furnace burden to cause abrasion, the padding does not need to be stored at the bottom of the chute body, the weight of the distribution chute is lightened, meanwhile, the load of the rotation device of the distribution chute is lightened, and the rotation device is not easy to fail. The invention not only can be used for 15-45 DEG dip cloth, but also is suitable for 10-15 DEG dip cloth. The burden spreading range is narrower and more uniform by adopting the material distribution with the inclination angle of 10-15 degrees, the gas utilization rate is higher, and the reducing gas is more effectively utilized, so that the coke consumption is reduced. The distribution chute of the unit No. 1 furnace adopts the design, and is installed and used in 7 months in 2018, so far, the distribution chute and a rotating system are normal in use, the blast furnace condition is stable, the yield is high, and 3kg/tFe of coke is saved after the comprehensive improvement of the No. 1 furnace. The yield of 7 months to 12 months in 2018 is about 79.19 ten thousand tons. And (3) the total saving: 79.19 ten thousand tons x 3 x 2.21 yuan/ton = 525 ten thousand yuan.
Claims (3)
1. The utility model provides a blast furnace cloth chute, is close to including the chute body feed inlet is connected with davit (4), its characterized in that: the chute body is provided with a shell (1) with an integral structure, the shell (1) is provided with a U-shaped groove, a wear-resistant lining plate (3) tightly attached to the inner surface of the U-shaped groove is embedded in the U-shaped groove, and a pressing plate (2) for fixing the wear-resistant lining plate (3) in the U-shaped groove is oppositely arranged at the opening of the U-shaped groove; the bottom of the groove of the discharge hole section of the shell (1) is semi-elliptical, and the major axis of the ellipse is positioned in the vertical direction; the discharge hole of the chute body is not provided with a cross beam, and the pressing plate (2) is connected with the shell (1) through bolts.
2. The blast furnace distribution chute according to claim 1, wherein: the wear-resistant lining plate (3) is assembled in the U-shaped groove in a sectional mode.
3. The blast furnace distribution chute according to claim 1 or 2, wherein: two supporting plates (5) are oppositely arranged on the outer sides close to the feeding holes of the shell (1), mounting holes are formed in the supporting plates (5), and the suspension arm (4) is connected with the shell (1) through bolts penetrating through the mounting holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910363459.0A CN109988875B (en) | 2019-04-30 | 2019-04-30 | Blast furnace distributing chute |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910363459.0A CN109988875B (en) | 2019-04-30 | 2019-04-30 | Blast furnace distributing chute |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109988875A CN109988875A (en) | 2019-07-09 |
| CN109988875B true CN109988875B (en) | 2024-02-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910363459.0A Active CN109988875B (en) | 2019-04-30 | 2019-04-30 | Blast furnace distributing chute |
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| Country | Link |
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| CN (1) | CN109988875B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111910033A (en) * | 2020-08-13 | 2020-11-10 | 柳州钢铁股份有限公司 | Blast furnace distributing chute |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1487527A (en) * | 1975-07-18 | 1977-10-05 | Wurth Anciens Ets Paul | Distribution chute of a shaft furnace charging installation |
| JPH0971803A (en) * | 1995-09-01 | 1997-03-18 | Sumitomo Metal Ind Ltd | Heat-proof type distribution chute for bell-less blast furnace |
| JP2004027324A (en) * | 2002-06-27 | 2004-01-29 | Kurimoto Ltd | Liner and its fitting method |
| CN101798608A (en) * | 2010-03-22 | 2010-08-11 | 本钢板材股份有限公司 | Protective layer arranged outside distribution chute of blast furnace and preparation method thereof |
| CN201648413U (en) * | 2010-02-23 | 2010-11-24 | 宝山钢铁股份有限公司 | Material distribution chute on furnace top of blast furnace |
| CN201686709U (en) * | 2010-03-30 | 2010-12-29 | 中钢集团洛阳耐火材料研究院有限公司 | Abrasion-resistant ceramic bell-less blast furnace distribution chute |
| JP2018178223A (en) * | 2017-04-19 | 2018-11-15 | 新日鐵住金株式会社 | Blast furnace pivoted chute |
| CN210151144U (en) * | 2019-04-30 | 2020-03-17 | 柳州钢铁股份有限公司 | Blast furnace distributing chute |
| CN113584245A (en) * | 2021-07-14 | 2021-11-02 | 徐州德耀矿山机械制造有限公司 | Blast furnace distributing chute with chute lining plate |
-
2019
- 2019-04-30 CN CN201910363459.0A patent/CN109988875B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1487527A (en) * | 1975-07-18 | 1977-10-05 | Wurth Anciens Ets Paul | Distribution chute of a shaft furnace charging installation |
| JPH0971803A (en) * | 1995-09-01 | 1997-03-18 | Sumitomo Metal Ind Ltd | Heat-proof type distribution chute for bell-less blast furnace |
| JP2004027324A (en) * | 2002-06-27 | 2004-01-29 | Kurimoto Ltd | Liner and its fitting method |
| CN201648413U (en) * | 2010-02-23 | 2010-11-24 | 宝山钢铁股份有限公司 | Material distribution chute on furnace top of blast furnace |
| CN101798608A (en) * | 2010-03-22 | 2010-08-11 | 本钢板材股份有限公司 | Protective layer arranged outside distribution chute of blast furnace and preparation method thereof |
| CN201686709U (en) * | 2010-03-30 | 2010-12-29 | 中钢集团洛阳耐火材料研究院有限公司 | Abrasion-resistant ceramic bell-less blast furnace distribution chute |
| JP2018178223A (en) * | 2017-04-19 | 2018-11-15 | 新日鐵住金株式会社 | Blast furnace pivoted chute |
| CN210151144U (en) * | 2019-04-30 | 2020-03-17 | 柳州钢铁股份有限公司 | Blast furnace distributing chute |
| CN113584245A (en) * | 2021-07-14 | 2021-11-02 | 徐州德耀矿山机械制造有限公司 | Blast furnace distributing chute with chute lining plate |
Non-Patent Citations (1)
| Title |
|---|
| 高炉布料溜槽壳体选材分析;杨凤民;冶金设备(第238期);10, 50-52 * |
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| CN109988875A (en) | 2019-07-09 |
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