CN106834593B - A method of RH refining furnace decarbonization process data are determined with reference heats method - Google Patents
A method of RH refining furnace decarbonization process data are determined with reference heats method Download PDFInfo
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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
- C21C5/32—Blowing from above
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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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/068—Decarburising
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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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention belongs to technical field of ferrous metallurgy, in particular it relates to a kind of method for determining RH refining furnace decarbonization process data with reference heats method.The present invention determines RH refining furnace decarbonization process data by reference to heat method, by acquiring operation data, establish database, quick and precisely with computer processing data, the completely alternative mode for determining decarburization and temperature increasing schedule with artificial experience at present, manual operation, the unstability of judgement are solved, to realize the carbon and temperature, Promoting Standardized operation for accurately controlling RH smelting endpoint molten steel.The present invention does not need complicated calculating and accurate model parameter, and study need to only be gone to refine the refinery practice data of heat, and decarbonization process data migration is good.
Description
Technical field
The invention belongs to technical field of ferrous metallurgy, in particular it relates to which a kind of establish RH essence with reference heats method
The method of furnace decarbonization process data.
Background technique
Now with the mass production of the raising of steel mill's variety steel ratio, especially mild steel, ultra-low-carbon steel (such as IF steel),
Requirement to RH vacuum decarburization controlled level is also higher and higher.
RH vacuum refining process occurs in closed vacuum chamber, and high-temperature metallurgical reaction process belongs to half black box, this makes
People are difficult to its understanding, and the reaction mechanism of refining process, reflex action can only all be judged by analyzing and estimating.Judgement
It is accurate whether be heavily dependent on the experience of operator, have very big accidental rate in operation, due to operator's level
It is irregular, how the case where frequently appearing in carbon and temperature exceeding standard in RH smelting endpoint molten steel appearance improves the steady of operation
Qualitative, this important task is completed dependent on computer model.
But current RH decarburization model is by dividing RH equipment for vacuum refining and produced on-site ultra-low-carbon steel technique
Then analysis is established RH vacuum decarburization mechanism using vacuum decarburization thermodynamics and dynamics theory, and then develops and be suitable for this enterprise
The decarburization model of the RH equipment for vacuum refining of industry, such decarburization model calculation method is complicated, the accuracy heavy dependence meter of calculating
Calculate the adaptability of model parameter in formula.Its model parameter is changed with production technology, need to could be reached by long-felt
To the accuracy requirement of production, and each steel mill equipment and technological parameter it is different so that Model suitability is poor, model
It is required to grope model parameter for a long time after transplanting.
Summary of the invention
In order to solve the above problem, the present invention provides a kind of simple and practical and wide adaptability RH refining furnace decarbonization process parameter
Determine method.
When RH is refined, the primary condition for influencing RH refining furnace molten steel is main are as follows: into carbon in RH refining furnace molten steel, oxygen content,
The additional amount of temperature and slag modification agent.
In the present invention, the refinery practice of RH refining furnace are as follows: refining furnace recyclegas flow system, vacuum chamber pressure drop system,
Blowing oxygen quantity, oxygen blast opportunity, decarburization time, the aluminum amount that decarburization initial stage is heating addition.
After refining, the target temperature and target carbon content of molten steel are the smelting result of the furnace.
If the primary condition of the furnace molten steel is identical, refinery practice is identical, the smelting result of the furnace is identical.
The specific technical solution of the present invention is as follows:
The method that RH refining furnace decarbonization process parameter is determined with reference heats method of the invention, comprising the following steps:
(1) following data is acquired, establishes database using computer:
A: the steel grade number of smelting；
B: heat (batch) number；
C: Metal Weight, unit ton；It is denoted as C；
D: the dissolved oxygen content in converter smelting endpoint molten steel, unit ppm；It is denoted as D；
E: the carbon content in converter smelting endpoint molten steel, unit ppm；It is denoted as E；
F: the temperature of converter smelting endpoint molten steel, unit DEG C；It is denoted as F；
G: the additional amount of modification agent in converter tapping process, unit K g；It is denoted as G；
H: containing the additional amount of manganese alloy, unit K g in converter tapping process；It is denoted as H；Wherein, in the converter tapping process
The additional amount of manganese, unit K g；It is denoted as H1, H1For the sum of the manganese content of manganese alloy of addition, calculation formula are as follows: H1=Σ H* manganese closes
The mass percent of manganese in gold；
I:RH refining furnace enters the station steel content of oxygen dissolved in water, unit ppm；It is denoted as I；
J:RH refining furnace enters the station the temperature of molten steel, unit DEG C；It is denoted as J；
K:RH refining furnace recyclegas flow system；
The vacuum chamber pressure drop system of l:RH refining furnace；
M:RH refining furnace blowing oxygen quantity, unit m3；It is denoted as M；
N:RH refining furnace oxygen blast opportunity；
O:RH refining furnace decarburization initial stage is the aluminum amount of heating addition, units/kg；It is denoted as O；
P:RH refining furnace decarburization time, unit min；It is denoted as P；
Q: the target temperature of the furnace molten steel, unit DEG C；It is denoted as Q；
R: the target carbon content of the furnace molten steel, unit ppm；It is denoted as R；
After s:RH refining furnace decarburization plus aluminum amount, units/kg are denoted as S；
(2) when the acquisition data of lane database some steel grade are accumulate to >=400 heat, the database is for described in determining
The RH refining furnace decarbonization process data of steel grade；
(3) after converter smelting, database is opened, search in database to meet in converter smelting endpoint molten steel simultaneously
Carbon content, oxygen content, the additional amount of slag modification agent in converter tapping process, RH enter the station after dissolved oxygen content in molten steel
Data deviation with the target carbon content of molten steel with the converter molten steel 10%~15%, meanwhile, it is identical to meet steel grade number
And RH enters the station the temperature of molten steel and heat of the target temperature with the data deviation of the converter molten steel at 3~5 DEG C of molten steel；
(4) by the blowing oxygen quantity (m in all heats for meeting above-mentioned condition3), decarburization time (min), decarburization initial stage be rise
After the aluminum amount (kg) and decarburization of temperature addition plus aluminum amount (kg) takes blowing oxygen quantity (m of the arithmetic average as this heat3), it is de-
Carbon time (min), decarburization initial stage are to add aluminum amount (kg) after heating up the aluminum amount (kg) and decarburization added；It is searched from step (3)
Rope to all heats in select the immediate heat of carbon content in converter smelting endpoint molten steel with this heat, and should
The RH refining furnace recyclegas flow system of the heat selected, vacuum chamber pressure drop system, oxygen blast opportunity as this heat RH
Refining furnace recyclegas flow system, vacuum chamber pressure drop system, oxygen blast opportunity；
(5) after the refining of this heat, if the carbon content of molten steel and temperature in target zone, by this heat
Refinery practice data are stored in database.
Method according to the present invention, wherein after step (3) described converter smelting, detected using revolving furnace sublance
The C of converter smelting endpoint molten steel, [O] content and temperature control the quantity of slag under converter in converter tapping process, record converter tapping
Process detects [O] content and temperature of the molten steel that enters the station after adding slag modification dosage and alloy amount, RH to enter the station, and inputs the furnace molten steel
Target temperature and target carbon content.
Method according to the present invention, wherein the carbon content target zone of step (5) described molten steel is the mesh with molten steel
Carbon content deviation is marked 10%~15%, the temperature objectives range of the molten steel is the aim carbon content deviation with molten steel 3~5
℃。
Method according to the present invention, the present invention can use Excel table, Structured Query Language
The usual manners such as software establish database.
Beneficial effects of the present invention:
1, the present invention determines RH refining furnace decarbonization process data by reference to heat method, by acquiring operation data, establishes
Database, it is quick and precisely with computer processing data, completely alternative to determine decarburization and temperature increasing schedule with artificial experience at present
Mode solves manual operation, the unstability of judgement, to realize the carbon for accurately controlling RH smelting endpoint molten steel and temperature, push away
Into standardized work.
2, the present invention determines RH refining furnace decarbonization process data by reference to heat method, and process data adaptability is good, this hair
Bright referenced heat is the qualified furnace of the carbon content made by reasonable refinery practice refine in endpoint molten steel and temperature
Secondary, reasonable refinery practice is by practice test, and determining process data is accurate and reliable.
3, the present invention by reference to heat method determines RH refining furnace decarbonization process data, does not need complicated calculating and accurate
Model parameter, need to only go study to refine the refinery practice data of heat, decarbonization process data migration is good.
Specific embodiment
Below with DDQ grades of deep-draw grade steel, for the determination of RH refining furnace decarbonization process data and application that steel grade number is LHG2,
The present invention is further described.
The method for determining RH refining furnace decarbonization process data using reference heats method of the invention, including converter smelting knot
Beam is controlled under converter in converter tapping process using C, [O] content and the temperature of revolving furnace sublance detection converter smelting endpoint molten steel
The quantity of slag, and record [O] content that the molten steel that enters the station is detected after converter tapping process adds slag modification dosage and alloy amount, RH to enter the station
And temperature.
Steps are as follows:
(1) following data is acquired, establishes database using computer:
A: the steel grade number of smelting；
B: heat (batch) number；
C: Metal Weight, unit ton；It is denoted as C；
D: the dissolved oxygen content in converter smelting endpoint molten steel, unit ppm；It is denoted as D；
E: the carbon content in converter smelting endpoint molten steel, unit ppm；It is denoted as E；
F: the temperature of converter smelting endpoint molten steel, unit DEG C；It is denoted as F；
G: the additional amount of modification agent in converter tapping process, unit K g；It is denoted as G；
H: containing the additional amount of manganese alloy, unit K g in converter tapping process；It is denoted as H；Wherein, in the converter tapping process
The additional amount of manganese, unit K g；It is denoted as H1, H1For the sum of the manganese content of manganese alloy of addition, calculation formula are as follows: H1=Σ H* manganese closes
The mass percent of manganese in gold；
I:RH refining furnace enters the station steel content of oxygen dissolved in water, unit ppm；It is denoted as I；
J:RH refining furnace enters the station the temperature of molten steel, unit DEG C；It is denoted as J；
K:RH refining furnace recyclegas flow system；
The vacuum chamber pressure drop system of l:RH refining furnace；
M:RH refining furnace blowing oxygen quantity, unit m3；It is denoted as M；
N:RH refining furnace oxygen blast opportunity；
O:RH refining furnace decarburization initial stage is the aluminum amount of heating addition, units/kg；It is denoted as O；
P:RH refining furnace decarburization time, unit min；It is denoted as P；
Q: the target temperature of the furnace molten steel, unit DEG C；It is denoted as Q；
R: the target carbon content of the furnace molten steel, unit ppm；It is denoted as R；
After s:RH refining furnace decarburization plus aluminum amount, units/kg are denoted as S；
(2) when the acquisition data of lane database some steel grade are accumulate to >=400 heat, the database is for described in determining
The RH refining furnace decarbonization process data of steel grade；
(3) after converter smelting, C, [O] content and the temperature of converter smelting endpoint molten steel are detected using revolving furnace sublance,
The quantity of slag under converter is controlled in converter tapping process, is recorded converter tapping process and is added slag modification dosage and alloy amount, RH enters the station
[O] content and temperature of the molten steel that enters the station are detected afterwards, and input the target temperature and target carbon content of the furnace molten steel；
Database is opened, the carbon content that can meet simultaneously in converter smelting endpoint molten steel in database is searched for, oxygen content, turns
The target carbon content of dissolved oxygen content and molten steel after the additional amount of slag modification agent in furnace tapping process, RH enter the station in molten steel
Data deviation with the converter molten steel 10%~15%, meanwhile, the temperature for the molten steel that meets that steel grade number is identical and RH enters the station
Heat of the target temperature of degree and molten steel with the data deviation of the converter molten steel at 3~5 DEG C；
(4) by the blowing oxygen quantity (m in all heats for meeting above-mentioned condition3), decarburization time (min), decarburization initial stage be rise
After the aluminum amount (kg) and decarburization of temperature addition plus aluminum amount (kg) takes blowing oxygen quantity (m of the arithmetic average as this heat3), it is de-
Carbon time (min), decarburization initial stage are to add aluminum amount (kg) after heating up the aluminum amount (kg) and decarburization added；It is searched from step (3)
Rope to all heats in select the immediate heat of carbon content in converter smelting endpoint molten steel with this heat, and should
The RH refining furnace recyclegas flow system of heat, vacuum chamber pressure drop system, oxygen blast opportunity are followed as the RH refining furnace of this heat
Ring gas flow system, vacuum chamber pressure drop system, oxygen blast opportunity；
(5) after furnace refining, if the carbon content of molten steel and temperature in target zone, by the refining of the furnace
Process data is stored in database.
Embodiment 1
After heat (batch) number 4-3134 ladle is transported into RH refining furnace, acquire data: steel grade number is LHG2, in converter smelting endpoint molten steel
Dissolved oxygen be 842 (ppm), carbon 0.041%, molten steel weigh 133.6 (tons), in converter tapping process modification agent additional amount
300 (kg), middle manganese additional amount are 120 (kg).
Using determining the fixed temperature probe of oxygen to survey enter the station dissolved oxygen content 368 (ppm), liquid steel temperature in molten steel of RH to be 1612 DEG C,
After calling database, the suitable molten steel of 2 furnaces of heat (batch) number 4-2223 and heat (batch) number 4-2564, the converter smelting endpoint of this two furnaces steel are searched out
Dissolution after carbon content, oxygen content in molten steel, the additional amount of the slag modification agent in converter tapping process, RH enter the station in molten steel
Oxygen content, the target carbon content of molten steel with the data deviation of heat (batch) number 4-3134 molten steel within ± 10%, steel grade number it is identical and
The temperature deviation for the temperature of molten steel, the target temperature of molten steel and heat (batch) number 4-3134 molten steel of entering the station is within ± 3 DEG C, to this two furnaces steel
Blowing oxygen quantity (m in RH refining process3), decarburization time (min), decarburization initial stage be the aluminum amount (kg) of heating addition, decarburization
After plus aluminum amount (kg) take arithmetic average are as follows: RH refining furnace blowing oxygen quantity 80m3, it is RH refining furnace decarburization time 21 (min), de-
Carbon initial stage is the aluminum amount 120 (kg) of heating addition, adds aluminum amount 115 (kg) after decarburization.
Carbon content in this two furnaces steel in 4-2223 and 4-3134 converter smelting endpoint molten steel is closest, by the furnace of 4-2223
Secondary RH refining furnace recyclegas flow system, vacuum chamber pressure drop system, oxygen blast opportunity as 4-3134 heat RH refining furnace
Recyclegas flow system, vacuum chamber pressure drop system, oxygen blast opportunity.
The molten steel of heat (batch) number 4-3134 RH refining furnace blowing oxygen quantity 80m in RH refining process3, RH refining furnace decarburization time 21
(min), decarburization initial stage is the aluminum amount 120 (kg) of heating addition, using RH refining furnace recyclegas identical with heat (batch) number 4-2223
The refinery practices such as flow system, vacuum chamber pressure drop system, oxygen blast opportunity, after the completion of refining, steel quality is qualified, by heat (batch) number 4-
3134 refinery practice data are stored in database.
Related heat process data see the table below 1.
1 embodiment of table, 1 heat process data
Embodiment 2
After heat (batch) number 4-3369 ladle is transported into RH refining furnace, acquire data: steel grade number is LHG2, in converter smelting endpoint molten steel
Dissolved oxygen be 795 (ppm), carbon 0.040%, molten steel weigh 132 (tons), in converter tapping process modification agent additional amount 300
(kg), middle manganese additional amount is 120 (kg).
Using determining the fixed temperature probe of oxygen to survey enter the station dissolved oxygen content 342 (ppm), liquid steel temperature in molten steel of RH to be 1608 DEG C,
After calling database, the suitable molten steel of 3 furnaces of heat (batch) number 4-2223,4-2638 and heat (batch) number 4-3134, the converter smelting of this 3 furnace steel are searched out
After carbon content, oxygen content in refining endpoint molten steel, the additional amount of the slag modification agent in converter tapping process, RH enter the station in molten steel
Dissolved oxygen content, molten steel target carbon content and heat (batch) number 4-3369 molten steel data deviation within ± 15%, steel grade phase
The temperature deviation of same and the molten steel that enters the station temperature, the target temperature of molten steel and heat (batch) number 4-3369 molten steel is right within ± 5 DEG C
Blowing oxygen quantity (m of this two furnaces steel in RH refining process3), the aluminum amount that decarburization time (min), decarburization initial stage are heating addition
(kg), aluminum amount (kg) is added to take arithmetic average after decarburization are as follows: RH refining furnace blowing oxygen quantity 79m3, RH refining furnace decarburization time 20
(min), decarburization initial stage is the aluminum amount 115 (kg) of heating addition, adds aluminum amount 119 (kg) after decarburization.
Carbon content in this two furnaces steel in 4-2638 and 4-3369 converter smelting endpoint molten steel is closest, by the furnace of 4-2638
Secondary RH refining furnace recyclegas flow system, vacuum chamber pressure drop system, oxygen blast opportunity as 4-3369 heat RH refining furnace
Recyclegas flow system, vacuum chamber pressure drop system, oxygen blast opportunity.
The molten steel of heat (batch) number 4-3369 RH refining furnace blowing oxygen quantity 80m in RH refining process3, RH refining furnace decarburization time 20
(min), decarburization initial stage is the aluminum amount 115 (kg) of heating addition, after decarburization plus aluminum amount 119 (kg), using with heat (batch) number 4-
The refinery practices such as 2638 identical RH refining furnace recyclegas flow systems, vacuum chamber pressure drop system, oxygen blast opportunity, refining are completed
Afterwards, steel quality is qualified, and the refinery practice data of heat (batch) number 4-3369 are stored in database.
Related heat process data see the table below 2.
2 embodiment of table, 2 heat process data
Non-elaborated part of the present invention belongs to techniques well known.
Certainly, the present invention can also there are many embodiments, without deviating from the spirit and substance of the present invention, are familiar with
Those skilled in the art can disclosure according to the present invention make various corresponding changes and modifications, but these it is corresponding change and
Deformation all should belong to scope of protection of the claims of the invention.
Claims (3)
1. a kind of method for establishing RH refining furnace decarbonization process data with reference heats method, comprising the following steps:
(1) following data is acquired, establishes database using computer:
A: the steel grade number of smelting；
B: heat (batch) number；
C: Metal Weight, unit ton；It is denoted as C；
D: the dissolved oxygen content in converter smelting endpoint molten steel, unit ppm；It is denoted as D；
E: the carbon content in converter smelting endpoint molten steel, unit ppm；It is denoted as E；
F: the temperature of converter smelting endpoint molten steel, unit DEG C；It is denoted as F；
G: the additional amount of modification agent in converter tapping process, unit K g；It is denoted as G；
H: containing the additional amount of manganese alloy, unit K g in converter tapping process；It is denoted as H；Wherein, manganese in the converter tapping process
Additional amount, unit K g；It is denoted as H1, H1For the sum of the manganese content of manganese alloy of addition, calculation formula are as follows: H1In=Σ H* manganese alloy
Manganese mass percent；
I:RH refining furnace enters the station steel content of oxygen dissolved in water, unit ppm；It is denoted as I；
J:RH refining furnace enters the station the temperature of molten steel, unit DEG C；It is denoted as J；
K:RH refining furnace recyclegas flow system；
The vacuum chamber pressure drop system of l:RH refining furnace；
M:RH refining furnace blowing oxygen quantity, unit m3；It is denoted as M；
N:RH refining furnace oxygen blast opportunity；
O:RH refining furnace decarburization initial stage is the aluminum amount of heating addition, units/kg；It is denoted as O；
P:RH refining furnace decarburization time, unit min；It is denoted as P；
Q: the target temperature of the furnace molten steel, unit DEG C；It is denoted as Q；
R: the target carbon content of the furnace molten steel, unit ppm；It is denoted as R；
After s:RH refining furnace decarburization plus aluminum amount, units/kg are denoted as S；
(2) when the acquisition data of lane database some steel grade are accumulate to >=400 heat, the database is for determining the steel grade
RH refining furnace decarbonization process data；
(3) after converter smelting, database is opened, searches for the carbon that can meet simultaneously in converter smelting endpoint molten steel in database
Dissolved oxygen content and steel after content, oxygen content, the additional amount of slag modification agent in converter tapping process, RH enter the station in molten steel
Data deviation of the target carbon content of water with the converter molten steel 10%~15%, meanwhile, meet steel grade number it is identical and
RH enters the station the temperature of molten steel and heat of the target temperature with the data deviation of the converter molten steel at 3~5 DEG C of molten steel；
(4) by the blowing oxygen quantity in all heats for meeting above-mentioned condition, decarburization time, decarburization initial stage be heating addition aluminum amount with
After decarburization plus aluminum amount takes arithmetic average to add as the blowing oxygen quantity of this heat, decarburization time, decarburization initial stage for heating
Aluminum amount and decarburization after plus aluminum amount；The converter smelting with this heat is selected from all heats searched in step (3)
The immediate heat of carbon content in endpoint molten steel is refined, and by the RH refining furnace recyclegas flow system of the heat selected
Degree, vacuum chamber pressure drop system, oxygen blast opportunity as this heat RH refining furnace recyclegas flow system, vacuum chamber pressure drop system
Degree, oxygen blast opportunity；
(5) after the refining of this heat, if the carbon content of molten steel and temperature in target zone, by the refining of this heat
Process data is stored in database.
2. the method according to claim 1, wherein utilizing converter pair after step (3) described converter smelting
Rifle detects C, [O] content and the temperature of converter smelting endpoint molten steel, controls the quantity of slag under converter in converter tapping process, records and turn
Furnace tapping process detects [O] content and temperature of the molten steel that enters the station after adding slag modification dosage and alloy amount, RH to enter the station, and inputting should
The target temperature and target carbon content of furnace molten steel.
3. the method according to claim 1, wherein the carbon content target zone of step (5) described molten steel be with
For the aim carbon content deviation of molten steel 10%~15%, the temperature objectives range of the molten steel is inclined with the target carbon content of molten steel
Difference is at 3~5 DEG C.
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| CN108342540B (en) * | 2018-04-18 | 2019-12-03 | 武汉科技大学 | A kind of steel mill RH refining equipment automatic control system |
| CN109777923B (en) * | 2019-02-28 | 2020-12-15 | 北京首钢股份有限公司 | RH refined alloy adding control method |
| CN112863609A (en) * | 2019-11-12 | 2021-05-28 | 宝信软件(武汉)有限公司 | Method and device for calculating oxygen blowing amount and coolant amount in converter steelmaking |
| CN111334636B (en) * | 2020-03-27 | 2022-04-08 | 宝钢湛江钢铁有限公司 | Converter end point dynamic control method and system based on sublance detection |
| CN111581190B (en) * | 2020-04-01 | 2024-01-26 | 本钢板材股份有限公司 | Converter smelting process guidance and accident early warning method based on historical data |
| CN113430333B (en) * | 2021-07-13 | 2022-04-12 | 北京科技大学 | Intelligent stable smelting control method for ladle refining furnace |
| CN113930573B (en) * | 2021-09-08 | 2023-05-09 | 山东钢铁股份有限公司 | Bottom blowing instantaneous flow dynamic control method of top-bottom combined blown converter |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103382514A (en) * | 2013-07-19 | 2013-11-06 | 东北大学 | System and method for forecasting molten steel components in RH refining process in online manner |
| CN103866088A (en) * | 2014-03-24 | 2014-06-18 | 莱芜钢铁集团有限公司 | Method for determining amount of slagging material and deoxidized alloy added into LF (Low-Frequency) refining furnace by use of reference heat method |
| CN104451037A (en) * | 2014-12-18 | 2015-03-25 | 马钢(集团)控股有限公司 | Device and method for detecting temperature of RH refined liquid steel on line in real time |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103382514A (en) * | 2013-07-19 | 2013-11-06 | 东北大学 | System and method for forecasting molten steel components in RH refining process in online manner |
| CN103866088A (en) * | 2014-03-24 | 2014-06-18 | 莱芜钢铁集团有限公司 | Method for determining amount of slagging material and deoxidized alloy added into LF (Low-Frequency) refining furnace by use of reference heat method |
| CN104451037A (en) * | 2014-12-18 | 2015-03-25 | 马钢(集团)控股有限公司 | Device and method for detecting temperature of RH refined liquid steel on line in real time |
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