CN201495230U - Liquid steel slag gas quenching and granulating device - Google Patents
Liquid steel slag gas quenching and granulating device Download PDFInfo
- Publication number
- CN201495230U CN201495230U CN200920104605XU CN200920104605U CN201495230U CN 201495230 U CN201495230 U CN 201495230U CN 200920104605X U CN200920104605X U CN 200920104605XU CN 200920104605 U CN200920104605 U CN 200920104605U CN 201495230 U CN201495230 U CN 201495230U
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- slag
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- 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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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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Abstract
The utility model relates to a liquid steel slag gas quenching and granulating device belongs to the technical field of metallurgical equipment, which solves the problems of granulating steel slag and recovering sensible heat of steel slag. The utility model adopts the technical scheme that the liquid steel slag gas quenching and granulating device comprises a closed granulating tank body, a crawler-type conveyor, a middle storage bin, a tundish and a tundish operation platform; a slag trough of the tundish is in sealed connection with a slag inlet of the granulating tank body; the crawler-type conveyor is positioned at the lower part in the granulating tank body; the middle storage bin is positioned at the lower part of the tail of the granulating tank body and butted with the granulating tank body in a sealed manner; a star-type discharging valve is arranged at the lower part of the middle storage bin; a gas-quenching gas nozzle is formed at the end part of the granulating tank body; a cooling gas outlet is formed at the head of the granulating tank body; and a cooling gas inlet is formed at the tail of the granulating tank body. The liquid steel slag gas quenching and granulating device is the closed device and utilizes inert gas to dry and granulate liquid steel slag; moreover, the processed slag particles are fine and even, elementary iron in the slag can not be oxidized, and the cooling gas and the slag particles carry out the reversible operation by flying, thereby improving the slag-gas heat exchange efficiency and facilitating the recovery of sensible heat of liquid slag.
Description
Technical field
The utility model relates to and a kind of liquid steel slag is carried out the gas device of granulation of quenching, and belongs to technical field of metallurgical equipment.
Background technology
Slag is the byproduct in the steelmaking process, and the liquid steel slag tapping temperature is at 1550～1650 ℃, and the hot 1.7GJ/t of physics is equivalent to about slag 60kg mark coal per ton, is the unique high-quality residual heat resources of not recycling of present iron and steel enterprise.The full iron amount of solid steel slag is 15%～28%, and wherein quite a few exists with the fe form, accounts for 8%～10% of total amount.Carry slag tailings behind the iron and also have very high mineral and be worth, main chemical compositions is CaO, SiO
2, FeO, MgO etc., be non-renewable mineral wealth.The comprehensive utilization of steel slag resource comprises that slag sensible heat, fe reclaim and the resource utilization of tailings.
In the slag sensible heat removal process, should be noted that the problem of two aspects.At first, slag and blast furnace slag all belong to the silicates system, contain vitreum (amorphous phase) and crystal.Slag formed the crystal phase when rate of cooling was low, and its chemically reactive is lower; Form glassy phase when cooling off fast, have the potential chemically reactive.Therefore, on the basis of metallurgical slag waste heat recovery, for the slag tailings is used for the slag Portland clinker, thereby improve its comprehensive utilization value, must adopt the mode of chilling to change into and form vitreum or amorphous phase in the solid phase process at melt cinder.Secondly, the thermal conductivity of slag and blast furnace slag is all relatively low, and 1400～1550 ℃ liquid phase stage, its thermal conductivity λ has only 0.1～0.3W/ (mK); The thermal conductivity λ of vitreum solid phase is 1～2W/ (mK); The thermal conductivity λ of crystal phase has only about 7W/ (mK), and this extracts to dross sensible heat has increased very big difficulty.
Therefore, no matter be that the sensible heat from slag reclaims, still from tailings comprehensive utilization angle, the dry granulation of liquid steel slag all is to handle the necessary technological process of liquid steel slag.At present; liquid towards slag or blast furnace slag carry out dry granulation and carry out technology that sensible heat reclaims mainly comprising centrifugal granulation method and the wind two kinds of technologies of method of quenching: (1) centrifugal granulation method: this method adopts the slightly recessed plate in the center of a high speed rotating as pelletizer; liquid slag is injected into the plate center by slag runner or pipeline; plate is rotation continuously under the drive of electric motor; when the plate speed of rotation reaches one regularly; melt cinder is because action of centrifugal force flies out the granulation granulating from the rim.Liquid slag particle carries out heat exchange to solidifying with air in flight course.Metallurgical slag after solidifying continues to drop to device bottom, establishes a fluidized-bed in the bottom, and the slag that solidifies in fluidized-bed further carries out heat exchange with air, warm air slave unit recovered overhead.(2) the wind method of quenching: this method is poured liquid steel slag into slag trough by slag ladle; it below the slag chute gas blower of granulation slag; when melt cinder flows out from slag chute is terminal; contact with the high-speed air flow of gas blower ejection; the rapid granulation of slag also is blown in the bell-type boiler; liquid slag is dripped by radiation and transmission of heat by convection and is carried out heat exchange in the process of flight, solidifies rapidly.Above-mentioned two kinds of methods, the centrifugal granulation method to the melt cinder granulation after slag particle be not easy to collect, connect in order to guarantee that slag particle is no longer glutinous after the granulation simultaneously, granulation jar diameter need be at 18～20m, therefore big, the layout that is not easy to carry out the granulation workshop of this granulation jar floor space, and the slag sensible heat is difficult for reclaiming; Pelletizing technology can reclaim the slag sensible heat although slag wind is quenched, and has problems such as the whole oxidations of fe in the slag, sensible heat organic efficiency are low.
If consider from the comprehensive utilization angle of liquid steel slag sensible heat, fe and tailings; liquid steel slag is handled at first will solve the problem of carrying out granulation under inert atmosphere; and grain diameter is more little after the granulation, and is just favourable more to the subsequent disposal of the recovery of sensible heat and iron and tailings.Certainly, if utilize rare gas element liquid towards slag to carry out granulation and cooling, must guarantee the stopping property of equipment.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of liquid steel slag gas granulating device of quenching; this device utilizes rare gas element liquid towards slag to carry out dry granulation under sealed state, can continuously liquid steel slag be granulated into 800～1000 ℃ solid-state slag particle.
The alleged problem of the utility model is solved by following technical scheme:
A kind of liquid steel slag gas granulating device of quenching; its special feature is: formation comprises airtight granulation jar body; the track type transfer roller; intermediate bunker; tundish and tundish service platform; the slag trough of described tundish and granulation jar body slag inlet are tightly connected; described track type transfer roller is positioned at the intrinsic bottom of granulation jar; described intermediate bunker is positioned at the bottom of granulation jar body afterbody; dock with the sealing of granulation jar body; be provided with star-like discharge valve in the intermediate bunker bottom; described granulation jar body end is provided with the gas gas jet of quenching; granulation jar body head is provided with the cooling gas outlet, and granulation jar body afterbody is provided with cooling gas inlet.
The above-mentioned liquid steel slag gas granulating device of quenching; described granulation jar body top is arch; granulation jar body head cross section is top arch, middle and lower part rectangle; granulation jar body middle part and afterbody cross section are that top arch, middle part rectangle, bottom are trapezoidal; it is corresponding with the crawler belt of track type transfer roller that it falls trapezoidal end opening; described cooling gas outlet is two; their balanced configurations are in granulation jar body head side wall; described cooling gas inlet is two, and their balanced configurations are at granulation jar body afterbody sidewall.
The above-mentioned liquid steel slag gas granulating device of quenching, described tundish is positioned on the orbit of tundish service platform, and tundish one end connects fluid pressure drive device, and described tundish and granulation jar body slag inlet junction are provided with sealing plate.
The above-mentioned liquid steel slag gas granulating device of quenching, described granulation jar body head downside is provided with clean-out door.
The utility model belongs to liquid steel slag dry granulation equipment, the water resources that consumes in saving a large amount of wet processing processes simultaneously, to compare principal feature as follows with existing steel slag dry method granulation technique: 1. the utility model is a closed unit, in realizing rare gas element liquid towards steel slag dry method granulating, fe can oxidation in the slag, improve the economic benefit of slag treatment process, reduced dust pollution simultaneously, reduced the release of a large amount of steam in the Water Quenching process; 2. the slag particle after adopting this device to handle tiny (＜3mm) and evenly, improved slag-gas heat exchange rate, be beneficial to slag iron and separate, reduce the energy that slag will consume because of operations such as fragmentation, screenings in the slag post-processed process that generally adopts at present; 3. this device enters the inlet mouth of low temperature rare gas element from granulation jar afterbody, and venting port is discharged from the head, realizes cooling gas and slag particle flight antikinesis, when improving slag-gas heat exchange efficiency, improves Outlet Gas Temperature, helps the melt cinder sensible heat and reclaims.
Description of drawings
Fig. 1 is the utility model synoptic diagram;
Fig. 2 is the A-A sectional drawing of Fig. 1;
Fig. 3 is the B-B sectional drawing of Fig. 1;
Fig. 4 is the tundish synoptic diagram;
Fig. 5 is the vertical view of Fig. 4.
Label is expressed as follows in the accompanying drawing: 1. star-like discharge valve; 2. intermediate bunker; 3. track type transfer roller; 4. granulation jar body; 5. cooling gas inlet; 6. cooling gas outlet; 7. the gas gas jet of quenching; 8. tundish, 8-1. tundish slag trough; 8-2. sealing plate; 9. fluid pressure drive device; 10. tundish service platform; 10-1. orbit, 11. clean-out doors.
Embodiment
Referring to Fig. 1, the utility model formation comprises airtight granulation jar body 4, track type transfer roller 3, intermediate bunker 2, tundish 8 and tundish service platform 10.Granulation jar body is supported by steelframe, and granulation jar body wall is box hat, fire-retardent fiber felt-rug and heat resisting brick three-decker, and the slag trough 8-1 of tundish 8 and granulation jar body slag inlet are tightly connected, and liquid steel slag enters granulation jar body interior by tundish through slag trough.The track type transfer roller is positioned at the intrinsic bottom of granulation jar, and intermediate bunker is positioned at the bottom of granulation jar body afterbody, and feed bin is suitable for reading to be docked with the sealing of granulation jar body, is provided with star-like discharge valve 1 in the intermediate bunker bottom.Granulation jar body slag input end is provided with the gas gas jet 7 of quenching, and granulation jar body head is provided with cooling gas outlet 6, and granulation jar body afterbody is provided with cooling gas inlet 5.
Referring to Fig. 1-3; granulation jar body 4 tops are arch; granulation jar body head cross section is top arch, middle and lower part rectangle, and granulation jar body middle part and afterbody cross section are that top arch, middle part rectangle, bottom are trapezoidal, and it is corresponding with the crawler belt of track type transfer roller that it falls trapezoidal end opening.Described cooling gas outlet 6 is two, and their balanced configurations are in granulation jar body head side wall, and described cooling gas inlet 5 also is two, and their balanced configurations are in granulation jar body afterbody side-walls.Granulation jar body head downside is provided with clean-out door 11, is used to clear up the slag that becomes scattered about granulation can portion.
Referring to Fig. 1, Fig. 4, Fig. 5, tundish 8 is positioned on the orbit 10-1 of tundish service platform 10, and tundish one end connects fluid pressure drive device 9, and tundish and granulation jar slag inlet junction are provided with sealing plate 8-2.Fluid pressure drive device is used to drive tundish along the operation guide rail movement, and when advancing tundish to advance to limit position, the pressure of hydraulic efficiency installation can guarantee being tightly connected between tundish sealing plate 8-2 and the granulation jar slag inlet.
The utility model working process is as follows: slag ladle is transported to after slag strides; utilize overhead traveling crane that slag ladle is winched to tundish 8 tops; start nitrogen pressure equipment; with high pressure nitrogen through gas gas jet 7 ejection of quenching; form the high speed nitrogen jet current; start the low temperature nitrogen recycle unit; cool nitrogen enters granulation jar body by the cooling gas inlet 5 that is positioned at cooling tank body afterbody; cooling gas outlet 6 motions to granulation can portion; its direction of motion is opposite with the traffic direction that liquid slag is dripped, and forms countercurrent flow, when improving slag-gas heat exchange efficiency; improve Outlet Gas Temperature, create conditions for the melt cinder sensible heat reclaims.Topple over liquid steel slag afterwards to tundish; liquid steel slag forms stable slag stream through the slag trough 8-1 of tundish; directly enter high speed nitrogen jet current zone after the decline; the liquid steel slag liquid slag that is granulated into less than 3mm that is crashed to pieces is dripped; liquid slag is dripped cooling fast under the effect of low temperature nitrogen jet and countercurrent flow nitrogen in the flight course; slag drips surface cure shape shell, can not bond when falling to granulation jar body lower bottom part.Solid-state slag particle tumbles to the track surface of track type transfer roller 3 naturally at granulation jar body middle part and afterbody, and the track type transfer roller is delivered to the intermediate bunker 2 that is positioned at granulation jar afterbody with slag particle, and by star-like discharge valve 1 sealing discharging of intermediate bunker bottom connection.
Claims (4)
1. liquid steel slag gas granulating device of quenching; it is characterized in that: formation comprises airtight granulation jar body (4); track type transfer roller (3); intermediate bunker (2); tundish (8) and tundish service platform (10); the slag trough of described tundish (8-1) is tightly connected with granulation jar body slag inlet; described track type transfer roller is positioned at the intrinsic bottom of granulation jar; described intermediate bunker is positioned at the bottom of granulation jar body afterbody; dock with the sealing of granulation jar body; be provided with star-like discharge valve (1) in the intermediate bunker bottom; described granulation jar body end is provided with the gas gas jet (7) of quenching; granulation jar body head is provided with cooling gas outlet (6), and granulation jar body afterbody is provided with cooling gas inlet (5).
2. the liquid steel slag gas according to claim 1 granulating device of quenching; it is characterized in that: described granulation jar body (4) top is arch; granulation jar body head cross section is the top arch; the middle and lower part rectangle; granulation jar body middle part and afterbody cross section are the top arch; the middle part rectangle; the bottom is trapezoidal; it is corresponding with the crawler belt of track type transfer roller that it falls trapezoidal end opening; described cooling gas outlet (6) is two; their balanced configurations are in granulation jar body head side wall; described cooling gas inlet (5) is two, and their balanced configurations are at granulation jar body afterbody sidewall.
3. the liquid steel slag gas according to claim 1 and 2 granulating device of quenching; it is characterized in that: described tundish (8) is positioned on the orbit (10-1) of tundish service platform (10), and tundish one end connects the described tundish of fluid pressure drive device (9) and granulation jar body slag inlet junction is provided with sealing plate (8-2).
4. the liquid steel slag gas according to claim 3 granulating device of quenching, it is characterized in that: described granulation jar body head downside is provided with clean-out door (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920104605XU CN201495230U (en) | 2009-09-10 | 2009-09-10 | Liquid steel slag gas quenching and granulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920104605XU CN201495230U (en) | 2009-09-10 | 2009-09-10 | Liquid steel slag gas quenching and granulating device |
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| Publication Number | Publication Date |
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| CN201495230U true CN201495230U (en) | 2010-06-02 |
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| CN200920104605XU Expired - Fee Related CN201495230U (en) | 2009-09-10 | 2009-09-10 | Liquid steel slag gas quenching and granulating device |
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| CN (1) | CN201495230U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871025A (en) * | 2010-06-24 | 2010-10-27 | 陈瑞颖 | Metallurgical molten slag dry-type processing device and processing method thereof |
| WO2011160551A1 (en) * | 2010-06-24 | 2011-12-29 | 北京神风创新热能技术有限公司 | Apparatus and method for dry treating metallurgical molten slag |
| CN102974269A (en) * | 2012-12-12 | 2013-03-20 | 长沙凯瑞重工机械有限公司 | Dry type granulating system for sulfonium |
| CN103710479A (en) * | 2014-01-17 | 2014-04-09 | 中冶华天工程技术有限公司 | Steel slag water quenching treatment system |
| CN111363869A (en) * | 2020-04-17 | 2020-07-03 | 一重集团大连工程技术有限公司 | Steel slag dry processing equipment |
| US10703675B2 (en) * | 2013-09-02 | 2020-07-07 | Loesche Gmbh | Method for processing steel slag and hydraulic mineral binder |
| CN113430307A (en) * | 2021-06-04 | 2021-09-24 | 刘春茗 | Liquid steel slag dry processing device and working mode thereof |
| CN115491445A (en) * | 2022-09-01 | 2022-12-20 | 刘春茗 | Liquid steel slag dry-process quenching and tempering equipment and quenching and tempering method thereof |
-
2009
- 2009-09-10 CN CN200920104605XU patent/CN201495230U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871025A (en) * | 2010-06-24 | 2010-10-27 | 陈瑞颖 | Metallurgical molten slag dry-type processing device and processing method thereof |
| WO2011160551A1 (en) * | 2010-06-24 | 2011-12-29 | 北京神风创新热能技术有限公司 | Apparatus and method for dry treating metallurgical molten slag |
| CN102974269A (en) * | 2012-12-12 | 2013-03-20 | 长沙凯瑞重工机械有限公司 | Dry type granulating system for sulfonium |
| US10703675B2 (en) * | 2013-09-02 | 2020-07-07 | Loesche Gmbh | Method for processing steel slag and hydraulic mineral binder |
| CN103710479A (en) * | 2014-01-17 | 2014-04-09 | 中冶华天工程技术有限公司 | Steel slag water quenching treatment system |
| CN103710479B (en) * | 2014-01-17 | 2016-05-18 | 中冶华天工程技术有限公司 | Steel slag water quenching treatment system |
| CN111363869A (en) * | 2020-04-17 | 2020-07-03 | 一重集团大连工程技术有限公司 | Steel slag dry processing equipment |
| CN111363869B (en) * | 2020-04-17 | 2021-11-09 | 一重集团大连工程技术有限公司 | Steel slag dry processing equipment |
| CN113430307A (en) * | 2021-06-04 | 2021-09-24 | 刘春茗 | Liquid steel slag dry processing device and working mode thereof |
| CN113430307B (en) * | 2021-06-04 | 2022-08-19 | 刘春茗 | Liquid steel slag dry processing device and working mode thereof |
| CN115491445A (en) * | 2022-09-01 | 2022-12-20 | 刘春茗 | Liquid steel slag dry-process quenching and tempering equipment and quenching and tempering method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: TANGSHAN IRON AND STEEL GROUP CO., LTD. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhang Yuzhu Inventor after: Li Jianxin Inventor after: Li Junguo Inventor after: Han Zhijie Inventor after: Xing Hongwei Inventor after: Hu Changqing Inventor after: Long Yue Inventor after: Gao Yunwang Inventor before: Zhang Yuzhu Inventor before: Li Junguo Inventor before: Han Zhijie Inventor before: Xing Hongwei Inventor before: Hu Changqing Inventor before: Long Yue |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHANG YUZHU LI JUNGUO HAN ZHIJIE XING HONGWEI HU ZHANGQING LONG YUE TO: ZHANG YUZHU LI JIANXIN LI JUNGUO HAN ZHIJIE XING HONGWEI HU ZHANGQING LONG YUE GAO YUNWANG |
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| TR01 | Transfer of patent right |
Effective date of registration: 20101126 Address after: 063009 Hebei province Tangshan City Xinhua West Road No. 46 Hebei Polytechnic University Co-patentee after: Tangshan Iron and Steel Group Co., Ltd. Patentee after: Hebei Univ. of Science & Technology Address before: 063009 Hebei province Tangshan City Xinhua West Road No. 46 Hebei Polytechnic University Patentee before: Hebei Univ. of Science & Technology |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100602 Termination date: 20100910 |