CN114635004A - Method for shortening smelting period of converter - Google Patents
Method for shortening smelting period of converter Download PDFInfo
- Publication number
- CN114635004A CN114635004A CN202210245652.6A CN202210245652A CN114635004A CN 114635004 A CN114635004 A CN 114635004A CN 202210245652 A CN202210245652 A CN 202210245652A CN 114635004 A CN114635004 A CN 114635004A
- Authority
- CN
- China
- Prior art keywords
- time
- smelting
- converter
- period
- steel
- 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.)
- Pending
Links
- 238000003723 Smelting Methods 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000004904 shortening Methods 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 30
- 239000010959 steel Substances 0.000 claims abstract description 30
- 238000009628 steelmaking Methods 0.000 claims abstract description 12
- 238000004458 analytical method Methods 0.000 claims abstract description 6
- 238000010079 rubber tapping Methods 0.000 claims description 17
- 239000002893 slag Substances 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000007664 blowing Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000007405 data analysis Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 230000006872 improvement Effects 0.000 claims description 2
- 238000005457 optimization Methods 0.000 claims description 2
- 238000011084 recovery Methods 0.000 claims description 2
- 238000005070 sampling Methods 0.000 claims description 2
- 238000007619 statistical method Methods 0.000 claims description 2
- 230000008030 elimination Effects 0.000 claims 1
- 238000003379 elimination reaction Methods 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 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
-
- 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
Abstract
The invention discloses a method for shortening a converter smelting period, which relates to the technical field of steel production, carries out real-time online digital tracking and analysis on converter steelmaking smelting steps, and takes measures of shortening charging time, improving smelting intensity, reasonably controlling terminal C and P components and the like in a targeted manner on the basis of quickly positioning out restriction factors influencing the steelmaking smelting period, thereby realizing the shortening of the steelmaking smelting period; to the problem that the smelting time is long, the efficiency is low, the energy consumption is high among the converter steelmaking smelting process, through dismantling the smelting cycle and monitor each step, discover not enough, constantly optimize, shorten the smelting cycle, realize the efficiency benefit and promote.
Description
Technical Field
The invention relates to the technical field of steel production, in particular to a method for shortening a smelting period of a converter.
Background
The smelting time of the converter is a determining factor of the yield of the converter and is also a key measure for reducing energy consumption. At present, the main index of the converter at home and abroad is the smelting time of the converter, and the time is the main index determining the yield and the economic benefit maximization. However, the power condition of the existing converter smelting process is poor, the molten iron ratio is high due to insufficient heat sources, and the smelting period is long.
Disclosure of Invention
Aiming at the technical problems, the invention overcomes the defects of the prior art and provides a method for shortening the smelting period of a converter, which comprises the following steps:
(1) smelting period definition and smelting steel period step disassembly
Smelting period: the smelting period of the converter means that the charging starting time of the converter is the starting time of the smelting period, and the charging starting time of the next converter is the smelting time of the previous converter;
disassembling the steps of the smelting period: the method comprises the following steps of dividing the method into feeding time, converting time, equal sample time, tapping time and slag splashing time, wherein the feeding time refers to signal starting from feeding preparation to converter gun descending, the converting time refers to carrying out gun lifting from gun descending and air valve opening converting to converting ending, the equal sample time refers to sampling, sample conveying, detecting and result discharging, the tapping time refers to angle recovery from pouring of molten steel into a steel ladle and converter after the detection result is qualified, and the slag splashing time refers to all operations for protecting a furnace body from slag splashing;
(2) collection of smelting step time
The charging time starts to collect and time by a PLC charging signal until a converter first time gets off a gun signal, the blowing time starts to get off the gun signal by the PLC converter until a converter raises the gun signal, the sample waiting time starts to raise the gun for the last time until a steel tapping signal ends, the steel tapping time starts to get off the steel tapping signal by the steel tapping signal, and the slag splashing time ends to get off the charging signal of the next furnace by the steel tapping signal;
(3) analysis and improvement of smelting step time
Carrying out statistical analysis on the time of each step by using the same steel grade through a computer background, finding out the longest time, the shortest time and the average time, analyzing the experience of the shortest time, and taking the experience as an operation standard to improve the reason of the longest time so as to continuously improve the reason and shorten the smelting period;
(4) real-time monitoring and early warning of smelting steps and smelting steel cycle
The method comprises the steps of real-time monitoring and early warning of smelting steps and smelting and steel-making periods of the same steel grade, wherein the average smelting period of the same steel grade in the previous month is a standard smelting period, the average smelting step time is a standard step of each step, when the smelting period or each step exceeds the standard, a system automatically gives an alarm to remind post personnel to adjust in time, and the smelting period is continuously shortened through big data analysis and optimization.
The technical scheme of the invention is further defined as follows:
in the method for shortening the smelting period of the converter, the charging time comprises tilting preparation of the converter, scrap steel adding time, molten iron adding time and converter angle adjustment.
In the method for shortening the smelting period of the converter, the charging time is based on the first gun feeding.
In the method for shortening the smelting period of the converter, the blowing time is based on the last gun lifting.
The method for shortening the smelting period of the converter has the advantages that the longest time includes long driving waiting time, and driving scheduling is optimized to eliminate driving waiting.
The beneficial effects of the invention are:
(1) aiming at the problems of long smelting time, low efficiency and high energy consumption in the converter steelmaking process, the smelting period is disassembled and each step is monitored, so that the defects are found, the smelting period is continuously optimized, the efficiency benefit is improved, and the energy consumption is reduced;
(2) the invention carries out real-time online digital tracking and analysis on the converter steelmaking smelting steps, and takes measures of shortening charging time, improving smelting intensity, reasonably controlling terminal C and P components and the like in a targeted manner on the basis of quickly positioning the restriction factors influencing the steelmaking cycle, thereby realizing the shortening of the steelmaking cycle.
Detailed Description
According to the method for shortening the smelting period of the converter, real-time online digital tracking and analysis are carried out on the smelting steps of converter steelmaking, measures such as shortening charging time, improving smelting intensity and reasonably controlling end points C and P components are taken in a targeted manner on the basis of quickly positioning restriction factors influencing the smelting period of steelmaking, and the smelting period is shortened:
(1) the steel ladle turnover rate is improved by reasonably scheduling after problems are found, wherein the furnace number is 22301056, the steel type Q345-1-Si is adopted, the total smelting time is 39 minutes, the tapping time is over 6.5 minutes, and the steel ladle can not be kept up after analysis, so that the steel ladle needs to be waited during tapping.
(2) The steel tapping time is shortened by improving the turnover rate of the steel ladle:
the furnace number is 22101087, the steel grade Q345-1-Si, the total smelting time is 37.5 minutes, the tapping time is reduced by 5 minutes, and the improved smelting period of the steel grade is also shortened from 39 minutes to 37.5 minutes.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (5)
1. A method for shortening the smelting period of a converter is characterized by comprising the following steps: the method comprises the following steps:
(1) smelting period definition and smelting steel period step disassembly
Smelting period: the smelting period of the converter means that the charging starting time of the converter is the starting time of the smelting period, and the charging starting time of the next converter is the smelting time of the previous converter;
disassembling the steps of the smelting period: the method comprises the following steps of dividing the method into feeding time, converting time, equal sample time, tapping time and slag splashing time, wherein the feeding time refers to signal starting from feeding preparation to converter gun descending, the converting time refers to carrying out gun lifting from gun descending and air valve opening converting to converting ending, the equal sample time refers to sampling, sample conveying, detecting and result discharging, the tapping time refers to angle recovery from pouring of molten steel into a steel ladle and converter after the detection result is qualified, and the slag splashing time refers to all operations for protecting a furnace body from slag splashing;
(2) collection of smelting step time
The method comprises the following steps that the charging time starts to acquire and time to a converter first gun-off signal by a PLC (programmable logic controller) charging signal, the converting time starts to a converter gun-lifting signal by the PLC converter gun-off signal and ends, the sample waiting time starts to a steel-tapping signal by the last gun-lifting, the steel-tapping time starts to a steel-tapping signal and ends, and the slag splashing time ends to a charging signal of the next converter by the steel-tapping signal;
(3) analysis and improvement of smelting step time
Carrying out statistical analysis on the time of each step by using the same steel grade through a computer background, finding out the longest time, the shortest time and the average time, analyzing the experience of the shortest time, and taking the experience as an operation standard to improve the reason of the longest time so as to continuously improve the reason and shorten the smelting period;
(4) real-time monitoring and early warning of smelting steps and smelting steel cycle
The method comprises the steps of real-time monitoring and early warning of smelting steps and smelting and steel-making periods of the same steel grade, wherein the average smelting period of the same steel grade in the previous month is a standard smelting period, the average smelting step time is a standard step of each step, when the smelting period or each step exceeds the standard, a system automatically gives an alarm to remind post personnel to adjust in time, and the smelting period is continuously shortened through big data analysis and optimization.
2. The method for shortening the smelting period of the converter according to claim 1, which is characterized in that: the charging time comprises tilting preparation of the converter, scrap steel adding time, molten iron adding time and converter angle adjustment.
3. The method for shortening the smelting period of the converter according to claim 1, which is characterized in that: the feeding time is based on the first gun falling.
4. The method for shortening the smelting period of the converter according to claim 1, which is characterized in that: and the blowing time is based on the last gun lifting.
5. The method for shortening the smelting period of the converter according to claim 1, which is characterized in that: the reason of the longest time comprises long driving waiting time, optimized driving scheduling and elimination of driving waiting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210245652.6A CN114635004A (en) | 2022-03-14 | 2022-03-14 | Method for shortening smelting period of converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210245652.6A CN114635004A (en) | 2022-03-14 | 2022-03-14 | Method for shortening smelting period of converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114635004A true CN114635004A (en) | 2022-06-17 |
Family
ID=81947659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210245652.6A Pending CN114635004A (en) | 2022-03-14 | 2022-03-14 | Method for shortening smelting period of converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114635004A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004815A (en) * | 2010-11-01 | 2011-04-06 | 昆明理工大学 | Method for optimizing 'hot metal can of system' interface mode in blast furnace-converter section in steel enterprise |
| CN103642972A (en) * | 2013-12-16 | 2014-03-19 | 新余钢铁集团有限公司 | Intelligent optimization control system for tapping temperature of converter |
-
2022
- 2022-03-14 CN CN202210245652.6A patent/CN114635004A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004815A (en) * | 2010-11-01 | 2011-04-06 | 昆明理工大学 | Method for optimizing 'hot metal can of system' interface mode in blast furnace-converter section in steel enterprise |
| CN103642972A (en) * | 2013-12-16 | 2014-03-19 | 新余钢铁集团有限公司 | Intelligent optimization control system for tapping temperature of converter |
Non-Patent Citations (2)
| Title |
|---|
| 崔猛: "转炉低铁耗高效率冶炼技术研究", 《天津冶金》 * |
| 聂景峰: "K-OBM-S转炉二级计算机控制系统", 《机械工程与自动化》 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220617 |
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| RJ01 | Rejection of invention patent application after publication |