CN107267698A - A kind of Processes and apparatus for handling blast furnace slag - Google Patents
A kind of Processes and apparatus for handling blast furnace slag Download PDFInfo
- Publication number
- CN107267698A CN107267698A CN201710280786.0A CN201710280786A CN107267698A CN 107267698 A CN107267698 A CN 107267698A CN 201710280786 A CN201710280786 A CN 201710280786A CN 107267698 A CN107267698 A CN 107267698A
- Authority
- CN
- China
- Prior art keywords
- blast furnace
- slag
- furnace slag
- dolly
- waste heat
- 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.)
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Classifications
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- 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
-
- 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
- C21B3/08—Cooling 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Furnace Details (AREA)
Abstract
A kind of Processes and apparatus for handling blast furnace slag, is related to the blast furnace slag process field of blast furnace ironmaking generation, and concrete operation step is：Molten blast furnace slag flows into slag by slag runner and filled after dolly, slag fills dolly and marched to above spraying system, after control system checks that the position of slag filling dolly is errorless, temperature flows out into blast furnace slag cooler for 1350 DEG C 1450 DEG C of molten blast furnace slag, molten state blast furnace slag is crushed under the impact of spraying system gases at high pressure, and cooled down and collected, the high temperature blast furnace solid impurity particle after cooling enters after waste heat boiler cooling, and cold conditions blast furnace solid impurity particle is transported systematic collection transhipment；The present invention can not only reclaim to high-quality blast furnace slag waste heat, and not consumption of new water, not to air discharge of noxious gases, reduce pollutant emission, improve working environment.
Description
Technical field
The present invention relates to the blast furnace slag process field that blast furnace ironmaking is produced, more particularly, to a kind of technique for handling blast furnace slag
And equipment.
Background technology
Known, blast furnace slag is one of principal by product produced by blast furnace ironmaking production process, and often producing the 1t pig iron will
By-product 0.3~0.6t blast furnace slags, its own temperature is higher, reaches 1350 DEG C -1450 DEG C or so, heat content is enriched.Height per ton
Clinker about contains（1.26~1.88）×106KJ sensible heat, equivalent to 45-60kg standard coals.Blast furnace cinder waste heat has grade
It is high, the characteristics of quantity is big.It is essentially all using flush slag technique both at home and abroad at present（Yin Bafa, bottom filter method, Lhasa method, Tula
Method and HK methods）Blast furnace slag is handled, this method waste heat recovery rate is very low, and there is many drawbacks：
（1）The high-quality residual heat resources contained by blast furnace slag are wasted, 1350 DEG C -1450 DEG C of liquid blast-furnace slag is by slag notch
Discharge, is granulated and is cooled down by water under high pressure.At such high temperatures, most aqueous water is gasificated into rapidly vapor row
It is put into air, wastes amount of heat；
（2）Hydraulic pressure is more than 0.2MPa during wasting great lot of water resources, flush slag, and the ratio between pulp water is 1:1, slag per ton need to be consumed
Consume new 0.8~1.2 ton of water.Global 1,100,000,000 tons of pig iron yield in 2012, wherein Chinese blase furnace cast iron yield is 6.5 hundred million tons, it is annual
About 2.5 hundred million tons of blast furnace slag yield, for about 200,000,000 tons of the new water consumption of Water Quenching Slag, water resources consumption is especially serious.
（3）Water cooling blast furnace slag can produce SO2And H2The pernicious gases such as S, pollute environment.
In view of the above-mentioned problems, under the situation of steel industry production capacity surplus, needing to be needed one kind efficiently to reclaim height
Afterheat of slags, non-consumption of new water, not to air discharge of noxious gases, reduce pollutant emission blast furnace residues processing technique and set
It is standby.
The content of the invention
In order to overcome the shortcomings of in background technology, the invention discloses a kind of Processes and apparatus for handling blast furnace slag.
In order to realize the goal of the invention, the present invention is adopted the following technical scheme that：
A kind of technique for handling blast furnace slag, concrete operations comprise the following steps：
A, send instruction by control system, slag fills dolly and enters operation preparatory position, and molten blast furnace slag flows into slag by slag runner and fills small
Car；
B, slag fill dolly and filled after molten blast furnace slag, and control system sends instruction, and slag fills dolly and marched to above spraying system, together
When control system send the power supply that spraying system is opened in instruction, spraying system enters readiness for operation；
After c, control system check that the position of slag filling dolly is errorless, the plug rod mechanism below instruction unpack slag filling dolly, temperature are sent
The molten blast furnace slag spent for 1350 DEG C -1450 DEG C flows out into blast furnace slag cooler；
D, molten state blast furnace slag are broken rapidly under the impact of spraying system gases at high pressure in blast furnace slag cooler by high velocity air
It is broken, so as to be fractured into 4-6mm high-temperature solid blast furnace solid impurity particle, and cooled down and collected in blast furnace slag cooler；
High temperature blast furnace solid impurity particle after e, cooling enters waste heat boiler, and waste heat boiler is then by the waste heat of high-temperature solid blast furnace solid impurity particle
Reclaim, and produce medium pressure steam, high temperature blast furnace solid impurity particle is cooled in waste heat boiler, control system detection solid-state blast furnace
Solid impurity particle temperature, its temperature is discharged when reaching at 180 DEG C, and cold conditions blast furnace solid impurity particle is transported systematic collection transhipment；
F, after slag fills small in-car whole blast furnace slags outflow, control system sends instruction, makes slag fill dolly return, then fills again
Full blast furnace slag, repeats b-e processes.
In the technique of described processing blast furnace slag, step d, the temperature cooled down in blast furnace slag cooler is 800 DEG C -900
℃。
In the technique of described processing blast furnace slag, step e, medium pressure steam is 450 DEG C, 3.82Mpa, the middle middle benefit gas
Pressure steam may be incorporated into steam pipe system, it can also be used to which afterheat generating system ahead turbine generates electricity.
A kind of equipment for handling blast furnace slag, including spraying system, blast furnace slag cooler, waste heat boiler and control system,
The top of spraying system fills dolly provided with slag, and slag fills small in-car molten blast furnace slag and sends into blast furnace slag cooler by spraying system
It is interior, water-cooling wall is provided with blast furnace slag cooler, the import of the slag notch and waste heat boiler of blast furnace slag cooler is connected, the control
System processed fills dolly, spraying system, blast furnace slag cooler, waste heat boiler with slag respectively and is connected by signal.
The equipment of described processing blast furnace slag, the slag fills dolly and sets in orbit, in orbit provided with position detection
Device.
The equipment of described processing blast furnace slag, the control system is used for slag and fills dolly position detection in orbit, melts
Melt the control of blast furnace slag flowing velocity and the regulation of spraying system inner high voltage gas flow, the regulation of blast furnace slag cooler rotating speed and
With the measurement of solid-state blast furnace slag particle temperature.
The equipment of described processing blast furnace slag, in addition to the movement system 6 being connected with heat boiler outlet.
By adopting the above-described technical solution, the present invention has the advantages that：
The Processes and apparatus of processing blast furnace slag of the present invention, the blast furnace solid impurity particle come out by the technique productions has purity
The high, advantage of morphology controllable, is entirely capable of meeting the requirement of next step production technology；It can not only reclaim more than blast furnace slag to high-quality
Heat, and not consumption of new water, not to air discharge of noxious gases, reduce pollutant emission, improve working environment.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is present invention process flow chart；
In figure：1st, slag fills dolly；2nd, spraying system；3rd, blast furnace slag cooler；4th, waste heat boiler；5th, control system；6th, transhipment system
System.
【Embodiment】
Explanation that can be detailed by the following examples is of the invention, and the open purpose of the present invention is intended in the protection scope of the invention
All technological improvements.
The technique of processing blast furnace slag with reference to described in accompanying drawing 1, possesses operation and comprises the following steps：
A, send instruction by control system, slag fills dolly and enters operation preparatory position, and molten blast furnace slag flows into slag by slag runner and fills small
Car；
B, slag fill dolly and filled after molten blast furnace slag, and control system sends instruction, and slag fills dolly and marched to above spraying system, together
When control system send the power supply that spraying system is opened in instruction, spraying system enters readiness for operation；
After c, control system check that the position of slag filling dolly is errorless, the plug rod mechanism below instruction unpack slag filling dolly, temperature are sent
The molten blast furnace slag spent for 1350 DEG C -1450 DEG C flows out into blast furnace slag cooler；
D, molten state blast furnace slag are broken rapidly under the impact of spraying system gases at high pressure in blast furnace slag cooler by high velocity air
It is broken, so as to be fractured into 4-6mm high-temperature solid blast furnace solid impurity particle, and cooled down and collected in blast furnace slag cooler；
High temperature blast furnace solid impurity particle after e, cooling enters waste heat boiler, and waste heat boiler is then by the waste heat of high-temperature solid blast furnace solid impurity particle
Reclaim, and produce medium pressure steam, high temperature blast furnace solid impurity particle is cooled in waste heat boiler, control system detection solid-state blast furnace
Solid impurity particle temperature, its temperature is discharged when reaching at 180 DEG C, and cold conditions blast furnace solid impurity particle is transported systematic collection transhipment；
F, after slag fills small in-car whole blast furnace slags outflow, control system sends instruction, makes slag fill dolly return, then fills again
Full blast furnace slag, repeats b-e processes.
In the technique of described processing blast furnace slag, step d, the temperature of cooling is 800 DEG C -900 in blast furnace slag cooler 3
℃。
In the technique of described processing blast furnace slag, step e, medium pressure steam is 450 DEG C, 3.82Mpa, the middle middle benefit gas
Pressure steam may be incorporated into steam pipe system, it can also be used to which afterheat generating system ahead turbine generates electricity.
A kind of equipment for handling blast furnace slag, including spraying system 2, blast furnace slag cooler 3, waste heat boiler 4 and control system
5, dolly 1 is filled provided with slag in the top of spraying system 2, the molten blast furnace slag that slag is filled in dolly 1 sends into blast furnace by spraying system 2
In slag cooler 3, water-cooling wall, the slag notch of blast furnace slag cooler 3 and entering for waste heat boiler 4 are provided with blast furnace slag cooler 3
Mouth connection, the control system 5 fills dolly 1, spraying system 2, blast furnace slag cooler 3, waste heat boiler 4 with slag respectively and passes through signal
Connection.
The equipment of described processing blast furnace slag, the slag fills dolly 1 and set in orbit, in orbit provided with position detection
Device.
The equipment of described processing blast furnace slag, the control system 5 position detection in orbit for slag filling dolly 1,
The control of molten blast furnace slag flowing velocity and regulation, the tune of the rotating speed of blast furnace slag cooler 3 of the inner high voltage gas flow of spraying system 2
Section and the measurement with solid-state blast furnace slag particle temperature.
The equipment of described processing blast furnace slag, in addition to export the movement system 6 being connected with waste heat boiler 4.
Implement the Processes and apparatus of processing blast furnace slag of the present invention, when in use,（1）, control system send instruction,
Slag fills dolly and enters station；（2), 1350 DEG C -1450 DEG C of molten blast furnace slag flows into slag by slag runner and fills dolly, and slag fills dolly will
It is transported to above spraying system；（3）, by plug rod mechanism control molten blast furnace slag the rate of outflow, molten blast furnace slag injection
In the presence of system high-pressure gas, the solid-state blast furnace solid impurity particle for 5mm or so is finally fragmented；（4）, 5mm solid-state blast furnace
Solid impurity particle is cooled in blast furnace slag cooler and collected, and is finally cooled to 800 DEG C -900 DEG C of high-temperature solid blast furnace solid impurity particle；
（5）, 800 DEG C -900 DEG C of high-temperature solid blast furnace solid impurity particle enter and be cooled again in waste heat boiler, waste heat boiler is produced
3.82Mpa, 450 DEG C of medium pressure steam, the medium pressure steam of generation may be incorporated into steam pipe system, it can also be used to cogeneration
System ahead turbine generates electricity；（6）, high-temperature solid blast furnace solid impurity particle in waste heat boiler be cooled, sensible heat is recovered, and works as temperature
When reaching less than 180 DEG C, solid-state blast furnace solid impurity particle is discharged into movement system 6.
Part not in the detailed description of the invention is prior art.
The embodiment selected herein for the goal of the invention of the open present invention, is presently considered to be suitable, still,
It is to be understood that it is contemplated that all changes and improvement including all embodiments belonged in this design and invention scope.
Claims (7)
1. a kind of technique for handling blast furnace slag, it is characterized in that：Concrete operations comprise the following steps：
A, pass through control system（5）Instruction is sent, slag fills dolly（1）Into operation preparatory position, molten blast furnace slag is flowed into by slag runner
Slag fills dolly（1）；
B, slag fill dolly（1）Fill after molten blast furnace slag, control system（5）Instruction is sent, slag fills dolly（1）March to injection system
System（2）Top, while control system（5）Send instruction and open spraying system（2）Power supply, spraying system（2）It is accurate into work
Standby state；
C, control system（5）Check that slag fills dolly（1）Position it is errorless after, send instruction unpack slag fill dolly（1）The plug of lower section
Rod mechanism, temperature flows out into blast furnace slag cooler for 1350 DEG C -1450 DEG C of molten blast furnace slag（3）；
D, molten state blast furnace slag are in spraying system（2）Under the impact of gases at high pressure, in blast furnace slag cooler（3）Inside rapidly by a high speed
Air-flow is crushed, so that 4-6mm high-temperature solid blast furnace solid impurity particle is fractured into, and in blast furnace slag cooler（3）It is interior to be cooled down
And collection；
High temperature blast furnace solid impurity particle after e, cooling enters waste heat boiler（4）, waste heat boiler（4）Then by high-temperature solid blast furnace solid impurity particle
Waste heat recovery, and produce medium pressure steam, high temperature blast furnace solid impurity particle is in waste heat boiler（4）It is interior cooled, control system（5）
Solid-state blast furnace slag particle temperature is detected, its temperature is discharged when reaching at 180 DEG C, and cold conditions blast furnace solid impurity particle is transported system（6）
Collect transhipment；
F, when slag fill dolly（1）After interior whole blast furnace slag outflows, control system（5）Instruction is sent, makes slag fill dolly and returns, then
Blast furnace slag is again filled with, b-e processes are repeated.
2. the technique of processing blast furnace slag according to claim 1, it is characterized in that：In step d, in blast furnace slag cooler（3）
The temperature of interior cooling is 800 DEG C -900 DEG C.
3. the technique of processing blast furnace slag according to claim 1, it is characterized in that：In step e, medium pressure steam is 450
DEG C, 3.82Mpa, the medium pressure steam may be incorporated into steam pipe system, it can also be used to which afterheat generating system ahead turbine generates electricity.
4. the equipment of processing blast furnace slag according to claim 1, including spraying system（2）, blast furnace slag cooler（3）, it is remaining
Heat boiler（4）And control system（5）, it is characterized in that：In spraying system（2）Top provided with slag fill dolly（1）, slag filling dolly
（1）Interior molten blast furnace slag passes through spraying system（2）Send into blast furnace slag cooler（3）It is interior, in blast furnace slag cooler（3）Inside it is provided with
Water-cooling wall, blast furnace slag cooler（3）Slag notch and waste heat boiler（4）Import connection, the control system（5）Respectively with slag
Fill dolly（1）, spraying system（2）, blast furnace slag cooler（3）, waste heat boiler（4）Connected by signal.
5. the equipment of the processing blast furnace slag according to claim 1 or 4, it is characterized in that：The slag fills dolly（1）Set in-orbit
On road, in orbit provided with position detector.
6. the equipment of the processing blast furnace slag according to claim 1 or 4, it is characterized in that：The control system（5）Filled for slag
Dolly（1）Position detection, the control of molten blast furnace slag flowing velocity and spraying system in orbit（2）Inner high voltage gas flow
Regulation, blast furnace slag cooler（3）The regulation of rotating speed and the measurement with solid-state blast furnace slag particle temperature.
7. the equipment of the processing blast furnace slag according to claim 1 or 4, it is characterized in that：Also include and waste heat boiler（4）Outlet
The movement system being connected（6）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710280786.0A CN107267698A (en) | 2017-04-26 | 2017-04-26 | A kind of Processes and apparatus for handling blast furnace slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710280786.0A CN107267698A (en) | 2017-04-26 | 2017-04-26 | A kind of Processes and apparatus for handling blast furnace slag |
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| CN107267698A true CN107267698A (en) | 2017-10-20 |
Family
ID=60073986
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| CN201710280786.0A Pending CN107267698A (en) | 2017-04-26 | 2017-04-26 | A kind of Processes and apparatus for handling blast furnace slag |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050084729A (en) * | 2004-02-24 | 2005-08-29 | 주식회사 포스코 | Apparatus for manufacturing fine slag with a function of utilizing sensible heat |
| CN101597658A (en) * | 2009-07-10 | 2009-12-09 | 东北大学 | A kind of blast furnace slag gasification system and method |
| CN101691620A (en) * | 2009-09-10 | 2010-04-07 | 河北理工大学 | Process and device for processing liquid steel slag |
| CN202730144U (en) * | 2012-07-11 | 2013-02-13 | 江苏东能环保能源科技有限公司 | Granulation treatment and waste heat utilization device for liquid slags |
| CN202945250U (en) * | 2012-10-15 | 2013-05-22 | 唐山钢铁国际工程技术有限公司 | Steel slag air quenching and waste heat recycling equipment |
| CN103320553A (en) * | 2013-06-25 | 2013-09-25 | 东北大学 | Device and method for quenching dry-method treatment and sensible heat recovery of high-temperature molten slag |
-
2017
- 2017-04-26 CN CN201710280786.0A patent/CN107267698A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050084729A (en) * | 2004-02-24 | 2005-08-29 | 주식회사 포스코 | Apparatus for manufacturing fine slag with a function of utilizing sensible heat |
| CN101597658A (en) * | 2009-07-10 | 2009-12-09 | 东北大学 | A kind of blast furnace slag gasification system and method |
| CN101691620A (en) * | 2009-09-10 | 2010-04-07 | 河北理工大学 | Process and device for processing liquid steel slag |
| CN202730144U (en) * | 2012-07-11 | 2013-02-13 | 江苏东能环保能源科技有限公司 | Granulation treatment and waste heat utilization device for liquid slags |
| CN202945250U (en) * | 2012-10-15 | 2013-05-22 | 唐山钢铁国际工程技术有限公司 | Steel slag air quenching and waste heat recycling equipment |
| CN103320553A (en) * | 2013-06-25 | 2013-09-25 | 东北大学 | Device and method for quenching dry-method treatment and sensible heat recovery of high-temperature molten slag |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20171020 |