CN103205520B - Breaker of bound furnace charge in shaft furnace - Google Patents
Breaker of bound furnace charge in shaft furnace Download PDFInfo
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- CN103205520B CN103205520B CN201210007269.3A CN201210007269A CN103205520B CN 103205520 B CN103205520 B CN 103205520B CN 201210007269 A CN201210007269 A CN 201210007269A CN 103205520 B CN103205520 B CN 103205520B
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- furnace
- shaft furnace
- shredder assembly
- shaft
- coal gas
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Abstract
A breaker of a bound furnace charge in a shaft furnace is cylindrical in shape, and two ends of the breaker are horizontally arranged on the furnace shell of the shaft furnace. The breaker is characterized in that the crusher is arranged below the central line of the inlet of the bustle tube of the shaft furnace, the lower surface of the crusher is a horizontal plane, and the bustle tube of the shaft furnace is communicated with a coal gas channel formed below the crusher through a coal gas branch tube II horizontally arranged on the wall of the furnace; and the upper portion of the crusher is an arc surface and is provided with crushing members, and the crushing members can rotate under the action of a driving apparatus. The crusher crushes a bound material formed in the reduction process of the furnace charge, improves the binding condition of the furnace charge, effectively introduces the reduced coal gas to the central zone of the shaft furnace through utilizing the coal gas channel unfilled with the furnace charge and formed below the crusher, has shaft furnace center coal gas flow activating and shaft furnace coal gas flow distribution effects, allows the shaft furnace coal gas flow distribution to be reasonably adjusted, has a simple structure, and is convenient to install and operate.
Description
Technical field
The present invention relates to a kind of reduction shaft furnace, the shredder assembly of the furnace charge that is specifically related to bond in a kind of Shaft Furnace Direct Reduction Process.
Direct-reduced iron is to be iron by iron ore direct-reduction under solid conditions, there is the advantages such as stable components, detrimental impurity are low, epigranular, can be used as the pure raw material of smelting high-quality steel, special steel, also can be used as the iron-bearing material of the techniques such as casting, iron alloy, powder metallurgy.
World's non-blast furnace ironmaking ultimate production 7,100 ten thousand t/a in 2008, hot metal output 4,000,000 t/a of melting and reducing wherein, direct-reduced iron output 6,700 ten thousand t/a.And have 5,102 ten thousand t/a in the middle of 6,700 ten thousand t/a direct-reduced irons, are shaft furnace productions, reduction shaft furnace is the main flow of direct-reduced iron.
Shaft furnace is typical gas-solid counter-current reactor, iron-bearing material is joined in shaft furnace by shaft furnace top, reverse and go with the reducing gas being imported by equally distributed branch gas tube on the circumferential direction of shaft furnace middle and lower part in its decline process, complete conduct heat and reduction after the sponge iron that obtains by the discharge of shaft furnace bottom.Along with the increase of direct-reduced iron output and the maximization of equipment, shaft furnace develops into the ultra-large type of 200 tons from 80 tons, and its diameter is also increased to 8.5m from 5.6m.The increase of shaft furnace diameter distributes to Gas Flow in its stove and furnace charge reduces and all exerts an influence, and practice shows, the problems such as charging binding that large-scale shaft furnace exists that center Gas Flow is inactive, Gas Flow segregation and Gas Flow segregation cause.
Bonding furnace charge shredder assembly in existing a kind of shaft furnace, for column and be horizontally set on shaft furnace housing, although this shredder assembly can play the effect of broken furnace charge, still exist Lu Nei center coal gas inactive, the problems such as charging binding that Gas Flow segregation and Gas Flow segregation cause.
Summary of the invention
The object of the present invention is to provide a kind of interior bonding of shaft furnace furnace charge shredder assembly that can improve Gas Flow distribution in stove.
The object of the present invention is achieved like this, bonding furnace charge shredder assembly in a kind of shaft furnace, for column and both ends horizontal are arranged on shaft furnace furnace shell, it is characterized in that: described shredder assembly is arranged on below shaft furnace bustle pipe center line of suction and lower surface is horizontal plane, and described shaft furnace bustle pipe is communicated with the gas flue that described shredder assembly forms below by the branch gas tube II being horizontally set on furnace wall; Described shredder assembly top is arc surface and is provided with crushing members, under the effect of drive unit, can rotate.
Because material and the gas temperature of shaft furnace bustle pipe section are higher, in order to reduce temperature, above-mentioned shredder assembly is established water-cooled facility, comprises water coolant ingress pipe and water coolant delivery line.
In order to guarantee that in shaft furnace, coal gas is not revealed, above-mentioned shredder assembly and vertical furnace shell joint synapsis are provided with tightness system.
For stabilized structure, reliable, the two ends of above-mentioned shredder assembly are provided with external stability and support.
For the ease of external stability support, drive unit and tightness system are installed, do not interfere with gas entry pipeline, above-mentioned shredder assembly arranges with gas entry pipeline is vertical.
Different according to reduction shaft furnace diameter, the shredder assembly of configurable different quantities.Shredder assembly is under drive unit effect, along clockwise, counter clockwise direction small angle rotation, charging binding thing shaft furnace high temperature reduction section easily being produced by crushing members carries out fragmentation, avoids forming larger adhesive, affect the coal gas segregation problem that shaft furnace charging segregation causes, and promote furnace charge descending.This shredder assembly lower surface is horizontal plane, in the process of charging movement, be subject to the motion characteristics of furnace charge, shredder assembly below forms the gas flue of not filling furnace charge, this gas flue is connected with shaft furnace bustle pipe by branch gas tube II, and a certain proportion of reducing gas enters shaft furnace inside by this gas flue.
The present invention has following beneficial effect, the adhesive that shredder assembly of the present invention forms in to furnace charge reduction process is carried out fragmentation, when improving the bonding situation of furnace charge, the gas flue of not filling furnace charge that utilizes shredder assembly below to form, effectively introduces reducing gas shaft furnace central section, has played and has enlivened shaft furnace center Gas Flow, improve the effect that shaft furnace Gas Flow distributes, shaft furnace Gas Flow is distributed and rationally regulated, and simple in structure, installation and easy to operate.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention structural representation;
Fig. 2 is Fig. 1 schematic side view.
Embodiment
Embodiment, referring to accompanying drawing, bonding furnace charge shredder assembly in a kind of shaft furnace, shredder assembly 5 is arranged on the furnace shell below shaft furnace 1 bustle pipe center line of suction for tubing string shape and both ends horizontal; Shredder assembly 5 tops are arc surface and are welded with crushing members 7, and lower surface is horizontal plane, and the gas flue 6 that shaft furnace bustle pipe 3 forms with shredder assembly 5 below by the branch gas tube II 14 being horizontally set on furnace wall is communicated with; Shredder assembly 5 is connected with drive unit 13, establishes water coolant ingress pipe 11 and water coolant delivery line 12 in shredder assembly 5; The two ends of shredder assembly 5 are provided with external stability support 9 and are provided with tightness system 8 with shaft furnace 1 furnace shell contact position, shredder assembly setting vertical with gas entry 2.
Shaft furnace 1 reducing gas used enters shaft furnace bustle pipe 3 from shaft furnace bustle pipe gas entry 2, at bustle pipe circumferential direction, is distributed with branch gas tube 4, and quantity is 80, and reducing gas enters in shaft furnace 1 by branch gas tube 4.The present embodiment has been installed three shredder assemblys 5, clockwise under the effect of drive unit 13, the counterclockwise small angle rotation of crushing members 7, the charging binding thing that can easily produce shaft furnace high temperature reduction section in rotary course carries out crushing effect, avoid forming larger adhesive, affect the coal gas segregation problem that shaft furnace charging segregation and charging segregation cause, and promote furnace charge descending.In the process of charging movement, be subject to the motion characteristics of furnace charge, shredder assembly 5 belows form the gas flue 6 of not filling furnace charge, gas flue 6 is communicated with shaft furnace bustle pipe 3 by branch gas tube II 14, the reducing gas that enters 3 sections of shaft furnace bustle pipes is input to shaft furnace 1 inside by the branch gas tube II 14 communicating with gas flue 6, improve shaft furnace center gas flow, play the effect that regulates shaft furnace Gas Flow to distribute.Shredder assembly 5 is higher at material and the gas temperature of 3 sections of shaft furnace bustle pipes, so the interior water-cooled facility that arranges of shredder assembly 5, comprises water coolant ingress pipe 11, water coolant delivery line 12.Shredder assembly 5 is provided with sealing with shaft furnace 1 furnace shell junction and arranges 8, with guarantee with external stability support 9 and drive unit 13 be connected and shaft furnace in not the revealing of coal gas.
Claims (4)
1. furnace charge shredder assembly bonds in a shaft furnace, described shredder assembly (5) is arranged on shaft furnace (1) furnace shell (10) for tubing string shape and both ends horizontal, it is characterized in that: described shredder assembly (5) is arranged on below shaft furnace bustle pipe (3) center line of suction and lower surface is horizontal plane, the gas flue (6) that described shaft furnace bustle pipe (3) forms with described shredder assembly (5) below by the branch gas tube II (14) being horizontally set on furnace wall is communicated with, described shredder assembly (5) top is arc surface and is provided with crushing members (7), under the effect of drive unit (13), can rotate.
2. bonding furnace charge shredder assembly in shaft furnace as claimed in claim 1, is characterized in that: described shredder assembly (5) is provided with water-cooled facility and comprises water coolant ingress pipe (11) and water coolant delivery line (12).
3. bonding furnace charge shredder assembly in shaft furnace as claimed in claim 1 or 2, is characterized in that: the two ends of described shredder assembly (5) are provided with external stability and support (9) and be provided with tightness system (8) with shaft furnace (1) furnace shell (10) contact position.
4. bonding furnace charge shredder assembly in shaft furnace as claimed in claim 3, is characterized in that: described shredder assembly (5) and vertical setting of gas entry (2) pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210007269.3A CN103205520B (en) | 2012-01-11 | 2012-01-11 | Breaker of bound furnace charge in shaft furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210007269.3A CN103205520B (en) | 2012-01-11 | 2012-01-11 | Breaker of bound furnace charge in shaft furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103205520A CN103205520A (en) | 2013-07-17 |
| CN103205520B true CN103205520B (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210007269.3A Active CN103205520B (en) | 2012-01-11 | 2012-01-11 | Breaker of bound furnace charge in shaft furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN103205520B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5922764B2 (en) * | 1980-04-07 | 1984-05-29 | 新日本製鐵株式会社 | Raw material charging device for shaft reduction furnace |
| CN2811898Y (en) * | 2005-08-17 | 2006-08-30 | 冷举顺 | Inside material layer mixed combustion type palletizing shaft furnace |
| CN200949991Y (en) * | 2006-04-28 | 2007-09-19 | 刘龙 | Novel crash and discharge screen of shaft kiln |
| CN201284349Y (en) * | 2008-10-27 | 2009-08-05 | 宝山钢铁股份有限公司 | Cold state analog experiment apparatus for COREX high furnace distribution and air flow distribution |
| CN201514101U (en) * | 2009-09-22 | 2010-06-23 | 南京钢铁股份有限公司 | Shaft furnace tooth-roller discharger fixed roll device |
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2012
- 2012-01-11 CN CN201210007269.3A patent/CN103205520B/en active Active
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| CN103205520A (en) | 2013-07-17 |
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