CN111380492A - Method for measuring 120t converter gun position - Google Patents
Method for measuring 120t converter gun position Download PDFInfo
- Publication number
- CN111380492A CN111380492A CN201811651827.3A CN201811651827A CN111380492A CN 111380492 A CN111380492 A CN 111380492A CN 201811651827 A CN201811651827 A CN 201811651827A CN 111380492 A CN111380492 A CN 111380492A
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- CN
- China
- Prior art keywords
- lance
- calculating
- oxygen lance
- value
- converter
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- 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.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (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 measuring the lance position of a 120t converter, 1) calculating the vertical distance L from a converter mouth to a liquid level by a thickness gauge according to measurement data0(ii) a 2) Lowering the oxygen lance to the horizontal position of the lance head and the furnace mouth, and determining the value h of an oxygen lance encoder at the moment0(ii) a 3) Calculating the oxygen lance gap L according to design parameters; 4) calculating the blowing gun position h according to the three values; calculating the formula: h = h0‑L0+ L; note: h-blow gun position (variable); h is0-the value (fixed value) of the oxygen lance encoder when the lance head is horizontal to the lance opening; l is0The thickness gauge calculates the vertical distance (variable) from the furnace mouth to the liquid level; l-lance gap (design value).
Description
Technical Field
The invention relates to a method for measuring the lance position of a 120t converter.
Background
The accurate oxygen lance position is mastered in the smelting process of a 120t converter in a steel plant, and the method has important significance for improving the hit rate of the converter end point and reducing splashing accidents. The original technology for measuring the lance position of the oxygen lance of the 120t converter is to manually insert a measuring lance rod into a spray hole of the oxygen lance to measure the lance position. The technical means has complex operation, needs special personnel to go upstairs, and has high danger coefficient, large labor intensity and a plurality of potential safety hazards when operating personnel works at the oxygen lance hole. Meanwhile, due to scrap steel in the furnace, the gun rod is frequently bent, so that the measurement error is large, and no actual reference is provided.
Disclosure of Invention
The invention aims to provide a method for measuring the lance position of a 120t converter, which can master the accurate lance position of an oxygen lance in the smelting process of the converter and has important significance for improving the hit rate of the converter end point and reducing splashing accidents.
The object of the invention is achieved by a method for determining the lance position of a 120t converter, 1) calculating the vertical distance L from the furnace mouth to the liquid level from a thickness gauge according to the measurement data0；
2) Lowering the oxygen lance to the horizontal position of the lance head and the furnace mouth, and determining the value h of an oxygen lance encoder at the moment0；
3) Calculating the oxygen lance gap L according to design parameters;
4) calculating the blowing gun position h according to the three values;
calculating the formula: h = h0- L0+ L；
Note: h-blow gun position (variable);
h0-the value (fixed value) of the oxygen lance encoder when the lance head is horizontal to the lance opening;
L0the thickness gauge calculates the vertical distance (variable) from the furnace mouth to the liquid level;
l-lance gap (design value).
The method is based on an advanced furnace lining measuring instrument, and according to accurate furnace measuring data, a measuring system can accurately calculate the vertical height of a furnace mouth from the liquid level of the molten steel only by setting related parameters such as loading amount, molten steel density and the like. After the height from the furnace mouth to the liquid level is measured, the oxygen lance is lowered to the level of the lance head and the furnace mouth, the height of the oxygen lance encoder at the moment is accurately read, and the height of the oxygen lance encoder at the time of the horizontal of the lance head and the liquid level can be accurately calculated according to the two numerical values. And finally, the position of the oxygen lance head and the liquid level and the oxygen lance gap required by blow opening are the blow opening lance position. The method depends on a precise thickness measuring instrument, the measuring result is accurate and reliable, the operation is simple, potential safety hazards do not exist, and the labor intensity of operators is reduced.
The method of the invention completely meets the operation requirement through multiple operations on site, saves the gun measuring time of 20 minutes, and has accurate and scientific result. Is suitable for popularization and application, and the method is simple and has strong operability. The method can be completed by using the existing precise instrument in the factory, has low cost, does not generate additional equipment purchasing cost, and has higher practical value.
Drawings
The present invention will be described in further detail below with reference to the accompanying drawings.
FIG. 1 is a schematic view of the lance position of the oxygen lance of the present invention.
Detailed Description
A method for determining 120t converter lance position is disclosed, as shown in figure 1, 1) calculating the vertical distance L from a converter mouth to a liquid level by a thickness gauge according to measurement data0；
2) Lowering the oxygen lance to the horizontal position of the lance head and the furnace mouth, and determining the value h of an oxygen lance encoder at the moment0；
3) Calculating the oxygen lance gap L according to design parameters;
4) calculating the blowing gun position h according to the three values;
calculating the formula: h = h0- L0+ L；
Note: h-blow gun position (variable);
h0-the value (fixed value) of the oxygen lance encoder when the lance head is horizontal to the lance opening;
L0the thickness gauge calculates the vertical distance (variable) from the furnace mouth to the liquid level;
l-lance gap (design value).
Claims (1)
1. A method for measuring the 120t converter lance position is characterized by comprising the following steps:
1) according to the measured data, the vertical distance L from the furnace mouth to the liquid level is calculated by a thickness gauge0；
2) Lowering the oxygen lance to the lance head and the furnace mouth waterFlat position, determining the value h of the oxygen lance encoder at the moment0；
3) Calculating the oxygen lance gap L according to design parameters;
4) calculating the blowing gun position h according to the three values;
calculating the formula: h = h0- L0+ L；
Note: h is the blow gun position and variable;
h0when the lance head is horizontal to the lance opening, the numerical value and the fixed value of the oxygen lance encoder are obtained;
L0calculating the vertical distance and variable from the furnace mouth to the liquid level by the thickness gauge;
l-oxygen lance clearance, design value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811651827.3A CN111380492A (en) | 2018-12-31 | 2018-12-31 | Method for measuring 120t converter gun position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811651827.3A CN111380492A (en) | 2018-12-31 | 2018-12-31 | Method for measuring 120t converter gun position |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111380492A true CN111380492A (en) | 2020-07-07 |
Family
ID=71216844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811651827.3A Pending CN111380492A (en) | 2018-12-31 | 2018-12-31 | Method for measuring 120t converter gun position |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111380492A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114058776A (en) * | 2021-11-08 | 2022-02-18 | 阳春新钢铁有限责任公司 | Converter gun position correction model and method |
| CN114593610A (en) * | 2022-03-04 | 2022-06-07 | 爵翔(上海)能源科技有限公司 | Spray gun, position adjusting method thereof and metal smelting equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06172839A (en) * | 1992-01-16 | 1994-06-21 | Kawasaki Steel Corp | Operation of converter type smelting reduction furnace |
| JP3290844B2 (en) * | 1995-03-23 | 2002-06-10 | 新日本製鐵株式会社 | Scrap iron dissolution method |
| CN201809382U (en) * | 2010-10-13 | 2011-04-27 | 莱芜钢铁集团有限公司 | Dual-encoder-based oxygen lance positioning system |
| CN204039433U (en) * | 2014-09-02 | 2014-12-24 | 河北钢铁股份有限公司承德分公司 | A kind of BOF Oxygen Lance Position measuring apparatus |
| CN108411060A (en) * | 2018-06-14 | 2018-08-17 | 宝钢湛江钢铁有限公司 | A kind of method of coverter pig slagging with Lime stone steel-making control of lance position |
-
2018
- 2018-12-31 CN CN201811651827.3A patent/CN111380492A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06172839A (en) * | 1992-01-16 | 1994-06-21 | Kawasaki Steel Corp | Operation of converter type smelting reduction furnace |
| JP3290844B2 (en) * | 1995-03-23 | 2002-06-10 | 新日本製鐵株式会社 | Scrap iron dissolution method |
| CN201809382U (en) * | 2010-10-13 | 2011-04-27 | 莱芜钢铁集团有限公司 | Dual-encoder-based oxygen lance positioning system |
| CN204039433U (en) * | 2014-09-02 | 2014-12-24 | 河北钢铁股份有限公司承德分公司 | A kind of BOF Oxygen Lance Position measuring apparatus |
| CN108411060A (en) * | 2018-06-14 | 2018-08-17 | 宝钢湛江钢铁有限公司 | A kind of method of coverter pig slagging with Lime stone steel-making control of lance position |
Non-Patent Citations (2)
| Title |
|---|
| 孙兴一 等: "数控装置在本钢转炉改造中的应用", 《工业计量》 * |
| 张全: "宣钢120t转炉氧枪枪位模式优化实践", 《科技创新导报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114058776A (en) * | 2021-11-08 | 2022-02-18 | 阳春新钢铁有限责任公司 | Converter gun position correction model and method |
| CN114058776B (en) * | 2021-11-08 | 2023-01-13 | 阳春新钢铁有限责任公司 | Converter gun position correction method |
| CN114593610A (en) * | 2022-03-04 | 2022-06-07 | 爵翔(上海)能源科技有限公司 | Spray gun, position adjusting method thereof and metal smelting equipment |
| CN114593610B (en) * | 2022-03-04 | 2024-03-08 | 爵翔(上海)能源科技有限公司 | Spray gun, position adjusting method thereof and metal smelting equipment |
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Application publication date: 20200707 |
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