CN103571990A - Water-fetching and temperature-decreasing device on top of blast furnace and control method thereof - Google Patents
Water-fetching and temperature-decreasing device on top of blast furnace and control method thereof Download PDFInfo
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- CN103571990A CN103571990A CN201210254325.3A CN201210254325A CN103571990A CN 103571990 A CN103571990 A CN 103571990A CN 201210254325 A CN201210254325 A CN 201210254325A CN 103571990 A CN103571990 A CN 103571990A
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Abstract
The invention discloses a water-fetching and temperature-decreasing device on the top of a blast furnace; the temperature-decreasing device comprises a plurality of water-fetching guns arranged on the top of the blast furnace; each water-fetching gun comprises a gun body, a spray head, a water and gas input pipe and a water and gas switch valve; the gun body is a single-pipe type structure with a single water and gas sharing channel inside; the atomization spray head is installed at the head part of the water and gas sharing channel; one end of the water and gas input pipe is communicated with the tail part of the water and gas sharing channel; the water and gas switch valve is arranged at the other end of the water and gas input pipe; and the water and gas switch valve is respectively connected with a cooling water header pipe and a nitrogen header pipe. The invention further discloses a water-fetching and temperature-decreasing control method on the top of the blast furnace. Because water and gas share the same gun body channel, the structure is simple; the cost is low; the better cooling effect can be obtained through the atomization spray head; furthermore, due to automatic control, nitrogen is introduced while water is not fetched; dust is effectively prevented; blockage is avoided; in addition, the use amount of nitrogen is also reduced; and the water-fetching and temperature-decreasing device on the top of the blast furnace and the control method thereof disclosed by the invention are energy-saving and environment-friendly.
Description
Technical field
The present invention relates to furnace roof cooling apparatus, more particularly, relate to a kind of blast furnace roof water injection heat sink.
Background technology
Under normal production conditions, blast furnace roof temperature is substantially at 100～200 ℃; and when Research for Feeding Raw Materials System breaks down can not material loading; cause low stockline or when slump material, pipeline trip appear in high furnace interior Gas Flow abnormal distribution; furnace top gas temperature can rise rapidly; while surpassing 300 ℃, will carry out furnace roof fetch water cooling, to protect furnace top equipment not to be burned.
The existing large blast furnace furnace roof heat sink of fetching water is generally comprised of high pressure water pipeline, nitrogen purging pipeline and the rifle of fetching water.Wherein, the quantity of the rifle of fetching water is by the decision of blast furnace size, and blast furnace water pumping rifle 10 quantity more than 4000m3 will reach 11～12, are along the circumferential direction uniformly distributed and are arranged on (see figure 1) on furnace roof sealing cover 1, and rifle head sees through sealing cover 1 and inserts in stove.
Shown in Fig. 2, common rifle 10 structures of fetching water are telescoping at present, are divided into inner and outer tubes, and inner and outer tubes are concentric-ring pattern structure.Inner tube is waterway channel, when needs are fetched water, has high pressure water to pass through, and is that blank pipe does not have current to pass through when not needing to fetch water.Between outer tube and inner tube, be channel of nitrogen, be connected with for a long time high pressure nitrogen.Fetch water the manually-operated gate of rifle in normally open, when furnace roof need to be fetched water, open high top pressure water supervisor's valve, after the now abundant atomization of atomisation unit of high pressure water by the rifle 10 rifle heads of fetching water, be sprayed onto equably in stove, cooling furnace charge and coal gas, the flow 160t/h that fetches water, hydraulic pressure 16kg.Owing to being rich in dust in blast furnace gas, when blast furnace does not need to fetch water, dust can enter the passage of fetching water, and causes the passage of fetching water to stop up.For when blast furnace does not need to fetch water, while particularly not fetching water for a long time, do not make dust stop up the passage of fetching water, no matter prior art is when fetching water or do not fetch water, and employing passes into all the time nitrogen and purges in outer tube, and the front end of channel of nitrogen becomes cone-shaped inside receipts, make the nitrogen blowing out form tapered air curtain one at rifle head front end, by coal gas and the dust isolation attempted near rifle head, thereby avoid dust to enter rifle head, stop up the passage of fetching water, cause the passage of fetching water to stop up.
But, adopt the above-mentioned rifle of fetching water to have following many defects:
1, its structure is telescoping, is divided into concentric inner and outer tubes, the complex structure of the rifle of fetching water, and manufacture difficulty and cost are all very high;
2, when not fetching water, in inner tube, there is no current equipressure medium, be the hollow state that the mouth of pipe is opened, though have outer tube nitrogen closing and purging, when not fetching water for a long time, still have unavoidably dust and enter, cause inner tube front end to stop up, impact is fetched water;
3, no matter be to fetch water or do not fetch water, pass into all the time nitrogen and purge in outer tube, nitrogen expends greatly, and use cost is high;
4,, when inner tube water flowing is fetched water, the sealing air-flow that outer tube blows out can disturb the current ejection of inner tube, etc. defect.
5, the structures shape of the existing rifle of fetching water the limitation that exists of its control method, so be also difficult to have breakthrough improvement in method.
Summary of the invention
For the above-mentioned shortcoming existing in prior art, the object of this invention is to provide a kind of blast furnace roof water injection heat sink and control method thereof, make the to fetch water designs simplification of rifle, reduces manufacture difficulty and the manufacturing cost of the rifle of fetching water, than better cooling, anti-blocking, the energy-conservation texts of prior art.
For achieving the above object, the present invention adopts following technical scheme:
On the one hand, a kind of blast furnace roof water injection heat sink, comprise several rifles of fetching water of being all located at blast furnace roof, each rifle of fetching water comprises rifle body, shower nozzle, aqueous vapor input tube and aqueous vapor switching valve, rifle body is the inner single hose structure that single aqueous vapor is share passage that has, shower nozzle is installed on the head that aqueous vapor is share passage, aqueous vapor input tube one end is share passage afterbody with aqueous vapor and is communicated with, aqueous vapor switching valve is located at the other end of aqueous vapor input tube, and is connected with nitrogen header pipe with water coolant house steward respectively by aqueous vapor switching valve.
Described rifle body case and inner aqueous vapor are share and between passage, are also filled with thermal insulation material.
Described rifle body head is provided with the installation step of indent, and shower nozzle is located in installation step, and fixes by screw thread and installation step.
Described rifle body case and inwall are stainless material.
Described shower nozzle is atomizer.
This heat sink of fetching water also comprise be evenly located at furnace roof for measuring temperature measuring equipment, external signal input circuit, microprocessor, control signal output circuit and the man-machine interface of gas temperature, external signal input circuit receives detection signal and length of run control signal the input microprocessor of temperature measuring equipment, storage, comparison, calculation process through microprocessor, by control signal output circuit, output control signals to aqueous vapor switching valve, carry out switching controls, man-machine interface is connected with microprocessor, in order to working order, selects, controls parameter setting, demonstration and operation.
On the other hand, a kind of blast furnace roof water injection control method for lowering temp, comprises the steps:
A. at blast furnace roof, several rifles of fetching water are evenly set, each rifle of fetching water comprises rifle body, shower nozzle, aqueous vapor input tube and aqueous vapor switching valve, rifle body is the inner single hose structure that single aqueous vapor is share passage that has, shower nozzle is installed on the head that aqueous vapor is share passage, aqueous vapor input tube one end is share passage afterbody with aqueous vapor and is communicated with, aqueous vapor switching valve is located at the other end of aqueous vapor input tube, and is connected with nitrogen header pipe with water coolant house steward respectively by aqueous vapor switching valve;
B. at blast furnace roof, several temperature measuring equipments are evenly set, in order to the gas temperature of real-time measurement furnace roof corresponding position, and deliver to microprocessor by external signal input circuit;
C. by microprocessor, observed temperature and man-machine interface preset temp are compared to computing, when observed temperature surpasses preset upper limit temperature, by microprocessor, by control signal output circuit, send the signal of fetching water, control the aqueous vapor switching valve action of the corresponding rifle of fetching water, to cut off nitrogen header pipe and water coolant house steward is communicated with the rifle of fetching water, to the cooling of fetching water of the Gas Flow of furnace roof inside;
D. after cooling, when observed temperature is during lower than default lower limit temperature, by microprocessor output, stop the signal of fetching water, control the aqueous vapor switching valve action of the rifle of respectively fetching water, to cut off water coolant house steward and nitrogen header pipe be communicated with the rifle of fetching water, by fight each other hydraulic giant inside and shower nozzle of nitrogen flushing, purge, prevent from stopping up.
Described shower nozzle is atomizer.
In technique scheme, blast furnace roof water injection heat sink of the present invention and control method thereof, comprise several rifles of fetching water of being located at blast furnace roof, each rifle of fetching water comprises rifle body, shower nozzle, aqueous vapor input tube and aqueous vapor switching valve, rifle body is the inner single hose structure that single aqueous vapor is share passage that has, atomizer is installed on the head that aqueous vapor is share passage, aqueous vapor input tube one end is share passage afterbody with aqueous vapor and is communicated with, aqueous vapor switching valve is located at the other end of aqueous vapor input tube, and is connected with nitrogen header pipe with water coolant house steward respectively by aqueous vapor switching valve.This rifle of fetching water adopts water, gas to share same rifle body passage, simple in structure, cost is low, by atomizer, can obtain preferably cooling performance, and by automatically controlling, when not fetching water, logical nitrogen, not only can effectively stop dust to enter, prevent from stopping up, and because aqueous vapor is share the latus rectum of passage much smaller than the concentric(al) circles latus rectum of prior art, therefore can also reduce nitrogen use level, energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 is the installation vertical view of the heat sink of prior art;
Fig. 2 is the sectional view of the rifle of fetching water of prior art;
Fig. 3 is the installation vertical view of heat sink of the present invention;
Fig. 4 is the sectional view of the rifle of fetching water of the present invention;
Fig. 5 is the amplification view of the rifle head of fetching water of the present invention;
Fig. 6 is the axial view of the rifle head of fetching water of the present invention;
Fig. 7 is the control principle block diagram of heat sink of the present invention;
Fig. 8 is the FB(flow block) of controlling ventilation intermittence of the present invention.
Embodiment
Below in conjunction with drawings and Examples, further illustrate technical scheme of the present invention.
Shown in Fig. 3～Fig. 6, what blast furnace roof water injection heat sink of the present invention was same as the prior art is, equally also comprise several rifles of fetching water of being evenly located at blast furnace roof, difference is with it, each rifle 20 of fetching water comprises rifle body 21, shower nozzle 22, aqueous vapor input tube 23 and aqueous vapor switching valve 24, rifle body 21 is single hose structure, inside is provided with single aqueous vapor and share passage 25, shower nozzle 22 can adopt atomizer, be installed on rifle body 21 heads, aqueous vapor input tube 23 one end are communicated with rifle body 21 afterbodys, aqueous vapor switching valve 24 is located at the other end of aqueous vapor input tube 23, and high-pressure cooling water pipe 26He mono-tunnel elevated pressure nitrogen tracheae 27 in Yu Yi road is connected respectively by aqueous vapor switching valve 24.Wherein, the effect that adopts atomizer 22 is the high pressure water entering in rifle body 21 can be formed to atomizing state, cooling performance is better, and this atomizer 22 specifically can adopt following mounting means: the installation step that an indent is set at rifle body 21 heads, atomizer 22 is located in installation step, and be tightened mutually by screw thread 28 and installation step, very convenient.
Above-mentioned aqueous vapor switching valve 24, being mainly used in controlling its correspondence rifle 20 of fetching water is connected with elevated pressure nitrogen tracheae with high-pressure cooling water pipe respectively, this aqueous vapor switching valve 24 can use three two-port valves, water is connected to the rifle of fetching water in a position, another position connects and is vented to the rifle of fetching water, and also has a position water and gas and the rifle of fetching water all obstructed.Can certainly adopt water and gas respectively to use separately a valve to carry out the form of switching controls.
Due in stove during normal production throat temperature in 100～200 ℃, under error state (ERST), instantaneous temperature may be over 500 ℃, but fetch water and can lower the temperature rapidly by checking in stove and furnace roof, therefore the rifle 20 of fetching water can not bear very high operating ambient temperature in actual use, for this reason, rifle body 21 shells and inwall are designed to adopt stainless material, and between rifle body 21 shells and inwall, be also filled with thermal insulation materials 29 such as heat insulation resistance to material, fiber, so can improve the resistance toheat of rifle body 21, and guaranteeing its work-ing life, cost can be too not high yet certainly.
Above-mentioned aqueous vapor switching valve 24 can adopt manually or automatically and control, when furnace roof need to be fetched water, by aqueous vapor switching valve 24, control the aqueous vapor of high pressure water in aqueous vapor input tube 23 enters rifle body 21 and share passage 25, by atomizer 22, make the high pressure water of ejection become atomizing state, furnace roof is carried out to effective cooling; When furnace roof is not fetched water, by aqueous vapor switching valve 24, control nitrogen and enter rifle body 21, aqueous vapor is share to passage 25 to be purged, can effectively prevent that dust from entering in rifle body 21, high-pressure blowing nitrogen gas stream is share passage 25 from atomizer 22 ejections through aqueous vapor, directly purge aqueous vapor and share passage 25 and atomizer 22, and the latus rectum of giving vent to anger of atomizer 22 is less, the pressure that has increased exit gas when reducing nitrogen purge gas flow amount, in solar term, blocking-proof result is better.
Shown in Fig. 7, as an embodiment, this heat sink 20 also comprises temperature measuring equipment, external signal input circuit, microprocessor, control signal output circuit and the man-machine interface of controlling for automatically, temperature measuring equipment is evenly located at furnace roof, it is four that temperature measuring equipment 30 in Fig. 3 is installed quantity, to be mutually 90 degree angles, be distributed in furnace roof same level respectively, in order to detect respectively the gas temperature of four quadrants in blast furnace roof, the quantity of temperature measuring equipment also can increase and decrease according to concrete blast furnace situation certainly.External signal input circuit receives observed temperature signal and length of run control signal the input microprocessor of temperature measuring equipment, and wherein remote control signal mainly contains various Long-distance Control actuating signals and failure reset signal.Man-machine interface is connected with microprocessor, to microprocessor, sends into parameters, working order selection and demonstration and the operation that various control needs.Microprocessor receives observed temperature signal and storing control parameter, and carries out computing, processing through Internal Control Procedure, then to control signal output circuit and operator-machine-interface, exports various control informations and demonstration information.Control signal output circuit exports control signal to aqueous vapor switching valve 24 and the remote control room of the rifle 20 of fetching water, and carries out respectively the switching controls (switching controls of fetching water cooling and purging) of aqueous vapor switching valve 24 and the teletransmission of various status signal and guard signal.
So, the key step of blast furnace roof water injection control method for lowering temp of the present invention comprises:
A. at blast furnace roof, several rifles of fetching water are evenly set, each rifle of fetching water comprises rifle body, atomizer, aqueous vapor input tube and aqueous vapor switching valve, rifle body is the inner single hose structure that single aqueous vapor is share passage that has, shower nozzle is installed on the head that aqueous vapor is share passage, aqueous vapor input tube one end is share passage afterbody with aqueous vapor and is communicated with, aqueous vapor switching valve is located at the other end of aqueous vapor input tube, and is connected with nitrogen header pipe with water coolant house steward respectively by aqueous vapor switching valve;
B. at blast furnace roof, several temperature measuring equipments are evenly set, in order to the gas temperature of real-time measurement furnace roof corresponding position, and deliver to microprocessor by external signal input circuit;
C. by microprocessor, observed temperature and man-machine interface preset temp are compared to computing, when observed temperature surpasses preset upper limit temperature, by microprocessor, by control signal output circuit, send the signal of fetching water, control the aqueous vapor switching valve action of the rifle of respectively fetching water, to cut off nitrogen header pipe and water coolant house steward is communicated with the rifle of fetching water, to the cooling of fetching water of the Gas Flow of furnace roof inside;
D. after cooling, when observed temperature is during lower than default lower limit temperature, by microprocessor output, stop the signal of fetching water, control the aqueous vapor switching valve action of the rifle of respectively fetching water, to cut off water coolant house steward's water coolant, enter the rifle of fetching water, and nitrogen header pipe is communicated with the rifle of fetching water, make nitrogen enter the rifle of fetching water, by nitrogen flushing, from shower nozzle front end, blow out, in order to fight each other hydraulic giant inside and shower nozzle, purge, prevent from stopping up.For energy-conservation, described nitrogen purging, can be continuous purging, can be also the mode according to circumstances setting in advance in microprocessor, carries out intermittent energy-saving purging, concrete visible Fig. 8 of purge step by controlling the action of aqueous vapor switching valve.
In sum, adopt blast furnace roof water injection heat sink of the present invention and control method thereof, have following advantage:
1, the fetch water structure of rifle is single tube form, and the rifle inside of fetching water only has a pipeline, simple in structure, easy to manufacture, and facility investment and maintenance cost decline.
2, the rifle of fetching water of single pipeline, pipeline water flowing when stock gas needs cooling down, when stock gas does not need cooling down, pipeline ventilation is prevented dust.When shower nozzle is sprayed water, the current of ejection are not subject to dustproof interference in air flow, and cooling-water flowing spray regime is large, is particularly having the occasion of atomizer, and effect is more obvious, increase cooling-down effect.
3, when not fetching water, dustproof gas sprays from shower nozzle, adopts same passage with water spray, there is no the space of unlatching, does not fetch water for a long time also not have dust and enter and gather.
4, when not fetching water, dustproof gas sprays from shower nozzle, and shower nozzle outlet latus rectum is less, and therefore the nitrogen amount of expending also reduces, and use cost reduces.Because shower nozzle outlet latus rectum is less, under equal intake pressure, gas injection pressure and flow velocity increase, and are conducive to improve prevent laying dust effect.
5, according to fetch water rifle different states and rifle body, be easily not easy sticky grey situation needs, carry out controlling ventilation control method different intermittences, saved to a great extent especially a large amount of nitrogen amounts of expending.
6,, owing to having adopted different method and apparatus structures in the past, determined that control method of the present invention has breakthrough improvement and effect in the past technical.
Those of ordinary skill in the art will be appreciated that, above embodiment is only for the present invention is described, and be not used as limitation of the invention, as long as within the scope of connotation of the present invention, to the variation of the above embodiment, modification, all will drop within the scope of claims of the present invention.
Claims (8)
1. a blast furnace roof water injection heat sink, comprises several rifles of fetching water of being all located at blast furnace roof, and it is characterized in that:
Each rifle of fetching water comprises rifle body, shower nozzle, aqueous vapor input tube and aqueous vapor switching valve, rifle body is the inner single hose structure that single aqueous vapor is share passage that has, shower nozzle is installed on the head that aqueous vapor is share passage, aqueous vapor input tube one end is share passage afterbody with aqueous vapor and is communicated with, aqueous vapor switching valve is located at the other end of aqueous vapor input tube, and is connected with nitrogen header pipe with water coolant house steward respectively by aqueous vapor switching valve.
2. blast furnace roof water injection heat sink as claimed in claim 1, is characterized in that:
Described rifle body case and inner aqueous vapor are share and between passage, are also filled with thermal insulation material.
3. blast furnace roof water injection heat sink as claimed in claim 1, is characterized in that:
Described rifle body head is provided with the installation step of indent, and shower nozzle is located in installation step, and fixes by screw thread and installation step.
4. blast furnace roof water injection heat sink as claimed in claim 1, is characterized in that:
Described rifle body case and inwall are stainless material.
5. blast furnace roof water injection heat sink as claimed in claim 1, is characterized in that:
Described shower nozzle is atomizer.
6. blast furnace roof water injection heat sink as claimed in claim 1, is characterized in that:
This heat sink of fetching water also comprise be evenly located at furnace roof for measuring temperature measuring equipment, external signal input circuit, microprocessor, control signal output circuit and the man-machine interface of gas temperature, external signal input circuit receives detection signal and length of run control signal the input microprocessor of temperature measuring equipment, storage, comparison, calculation process through microprocessor, by control signal output circuit, output control signals to aqueous vapor switching valve, carry out switching controls, man-machine interface is connected with microprocessor, in order to working order, selects, controls parameter setting, demonstration and operation.
7. a blast furnace roof water injection control method for lowering temp, is characterized in that:
Comprise the steps:
A. at blast furnace roof, several rifles of fetching water are evenly set, each rifle of fetching water comprises rifle body, shower nozzle, aqueous vapor input tube and aqueous vapor switching valve, rifle body is the inner single hose structure that single aqueous vapor is share passage that has, shower nozzle is installed on the head that aqueous vapor is share passage, aqueous vapor input tube one end is share passage afterbody with aqueous vapor and is communicated with, aqueous vapor switching valve is located at the other end of aqueous vapor input tube, and is connected with nitrogen header pipe with water coolant house steward respectively by aqueous vapor switching valve;
B. at blast furnace roof, several temperature measuring equipments are evenly set, in order to the gas temperature of real-time measurement furnace roof corresponding position, and deliver to microprocessor by external signal input circuit;
C. by microprocessor, observed temperature and man-machine interface preset temp are compared to computing, when observed temperature surpasses preset upper limit temperature, by microprocessor, by control signal output circuit, send the signal of fetching water, control the aqueous vapor switching valve action of the rifle of respectively fetching water, to cut off nitrogen header pipe and water coolant house steward is communicated with the rifle of fetching water, to the cooling of fetching water of the Gas Flow of furnace roof inside;
D. after cooling, when observed temperature is during lower than default lower limit temperature, by microprocessor output, stop the signal of fetching water, control the aqueous vapor switching valve action of the rifle of respectively fetching water, to cut off water coolant house steward and nitrogen header pipe be communicated with the rifle of fetching water, by fight each other hydraulic giant inside and shower nozzle of nitrogen flushing, purge, prevent from stopping up.
8. blast furnace roof water injection control method for lowering temp as claimed in claim 7, is characterized in that:
Described shower nozzle is atomizer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210254325.3A CN103571990A (en) | 2012-07-23 | 2012-07-23 | Water-fetching and temperature-decreasing device on top of blast furnace and control method thereof |
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| CN201210254325.3A CN103571990A (en) | 2012-07-23 | 2012-07-23 | Water-fetching and temperature-decreasing device on top of blast furnace and control method thereof |
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| CN201210254325.3A Pending CN103571990A (en) | 2012-07-23 | 2012-07-23 | Water-fetching and temperature-decreasing device on top of blast furnace and control method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107421345A (en) * | 2017-08-01 | 2017-12-01 | 河南易成新能源股份有限公司 | Graphite cathode material high-temperature heat treatment explosion-protection equipment and method |
| CN107828925A (en) * | 2017-10-30 | 2018-03-23 | 山西太钢不锈钢股份有限公司 | A kind of blast furnace roof temprature control method |
| CN107941020A (en) * | 2017-12-22 | 2018-04-20 | 中冶焦耐(大连)工程技术有限公司 | A kind of highly-purity magnesite shaft furnace spraying cooling hydraulic giant |
| CN108203749A (en) * | 2018-02-01 | 2018-06-26 | 山东钢铁股份有限公司 | A kind of blast furnace water pumping rifle and furnace roof cool-down method |
| CN108687156A (en) * | 2018-05-03 | 2018-10-23 | 东莞市润华铝业有限公司 | A kind of cooling device of aluminium section bar |
| CN109736873A (en) * | 2019-01-10 | 2019-05-10 | 中国矿业大学 | A kind of intelligent temperature measurement water filling device and method for coal fire improvement |
| CN110229937A (en) * | 2019-06-27 | 2019-09-13 | 武汉钢铁有限公司 | A kind of method that the control of blast furnace stockline dropping pushes up temperature and prevents pinking |
| CN111020087A (en) * | 2019-12-19 | 2020-04-17 | 北京首钢股份有限公司 | Blast furnace water-fetching cooling method and device |
| CN111411186A (en) * | 2019-01-04 | 2020-07-14 | 新疆八一钢铁股份有限公司 | Ou ye stove shaft furnace roof atomizer |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107421345A (en) * | 2017-08-01 | 2017-12-01 | 河南易成新能源股份有限公司 | Graphite cathode material high-temperature heat treatment explosion-protection equipment and method |
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| CN107941020A (en) * | 2017-12-22 | 2018-04-20 | 中冶焦耐(大连)工程技术有限公司 | A kind of highly-purity magnesite shaft furnace spraying cooling hydraulic giant |
| CN108203749A (en) * | 2018-02-01 | 2018-06-26 | 山东钢铁股份有限公司 | A kind of blast furnace water pumping rifle and furnace roof cool-down method |
| CN108687156A (en) * | 2018-05-03 | 2018-10-23 | 东莞市润华铝业有限公司 | A kind of cooling device of aluminium section bar |
| CN111411186A (en) * | 2019-01-04 | 2020-07-14 | 新疆八一钢铁股份有限公司 | Ou ye stove shaft furnace roof atomizer |
| CN109736873A (en) * | 2019-01-10 | 2019-05-10 | 中国矿业大学 | A kind of intelligent temperature measurement water filling device and method for coal fire improvement |
| CN109736873B (en) * | 2019-01-10 | 2020-05-29 | 中国矿业大学 | Intelligent temperature-measuring water injection device and method for coal fire treatment |
| CN110229937A (en) * | 2019-06-27 | 2019-09-13 | 武汉钢铁有限公司 | A kind of method that the control of blast furnace stockline dropping pushes up temperature and prevents pinking |
| CN111020087A (en) * | 2019-12-19 | 2020-04-17 | 北京首钢股份有限公司 | Blast furnace water-fetching cooling method and device |
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Application publication date: 20140212 |