CN105624345B - A kind of method for realizing that liquid steel slag High Efficiency Thermal is vexed - Google Patents
A kind of method for realizing that liquid steel slag High Efficiency Thermal is vexed Download PDFInfo
- Publication number
- CN105624345B CN105624345B CN201511011220.5A CN201511011220A CN105624345B CN 105624345 B CN105624345 B CN 105624345B CN 201511011220 A CN201511011220 A CN 201511011220A CN 105624345 B CN105624345 B CN 105624345B
- Authority
- CN
- China
- Prior art keywords
- slag
- temperature
- vexed
- steel slag
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention discloses a kind of method for realizing that liquid steel slag High Efficiency Thermal is vexed, this method carries out cooling of fetching water to high-temperature steel slag using the intelligent robot for being provided with infrared temperature measurement gun, and the temperature range of described high-temperature steel slag is 1100 ~ 900 DEG C；Poured into slag bath after described red heat state high-temperature steel slag, robot persistently carries out water spray operation according to ultrared temperature-measuring results to slag, untill the need for the temperature of slag reaches that satisfaction heat is vexed.The inventive method can realize cooling operation of being fetched water to high-temperature steel slag, improve hot vexed slag operating efficiency.
Description
Technical field
Realize that continuing spray cooling reaches the vexed technology of High Efficiency Thermal, particularly one the present invention relates to converter liquid steel slag
Plant and realize the vexed method of liquid steel slag High Efficiency Thermal.
Background technology
The technical process of the vexed slag of heat is：After converter is slagged tap, slag ladle contains converter liquid steel slag, canned converter liquid steel slag
（Either temperature is more than 300 DEG C of solid steel slag）, vexed pit is hung to crane and is tumbled deslagging（Sometimes also use automobile roping
High-temperature steel slag dumps directly into vexed pit）.A high-temperature steel slag is often poured into, progress of manually fetching water cools to less than 800 DEG C, so
After pour into next tank slag.When the slag in vexed pit, which is met, to be required（Top free space is in more than 500mm）, cover vexed pit
Lid, spray water vexed 8 ~ 12h of Slag treatment.After vexed Slag treatment, slag is cooled to 50 DEG C or so, slings vexed pit lid, is hung using driving
Electromagnetic disc carries out the bulk iron in steel slag magnetically dressing, is grabbed slag to automobile with excavator and transported, or directly grabbed into belt feeder system
Progress selects iron to handle.In this course, occur following physics chemical action, realize the hot vexed purpose of slag：
1st, the liquid steel slag of high temperature, solid steel slag are poured into after hot vexed slag slag bath, and usage mining machine carries out spreading out and putting on operation,
This process so that the slag of red heat state is exposed in atmosphere, rapid cooling.This process, because temperature is reduced, in slag
Various mineral tissues, successively solidify according to the height of fusing point and separate out, the heterogeneous body characteristic of slag causes these clinker crystal knots
The change of volume, slag fragmentation occur for structure, it is to avoid clinker crystal grows up and be densified under the condition of high temperature so that many height
Warm slag is unlikely to be grown to serve as bulk one by one, the follow-up hot vexed program of fetching water of influence.
2nd, start after fetching water, under the conditions of high-temperature steel slag chilling, meet and produced between the top slag temperature reduction of water, slag crystal
Raw huge stress.When the slag surface of heat is acted on by the chilling of water, top layer will shrink, and the contraction of internal slag does not have
There is top layer so big, so that the contraction of top layer slag is hindered.That is, slag top layer will be arranged by internal slag
Repulsion, and inside slag will by top layer slag pressure, stress is then produced inside slag.It is this to be answered caused by the temperature difference
Power is bigger, more easily makes slag distortion crushing.
3rd, lasting cooling of fetching water so that thermally stressed in hot vexed hole and transformation stress the double influence of slag.Heat
The temperature difference in vexed slag pit between slag muck top layer and inside further increases, so that producing thermal stress changes slag form, together
Shi Qianre material produces phase transformation, and heat release and the change of volume are frequently accompanied by during the stress of phase transformation so that slag continues to rupture.
Typically tricalcium silicate changes to dicalcium silicate, and has the precipitation of free calcium oxide.
4th, decatize.High-temperature steel slag produces substantial amounts of supersaturated vapor when meeting water, and temperature is more than 105 DEG C, and pressure exists
More than 0.24kPa, and diffusion, infiltration into the slag gap of fragmentation so that slag is in the environment of saturated vapor.High temperature
The temperature of slag continues to reduce, and the stress between slag crystal is constantly produced, and it is loose that bulk slag continues fragmentation.
5th, slag is under saturated vapor environment, and with f-CaO, f-MgO in slag following reaction occurs for saturated vapor：
The volumetric expansions 97.8% of f-CaO+H2O → Ca (OH) 2
The volumetric expansions 148% of f-MgO+H2O → Mg (OH) 2
So according to steel slag hot disintegrating technological requirement, when each vexed pond of tank high-temperature liquid state slag stacked heat, this before capping
In one stage, it is required to manually carry out hot vexed slag surface uniform operation completion chilling of fetching water, steel slag hot disintegrating is from slag input to use of slagging tap
When about 15-17 hours, the control of hot vexed pond slag input temperature, the control of water of manually fetching water and heat it is vexed go out qualified slag have directly
Relation.
Consulting literatures（1）Yu Haiming, Wang Qiang write, and are published in December, 2015 in metallurgical industry publishing house《At slag
Reason and comprehensive utilization》Have between one book " is a kind of using water spray chilling high-temperature steel slag or liquid steel slag during steel slag hot disintegrating
The content statement of the process of effective temperature-reducing "；（2）Wang Xiangfeng, Yu Shujuan, Hou Hongyu et al. were in 2011 year fifth phase《Saddle
Steel technology》Have that " Anshan iron and steel plant our department is always in the middle of entitled " the Anshan iron and steel plant hot melt Technologies of Steel Slag Treatment progress " paper published on magazine
Using hot splashing steel slag handling process, i.e., first each tank slag is sprinkled into slag bath, fetches water to be cooled to surface blackening and have no steam and emerge,
Next tank slag circulate operation is sprinkled again full to slag bath, then cover vexed slag lid and concentrate after the 2h that fetches water, then carry out vexed slag 24h, allow slag
Bulk steel, is sent at steel scrap by natural degradation afterwards, and remaining granular material transports slag company to and prepares magnetic separation processing." content
Statement.（3）Zeng Qingguo, Han Jianhuai et al. are in 2011 in the 2nd phase《It is modern metallurgical》Entitled " the steel slag hot announced on magazine
Have in the middle of development and application of the vexed technology in Huaihe River steel " paper and " after the vexed hole liquid steel slag of falling people of heat, excavate to stir above and below head and stir
Artificial water-spraying control after loose slag, this end-of-job, becomes after dark red depending on loose slag surface color in hole, then people the
The content statement of two slag ladles, with this reciprocating operation ".
It can be seen from literature search above and the on-the-spot investigation of inventor, the whole nation is made using the steel mill of hot vexed slag technique
During hot vexed PROCESS FOR TREATMENT converter slag, water rate control of manually fetching water is complete by rule of thumb, water is controlled by ocular estimate, manually
Operation of fetching water is to have high-pressure rubber pipe dispensing device for water in arms by hot vexed work, is stood in hot vexed pool side, and red slag is fetched water in opposite pond, operation
When there are many potential safety hazards such as high temperature is scorched, steam is scalded.It is that the hot vexed slag of influence is made so can not be fetched water to the slag of high temperature
One of key factor of industry efficiency.
The content of the invention
It is an object of the invention to provide a kind of method for realizing that liquid steel slag High Efficiency Thermal is vexed, it can realize to high-temperature steel slag
Fetch water cooling operation, improve hot vexed slag operating efficiency.
The object of the present invention is achieved like this, a kind of method for realizing that liquid steel slag High Efficiency Thermal is vexed, and this method is using peace
Intelligent robot equipped with infrared temperature measurement gun carries out cooling of fetching water to high-temperature steel slag, and the temperature range of described high-temperature steel slag is
1100~900℃；Poured into slag bath after described red heat state high-temperature steel slag, robot is held according to ultrared temperature-measuring results
It is continuous that water spray operation is carried out to slag, untill the need for the temperature of slag reaches that satisfaction heat is vexed.
The innovative point of invention is based on following 2 points：
1st, the main petrofacies compound dicalcium silicate in the middle of converter high-temperature steel slag, the interval range of chilling temperature passes through 1100
During ~ 900 DEG C of intervals, α-C2S, β-C2S takes place to γ-C2S phase transformation, now volumetric expansion 10% ~ 12%, so that at first
The clinker key component dicalcium silicate efflorescence of crystallization.Water spray operation can improve the pulverization rate of high-temperature steel slag faster, reduce steel
The cooling down time of slag.
2nd, using intelligent robot substitute manually fetch water, i.e., robot lever arm front end installation spiral nozzle, it is necessary to
Lever arm is turned into vexed pond center using straighforward operation during water spray, water valve is opened and realizes operation of fetching water, safety can be reduced hidden
Suffer from, realize the quick purpose cooled to slag of automation.Cooling the injection flow rate regulation fetched water can be by installed in intelligence
Infrared temperature measurement gun in robot carries out temperature control regulation.I.e. high-temperature steel slag is fetched water using larger injection flow rate, slag temperature
It is corresponding after degree reduction to reduce injection flow rate.
Inventor has found, if rapidly sprayed water to red heat state or liquid steel slag, the steel of liquid steel slag or red heat state
The phase velocity of slag is accelerated, and can be significantly shorter the hot vexed duty cycle of hot vexed slag, the potential safety hazard for operation of fetching water can disappear
Remove, so inventor employs the robot with infrared thermometry for the liquid steel slag or red heat state in hot vexed slag bath
Slag carries out lasting water spray, now water later optimal for the cooling effect of high-temperature steel slag, can be significantly shorter steel
In the hot vexed cycle of slag, improve hot vexed slag operating efficiency.
Intelligent robot water supply system of the present invention can carry out continual cooling of fetching water for high-temperature steel slag, realize people
Work is fetched water operation automation, it is no longer necessary to which personnel closely operate, and not only reduce labor intensity, improve labor productivity,
It is also greatly reduced the danger that hot vexed work is directly operated at the scene.High-temperature steel slag is carried out after water-spraying control, what water vapor was taken away
Heat is also the process procedure for being easiest to optimize steel slag hot disintegrating effect at most, and the effect of the C2S transformations in the middle of converter slag is most
It is good, hot 30~150min of vexed Slag treatment cycle can be shortened, direct economic benefit is notable.
Embodiment：
It is provided with a kind of method for realizing that liquid steel slag High Efficiency Thermal is vexed, the factory building of vexed 800,000 tons of the slag of processing of slag factory heat
The vexed slag slag bath of 12 heat, this method carries out drop of fetching water using the intelligent robot for being provided with infrared temperature measurement gun to high-temperature steel slag
Temperature, the temperature range of described high-temperature steel slag is 1100 ~ 900 DEG C；Poured into slag bath after described red heat state high-temperature steel slag,
Robot persistently carries out water spray operation according to ultrared temperature-measuring results to slag, until the temperature of slag reaches that satisfaction heat is vexed
The need for untill.The cooling operation of persistently fetching water at high operating temperatures to hot vexed pond is realized, hot vexed slag operating efficiency is improved.
Claims (1)
1. a kind of method for realizing that liquid steel slag High Efficiency Thermal is vexed, it is characterised in that this method uses and is provided with infrared temperature measurement gun
Intelligent robot carries out cooling of fetching water to high-temperature steel slag, and the temperature range of described high-temperature steel slag is 1100 ~ 900 DEG C；To slag bath
Poured into son after described red heat state high-temperature steel slag, robot persistently sprays water according to ultrared temperature-measuring results to slag
Operation, untill the need for the temperature of slag reaches that satisfaction heat is vexed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511011220.5A CN105624345B (en) | 2015-12-30 | 2015-12-30 | A kind of method for realizing that liquid steel slag High Efficiency Thermal is vexed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511011220.5A CN105624345B (en) | 2015-12-30 | 2015-12-30 | A kind of method for realizing that liquid steel slag High Efficiency Thermal is vexed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105624345A CN105624345A (en) | 2016-06-01 |
| CN105624345B true CN105624345B (en) | 2017-08-22 |
Family
ID=56039687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511011220.5A Active CN105624345B (en) | 2015-12-30 | 2015-12-30 | A kind of method for realizing that liquid steel slag High Efficiency Thermal is vexed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105624345B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521055B (en) * | 2016-12-09 | 2019-02-26 | 武钢集团昆明钢铁股份有限公司 | A kind of steel slag hair wastes method |
| CN108239684A (en) * | 2017-12-08 | 2018-07-03 | 河北新烨工程技术有限公司 | A kind of converter slag New Process for Treatment |
| CN111826486B (en) * | 2020-08-03 | 2023-10-20 | 中冶节能环保有限责任公司 | High-temperature soft molten steel slag accurate control efficient clean crushing treatment device and method |
| CN112746139B (en) * | 2021-01-01 | 2022-07-05 | 新疆互力佳源环保科技有限公司 | Method for cooperatively treating waste lead-acid storage battery by using liquid steel slag |
| CN113943840B (en) * | 2021-10-19 | 2022-12-30 | 新疆八一钢铁股份有限公司 | Low-emission treatment method for steel-making metallurgical steel slag |
| CN114292039B (en) * | 2021-10-28 | 2023-02-28 | 包头市鹿城路桥工程有限公司 | Steel slag reprocessing method for asphalt concrete |
| CN114214472A (en) * | 2021-11-26 | 2022-03-22 | 凉山瑞京环保资源开发有限公司 | Steel slag covering type hot-disintegrating treatment method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280346B (en) * | 2008-05-30 | 2010-06-02 | 冀更新 | Hot disintegration method for converter steel slag |
| CN101724720B (en) * | 2008-10-31 | 2012-09-05 | 鞍山钢铁集团公司 | Method for processing liquid molten steel slag of converter by means of hot processing |
| CN102534068A (en) * | 2012-01-30 | 2012-07-04 | 山西太钢不锈钢股份有限公司 | Method for reusing common steel slag |
| CN103014200B (en) * | 2012-03-27 | 2014-05-28 | 新疆八一钢铁股份有限公司 | Process applicable to transfer of molten steel slag of converter and optimization of treatment of hot smouldering slag |
-
2015
- 2015-12-30 CN CN201511011220.5A patent/CN105624345B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105624345A (en) | 2016-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105624345B (en) | A kind of method for realizing that liquid steel slag High Efficiency Thermal is vexed | |
| CN103194565B (en) | Method for synchronously dephosphorization and vanadium extraction of vanadium-containing molten iron | |
| CN105063255B (en) | A kind of vertical slag has pressure hot vexed still kettle and process for treating steel slag | |
| CN102230036A (en) | Waste-heat pressure closed-loop thermal treatment method for molten steel slag | |
| CN102345057A (en) | High strength and toughness Q460E structural steel thick plate and production method thereof | |
| CN102041444A (en) | Low-carbon low-silicon high-quality carbon structural steel and production method thereof | |
| CN105385931A (en) | Method for smelting high-nitrogen steel at normal pressure by two steps | |
| CN106222341B (en) | A kind of stainless steel slag slow cooling processing unit | |
| CN100569959C (en) | A kind of hot disintegration method for molten steel slag | |
| CN102367544A (en) | High strength and toughness structural steel S355K2Z35 slab and production method thereof | |
| CN106319333B (en) | A kind of smelting process of high strength steel v n micro alloying | |
| CN103276123A (en) | Method for cooling stainless steel slag | |
| CN103205536A (en) | Semi-steel dephosphorizing agent and semi-steel dephosphorizing method | |
| CN103014200B (en) | Process applicable to transfer of molten steel slag of converter and optimization of treatment of hot smouldering slag | |
| CN106119459A (en) | Oxygen top-blown converter stays the dephosphorization method of slag | |
| CN206052061U (en) | A kind of stainless steel slag slow cooling processing meanss | |
| CN102732653A (en) | Solid-liquid steel slag mixing thermal-braising processing technology | |
| CN101736121A (en) | Method for smelting 07Cr2MoW2VNbB steel in electric furnace and using same to form round pipe billets through horizontal continuous casting | |
| Yang et al. | Investigation on non-metallic inclusions in LCAK steel produced by BOF-LF-FTSC production route | |
| CN108955283A (en) | Steel slag Exposure degree electrification technique and system | |
| CN105290345A (en) | Treatment method for steel ladle casting remaining liquid steel | |
| CN106222357B (en) | A kind of method of the low-phosphorous half steel of vanadium-bearing hot metal converter producing | |
| CN108913826A (en) | A method of f-CaO in the stewing resolution steel slag of immersion heat | |
| CN106244898B (en) | A kind of production method of Low-phosphorus Steel | |
| CN102605117A (en) | Steel slag hot-integrating slag ladle provided with stirring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180717 Address after: 830022 No. 1 Bayi Road, Toutun River District, Urumqi, the Xinjiang Uygur Autonomous Region Patentee after: Xinjiang Bayi Iron & Steel Co., Ltd. Address before: 830022 No. 1 Bayi Road, Toutun River District, Urumqi, the Xinjiang Uygur Autonomous Region Patentee before: Baosteel Group Xinjiang Bayi Iron & Steel Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190129 Address after: Room 305, Room No. 372, Bayi Road, Toutunhe District, Urumqi City, Xinjiang Uygur Autonomous Region, 830026 Patentee after: Xinjiang Huli Jiayuan Environmental Technology Co. Ltd. Address before: 830022 No. 1 Bayi Road, Toutun River District, Urumqi, the Xinjiang Uygur Autonomous Region Patentee before: Xinjiang Bayi Iron & Steel Co., Ltd. |