CN115323104A - Automatic slag splashing furnace protection method for converter - Google Patents
Automatic slag splashing furnace protection method for converter Download PDFInfo
- Publication number
- CN115323104A CN115323104A CN202210870539.7A CN202210870539A CN115323104A CN 115323104 A CN115323104 A CN 115323104A CN 202210870539 A CN202210870539 A CN 202210870539A CN 115323104 A CN115323104 A CN 115323104A
- Authority
- CN
- China
- Prior art keywords
- slag
- steps
- following
- slag splashing
- nitrogen
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- Granted
Links
- 239000002893 slag Substances 0.000 title claims abstract description 159
- 238000000034 method Methods 0.000 title claims abstract description 45
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 154
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 77
- 238000007664 blowing Methods 0.000 claims abstract description 75
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000001301 oxygen Substances 0.000 claims abstract description 48
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 48
- 238000010079 rubber tapping Methods 0.000 claims abstract description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 24
- 230000001276 controlling effect Effects 0.000 claims description 24
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 239000013049 sediment Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000007921 spray Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
-
- 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
- C21C5/44—Refractory linings
- C21C5/441—Equipment used for making or repairing linings
- C21C5/443—Hot fettling; Flame gunning
-
- 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
- C21C5/36—Processes yielding slags of special composition
-
- 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
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention discloses a method for automatically splashing slag and protecting a converter, which is characterized by comprising the following steps of: the method comprises the following steps: the method comprises the following steps: controlling the amount of slag in the converter after tapping; step two: adjusting the internal components of the slag in the converter; step three: slag splashing and furnace protection for the first time; step four: the secondary slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 1000mm, and blowing nitrogen; controlling the nitrogen blowing time to be 20s; step five: the third slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 800mm, and blowing nitrogen; controlling the nitrogen blowing time to be 100s; step six: the last slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 700mm, and blowing nitrogen, wherein the nitrogen blowing time is controlled to be 100s; step seven: and (5) checking the slag splashing condition of the furnace lining. This automatic sediment of splashing of converter protects stove mode adopts the science to splash the sediment and protects the stove technique, through the repeated sediment operation that splashes many times, not only avoids the stove inner wall trip to leak and hangs the sediment phenomenon, because the form that advances gradually many times has not only guaranteed to hang the even of sediment thickness moreover.
Description
Technical Field
The invention relates to the technical field of converter steelmaking, in particular to a method for automatically splashing slag and protecting a converter.
Background
The slag splashing furnace protection is that high-pressure nitrogen is sprayed out from a copper nozzle of an oxygen lance, saturated or supersaturated end slag is obtained by utilizing the MgO content in the final slag, and the slag is cooled and solidified on a furnace lining by high-pressure nitrogen blowing to form a slag splashing layer with a high melting point, thereby achieving the purpose of protecting furnace lining bricks. At present, in a new steel converter workshop in spring, the height of oxygen lance positions in the slag splashing process is accurately controlled, the control of nitrogen blowing time of each oxygen lance position is finely set, a set of slag splashing furnace protection control technology matched with the amount of slag remaining at the current terminal point is established, and the effect of full-automatic slag splashing is achieved.
The traditional slag splashing furnace protection technology is characterized in that the height of an oxygen lance position is manually controlled in the slag splashing furnace protection process, the difference of skill levels of post staff in an experience mode influences the effect of slag splashing furnace protection, the control of the oxygen lance position and the control of nitrogen blowing time of the lance position in the furnace top, the furnace body and the furnace bottom of a converter do not form a standard, the slag splashing furnace protection effect is directly influenced by high-pressure nitrogen pressure and flow, the slag splashing furnace protection effect is difficult to guarantee, the analysis is carried out in the traditional manual slag splashing mode, the requirement suitable for the existing slag splashing furnace protection technology is found, and manual intervention is reduced.
The purpose of the technology is to achieve the effect of automatic slag splashing for furnace protection through standardized operation, the final slag in the furnace is mainly cooled in the early stage of nitrogen blowing, the final slag is in a dilute state in the period of time, even if the slag splashes on the furnace lining, the adhesion capacity is limited, the longer the slag splashing time is, the more the slag hanging amount of the furnace lining is found in practice, the slag splashing at the bottom of the converter can be caused by long-time fixing of the gun position, the slag splashing is too much, the furnace bottom is caused to rise too fast, and on the other hand, the slag splashing time is too long, so that the production rhythm is influenced, and the key is that the automatic slag splashing system matched with a converter workshop is found.
Therefore, we propose a method for automatic slag splashing protection of a converter so as to solve the problems mentioned above.
Disclosure of Invention
The invention aims to provide an automatic slag splashing furnace protection method for a converter, which aims to solve the problem of poor slag splashing furnace protection effect in the current market, which is provided by the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a method for automatic slag splashing protection of a converter comprises the following steps:
the method comprises the following steps: controlling the amount of slag in the converter after tapping;
step two: the internal components of the furnace slag in the converter are adjusted, so that subsequent slag splashing is facilitated, and the method comprises the following specific steps:
s1, adding a slag splashing and regulating agent to deoxidize slag;
s2, adjusting the height of the oxygen lance to 600mm, blowing nitrogen for 20S, and removing ferrous oxide;
step three: the first slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 1500mm, and blowing nitrogen; the nitrogen blowing time is controlled to be 20s.
Step four: the secondary slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 1000mm, and blowing nitrogen; controlling the nitrogen blowing time to be 20s;
step five: the third slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 800mm, and blowing nitrogen; controlling the nitrogen blowing time to be 100s;
step six: the last slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 700mm, and blowing nitrogen, wherein the nitrogen blowing time is controlled to be 100s;
step seven: and (4) checking whether the slag splashing condition of the furnace lining needs local spray repair, if the slag splashing condition meets the requirement, pouring the slag into a slag tank, and ending the slag splashing operation.
Preferably, the formula of the slag control amount in the first step is as follows:
QS＝0.301×W 0.583
in the formula: QS is the proper slag remaining amount of the converter, t
W is the converter nominal tonnage, t.
Preferably, the control amount of the slag of the small and medium-sized converters is controlled to be 10-20mm of the thickness of the slag layer.
Preferably, the slag composition in the second step is controlled as follows:
FeO：18.49％-22.68％；
Si02：10.69％-17.95％；
Cao：46.91％-52.11％；
MgO：8.3％-15.04％；
R：2.8％-3.2％。
preferably, the height range of the oxygen lance in the second step is 500-700mm, and the nitrogen blowing time is controlled to be 18-22s.
Preferably, the height of the oxygen lance in the second step ranges from 1400 mm to 1800mm, and the nitrogen blowing time is controlled to be 18 to 25s.
Preferably, the height of the oxygen lance in the second step ranges from 900 mm to 1200mm, and the nitrogen blowing time is controlled to be 18 to 22s.
Preferably, the height of the oxygen lance in the second step ranges from 750 mm to 850mm, and the nitrogen blowing time is controlled to be 80-120s.
Preferably, the height of the oxygen lance in the second step ranges from 600mm to 700mm, and the nitrogen blowing time is controlled to be 90 to 130s.
Compared with the prior art, the invention has the beneficial effects that:
this automatic slag splashing furnace protection mode of converter adopts the science to splash the slag and protects the stove technique, through the repeated slag splashing operation many times, not only avoid the furnace inner wall trip to leak and hang the sediment phenomenon, and because the form that advances gradually many times, not only guaranteed to hang the even of sediment thickness, and also the effectual slag fly-off converter when having avoided splashing the sediment, increase the security, it is stable to splash the sediment wall built-up, can improve the converter age and reduce refractory material consumption by a wide margin, reduce and build the stove number of times and improve the converter operating rate, improve steel output, have great positive economic benefits to the converter steelmaking.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The invention provides a technical scheme that: a method for automatic slag splashing protection of a converter comprises the following steps:
the method comprises the following steps: controlling the amount of slag inside the converter after tapping according to QS =0.301 XW 0.583 Calculating to obtain 3t;
step two: the internal components of the furnace slag in the converter are adjusted, so that subsequent slag splashing is facilitated, and the method comprises the following specific steps:
s1, adding a slag splashing and regulating agent to deoxidize slag;
s2, adjusting the height of the oxygen lance to 600mm, blowing nitrogen for 20S, and removing ferrous oxide;
the slag composition is controlled as follows:
FeO：22.68％；
Si02：17.95％；
Cao：47.37％；
MgO：9％；
R：3.0％；
step three: the first slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 1500mm, and blowing nitrogen; controlling the nitrogen blowing time to be 20s;
step four: the secondary slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 1000mm, and blowing nitrogen; controlling the nitrogen blowing time to be 20s;
step five: the third slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 800mm, and blowing nitrogen; controlling the nitrogen blowing time to be 100s;
step six: the last slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 700mm, and blowing nitrogen, wherein the nitrogen blowing time is controlled to be 100s;
step seven: and (4) checking whether the slag splashing condition of the furnace lining needs local spray repair, if the slag splashing condition meets the requirement, pouring the slag into a slag tank, and ending the slag splashing operation.
Example two
The invention provides a technical scheme that: a method for automatic slag splashing protection of a converter comprises the following steps:
the method comprises the following steps: after tapping, controlling the amount of slag in the converter, and controlling the thickness of the slag to be 15mm;
step two: the internal components of the furnace slag in the converter are adjusted, so that subsequent slag splashing is facilitated, and the method comprises the following specific steps:
s1, adding a slag splashing and regulating agent to deoxidize slag;
s2, adjusting the height of the oxygen lance to be 630mm, blowing nitrogen, controlling the nitrogen blowing time to be 22S, and removing ferrous oxide;
the slag composition is controlled as follows:
FeO：20％；
Si02：16％；
Cao：50％；
MgO：11.2％；
R：2.8％；
step three: the first slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 1480mm, and blowing nitrogen; controlling the nitrogen blowing time to be 19s;
step four: the secondary slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 980mm, and blowing nitrogen; controlling the nitrogen blowing time to be 19s;
step five: the third slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 790mm, and blowing nitrogen; controlling the nitrogen blowing time to be 105s;
step six: the last slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 650mm, and blowing nitrogen, wherein the nitrogen blowing time is controlled to 98s;
step seven: and (4) checking whether the slag splashing condition of the furnace lining needs to be locally sprayed and repaired, if the slag splashing condition meets the requirement, pouring the slag into a slag tank, and finishing the slag splashing operation.
EXAMPLE III
The invention provides a technical scheme that: a method for automatic slag splashing protection of a converter comprises the following steps:
the method comprises the following steps: after tapping, controlling the quantity of slag in the converter, wherein the thickness of the slag is controlled to be 19mm;
step two: the internal components of the furnace slag in the converter are adjusted, so that subsequent slag splashing is facilitated, and the method comprises the following specific steps:
s1, adding a slag splashing and regulating agent to deoxidize slag;
s2, adjusting the height of the oxygen lance to be 640mm, blowing nitrogen for 23S, and removing ferrous oxide;
the slag composition was controlled as follows:
FeO：19％；
Si02：17.37％；
Cao：48.63％；
MgO：11.89％；
R：3.11％；
step three: the first slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 1500mm, and blowing nitrogen; controlling the nitrogen blowing time to be 20s;
step four: the secondary slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 990mm, and blowing nitrogen; controlling the nitrogen blowing time to be 19s;
step five: the third slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 800mm, and blowing nitrogen; controlling the nitrogen blowing time to be 105s;
step six: the last slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 640mm, and blowing nitrogen, wherein the nitrogen blowing time is controlled to be 100s;
step seven: and (4) checking whether the slag splashing condition of the furnace lining needs to be locally sprayed and repaired, if the slag splashing condition meets the requirement, pouring the slag into a slag tank, and finishing the slag splashing operation.
Example four
The invention provides a technical scheme that: a method for automatic slag splashing protection of a converter comprises the following steps:
the method comprises the following steps: after tapping, controlling the quantity of the slag in the converter, wherein the thickness of the slag is controlled to be 20mm;
step two: the internal components of the furnace slag in the converter are adjusted, so that subsequent slag splashing is facilitated, and the method comprises the following specific steps:
s1, adding a slag splashing and regulating agent to deoxidize slag;
s2, adjusting the height of the oxygen lance to be 620mm, blowing nitrogen for 23S, and removing ferrous oxide;
the slag composition is controlled as follows:
FeO：21.5％；
Si02：12.3％；
Cao：50.2％；
MgO：12.8％；
R：3.2％；
step three: the first slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 1480mm, and blowing nitrogen; controlling the nitrogen blowing time to be 19s;
step four: the secondary slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 1000mm, and blowing nitrogen; controlling the nitrogen blowing time to be 21s;
step five: the third slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 790mm, and blowing nitrogen; controlling the nitrogen blowing time to be 110s;
step six: the last slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 690mm, and blowing nitrogen with the nitrogen blowing time controlled to 115s;
step seven: and (4) checking whether the slag splashing condition of the furnace lining needs local spray repair, if the slag splashing condition meets the requirement, pouring the slag into a slag tank, and ending the slag splashing operation.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (9)
1. A method for automatic slag splashing and furnace protection of a converter is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: controlling the amount of the slag in the converter after tapping;
step two: the internal components of the furnace slag in the converter are adjusted, so that subsequent slag splashing is facilitated, and the method comprises the following specific steps:
s1, adding a slag splashing and regulating agent to deoxidize slag;
s2, adjusting the height of the oxygen lance to 600mm, blowing nitrogen for 20S, and removing ferrous oxide;
step three: the first slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 1500mm, and blowing nitrogen; the nitrogen blowing time is controlled to be 20s.
Step four: the secondary slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 1000mm, and blowing nitrogen; controlling the nitrogen blowing time to be 20s;
step five: the third slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 800mm, and blowing nitrogen; controlling the nitrogen blowing time to be 100s;
step six: the last slag splashing furnace protection comprises the following steps: adjusting the height of the oxygen lance to 700mm, and blowing nitrogen, wherein the nitrogen blowing time is controlled to be 100s;
step seven: and (4) checking whether the slag splashing condition of the furnace lining needs to be locally sprayed and repaired, if the slag splashing condition meets the requirement, pouring the slag into a slag tank, and finishing the slag splashing operation.
2. The method for automatic slag splashing protection of the converter according to claim 1, wherein the method comprises the following steps: the formula of the slag control quantity in the first step is as follows:
WS＝0.301×W 0.583
in the formula: QS is the proper slag remaining quantity of the converter, t
W is the converter nominal tonnage, t.
3. The method for automatic slag splashing protection of the converter according to claim 2, characterized in that: the slag control amount of the small and medium-sized converters is controlled to be 10-20mm in slag layer thickness.
4. The method for automatic slag splashing protection of the converter according to claim 1, wherein the method comprises the following steps: the slag components in the step two are controlled as follows:
FeO：18.49％-22.68％；
Si02：10.69％-17.95％；
Cao：46.91％-52.11％；
MgO：8.3％-15.04％；
R：2.8％-3.2％。
5. the method for automatic slag splashing protection of the converter according to claim 4, wherein the method comprises the following steps: in the second step, the height range of the oxygen lance is 500-700mm, and the nitrogen blowing time is controlled to be 18-22s.
6. The method for automatic slag splashing protection of the converter according to claim 1, wherein the method comprises the following steps: the height range of the oxygen lance in the second step is 1400-1800mm, and the nitrogen blowing time is controlled to be 18-25s.
7. The method for automatic slag splashing protection of the converter according to claim 1, wherein the method comprises the following steps: the height range of the oxygen lance in the second step is 900-1200mm, and the nitrogen blowing time is controlled to be 18-22s.
8. The method for automatic slag splashing protection of the converter according to claim 1, characterized in that: and in the second step, the height range of the oxygen lance is 750-850mm, and the nitrogen blowing time is controlled to be 80-120s.
9. The method for automatic slag splashing protection of the converter according to claim 1, wherein the method comprises the following steps: the height range of the oxygen lance in the second step is 600-700mm, and the nitrogen blowing time is controlled to be 90-130s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210870539.7A CN115323104B (en) | 2022-07-23 | 2022-07-23 | Automatic slag splashing furnace protection method for converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210870539.7A CN115323104B (en) | 2022-07-23 | 2022-07-23 | Automatic slag splashing furnace protection method for converter |
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| Publication Number | Publication Date |
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| CN115323104A true CN115323104A (en) | 2022-11-11 |
| CN115323104B CN115323104B (en) | 2024-03-19 |
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|---|---|---|---|---|
| CN103937927A (en) * | 2014-03-21 | 2014-07-23 | 宝钢集团新疆八一钢铁有限公司 | Slag regulating agent for converter |
| CN106591531A (en) * | 2016-12-09 | 2017-04-26 | 河钢股份有限公司承德分公司 | Method for preventing converter oxygen lances from adhering to steel slag |
| CN112708717A (en) * | 2020-12-15 | 2021-04-27 | 阳春新钢铁有限责任公司 | Method for smelting low-phosphorus molten steel by single-converter duplex method |
| CN112981033A (en) * | 2021-02-04 | 2021-06-18 | 新余钢铁股份有限公司 | Automatic slag splashing control method and system for converter |
| CN113186369A (en) * | 2021-04-01 | 2021-07-30 | 邢台钢铁有限责任公司 | Slag splashing furnace protection method |
| WO2022001874A1 (en) * | 2020-06-29 | 2022-01-06 | 宝山钢铁股份有限公司 | Slag-splashing fettling method |
-
2022
- 2022-07-23 CN CN202210870539.7A patent/CN115323104B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103937927A (en) * | 2014-03-21 | 2014-07-23 | 宝钢集团新疆八一钢铁有限公司 | Slag regulating agent for converter |
| CN106591531A (en) * | 2016-12-09 | 2017-04-26 | 河钢股份有限公司承德分公司 | Method for preventing converter oxygen lances from adhering to steel slag |
| WO2022001874A1 (en) * | 2020-06-29 | 2022-01-06 | 宝山钢铁股份有限公司 | Slag-splashing fettling method |
| CN112708717A (en) * | 2020-12-15 | 2021-04-27 | 阳春新钢铁有限责任公司 | Method for smelting low-phosphorus molten steel by single-converter duplex method |
| CN112981033A (en) * | 2021-02-04 | 2021-06-18 | 新余钢铁股份有限公司 | Automatic slag splashing control method and system for converter |
| CN113186369A (en) * | 2021-04-01 | 2021-07-30 | 邢台钢铁有限责任公司 | Slag splashing furnace protection method |
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| CN115323104B (en) | 2024-03-19 |
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