CN106052406B - A kind of off-line type scrap steel preheating stove - Google Patents
A kind of off-line type scrap steel preheating stove Download PDFInfo
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- CN106052406B CN106052406B CN201610594757.7A CN201610594757A CN106052406B CN 106052406 B CN106052406 B CN 106052406B CN 201610594757 A CN201610594757 A CN 201610594757A CN 106052406 B CN106052406 B CN 106052406B
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- furnace body
- furnace
- bell
- line type
- gas outlet
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Classifications
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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
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention discloses a kind of off-line type scrap steel preheating stoves, belong to steelmaking technical field, including fixed in position furnace body in a tubular form, furnace bottom that is removable closed or opening bottom of furnace body and removable closed or open bell at the top of furnace body, the upper area of the bell or furnace body is provided with smoke inlet, and the lower area of the furnace body is provided with the exhanst gas outlet of oblique top.Smoke inlet by being arranged on the upper area of bell or furnace body by the present invention, exhanst gas outlet is arranged on the lower area of furnace body, high-temperature flue gas is introduced from furnace roof, and discharged from bottom of furnace body region so that the local melting of steel scrap will not be bonded on furnace body near being located at smoke inlet, steel scrap will not be formed and stopped, the phenomenon that steel scrap can not fall, the reliability enhancing of equipment are avoided, maintenance cost reduces.
Description
Technical field
The invention belongs to steelmaking technical fields, and in particular to a kind of off-line type scrap steel preheating stove.
Background technology
In STEELMAKING PRODUCTION particularly in electric arc furnaces production, steel scrap is preheated with flue gas or can with gas heating steel scrap
Electric energy is saved, shortens smelting cycle, improves production efficiency.Application No. is 2016010465611.2 patent, " a kind of material is offline
Heat smoke preheating device and its pre-heating mean " provides a kind of offline preheating technology of steel scrap, does not change original production model,
Equipment flexible arrangement, investment for trnasforming urban land is low, is very suitable for the reducing energy consumption of existing electric arc furnaces workshop.
The preheating device smoke inlet of the technology is located at preheating chamber lower area, situations such as easily getting stuck, and high temperature
When flue gas or burner introduce preheating chamber, easily make steel scrap local melting at smoke inlet, bonding, occur what can not be fallen naturally
Phenomenon increases plant maintenance amount, influences normally to produce.
Invention content
In view of this, the purpose of the present invention is to provide a kind of improved off-line type scrap steel preheating stoves, simple in structure, manufacture
It is easy to process, avoid generating get stuck, sizing phenomena such as influence normal production, equipment dependability is high, and maintenance is small.
In order to achieve the above objectives, the present invention provides following technical solution：
A kind of off-line type scrap steel preheating stove, including fixed in position furnace body in a tubular form, removable closed or open furnace body bottom
The upper area of bell at the top of the furnace bottom in portion and removable closed or opening furnace body, the bell or furnace body is provided with flue gas and enters
Mouthful, the lower area of the furnace body is provided with the exhanst gas outlet of oblique top.
Further, the furnace bottom is made of two bearing material parts for being symmetrically hinged on bottom of furnace body, and respectively rotate around the axis reality
Now open and close the operation of furnace bottom.
Further, the bearing material part includes half-conical material bearing disc and two turns be symmetricly set on half-conical material bearing disc
Arm, the pivoted arm is located near the outer round surface where semicircle trimming, and is connect respectively with furnace body with shaft.
Further, the bottom of furnace body is planar ring structure, and the furnace bottom top is planar ring structure, between the two
Gap is formed, furnace body is made to keep closed.
Further, the furnace body, bell, furnace bottom, smoke inlet, exhanst gas outlet are both provided with water-cooling structure.
Further, the furnace body, bell, smoke inlet, exhanst gas outlet inside are equipped with refractory material.
Further, the mixed wind for being arranged on exhanst gas outlet side wall adjusts door.
Further, the fixation backgauge part for being fixed at smoke outlet is further included.
Further, exhanst gas outlet quantity is two or more, around lower portion of furnace body area distribution.
The beneficial effects of the present invention are：
The present invention is arranged on by the way that smoke inlet to be arranged on to the upper area of bell or furnace body, exhanst gas outlet under furnace body
Portion region introduces high-temperature flue gas, and discharged from bottom of furnace body region so that the local melting of steel scrap is located at flue gas from furnace roof
It near inlet, will not be bonded on furnace body, steel scrap will not be formed and stopped, avoid the phenomenon that steel scrap can not fall,
The reliability enhancing of equipment, maintenance cost reduce.
Other advantages, target and the feature of the present invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.The target and other advantages of the present invention can by following specification realizing and
It obtains.
Description of the drawings
In order to make the purpose of the present invention, technical solution and advantageous effect clearer, the present invention provides drawings described below and carries out
Explanation：
Fig. 1 is the 3 dimensional drawing of the present invention；
Fig. 2 is the sectional view of first embodiment of the invention；
Fig. 3 is the schematic diagram that first embodiment opens bell charging；
Fig. 4 is the schematic diagram that first embodiment opens furnace bottom discharging；
The schematic diagram of Fig. 5 gap sealings between first embodiment furnace body and furnace bottom；
Fig. 6 is the structure diagram of first embodiment furnace bottom；
Fig. 7 mixes wind for first embodiment and adjusts door schematic diagram；
Fig. 8 is the sectional view of second embodiment of the invention.
Reference numeral：
1- bells；2- furnace bodies；21- planar ring structures I；3- steel scraps；4- furnace bottoms；41- bearing material parts；42- plane annulars
Structure I I；43- half-conical material bearing discs；44- pivoted arms；45- shafts；5- smoke inlets；6- exhanst gas outlets；61- fixes backgauge part；
62- mixes wind and adjusts door；7- gaps；8- refractory materials；9- burners.
Specific embodiment
Below in conjunction with attached drawing, the preferred embodiment of the present invention is described in detail.
Embodiment 1：
As shown in figs. 1-7, a kind of off-line type scrap steel preheating stove, including bell 1, furnace body 2, furnace bottom 4, smoke inlet 5, flue gas
Outlet 6, the furnace body 2 and in both ends open tubular structure, top in cone, bottom for cylinder, furnace body 2 fix peace
It puts, for accommodating the steel scrap 3；The bell 1 is movably disposed within the top of furnace body 2, stove during steel scrap 3 being kept to heat
Body 2 is closed；The furnace bottom 4 is made of two bearing material parts 41 being arranged symmetrically, and steel scrap 3 is carried in the closed position, in institute
Stating open position can be such that steel scrap 3 falls completely.The planar ring structure I 21 of the bottom of furnace body and the plane on furnace bottom top
Long and narrow gap 7 is equipped between loop configuration II42, forms gap sealing to keep furnace body 2 closed, while is suitable for manufacture and misses
Difference and thermal deformation, the bearing material part 41 include half-conical material bearing disc 43 and two pivoted arms being symmetricly set on half-conical material bearing disc
44, the pivoted arm 44 is located near the outer round surface where semicircle trimming, and is connect respectively with furnace body shaft 45, respectively rotates
Shaft rotation moves the operation realized and open and close furnace bottom, since half-conical material bearing disc has to recessed structure, in closed position and
When being moved between open position, the loop configuration 21 of bottom of furnace body can be avoided, ensures that furnace bottom 4 can smooth opening and closing.
As the improvement of the present embodiment, bell 1, furnace body 2, furnace bottom 4, smoke inlet 5, exhanst gas outlet 6 are both provided with water cooling
Structure, to meet the needs of being run under worst hot case for a long time.Smoke inlet 5 is located at bell, can make high-temperature flue gas equably into
Enter the steel scrap layer in furnace body, even if steel scrap local melting, due to that far from furnace wall, will not be bonded on furnace body, and stove
High-temperature area avoid the more complicated furnace bottom lower area of structure, the quantity of exhanst gas outlet 6 is two, around lower portion of furnace body area
Domain is distributed, and has been arranged in low-temperature space and has favorably been reduced the maintenance of equipment and reduce steel scrap cold-zone in stove, improves pre-heat effect.Cigarette
Gas outlet 6 is equipped with fixed backgauge part 61, steel scrap is prevented to enter exhanst gas outlet channel, to avoid steel scrap card resistance in exhaust gases passes
It can not fall naturally.
What deserves to be explained is smoke inlet 5 as needed may also set up the upper area in furnace body, equally, can also reach
To above-mentioned purpose.
During work, furnace bottom 4 is rocked to closed position, opens bell 1 and steel scrap 3 is added in into stove, be then shut off bell 1,
High-temperature flue gas enters furnace body from smoke inlet 5, is discharged after penetrating steel scrap 3 from exhanst gas outlet 6.Through preheating after a period of time, give up
After steel reaches set preheating temperature, furnace bottom 4 is opened, steel scrap 3 is made to fall into material basket, then lift to electric arc furnaces (not shown).
As the improvement of the present embodiment, furnace body 2, bell 1, smoke inlet 5,6 inside of exhanst gas outlet are equipped with refractory material 8,
Preheating furnace heat loss can be reduced, cooling water inflow is saved, at the same time improves the thermal efficiency.
As the improvement of the present embodiment, smoke outlet is equipped with mixed wind and adjusts door 62, real-time by adjusting door opening size
The mixed air quantity of exhanst gas outlet is adjusted, reduces flue gas exit temperature to meet dust removal process needs, while plays rear portion pipe-line equipment and holds
(mixed wind is very few, and flue-gas temperature is high, the cloth bag of easy damaged dust pelletizing system for the temperature received；Mixed wind is excessive, and stove dust removing effects are poor, add
Big wind turbine traffic requirement), reduce cooling water consumption；It can also lead in addition, mixed wind adjusts door as the repair and maintenance of exhanst gas outlet
Road.
Under certain occasions, 9 afterburning of burner can be used to improve flue-gas temperature or directly heat steel scrap 3, ensure steel scrap
Material is preheating to certain temperature.
There are advantages below compared with prior art for the present embodiment：
1. high-temperature flue gas is introduced from furnace roof, extracted out from bottom of furnace body region, the local melting of steel scrap is located at upper strata flue gas
It near inlet, will not be bonded on furnace body, and smoke outlet is equipped with backgauge part, avoid that steel scrap can not fall shows
As；
2. furnace body and furnace bottom regular shape, simple in structure, manufacture easy to process；Intensity of hearth is high, and bearing capacity is strong, with stove
Body obturation effect is good；
3. inboard wall of furnace body or local interior wall reduce heat loss and cooling water amount, improve preheating furnace equipped with refractory material
The thermal efficiency, while furnace body is protected, extend its service life.
Embodiment 2：
As shown in figure 8, the schematic cross-section for full gas scrap steel preheating stove, is different from the first embodiment, heat smoke
It is provided by several combustion gas (such as coal gas or natural gas) burner 9 being arranged on bell, i.e. the smoke inlet 5 of first embodiment is changed to
The burner 9 of the present embodiment, 9 flame of burner directly heats steel scrap, and controls the preheating temperature of steel scrap；At this point, bell apply every
Outside the resistance to material of heat, using water cooling on shaft, this structure is suitble to anti-material to impact, and reduces the maintenance of shaft.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (6)
1. a kind of off-line type scrap steel preheating stove, it is characterised in that：Including fixed in position furnace body in a tubular form, removable closed or beat
Open the bell at the top of the furnace bottom and removable closed or opening furnace body of bottom of furnace body, the upper area setting of the bell or furnace body
There is smoke inlet, the lower area of the furnace body is provided with the exhanst gas outlet of oblique top；The bottom of furnace body is plane annular
Structure, the furnace bottom top are planar ring structure, form gap between the two, and furnace body is made to keep closed；It further includes and is arranged on
The mixed wind of exhanst gas outlet side wall adjusts door；Further include the fixation backgauge part for being fixed at smoke outlet.
2. a kind of off-line type scrap steel preheating stove according to claim 1, it is characterised in that：The furnace bottom is by being symmetrically hinged on
Two bearing material parts composition of bottom of furnace body, respectively rotate around the axis the operation realized and open and close furnace bottom.
3. a kind of off-line type scrap steel preheating stove according to claim 2, it is characterised in that：The bearing material part includes half-conical
Material bearing disc and two pivoted arms being symmetricly set on half-conical material bearing disc, the pivoted arm are located at the outer round surface where semicircle trimming
Near, and connect respectively with furnace body with shaft.
4. according to a kind of any off-line type scrap steel preheating stoves of claim 1-3, it is characterised in that：The furnace body, bell,
Furnace bottom, smoke inlet, exhanst gas outlet are both provided with water-cooling structure.
5. according to a kind of any off-line type scrap steel preheating stoves of claim 1-3, it is characterised in that：The furnace body, bell,
Refractory material is equipped on the inside of smoke inlet, exhanst gas outlet.
6. according to a kind of any off-line type scrap steel preheating stoves of claim 1-3, it is characterised in that：Exhanst gas outlet quantity is
Two or more, and around lower portion of furnace body area distribution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610594757.7A CN106052406B (en) | 2016-07-26 | 2016-07-26 | A kind of off-line type scrap steel preheating stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610594757.7A CN106052406B (en) | 2016-07-26 | 2016-07-26 | A kind of off-line type scrap steel preheating stove |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106052406A CN106052406A (en) | 2016-10-26 |
| CN106052406B true CN106052406B (en) | 2018-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610594757.7A Active CN106052406B (en) | 2016-07-26 | 2016-07-26 | A kind of off-line type scrap steel preheating stove |
Country Status (1)
| Country | Link |
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| CN (1) | CN106052406B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106524767B (en) * | 2016-12-30 | 2018-08-03 | 中冶赛迪工程技术股份有限公司 | A kind of cover-opening structure of scrap steel preheating type electric arc furnaces |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0225939B1 (en) * | 1985-12-20 | 1991-07-17 | MANNESMANN Aktiengesellschaft | Process for melting scrap or the like, and apparatus for performing the same |
| JPH11229024A (en) * | 1998-02-16 | 1999-08-24 | Daido Steel Co Ltd | Scrap preheating and charging device |
| JP2000199689A (en) * | 1999-01-04 | 2000-07-18 | Nippon Steel Corp | Method and tank for preheating scrap |
| CN102679734B (en) * | 2012-06-14 | 2014-08-06 | 杨东进 | Heating furnace with double furnace bodies |
| CN205825741U (en) * | 2016-07-26 | 2016-12-21 | 中冶赛迪工程技术股份有限公司 | A kind of off-line type scrap steel preheating stove |
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| CN106052406A (en) | 2016-10-26 |
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| C06 | Publication | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20201130 Address after: No.28 Shuguang Xili, Chaoyang District, Beijing 100028 Patentee after: China Metallurgical Industry Co., Ltd Address before: 400013 No. 1, Shuang Steel Road, Yuzhong District, Chongqing, China Patentee before: CISDI ENGINEERING Co.,Ltd. |
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| TR01 | Transfer of patent right |