CN104894328A - Converter endpoint phosphorus content forecasting method - Google Patents
Converter endpoint phosphorus content forecasting method Download PDFInfo
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- CN104894328A CN104894328A CN201410079183.0A CN201410079183A CN104894328A CN 104894328 A CN104894328 A CN 104894328A CN 201410079183 A CN201410079183 A CN 201410079183A CN 104894328 A CN104894328 A CN 104894328A
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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
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Abstract
The invention provides a converter endpoint phosphorus content forecasting method. The method comprises the following steps: communication between an OPC server and a laboratory, between an OPC server and a converter instrument PLC, between an OPC server and a sublance PLC and between an OPC server and a database and connection between a forecasting calculation system and the database are respectively established; after converter blowing begins, the converter endpoint phosphorus forecasting calculation system reads newest 500 converter data from the database and processes the read data to compose a matrix, and the phosphorus element is adopted as a Y column and a factor matrix is formed by other data in order to solve corresponding parameters of each column of the factors; and matrix operation is carried out according to a converter material provided by the abovePLCs and test data through the forecasting calculation system and the database to obtain the converter endpoint phosphorus content. The method improves the forecasting accuracy of the converter endpoint phosphorus content, effectively reduces steel type judgment amending problem induced by phosphorus element inconsistency, shortens the wait time from the converter endpoint to a tapping period, reduces the temperature loss of the endpoint molten steel and the liner erosion degree, improves the converter working rate and reduces energy consumption.
Description
Technical field
The invention belongs to process for making field, particularly a kind of forecasting procedure for converter smelting endpoint phosphorus content.
Background technology
Converter smelting endpoint controls accurately, is to improve steel quality, and release converter production capacity, reduces effective guarantee of converter smelting cost.Therefore, various terminal point control equipment and method are arisen at the historic moment.Such as, by temperature and the carbon content of sublance test converter steelmaking process, based on temperature and the carbon content of automatic Steelmaking dynamic Model Prediction converter terminal, smelting endpoint is again by oxygen voltage and the temperature of sublance test molten steel, calculate carbon content of molten steel by oxygen voltage, judge whether the carbon content of molten steel and temperature meet tapping requirement.Also have the flue gas changing conditions produced based on spectrometer analysis converter smelting, molten steel carbon component in prediction stove, determines the Converter Oxigen Blowing terminal moment.Sublance and mass spectrometer apparatus, in the application of converter, facilitate the fast development of automatic Steelmaking technology, improve the level of control of converter terminal.
But current automatic Steelmaking equipment and model are to the prediction of terminal and judgement, and main or liquid steel temperature and carbon content, technology has also been made significant headway, relatively ripe.And to the predictive model of other compositions of molten steel and means less.Do not conform to the real data changed the original sentence to from steelwork converter steel quality because the steel grade that molten steel carbon component and temperature do not conform to and cause to change the original sentence to ratio quite few, the defective major cause being steel grade and changing the original sentence to of converter molten steel phosphorus content.
Judgement for converter terminal phosphorus mainly contains four kinds of methods at present, but all has some limitations.One is rely on operator to observe flame in smelting process, judges slag making situation, empirically judges converter terminal phosphorus content.This method affects comparatively large by the experience of operator and Personal Skills, accuracy is not high.Two is under the condition having a sublance, when relying on procedural test, and the phosphorus content that sublance sample examination is analyzed, prediction converter terminal phosphorus.This method must have sublance device first, second must adjust the correlation parameter of sublance procedural test, ensures the success ratio of sampling.Also must ensure that the sample analysis of procedural test is complete at the end of converter terminal, could predict terminal phosphorus simultaneously.Three is after terminal takes sample, laboratory is sent to carry out assay, relate to sampling, cooling, sample presentation, sample preparation, assay link, required time is all at more than 5min, during this, high-temperature molten steel soaks furnace lining and corrodes in stove, lose temperature, impact, for steel rhythm, reduces converter operating efficiency simultaneously.Four is determine phosphorus probe by special, and analyze phosphorus content by the phosphorus electromotive force and sample examination measuring molten steel and contrast, accumulation mass data carries out regression analysis, obtains the functional relation between phosphorus electromotive force and molten steel phosphorus content.This method needs special phosphorus of determining to pop one's head in, special test set and instrument, the more important thing is that the phosphorus electromotive force due to molten steel is lower, must have higher susceptibility and stability to determining the thermo wires that phosphorus pops one's head in, also under test in industry at present, do not carry out industrial application.
Summary of the invention
The present invention aims to provide one can improve phosphorus content forecast accuracy, avoids steel grade to change the original sentence to, reduces temperature loss, improve the converter terminal phosphorus content forecasting procedure of converter operating rate.
For this reason, the solution that the present invention takes is:
A kind of converter terminal phosphorus content forecasting procedure, is characterized in that:
1, data communication and transmission system is set up:
A, set up a kind of agreement that laboratory and OPC(realize carrying out efficiently, flexibly between application program and various industrial control equipment reading and writing data) communication between server, carry out the transmission of molten iron, molten steel sample analytical data.
B, set up communication between converter instrument PLC and opc server, carry out the transmission of smelting basic data into stove molten iron, steel scrap weight, converter slag-making weight of material.
C, set up communication between sublance PLC and opc server, carry out the transmission of sublance test data.
D, set up opc server and database and the connection between forecast calculation system and database.
2, after bessemerizing beginning, converter terminal phosphorus forecast calculation system reads 500 up-to-date stove data from database, these data comprise: hot metal composition, enter stove molten iron and steel scrap weight, the various slag making materials quantity of converter steelmaking process, TSC(bessemerizes process sublance test probe, comprise thermometric, sampling, the function of crystal fixed carbon three aspects) test after blowing oxygen quantity, TSC and TSO(bessemerizes terminal sublance test probe, comprise thermometric, sampling, the function of oxygen determination electromotive force three aspects) test data, converter terminal phosphorus content and carbon oxygen amass.
3, the data that converter terminal phosphorus forecast calculation system will read form matrix, and be that Y arranges with phosphoric, remainder data composing factor matrix, solves the often corresponding parameter of the row factor.
4, when TSO test is carried out in converter, blowing oxygen quantity after the slag making materials kind add the hot metal composition of this stove, weight of molten iron, steel scrap kind and quantity, converter and respective amount, TSC test data, TSC test, nearest 5 stove carbon oxygen amass mean value, TSO test result is deposited into phosphorus forecast calculation system database by respective PLC.
5, phosphorus forecast calculation system database tries to achieve parameter according to the method for step (3), and the real data of integrating step (4), carries out matrix operation, tries to achieve converter terminal phosphorus content; And forecast result data is back to sublance PLC system, after sublance exports TSO data, export forecast phosphorus content immediately.
Beneficial effect of the present invention is:
1, overcome and artificially judge defect, improve converter terminal phosphorus content accuracy of the forecast, make forecast phosphorus content and assay phosphorus content deviation reach within 91.5% in the ratio of ± 0.003% scope, effectively minimizing changes the original sentence to problem because phosphoric does not conform to the steel grade caused.
2, shorten the waiting time during converter terminal to tapping, not only can reduce the temperature loss of endpoint molten steel, and the erosion degree of high-temperature molten steel to furnace lining can be reduced; Also can improve the operating rate of converter simultaneously, reduce the energy consumption of converter supporting system.
Embodiment
The particular content of converter terminal phosphorus content forecasting procedure of the present invention is:
First, set up data communication and transmission system, comprising:
A, set up communication between laboratory and opc server, to carry out the transmission of molten iron, molten steel sample analytical data.
B, set up communication between converter instrument PLC and opc server, carry out the transmission of smelting basic data into stove molten iron, steel scrap weight, converter slag-making weight of material.
C, set up communication between sublance PLC and opc server, carry out the transmission of sublance test data;
D, set up opc server and database and the connection between forecast calculation system and database.
Secondly, carry out data gathering, calculating solves and predicts, concrete grammar is:
1, after bessemerizing beginning, converter terminal phosphorus forecast calculation system reads 500 up-to-date stove data from database, and these data comprise: hot metal composition, to enter blowing oxygen quantity, TSC and TSO test data, converter terminal phosphorus content and carbon oxygen after stove molten iron and steel scrap weight, the various slag making materials quantity of converter steelmaking process, TSC test long-pending.And ensure that the various material weighing precision controlling of converter smelting are within ± 10kg; Converter smelting oxygen flow and pressure remained steady, oxygen actual flow and target flow deviation are no more than 10%, and true pressure and goal pressure deviation are no more than 5%.
2, the data that converter terminal phosphorus forecast calculation system will read form matrix, and be that Y arranges with phosphoric, remainder data composing factor matrix, solves the often corresponding parameter of the row factor.
3, when TSO test is carried out in converter, blowing oxygen quantity after the slag making materials kind add the hot metal composition of this stove, weight of molten iron, steel scrap kind and quantity, converter and respective amount, TSC test data, TSC test, nearest 5 stove carbon oxygen amass mean value, TSO test result is deposited into phosphorus forecast calculation system database by respective PLC.
4, phosphorus forecast calculation system database tries to achieve parameter according to the method for step 2, the real data of integrating step 3, carries out matrix operation, try to achieve converter terminal phosphorus content, and forecast result data is back to sublance PLC system, after sublance exports TSO data, export forecast phosphorus content immediately.
Below in conjunction with embodiment to data gathering of the present invention, calculating solves and forecasting process is described further.
Embodiment 1:
1, this stove essential information stored before oxygen blast:
Molten iron information: weight 245t, temperature 1375 DEG C, composition: C-4.65%, Si-0.43%, Mn-0.23%, P-0.122%, S-0.0034%.
Steel scrap information: ordinary scrap steel: 18.5t, the pig iron: 11.3t, slag steel: 4.6t, granulated iron: 2.7t.
Heat interval time: 66min.
Steel grade: SPHC; The steel grade finished product phosphorus upper limit: 0.020%.The average carbon oxygen of front 5 stove terminal amasss: 0.0027.
2, this stove essential information stored in oxygen blast process:
Slag making materials: quickened lime 9.2t; Light dolomite 3.2t; Unprocessed dolomite: 3.0t; Agglomerate: 7.5t.
Procedural test data: temperature-1611 DEG C, carbon-0.34%.
3, this stove essential information stored at the end of oxygen blast:
Oxygen blast total oxygen demand: 14566m
3;
Procedural test is to the blowing oxygen quantity of oxygen blast terminal: 1874m
3;
TSO test data: temperature-1679 DEG C, oxygen value-0.0661%.
4, this stove regression parameter reads:
Test pass signal for triggering signal with TSO, from database, read the data of nearly 500 stoves.The data of every stove comprise data in step 1-3 and converter terminal chemical examination phosphorus content, and be that Y arranges with end phosphorus content, all the other are Variable Factors, calculate the phosphorus forecast parameter of this stove.
5, phosphorus content is forecast:
According to each factor phosphorus forecast parameter that step 4 calculates, this stove data of integrating step 1-3, this stove of forecast calculation end phosphorus content 0.0144%.Be presented at interface, model foreground.And forecast phosphorus content is stored in database.
6, converter terminal assay phosphorus 0.0151%, is presented at interface, model foreground, and is stored in database by phosphorus content.
Claims (1)
1. a converter terminal phosphorus content forecasting procedure, is characterized in that:
(1) data communication and transmission system, is set up:
A, set up communication between laboratory and opc server, carry out the transmission of molten iron, molten steel sample analytical data:
B, set up communication between converter instrument PLC and opc server, carry out the transmission of smelting basic data into stove molten iron, steel scrap weight, converter slag-making weight of material;
C, set up communication between sublance PLC and opc server, carry out the transmission of sublance test data:
D, set up opc server and database and the connection between forecast calculation system and database;
(2) after, bessemerizing beginning, converter terminal phosphorus forecast calculation system reads 500 up-to-date stove data from database, and these data comprise: hot metal composition, to enter blowing oxygen quantity, TSC and TSO test data, converter terminal phosphorus content and carbon oxygen after stove molten iron and steel scrap weight, the various slag making materials quantity of converter steelmaking process, TSC test long-pending;
(3), converter terminal phosphorus forecast calculation system will read data composition matrix, be that Y arranges with phosphoric, remainder data composing factor matrix, solves the often corresponding parameter of the row factor;
(4), converter is when carrying out TSO test, and blowing oxygen quantity after the slag making materials kind add the hot metal composition of this stove, weight of molten iron, steel scrap kind and quantity, converter and respective amount, TSC test data, TSC test, nearest 5 stove carbon oxygen amass mean value, TSO test result is deposited into phosphorus forecast calculation system database by respective PLC;
(5), phosphorus forecast calculation system database tries to achieve parameter according to the method for step (3), and the real data of integrating step (4), carries out matrix operation, tries to achieve converter terminal phosphorus content; And forecast result data is back to sublance PLC system, after sublance exports TSO data, export forecast phosphorus content immediately.
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| CN201410079183.0A CN104894328A (en) | 2014-03-05 | 2014-03-05 | Converter endpoint phosphorus content forecasting method |
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| CN201410079183.0A CN104894328A (en) | 2014-03-05 | 2014-03-05 | Converter endpoint phosphorus content forecasting method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105331876A (en) * | 2015-11-26 | 2016-02-17 | 成都九十度工业产品设计有限公司 | Intelligent preparation method for low-tin silicon-molybdenum vermicular graphite cast iron |
| CN110322057A (en) * | 2019-06-20 | 2019-10-11 | 江阴兴澄特种钢铁有限公司 | A kind of forecasting system and prediction technique of 100t direct current electric arc furnace tapping carbon component |
| CN111518981A (en) * | 2020-04-23 | 2020-08-11 | 中冶南方工程技术有限公司 | Method and system for forecasting phosphorus content of converter endpoint |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103031398A (en) * | 2011-09-30 | 2013-04-10 | 鞍钢股份有限公司 | Converter smelting end point carbon content forecasting device and forecasting method |
| CN103103309A (en) * | 2013-01-24 | 2013-05-15 | 北京科技大学 | Method of supplementarily forecasting steelmaking finishing point of converter |
| CN103276136A (en) * | 2013-01-02 | 2013-09-04 | 邯钢集团邯宝钢铁有限公司 | Converter-steelmaking molten steel phosphorus-determination method based on sublance system |
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2014
- 2014-03-05 CN CN201410079183.0A patent/CN104894328A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031398A (en) * | 2011-09-30 | 2013-04-10 | 鞍钢股份有限公司 | Converter smelting end point carbon content forecasting device and forecasting method |
| CN103276136A (en) * | 2013-01-02 | 2013-09-04 | 邯钢集团邯宝钢铁有限公司 | Converter-steelmaking molten steel phosphorus-determination method based on sublance system |
| CN103103309A (en) * | 2013-01-24 | 2013-05-15 | 北京科技大学 | Method of supplementarily forecasting steelmaking finishing point of converter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105331876A (en) * | 2015-11-26 | 2016-02-17 | 成都九十度工业产品设计有限公司 | Intelligent preparation method for low-tin silicon-molybdenum vermicular graphite cast iron |
| CN110322057A (en) * | 2019-06-20 | 2019-10-11 | 江阴兴澄特种钢铁有限公司 | A kind of forecasting system and prediction technique of 100t direct current electric arc furnace tapping carbon component |
| CN111518981A (en) * | 2020-04-23 | 2020-08-11 | 中冶南方工程技术有限公司 | Method and system for forecasting phosphorus content of converter endpoint |
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