CN108754065B - Oxygen lance nozzle parameter selection system and method - Google Patents
Oxygen lance nozzle parameter selection system and method Download PDFInfo
- Publication number
- CN108754065B CN108754065B CN201810865514.1A CN201810865514A CN108754065B CN 108754065 B CN108754065 B CN 108754065B CN 201810865514 A CN201810865514 A CN 201810865514A CN 108754065 B CN108754065 B CN 108754065B
- Authority
- CN
- China
- Prior art keywords
- volume ratio
- furnace
- type
- parameters
- spray head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
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
- C21C5/30—Regulating or controlling the blowing
- C21C5/35—Blowing from above and through the bath
-
- 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
- C21C5/4606—Lances or injectors
- C21C5/462—Means for handling, e.g. adjusting, changing, coupling
-
- 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
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 system and a method for selecting parameters of an oxygen lance nozzle, which comprises the following steps: the thickness measuring probe is used for measuring the thickness of the converter body of the converter; the controller is used for pre-storing preset parameters, and the controller obtains the effective volume of the converter according to the thickness of the converter body; obtaining the furnace volume ratio of the converter according to the effective volume; and determining the parameters of the spray head of the oxygen lance according to the furnace volume ratio and the preset parameters. The system provided by the invention can ensure that the nozzle parameters of the oxygen lance conform to the furnace shape, and stabilize various indexes of the converter, thereby reducing the occurrence frequency of abnormal conditions such as splashing, drying returning and the like and avoiding potential safety hazards caused by the abnormal conditions.
Description
Technical Field
The invention relates to the technical field of steel making, in particular to a system and a method for selecting parameters of an oxygen lance nozzle.
Background
With the development of a top-bottom combined blown converter, an oxygen lance is used as key equipment for steelmaking, design parameters inevitably influence the quality of smelting technical and economic indexes, and the reasonable selection of oxygen lance nozzle parameters and the fine processing and manufacturing technology are necessary ways for realizing efficient and stable blowing.
At present, the parameters of the oxygen lance nozzle of the converter of each large steel plant are designed according to the new furnace masonry furnace type, and the process parameters are basically kept unchanged. However, the converter profile is changed continuously in the whole smelting process, and the change of the converter profile directly brings about the change of the converter capacity ratio. After the converter is normally smelted, the slag splashing layer of the converter is gradually thickened along with the start of slag splashing protection, the bottom of the converter is raised, the effective volume of the converter is reduced, and the furnace volume ratio is reduced; along with the increase of the furnace age, the refractory bricks of the furnace body gradually fall off under the influence of molten steel erosion, physical scouring and the like, and the effective volume and the furnace volume ratio are gradually increased. After the converter shape is changed, if the oxygen lance parameters are unchanged, the conditions are that the smelting process is seriously dried, difficult to melt slag, serious in splashing and the like, various indexes of the converter are seriously deteriorated, and large splashing even causes safety accidents such as flue sticking, personnel scalding and the like.
Therefore, how to stabilize various indexes of the converter becomes a technical problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
In view of this, the technical problem to be solved by the present invention is how to stabilize various indexes of the converter, and therefore, the present invention provides a system and a method for selecting parameters of an oxygen lance nozzle.
In order to achieve the purpose, the invention provides the following technical scheme:
an oxygen lance tip parameter selection system comprising:
the thickness measuring probe is used for measuring the thickness of the converter body of the converter; and
the controller is used for pre-storing preset parameters, and the controller obtains the effective volume of the converter according to the thickness of the converter body; obtaining the furnace volume ratio of the converter according to the effective volume; and determining the parameters of the spray head of the oxygen lance according to the furnace volume ratio and the preset parameters.
Preferably, in the above-described system for selecting lance tip parameters, the tip parameters include throat diameter, exit diameter, included angle, and Mach number.
Preferably, in the selection system of oxygen lance nozzle parameters, the preset parameters comprise a nozzle type and a furnace volume ratio, and the corresponding relationship between the nozzle type and the furnace volume ratio is as follows:
| spray head type | Furnace volume ratio | Throat mm | Outlet mm | Angle of inclination | Mach number |
| Smooth and steady type | 0.85-0.87 | 35.6 | 47.2 | 13 | 2.05 |
| Low splash type | 0.85-0.82 | 35.2 | 47.4 | 13.5 | 2.1 |
| Slag melting mould | 0.8-0.82 | 36.1 | 46.9 | 13 | 2 |
| High efficiency type | ＞0.87 | 34.8 | 47.2 | 14 | 2.1 |
| Dephosphorizing type | / | 31.7 | 36.7 | 14 | 1.7 |
Determining the parameters of the oxygen lance nozzle according to the furnace volume ratio and the preset parameters as follows:
and determining the spray head parameters of the oxygen lance according to the furnace volume ratio and the corresponding relation between the type of the preset spray head and the furnace volume ratio.
Preferably, in the selection system of the oxygen lance nozzle parameters, the type of the nozzle is determined according to the corresponding relation between the furnace age and the furnace volume ratio; the furnace age and the furnace volume ratio have the corresponding relationship as follows:
the invention also discloses a method for selecting the parameters of the oxygen lance nozzle, which applies any one of the systems for selecting the parameters of the oxygen lance nozzle, and the method comprises the following steps:
measuring the thickness of the converter body of the converter;
obtaining the effective volume of the converter according to the thickness of the converter body;
obtaining the furnace volume ratio of the converter according to the effective volume;
and determining the parameters of the spray head of the oxygen lance according to the furnace volume ratio and the preset parameters.
Preferably, in the above method of selecting lance tip parameters, the tip parameters include throat diameter, exit diameter, included angle, and Mach number.
Preferably, in the method for selecting the parameters of the oxygen lance nozzle, the preset parameters comprise a nozzle type and a furnace volume ratio, and the corresponding relationship between the nozzle type and the furnace volume ratio is as follows:
| spray head type | Furnace volume ratio | Throat mm | Outlet mm | Angle of inclination | Mach number |
| Smooth and steady type | 0.85-0.87 | 35.6 | 47.2 | 13 | 2.05 |
| Low splash type | 0.85-0.82 | 35.2 | 47.4 | 13.5 | 2.1 |
| Slag melting mould | 0.8-0.82 | 36.1 | 46.9 | 13 | 2 |
| High efficiency type | ＞0.87 | 34.8 | 47.2 | 14 | 2.1 |
| Dephosphorizing type | / | 31.7 | 36.7 | 14 | 1.7 |
Determining the parameters of the oxygen lance nozzle according to the furnace volume ratio and the preset parameters as follows:
and determining the spray head parameters of the oxygen lance according to the furnace volume ratio and the corresponding relation between the type of the preset spray head and the furnace volume ratio.
Preferably, in the method for selecting the parameters of the oxygen lance nozzle, the type of the nozzle is determined according to the corresponding relation between the furnace age and the furnace volume ratio; the furnace age and the furnace volume ratio have the corresponding relationship as follows:
according to the technical scheme, the system provided by the invention can ensure that the nozzle parameters of the oxygen lance conform to the furnace shape, and various indexes of the converter are stabilized, so that the occurrence frequency of abnormal conditions such as splashing, drying returning and the like is reduced, and potential safety hazards caused by the abnormal conditions are avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a system for selecting parameters of an oxygen lance nozzle according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a method for selecting parameters of an oxygen lance nozzle according to an embodiment of the present invention;
wherein, 100 is a thickness measuring probe, 200 is a controller.
Detailed Description
Therefore, the core of the invention is to provide a system for selecting parameters of the oxygen lance nozzle so as to stabilize various indexes of the converter.
The embodiments described below do not limit the contents of the invention described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.
Referring to fig. 1, the system for selecting parameters of an oxygen lance nozzle disclosed in the embodiments of the present invention comprises:
the thickness gauge is used for measuring the thickness of the converter body of the converter; the thickness gauge measures with a laser thickness measuring probe, an
The controller is used for pre-storing preset parameters, and the controller obtains the effective volume of the converter according to the thickness of the converter body; obtaining the furnace volume ratio of the converter according to the effective volume; and determining the parameters of the spray head of the oxygen lance according to the furnace volume ratio and the preset parameters.
The system provided by the invention can ensure that the nozzle parameters of the oxygen lance conform to the furnace shape, and stabilize various indexes of the converter, thereby reducing the occurrence frequency of abnormal conditions such as splashing, drying returning and the like and avoiding potential safety hazards caused by the abnormal conditions.
The parameters of the spray nozzle comprise the diameter of a throat opening, the diameter of an outlet, an included angle and Mach number, and the spray nozzle types of different types of oxygen lances are various. The preset parameters comprise a spray head type and a furnace volume ratio, and the corresponding relation between the spray head type and the furnace volume ratio is as follows:
| spray head type | Furnace volume ratio | Throat mm | Outlet mm | Angle of inclination | Mach number |
| Smooth and steady type | 0.85-0.87 | 35.6 | 47.2 | 13 | 2.05 |
| Low splash type | 0.85-0.82 | 35.2 | 47.4 | 13.5 | 2.1 |
| Slag melting mould | 0.8-0.82 | 36.1 | 46.9 | 13 | 2 |
| High efficiency type | ＞0.87 | 34.8 | 47.2 | 14 | 2.1 |
| Dephosphorizing type | / | 31.7 | 36.7 | 14 | 1.7 |
Determining the parameters of the oxygen lance nozzle according to the furnace volume ratio and the preset parameters as follows:
and determining the spray head parameters of the oxygen lance according to the furnace volume ratio and the corresponding relation between the type of the preset spray head and the furnace volume ratio.
The type of the spray head is determined according to the corresponding relation between the furnace age and the furnace volume ratio; the furnace age and the furnace volume ratio have the corresponding relationship as follows:
referring to fig. 2, the invention also discloses a method for selecting oxygen lance nozzle parameters, which applies any one of the above systems for selecting oxygen lance nozzle parameters, and the method comprises the following steps:
step S1: measuring the thickness of the converter body of the converter;
step S, 2: obtaining the effective volume of the converter according to the thickness of the converter body;
step S3: obtaining the furnace volume ratio of the converter according to the effective volume;
step S4: and determining the parameters of the spray head of the oxygen lance according to the furnace volume ratio and the preset parameters. The nozzle parameters include throat diameter, exit diameter, included angle and Mach number.
The preset parameters comprise a spray head type and a furnace volume ratio, and the corresponding relation between the spray head type and the furnace volume ratio is as follows:
| spray head type | Furnace volume ratio | Throat mm | Outlet mm | Angle of inclination | Mach number |
| Smooth and steady type | 0.85-0.87 | 35.6 | 47.2 | 13 | 2.05 |
| Low splash type | 0.85-0.82 | 35.2 | 47.4 | 13.5 | 2.1 |
| Slag melting mould | 0.8-0.82 | 36.1 | 46.9 | 13 | 2 |
| High efficiency type | ＞0.87 | 34.8 | 47.2 | 14 | 2.1 |
| Dephosphorizing type | / | 31.7 | 36.7 | 14 | 1.7 |
Determining the parameters of the oxygen lance nozzle according to the furnace volume ratio and the preset parameters as follows:
and determining the spray head parameters of the oxygen lance according to the furnace volume ratio and the corresponding relation between the type of the preset spray head and the furnace volume ratio.
Preferably, in the method for selecting the parameters of the oxygen lance nozzle, the type of the nozzle is determined according to the corresponding relation between the furnace age and the furnace volume ratio; the furnace age and the furnace volume ratio have the corresponding relationship as follows:
the previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (2)
1. An oxygen lance nozzle parameter selection system is characterized by comprising:
the thickness measuring probe is used for measuring the thickness of the converter body of the converter; and
the controller is used for pre-storing preset parameters, and the controller obtains the effective volume of the converter according to the thickness of the converter body; obtaining the furnace volume ratio of the converter according to the effective volume; determining spray head parameters of the oxygen lance according to the furnace volume ratio and preset parameters, wherein the spray head parameters comprise throat diameter, outlet diameter, included angle and Mach number, and the corresponding relation between the spray head type and the furnace volume ratio is as follows:
Determining the parameters of the oxygen lance nozzle according to the furnace volume ratio and the preset parameters as follows:
determining spray head parameters of the oxygen lance according to the furnace volume ratio and the corresponding relation between the type of the preset spray head and the furnace volume ratio;
the type of the spray head is determined according to the corresponding relation between the furnace age and the furnace volume ratio; the furnace age and the furnace volume ratio have the corresponding relationship as follows:
。
2. A method for selecting lance tip parameters, wherein the system for selecting lance tip parameters of claim 1 is applied, the method comprising:
measuring the thickness of the converter body of the converter;
obtaining the effective volume of the converter according to the thickness of the converter body;
obtaining the furnace volume ratio of the converter according to the effective volume;
determining the parameters of the spray head of the oxygen lance according to the furnace volume ratio and the preset parameters,
the nozzle parameters comprise throat diameter, outlet diameter, included angle and Mach number; the corresponding relation between the spray head type and the furnace volume ratio is as follows:
Determining the parameters of the oxygen lance nozzle according to the furnace volume ratio and the preset parameters as follows:
determining spray head parameters of the oxygen lance according to the furnace volume ratio and the corresponding relation between the type of the preset spray head and the furnace volume ratio;
the type of the spray head is determined according to the corresponding relation between the furnace age and the furnace volume ratio; the furnace age and the furnace volume ratio have the corresponding relationship as follows:
。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810865514.1A CN108754065B (en) | 2018-08-01 | 2018-08-01 | Oxygen lance nozzle parameter selection system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810865514.1A CN108754065B (en) | 2018-08-01 | 2018-08-01 | Oxygen lance nozzle parameter selection system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108754065A CN108754065A (en) | 2018-11-06 |
| CN108754065B true CN108754065B (en) | 2021-02-09 |
Family
ID=63968400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810865514.1A Active CN108754065B (en) | 2018-08-01 | 2018-08-01 | Oxygen lance nozzle parameter selection system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108754065B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111074038B (en) * | 2019-12-27 | 2022-03-08 | 安徽工业大学 | Converter slag splashing protection targeted slag splashing gun position control method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01129920A (en) * | 1987-11-13 | 1989-05-23 | Nkk Corp | Oxygen lance |
| CN201006882Y (en) * | 2007-02-06 | 2008-01-16 | 宝山钢铁股份有限公司 | Oxygen spray pistol of revolving furnace structure |
| JP2011084789A (en) * | 2009-10-16 | 2011-04-28 | Sumitomo Metal Ind Ltd | Converter blowing method |
| CN106435085B (en) * | 2016-09-23 | 2018-03-06 | 河钢股份有限公司邯郸分公司 | A kind of automation of converter steel-making oxygen rifle work oxygen that solves presses unstable method |
-
2018
- 2018-08-01 CN CN201810865514.1A patent/CN108754065B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108754065A (en) | 2018-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5553179B2 (en) | Reduction method of spitting in converter decarburization refining. | |
| KR101257472B1 (en) | Measuring apparatus for slag and measuring method thereof | |
| CN108754065B (en) | Oxygen lance nozzle parameter selection system and method | |
| CN111074038B (en) | Converter slag splashing protection targeted slag splashing gun position control method | |
| JP5277979B2 (en) | Top blowing lance for molten metal refining | |
| JP2016182612A (en) | Continuous casting method blowing inert gas from upper porous refractory and lower porous refractory | |
| JP2010188405A (en) | Method for reducing amount of residual steel in ladle | |
| JP2012086233A (en) | Bottom pouring type teeming tube and teeming method | |
| JP2012229487A (en) | Tuyere block | |
| JPH1112633A (en) | Lance for refining molten metal and refining method | |
| JP4760303B2 (en) | Secondary cooling method for continuous cast slabs | |
| JP3402133B2 (en) | Top blowing lance for refining and refining method | |
| JP4765372B2 (en) | Gas blown tuyere | |
| JP2008501854A (en) | Hot water outlet pipe | |
| US10512969B2 (en) | Up-drawing continuous casting method and up-drawing continuous casting apparatus | |
| JP2018178204A (en) | Top blown lance and blowing method for converter using the same | |
| CN117182059A (en) | Slab casting method | |
| KR101969105B1 (en) | Nozzle | |
| JP7230597B2 (en) | Pouring nozzle, twin roll type continuous casting apparatus, and method for producing thin cast slab | |
| JP6939828B2 (en) | Acid feeding refining method for molten iron | |
| JP5312089B2 (en) | Ladle with excellent residual steel reduction | |
| JP5573721B2 (en) | Method for suppressing refractory melt damage in vacuum degassing equipment | |
| JP2016131983A (en) | Continuous casting method for molten steel | |
| JP2584891B2 (en) | Operating method of bottom blown converter | |
| KR20230140142A (en) | Bottom blowing nozzle and method for processing molten metal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xue Zhi Inventor after: Guo Weida Inventor after: Li Qiangdu Inventor after: Ren Keshe Inventor after: Gao Zhibin Inventor before: Xue Zhi Inventor before: Guo Weida Inventor before: Li Qiangdu Inventor before: Ren Keshe Inventor before: Gao Zhibin |
|
| CB03 | Change of inventor or designer information | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210629 Address after: 250000 Shuangquan Road, Gangcheng District, Jinan City, Shandong Province Patentee after: LAIGANG GROUP YINSHAN SHAPED STEEL Co.,Ltd. Address before: 271104 No.99, Fuqian street, Gangcheng District, Laiwu City, Shandong Province Patentee before: SHANDONG IRON AND STEEL Co.,Ltd. |
|
| TR01 | Transfer of patent right |