CN108359766A - A kind of oxygen bottom blowing converter smelting process control method based on continuous measurement of molten steel temperature - Google Patents
A kind of oxygen bottom blowing converter smelting process control method based on continuous measurement of molten steel temperature Download PDFInfo
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- CN108359766A CN108359766A CN201810174520.2A CN201810174520A CN108359766A CN 108359766 A CN108359766 A CN 108359766A CN 201810174520 A CN201810174520 A CN 201810174520A CN 108359766 A CN108359766 A CN 108359766A
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- bottom blowing
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- liquid steel
- dephosphorization
- steel temperature
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/30—Regulating or controlling the blowing
- C21C5/34—Blowing through the bath
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4673—Measuring and sampling devices
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- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The present invention relates to oxygen bottom blowing converter field of steel-making, provide a kind of oxygen bottom blowing converter smelting process control method based on continuous measurement of molten steel temperature, liquid steel temperature in stove is measured by installing thermometric spray gun in the furnace bottom of oxygen bottom blowing converter in real time, molten steel composition is predicted in real time according to liquid steel temperature and converter injection, charging situation, control by stages is carried out to the smelting process of oxygen bottom blowing converter based on liquid steel temperature, the injection parameter of dynamic regulation Bottom Blowing Ejection Gun realizes double hits of the optimum control and endpoint molten steel temperature, carbon content of smelting process.The present invention provides new method for the process and terminal point control of oxygen bottom blowing converter, and the double hit rates of smelting endpoint temperature, carbon content improve 10%, and endpoint molten steel phosphorus content is stably controlled within 80ppm, and steel technology reduces 10kg/t.
Description
Technical field
The present invention relates to oxygen bottom blowing converter field of steel-making, more particularly to a kind of bottom blowing oxygen based on continuous measurement of molten steel temperature
Converter steelmaking process control method.
Background technology
Oxygen bottom blowing converter has the ability of bottom blowing oxygen and solid powder, significantly improves the power of metallurgical reaction in stove
Condition, slag-steel reaction, can be in slags close to equilibrium state（FeO）Substantially carbon is removed to low-carbon neck under the conditions of not increased
Domain, while bottom blowing pulvis can produce to high efficiency, low cost low-carbon height with impurity elements such as phosphorus, sulphur in efficient removal molten iron
Quality steel grade.
Since the bottom blowing intensity of oxygen bottom blowing converter is big, melting bath stirring is strong, and reaction in furnace is violent, is difficult in actual production
Liquid steel temperature, ingredient are accurately predicted, and implement effective smelting process control, molten steel at the end of smelting often occurs
Temperature or the undesirable situation of molten steel composition.
Currently used smelting process monitoring means are analysis of fumes technology, but the technology is by furnace gas flow and stove
Gas ingredient predicts that the state of molten steel in stove, accuracy are unstable indirectly；Furnace gas harvester is mounted on furnace gas processing pipeline,
It is easy to happen blocking and damage, and measurement data lags behind real-time reactiveness in stove.
The development of Non-contact Infrared Temperature Measurement technology provides the continuous technological means for measuring liquid steel temperature, utilizes thermometric
Gas creates temperature signal transmission channel between molten steel and temperature transducer, can it is safe and stable, continuously measure molten steel temperature
Degree.The present invention continuously measures the liquid steel temperature of oxygen bottom blowing converter using infrared temperature-test technology, and implements bottom based on liquid steel temperature
Blow the smelting process control of oxygen coverter.
Invention content
The purpose of the present invention is exactly to have overcome the deficiencies of the prior art and provide a kind of BOTTOM OXYGEN based on continuous measurement of molten steel temperature
Gas converter steelmaking process control method, the liquid steel temperature of oxygen bottom blowing converter is continuously measured using infrared temperature-test technology, is based on steel
Molten steel composition in coolant-temperature gage and process blowing parameter prediction stove, the injection based on liquid steel temperature control by stages oxygen bottom blowing converter
Technological parameter realizes the optimal double hits with outlet temperature, carbon content of smelting process.
Technical scheme is as follows：
A kind of oxygen bottom blowing converter smelting process control method based on continuous measurement of molten steel temperature, institute is continuously measured by thermometric spray gun
State liquid steel temperature in oxygen bottom blowing converter；It is counted in real time according to feed stock for blast furnace amount, injection system operating parameter and the liquid steel temperature
Calculate the ingredient of molten steel in the oxygen bottom blowing converter；According to the injection parameter of the liquid steel temperature control by stages Bottom Blowing Ejection Gun.
Further, specifically comprise the following steps：
Step 1: the furnace bottom of the oxygen bottom blowing converter installs 1 thermometric spray gun that can continuously measure liquid steel temperature and several
Can bottom blowing carrier gas-pulvis Bottom Blowing Ejection Gun, the liquid steel temperature that the thermometric spray gun measures is real-time transmitted to control system；
It acquires and divides in real time Step 2: the control system smelts whole liquid steel temperature data progress to oxygen bottom blowing converter
Analysis calculates the ingredient of molten steel in oxygen bottom blowing converter stove in conjunction with oxygen bottom blowing converter injection system operating parameter；
Step 3: the injection for the liquid steel temperature control by stages Bottom Blowing Ejection Gun that the control system is measured according to thermometric spray gun is joined
Number.
Further, step 2 is specially：
Step 2.1）Before oxygen bottom blowing converter starts blowing, the original state of feed stock for blast furnace is counted, bottom blowing is calculated
The gross mass of C, Si, Mn, P, S and Fe element in all raw materials, total physics heat and total chemical heat in oxygen coverter stove；
Step 2.2）In oxygen bottom blowing converter smelting process, it is added according to oxidant injection amount, slag former addition and coolant
Amount is based on material balance and principle of energy balance in conjunction with the liquid steel temperature that thermometric spray gun measures, and calculates molten steel composition in stove.
Further, step 3 is specially：
Step 3.1）The desiliconization slugging stage：After starting blowing, when liquid steel temperature is less than dephosphorization lower limit temperature, Bottom Blowing Ejection Gun is to change
Slag pattern is blown, carrier gas O2, pulvis is pulverized limestone, and pulverized limestone injection rate is calculated according to heating rate and initial silicon content,
The molten slag of expected basicity is formed when reaching dephosphorization lower limit temperature；
Step 3.2）The high efficiency dephosphorating stage：When liquid steel temperature reaches dephosphorization lower limit temperature, Bottom Blowing Ejection Gun is blown with dephosphorization pattern, is carried
Gas is O2-CO2Gaseous mixture, pulvis are dephosphorization pulvis, the total amount of required dephosphorization pulvis are calculated according to initial phosphorous content, according to dephosphorization
Pulvis injection rate calculates dephosphorization phase duration, according to O in liquid steel temperature dynamic regulation carrier gas2And CO2Ratio, to
Heating rate is controlled, liquid steel temperature is made to reach dephosphorization ceiling temperature in dephosphorization stage terminal；
Step 3.3）The decarburization temperature rise period：When liquid steel temperature reaches dephosphorization ceiling temperature, after completing slugging and dephosphorization, Bottom Blowing Ejection Gun
It is blown with decarburization heating mode, bottom blowing O2, quick decarburization heating, until liquid steel temperature reaches the pre- controlling temperature of terminal；
Step 3.4）The terminal point control stage：After liquid steel temperature reaches terminal pre- controlling temperature, the molten steel predicted in conjunction with control system
Ingredient, Bottom Blowing Ejection Gun are blown with terminal point control pattern, bottom blowing O2-CO2Gaseous mixture, the liquid steel temperature measured according to thermometric spray gun and
The molten steel composition that control system calculates, dynamic regulation O2And CO2Mixed proportion, realize the double hits of outlet temperature and carbon content；
Step 3.5）The tapping stage：When liquid steel temperature reaches tapping target temperature, bottom blowing N2/ Ar, turndown tapping, completes smelting
Refining.
Further, the thermometric spray gun is mounted on the furnace bottom of oxygen bottom blowing converter, and outlet end is concordant with furnace bottom inner surface,
Arrival end installs temperature transducer and thermometric gas connection, prevents molten steel from pouring in down a chimney to spray gun using thermometric gas, in molten steel
The liquid steel temperature characteristic signal transmission channel of safety and stability is established between temperature transducer, realizes oxygen bottom blowing converter molten steel temperature
The continuous monitoring of degree；The thermometric gas is O2-CO2-N2- Ar gaseous mixtures.
Further, the dephosphorization lower limit temperature is 1350 ~ 1375 DEG C, and the dephosphorization ceiling temperature is 1375 ~ 1400 DEG C,
The pre- controlling temperature of terminal is the initial temperature in terminal point control stage, less than 30 ~ 60 DEG C of target temperature of tapping.
Further, in step 3.4）Terminal point control stage, molten steel " rephosphorization " in order to prevent, in bottom blowing O2-CO2While
Injection dephosphorization pulvis.
Further, the quantity of the Bottom Blowing Ejection Gun is 2 ~ 10, according to the nominal capacity of oxygen bottom blowing converter and bottom blowing
Intensity determines.
Beneficial effects of the present invention are：This method can measure the molten steel temperature in oxygen bottom blowing converter smelting process in real time
Degree, and predict molten steel composition in stove, control by stages is carried out to the smelting process of oxygen bottom blowing converter on this basis, early period is fast
Speed forms the clinker for presetting basicity, and the dephosphorization stage maintains dephosphorization temperature and improving dephosphorization effect, latter stage to pass through O2-CO2Mixed injection,
The double hits for realizing smelting endpoint molten steel temperature and carbon content, make the end phosphorus content stability contorting of oxygen bottom blowing converter exist
Within 80ppm, the double hit rates of smelting endpoint temperature, carbon content improve 10%, and steel technology reduces 10kg/t.
Description of the drawings
Fig. 1 show a kind of oxygen bottom blowing converter smelting process controlling party based on continuous measurement of molten steel temperature of the embodiment of the present invention
The control flow schematic diagram of method.
Fig. 2 show the schematic device of the oxygen bottom blowing converter smelting process control method based on continuous measurement of molten steel temperature.
In figure：1, the furnace bottom of oxygen bottom blowing converter；2, molten steel；3, thermometric spray gun；3-1, thermometric gas connection；3-2, thermometric
Sensor；4, Bottom Blowing Ejection Gun.
Specific implementation mode
The specific embodiment of the invention is described in detail below in conjunction with specific attached drawing.It should be noted that in following embodiments
The combination of the technical characteristic or technical characteristic of description is not construed as isolated, they can be combined with each other to reach
To superior technique effect.In the attached drawing of following embodiments, identical label that each attached drawing occurs represent identical feature or
Person's component can be applied in different embodiments.
As shown in Figure 1, 2, a kind of oxygen bottom blowing converter smelting process control based on continuous measurement of molten steel temperature of the embodiment of the present invention
Method processed, specifically includes following steps：
Step 1：The furnace bottom of the oxygen bottom blowing converter installs 1 thermometric spray gun that can continuously measure liquid steel temperature and several
Can bottom blowing carrier gas-pulvis Bottom Blowing Ejection Gun, the liquid steel temperature that the thermometric spray gun measures is real-time transmitted to control system；
Step 2：The control system smelts whole liquid steel temperature data progress to oxygen bottom blowing converter and acquires and divide in real time
Analysis calculates molten steel in oxygen bottom blowing converter stove in conjunction with oxygen bottom blowing converter injection system operating parameter on the basis of data
Ingredient specifically includes following steps：
Step 2.1）Before oxygen bottom blowing converter starts blowing, the original state of feed stock for blast furnace is counted, bottom blowing is calculated
The gross mass of C, Si, Mn, P, S and Fe element in all raw materials, total physics heat and total chemical heat in oxygen coverter stove.
Step 2.2）In oxygen bottom blowing converter smelting process, according to oxidant injection amount, slag former addition and coolant
Addition is based on material balance and principle of energy balance in conjunction with the liquid steel temperature that thermometric spray gun measures, predict in stove molten steel at
Point.
Step 3：The injection for the liquid steel temperature control by stages Bottom Blowing Ejection Gun that the control system is measured according to thermometric spray gun
Parameter, it is specific as follows：
Step 3.1）The desiliconization slugging stage：After starting blowing, when liquid steel temperature is less than dephosphorization lower limit temperature, Bottom Blowing Ejection Gun is to change
Slag pattern is blown, carrier gas O2, pulvis is pulverized limestone, and pulverized limestone injection rate is calculated according to heating rate and initial silicon content,
The molten slag of expected basicity is formed when reaching dephosphorization lower limit temperature；
Step 3.2）The high efficiency dephosphorating stage：When liquid steel temperature reaches dephosphorization lower limit temperature, Bottom Blowing Ejection Gun is blown with dephosphorization pattern, is carried
Gas is O2-CO2Gaseous mixture, pulvis are dephosphorization pulvis, the total amount of required dephosphorization pulvis are calculated according to initial phosphorous content, according to dephosphorization
Pulvis injection rate calculates dephosphorization phase duration, according to O in liquid steel temperature dynamic regulation carrier gas2And CO2Ratio, to
Heating rate is controlled, liquid steel temperature is made to reach dephosphorization ceiling temperature in dephosphorization stage terminal；
Step 3.3）The decarburization temperature rise period：When liquid steel temperature reaches dephosphorization ceiling temperature, after completing slugging and dephosphorization, Bottom Blowing Ejection Gun
It is blown with decarburization heating mode, bottom blowing O2, quick decarburization heating, until liquid steel temperature reaches the pre- controlling temperature of terminal；
Step 3.4）The terminal point control stage：After liquid steel temperature reaches terminal pre- controlling temperature, the molten steel predicted in conjunction with control system
Ingredient, Bottom Blowing Ejection Gun are blown with terminal point control pattern, bottom blowing O2-CO2Gaseous mixture, the liquid steel temperature measured according to thermometric spray gun and
The molten steel composition of control system prediction, dynamic regulation O2And CO2Mixed proportion, realize the double hits of outlet temperature and carbon content；
Step 3.5）The tapping stage：When liquid steel temperature reaches tapping target temperature, bottom blowing N2/ Ar, turndown tapping, completes smelting
Refining.
Embodiment 1
The present embodiment is applied on 100 tons of oxygen bottom blowing converters, the furnace bottom of the oxygen bottom blowing converter be disposed with 1 thermometric spray gun and
4 Bottom Blowing Ejection Guns, wherein thermometric spray gun are arranged in hearth center, and 4 Bottom Blowing Ejection Guns are arranged symmetrically in trunnion center line both sides.It surveys
The thermometric gas that warm spray gun uses is O2-N2The air supply intensity of-Ar gaseous mixtures, Bottom Blowing Ejection Gun is 0.8Nm3/ t/min, powder supply intensity
For 2 ~ 4kg/t/min.The dephosphorization lower limit temperature that the converter is set is 1350 DEG C, and dephosphorization ceiling temperature is 1400 DEG C, terminal pre-control
Temperature is less than 50 DEG C of target temperature of tapping.
After control method using the present invention, outlet temperature and the double hit rates of carbon content reach 99.6%, and endpoint molten steel phosphorus
Stable content controls within 80ppm, and the steel technology of converter procedure is 1061kg/t.
Embodiment 2
The present embodiment is applied on 300 tons of oxygen bottom blowing converters, the furnace bottom of the oxygen bottom blowing converter be disposed with 1 thermometric spray gun and
8 Bottom Blowing Ejection Guns, wherein thermometric spray gun are arranged in hearth center, and 8 Bottom Blowing Ejection Guns are arranged symmetrically in trunnion center line both sides.It surveys
The thermometric gas that warm spray gun uses is O2-CO2The air supply intensity of gaseous mixture, Bottom Blowing Ejection Gun is 1.0Nm3/ t/min, powder supply intensity are
2.5~5kg/t/min.The dephosphorization lower limit temperature that the converter is set is 1360 DEG C, and dephosphorization ceiling temperature is 1390 DEG C, terminal pre-control
Temperature is less than 30 DEG C of target temperature of tapping.
After control method using the present invention, outlet temperature and the double hit rates of carbon content reach 99.2%, and endpoint molten steel phosphorus
Stable content controls within 75ppm, and the steel technology of converter procedure is 1055kg/t.
Although having been presented for several embodiments of the present invention herein, it will be appreciated by those of skill in the art that
Without departing from the spirit of the invention, the embodiments herein can be changed.Above-described embodiment is only exemplary, no
It should be using the embodiments herein as the restriction of interest field of the present invention.
Claims (8)
1. a kind of oxygen bottom blowing converter smelting process control method based on continuous measurement of molten steel temperature, which is characterized in that pass through thermometric
Spray gun continuously measures liquid steel temperature in the oxygen bottom blowing converter；According to feed stock for blast furnace amount, injection system operating parameter and described
Liquid steel temperature calculates the ingredient of molten steel in the oxygen bottom blowing converter in real time；It is sprayed according to the liquid steel temperature control by stages bottom blowing
The injection parameter of rifle.
2. the method as described in claim 1, which is characterized in that specifically comprise the following steps：
Step 1: the furnace bottom of the oxygen bottom blowing converter installs 1 thermometric spray gun that can continuously measure liquid steel temperature and several
Can bottom blowing carrier gas-pulvis Bottom Blowing Ejection Gun, the liquid steel temperature that the thermometric spray gun measures is real-time transmitted to control system；
It acquires and divides in real time Step 2: the control system smelts whole liquid steel temperature data progress to oxygen bottom blowing converter
Analysis calculates the ingredient of molten steel in oxygen bottom blowing converter stove in conjunction with oxygen bottom blowing converter injection system operating parameter；
Step 3: the injection for the liquid steel temperature control by stages Bottom Blowing Ejection Gun that the control system is measured according to thermometric spray gun is joined
Number.
3. method as claimed in claim 2, which is characterized in that step 2 is specially：
Step 2.1）Before oxygen bottom blowing converter starts blowing, the original state of feed stock for blast furnace is counted, bottom blowing is calculated
The gross mass of C, Si, Mn, P, S and Fe element in all raw materials, total physics heat and total chemical heat in oxygen coverter stove；
Step 2.2）In oxygen bottom blowing converter smelting process, it is added according to oxidant injection amount, slag former addition and coolant
Amount is based on material balance and principle of energy balance in conjunction with the liquid steel temperature that thermometric spray gun measures, and calculates molten steel composition in stove.
4. method as claimed in claim 2, which is characterized in that step 3 is specially：
Step 3.1）The desiliconization slugging stage：After starting blowing, when liquid steel temperature is less than dephosphorization lower limit temperature, Bottom Blowing Ejection Gun is to change
Slag pattern is blown, carrier gas O2, pulvis is pulverized limestone, and pulverized limestone injection rate is calculated according to heating rate and initial silicon content,
The molten slag of expected basicity is formed when reaching dephosphorization lower limit temperature；
Step 3.2）The high efficiency dephosphorating stage：When liquid steel temperature reaches dephosphorization lower limit temperature, Bottom Blowing Ejection Gun is blown with dephosphorization pattern, is carried
Gas is O2-CO2Gaseous mixture, pulvis are dephosphorization pulvis, the total amount of required dephosphorization pulvis are calculated according to initial phosphorous content, according to dephosphorization
Pulvis injection rate calculates dephosphorization phase duration, according to O in liquid steel temperature dynamic regulation carrier gas2And CO2Ratio, to
Heating rate is controlled, liquid steel temperature is made to reach dephosphorization ceiling temperature in dephosphorization stage terminal；
Step 3.3）The decarburization temperature rise period：When liquid steel temperature reaches dephosphorization ceiling temperature, after completing slugging and dephosphorization, Bottom Blowing Ejection Gun
It is blown with decarburization heating mode, bottom blowing O2, quick decarburization heating, until liquid steel temperature reaches the pre- controlling temperature of terminal；
Step 3.4）The terminal point control stage：After liquid steel temperature reaches terminal pre- controlling temperature, the molten steel predicted in conjunction with control system
Ingredient, Bottom Blowing Ejection Gun are blown with terminal point control pattern, bottom blowing O2-CO2Gaseous mixture, the liquid steel temperature measured according to thermometric spray gun and
The molten steel composition that control system calculates, dynamic regulation O2And CO2Mixed proportion, realize the double hits of outlet temperature and carbon content；
Step 3.5）The tapping stage：When liquid steel temperature reaches tapping target temperature, bottom blowing N2/ Ar, turndown tapping are completed to smelt.
5. method according to any one of claims 1-4, which is characterized in that the thermometric spray gun is mounted on oxygen bottom blowing converter
Furnace bottom, outlet end is concordant with furnace bottom inner surface, and arrival end installs temperature transducer and thermometric gas connection, utilizes thermometric gas
Prevent molten steel from pouring in down a chimney to spray gun, the liquid steel temperature characteristic signal that safety and stability is established between molten steel and temperature transducer passes
The continuous monitoring of oxygen bottom blowing converter liquid steel temperature is realized in defeated channel；The thermometric gas is O2-CO2-N2- Ar gaseous mixtures.
6. method as claimed in claim 4, which is characterized in that the dephosphorization lower limit temperature is 1350 ~ 1375 DEG C, the dephosphorization
Ceiling temperature is 1375 ~ 1400 DEG C, and the pre- controlling temperature of terminal is the initial temperature in terminal point control stage, less than tapping target temperature
30 ~ 60 DEG C of degree.
7. method as claimed in claim 4, which is characterized in that in step 3.4）The terminal point control stage, in order to prevent molten steel " return
Phosphorus ", in bottom blowing O2-CO2While injection dephosphorization pulvis.
8. the method as described in claim 1-4, which is characterized in that the quantity of the Bottom Blowing Ejection Gun is 2 ~ 10, according to bottom blowing
The nominal capacity and bottom blowing intensity of oxygen coverter determine.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810174520.2A CN108359766B (en) | 2018-03-02 | 2018-03-02 | A kind of oxygen bottom blowing converter smelting process control method based on continuous measurement of molten steel temperature |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810174520.2A CN108359766B (en) | 2018-03-02 | 2018-03-02 | A kind of oxygen bottom blowing converter smelting process control method based on continuous measurement of molten steel temperature |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109097523A (en) * | 2018-08-31 | 2018-12-28 | 钢铁研究总院 | A kind of double slag process smelting process |
| CN110699510A (en) * | 2019-09-17 | 2020-01-17 | 柳州钢铁股份有限公司 | Converter efficient dephosphorization method controlled in stages according to molten pool temperature |
| CN111500815A (en) * | 2020-05-28 | 2020-08-07 | 北京科技大学 | Bottom blowing O2-CO2Dynamic control method for steelmaking process of CaO converter |
| WO2021073015A1 (en) * | 2019-10-16 | 2021-04-22 | 北京科技大学 | Converter co2-o2 mixed injection smelting method and dynamic temperature control method in fire-point region |
| CN113654663A (en) * | 2021-07-19 | 2021-11-16 | 长春工业大学 | Online continuous temperature measurement system of AOD furnace and working method thereof |
| CN114854929A (en) * | 2022-05-07 | 2022-08-05 | 北京科技大学 | Converter blowing CO 2 Method for dynamically predicting molten steel components and temperature in real time |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201548328U (en) * | 2009-10-27 | 2010-08-11 | 东营方圆有色金属有限公司 | Temperature measuring device for oxygen bottom-blowing furnace molten bath |
| CN102226226A (en) * | 2011-06-20 | 2011-10-26 | 鞍山华威冶金用氧设备有限公司 | Method for preventing mushroom head blockage in converter steel making process |
| CN103320574A (en) * | 2012-03-23 | 2013-09-25 | 山西太钢不锈钢股份有限公司 | Molten iron dephosphorizing method |
| CN103757174A (en) * | 2013-11-30 | 2014-04-30 | 南京梅山冶金发展有限公司 | Full-automatic control system and control method for converter bottom blowing |
| CN103882176A (en) * | 2014-03-25 | 2014-06-25 | 东北大学 | On-line dynamic optimization control method for converter steelmaking process based on data driving |
| CN104630410A (en) * | 2015-02-10 | 2015-05-20 | 东北大学 | Real-time dynamic converter steelmaking quality prediction method based on data analysis |
| CN105907914A (en) * | 2016-06-22 | 2016-08-31 | 北京科技大学 | Steel-making method for prolonging service life of bottom-blowing oxygen converter through CO2 |
| CN106048129A (en) * | 2016-07-11 | 2016-10-26 | 湖南华菱涟源钢铁有限公司 | Converter high-carbon low-phosphorous end-point control metallurgy method under condition of phosphorous molten iron in blast furnace |
-
2018
- 2018-03-02 CN CN201810174520.2A patent/CN108359766B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201548328U (en) * | 2009-10-27 | 2010-08-11 | 东营方圆有色金属有限公司 | Temperature measuring device for oxygen bottom-blowing furnace molten bath |
| CN102226226A (en) * | 2011-06-20 | 2011-10-26 | 鞍山华威冶金用氧设备有限公司 | Method for preventing mushroom head blockage in converter steel making process |
| CN103320574A (en) * | 2012-03-23 | 2013-09-25 | 山西太钢不锈钢股份有限公司 | Molten iron dephosphorizing method |
| CN103757174A (en) * | 2013-11-30 | 2014-04-30 | 南京梅山冶金发展有限公司 | Full-automatic control system and control method for converter bottom blowing |
| CN103882176A (en) * | 2014-03-25 | 2014-06-25 | 东北大学 | On-line dynamic optimization control method for converter steelmaking process based on data driving |
| CN104630410A (en) * | 2015-02-10 | 2015-05-20 | 东北大学 | Real-time dynamic converter steelmaking quality prediction method based on data analysis |
| CN105907914A (en) * | 2016-06-22 | 2016-08-31 | 北京科技大学 | Steel-making method for prolonging service life of bottom-blowing oxygen converter through CO2 |
| CN106048129A (en) * | 2016-07-11 | 2016-10-26 | 湖南华菱涟源钢铁有限公司 | Converter high-carbon low-phosphorous end-point control metallurgy method under condition of phosphorous molten iron in blast furnace |
Non-Patent Citations (1)
| Title |
|---|
| 王茂华等: "转炉终点控制技术及应用", 《山东冶金》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109097523A (en) * | 2018-08-31 | 2018-12-28 | 钢铁研究总院 | A kind of double slag process smelting process |
| CN110699510A (en) * | 2019-09-17 | 2020-01-17 | 柳州钢铁股份有限公司 | Converter efficient dephosphorization method controlled in stages according to molten pool temperature |
| WO2021073015A1 (en) * | 2019-10-16 | 2021-04-22 | 北京科技大学 | Converter co2-o2 mixed injection smelting method and dynamic temperature control method in fire-point region |
| US11788160B2 (en) | 2019-10-16 | 2023-10-17 | University Of Science And Technology Beijing | Converter CO2—O2 mixed injection smelting method and method of dynamically controlling fire point area temperature |
| CN111500815A (en) * | 2020-05-28 | 2020-08-07 | 北京科技大学 | Bottom blowing O2-CO2Dynamic control method for steelmaking process of CaO converter |
| CN111500815B (en) * | 2020-05-28 | 2021-06-11 | 北京科技大学 | Bottom blowing O2-CO2Dynamic control method for steelmaking process of CaO converter |
| WO2021237946A1 (en) * | 2020-05-28 | 2021-12-02 | 北京科技大学 | Method for dynamic control of bottom-blowing o2-co2-cao converter steel-making process |
| CN113654663A (en) * | 2021-07-19 | 2021-11-16 | 长春工业大学 | Online continuous temperature measurement system of AOD furnace and working method thereof |
| CN113654663B (en) * | 2021-07-19 | 2023-11-10 | 长春工业大学 | Online continuous temperature measurement system of AOD furnace and working method thereof |
| CN114854929A (en) * | 2022-05-07 | 2022-08-05 | 北京科技大学 | Converter blowing CO 2 Method for dynamically predicting molten steel components and temperature in real time |
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