CN102367500B - Automatic control method of duplex process decarburization converter - Google Patents
Automatic control method of duplex process decarburization converter Download PDFInfo
- Publication number
- CN102367500B CN102367500B CN 201110260346 CN201110260346A CN102367500B CN 102367500 B CN102367500 B CN 102367500B CN 201110260346 CN201110260346 CN 201110260346 CN 201110260346 A CN201110260346 A CN 201110260346A CN 102367500 B CN102367500 B CN 102367500B
- Authority
- CN
- China
- Prior art keywords
- weight
- oxygen
- half steel
- pattern
- time
- 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.)
- Expired - Fee Related
Links
- 238000005261 decarburization Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 34
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 186
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 186
- 239000001301 oxygen Substances 0.000 claims abstract description 186
- 238000007664 blowing Methods 0.000 claims abstract description 32
- 239000002893 slag Substances 0.000 claims abstract description 11
- 238000009628 steelmaking Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 83
- 239000010959 steel Substances 0.000 claims description 83
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 13
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 13
- 239000004571 lime Substances 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 11
- 238000003723 Smelting Methods 0.000 claims description 10
- 230000036284 oxygen consumption Effects 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 230000004907 flux Effects 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 4
- 238000004540 process dynamic Methods 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 claims description 3
- 241001062472 Stokellia anisodon Species 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000004886 process control Methods 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 18
- 229910052742 iron Inorganic materials 0.000 abstract description 9
- 238000010079 rubber tapping Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 4
- 239000003507 refrigerant Substances 0.000 description 4
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 3
- 239000010436 fluorite Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 1
Images
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
An automatic control method of a duplex process decarburization converter belongs to the technical field of automatic control of converter steelmaking. On the basis of the existing related secondary system, a dynamic event triggering mode is designed, and comprises an oxygen content absolute value event, a relative main blowing end oxygen content event, a relative blowing end event, a relative slag tapping completion event and a percentage event, so that the original fixed mode only relative to the oxygen content percentage is replaced; meanwhile, an oxygen lance and a feeding mode are designed to perform automatic mode matching according to the Si content of the charged molten iron, the Mn content of the molten iron and the temperature of the molten iron, and a secondary system automatically selects corresponding mode data according to the actual condition of the semisteel and sends the corresponding control data to a primary PLC system to complete the automatic control of the whole converting process. The method has the advantages of improving the automatic control level of the decarburization converter in the duplex process and simultaneously improving the double hit rate of the blowing end point of the converter.
Description
Technical field
The invention belongs to converter steelmaking automatic control technology field, particularly relate to the autocontrol method of decarburization converter in a kind of duplex technology mode.
Background technology
Duplex process for steel making is that a block converter carries out the dephosphorization of molten iron operation, and the half steel that another block converter receives from the dephosphorization stove carries out Decarburization Operation, and dephosphorization of molten iron and decarburization are separately finished by two block converters.
Adopt dephosphorization, decarburization duplex technique that following principal feature is arranged: the one, be conducive to dephosphorization, decarburization.Top and bottom combined blown converter carries out dephosphorization of molten iron to be processed, and makes melting bath stirring good, can accelerate flowing and increase slag and molten iron contact area of slag, promotes the lime fusing, improves slagging course, is conducive to dephosphorization.The 2nd, can reduce the quantity of slag.Owing to carry out dephosphorization and decarburization two converters respectively, so only have dephosphorization converter to need suitable slag to be used for dephosphorization, decarbonizing furnace can be without slag or less-slag melting.The 3rd, smelting cycle shortens.Because being the steelmaking process with dephosphorization of molten iron and decarburization, this technique in two block converters, carries out respectively, so the function Focus of converter is shortened every stove oxygen blow duration greatly.
The decarburization converter is take the dephosphorization half steel as iron material under the duplex technique, about 3.5 % by weight of half Carbon Content Of Steel, and about 1350 ℃ of temperature has larger difference with general converter steelmaking process, for the automated control technology of this smelting process, does not see relevant report.
Summary of the invention
The object of the invention is to provide the autocontrol method of decarburization converter in a kind of duplex technique, on existing level two and sublance Equipment Foundations, smelting control process dynamic event triggering mode, oxygen rifle pattern Dynamic Matching mode, feed pattern Dynamic Matching mode have been increased; Realize the automatic control of decarburization smelting process oxygen rifle, reinforced process.
The present invention is directed to the decarburization converter steelmaking process, require decarburization material condition C content 3.2-3.6 % by weight, temperature 1300-1450 ℃, Si content≤0.2 % by weight, Mn content≤0.2 % by weight.
Described smelting control process dynamic event triggering mode refers to except the mode with respect to oxygen amount per-cent that generally has, and also comprises oxygen amount absolute value event, relatively main blowing bundle oxygen amount event, and the finishing blowing event is finished event with respect to slagging tap relatively;
Described oxygen rifle pattern Auto-matching mode, feed pattern Auto-matching mode are that Mn content, P content and temperature are carried out the automatic mode matching way according to the decarbonizing furnace half steel Si content of packing into.Level two is selected corresponding mode data automatically according to the half steel practical situation, and with the oxygen-consumption that secondary calculates, flux amount and ore amount carry out Auto-matching, is handed down to primary PLC system control data, finishes the automatic control of whole converting process.
Described level two is can be according to decarburization slag making requirement, calculate decarburization smelting process flux demand, according to the decarburization target temperature require, the aim carbon requirement, possess the program control system that thermal equilibrium, material balance are calculated cooling ore amount and oxygen consumption function.
Described oxygen rifle master mode refers to that the decarbonizing furnace blowing begins to the oxygen lance position between the finishing blowing (with respect to bath surface) the control parameter of oxygen flow.
Oxygen rifle pattern 1 is as follows:
Open oxygen lance position 200cm when blowing, oxygen flow 460m
3/ second.
The oxygen amount arrives 800m
3The time, oxygen lance position 280cm, oxygen flow 900m
3/ min.
The oxygen amount arrives 4000m
3The time, oxygen lance position 270cm, oxygen flow 900m
3/ min.
The oxygen amount arrives 5000m
3The time, oxygen lance position 260cm, oxygen flow 900m
3/ min.
The oxygen amount arrives 7000m
3The time, oxygen lance position 240cm, oxygen flow 900m
3/ min.
The oxygen amount arrives 8000m
3The time, oxygen lance position 200cm, oxygen flow 900m
3/ min.
When sublance is measured, oxygen lance position 180cm, oxygen flow 550m
3/ min.
Measure and finish to finishing blowing oxygen lance position 180cm, oxygen flow 1033m
3/ min.
Oxygen rifle pattern 2 is as follows:
Open oxygen lance position 200cm when blowing, oxygen flow 460m
3/ second.
The oxygen amount arrives 800m
3The time, oxygen lance position 280cm, oxygen flow 900m
3/ min.
The oxygen amount arrives 3500m
3The time, oxygen lance position 280cm, oxygen flow 900m
3/ min.
The oxygen amount arrives 4000m
3The time, oxygen lance position 260cm, oxygen flow 900m
3/ min.
The oxygen amount arrives 5500m
3The time, oxygen lance position 240cm, oxygen flow 900m
3/ min.
The oxygen amount arrives 7500m
3The time, oxygen lance position 220cm, oxygen flow 900m
3/ min.
The oxygen amount arrives 8000m
3The time, oxygen lance position 200cm, oxygen flow 900m
3/ min.
When sublance is measured, oxygen lance position 180cm, oxygen flow 550m
3/ min.
Measure and finish to finishing blowing oxygen lance position 180cm, oxygen flow 1033m
3/ min.
Oxygen rifle pattern matching mode of the present invention is according to half steel Si, Mn content, and temperature condition carries out Definition of Division, the scope of application: 1300 ℃≤temperature of half steel≤1450 ℃, and Si content≤0.2 % by weight, Mn content≤0.2 % by weight, specific as follows:
＜1〉half steel Si % by weight≤0.07 % by weight, Mn % by weight≤0.04 % by weight during half steel temperature≤1320 ℃, adopts a kind of oxygen rifle pattern 1.
＜2〉half steel Si % by weight≤0.07 % by weight, 0.04 % by weight＜Mn % by weight≤0.2 % by weight during half steel temperature≤1320 ℃, adopts a kind of oxygen rifle pattern 1.
＜3〉half steel 0.07 % by weight＜Si % by weight≤0.15 % by weight, Mn % by weight≤0.04 % by weight during half steel temperature≤1320 ℃, adopts a kind of oxygen rifle pattern 1.
＜4〉half steel 0.07 % by weight＜Si % by weight≤0.15 % by weight, 0.04 % by weight＜Mn % by weight≤0.2 % by weight during half steel temperature≤1320 ℃, adopts a kind of oxygen rifle pattern 1.
＜5〉half steel 0.15 % by weight＜Si % by weight≤0.2 % by weight, Mn % by weight≤0.2 % by weight during half steel temperature≤1320 ℃, adopts a kind of oxygen rifle pattern 1.
＜6〉half steel 0.07 % by weight＜Si % by weight≤0.15 % by weight when Mn % by weight≤0.04 % by weight, 1320 ℃＜half steel temperature≤1450 ℃, adopts a kind of oxygen rifle pattern 2.
＜7〉half steel 0.07 % by weight＜Si % by weight≤0.15 % by weight when 0.04 % by weight＜Mn % by weight≤0.2 % by weight, 1320 ℃＜half steel temperature≤1450 ℃, adopts a kind of oxygen rifle pattern 2.
＜8〉half steel Si % by weight≤0.07 % by weight when Mn % by weight≤0.04 % by weight, 1320 ℃＜half steel temperature≤1450 ℃, adopts a kind of oxygen rifle pattern 2.
＜9〉half steel Si % by weight≤0.07 % by weight when 0.04 % by weight＜Mn % by weight≤0.2 % by weight, 1320 ℃＜half steel temperature≤1450 ℃, adopts a kind of oxygen rifle pattern 2.
＜10〉half steel 0.15 % by weight＜Si % by weight≤0.2 % by weight when Mn % by weight≤0.2 % by weight, 1320 ℃＜half steel temperature≤1450 ℃, adopts a kind of oxygen rifle pattern 2.
Described feed pattern Auto-matching is divided and is defined according to half steel Si, P content, and the reinforced system of main standard converting process adopts the percentage of reinforced total amount or material total amount recently to carry out, and is as follows:
Feed pattern 1
Condition: half steel Si % by weight≤0.15 % by weight, during half steel P＞0.025 % by weight.
The oxygen amount arrives 800m
3The time, the fixing reinforced 4000Kg of lime, light-burned (gross weight) 100 % by weight, ore (gross weight) 70 % by weight,
The oxygen amount arrives 2000m
3The time, ore (gross weight) 30 % by weight.
After sublance is measured, if secondary calculates ore gross weight＞0, ore (dynamic calculation value) 100 % by weight.
Feed pattern 2
Condition: half steel Si % by weight≤0.15 % by weight, during half steel P≤0.025 % by weight.
The oxygen amount arrives 800m
3The time, the fixing reinforced 3500Kg of lime, light-burned (gross weight) 100 % by weight, ore (gross weight) 70 % by weight,
The oxygen amount arrives 2000m
3The time, ore (gross weight) 30 % by weight.
After sublance is measured, if secondary calculates ore gross weight＞0, ore (dynamic calculation value) 100 % by weight.
Feed pattern 3
Condition: half steel Si % by weight＞0.15 % by weight, do not consider half steel P.
The oxygen amount arrives 800m
3The time, lime (gross weight) 100 % by weight, light-burned (gross weight) 100 % by weight, ore (gross weight) 70 % by weight,
The oxygen amount arrives 2000m
3The time, ore (gross weight) 30 % by weight.
After sublance is measured, if secondary calculates ore gross weight＞0, ore (dynamic calculation value) 100 % by weight.
The automatic control of described decarburization converter refers to:
Step 1: blowing pattern and the matching way data that will make are input to level two, and feed pattern is input to level two.
Step 2: level two receives the half steel data message.
Step 3: before beginning blowing, level two is calculated the data such as lime, ore, oxygen consumption according to dephosphorization slag making requirement and thermal equilibrium, material balance principle.
Step 4: level two will be according to half composition of steel temperature information, automatically selects corresponding blowing mode number, feed pattern number, forms blowing mode data, feed pattern data, and send to the one-level basic automation systems.
Step 5: after operator triggered one-level blowing commencing signal, the one-level program sent parameter according to secondary and carries out control of lance position, oxygen blast flow control, charging control.
Step 6: smelt later stage liquid steel temperature, carbon content detection by sublance, finish Terminal Process Control by secondary software.
Description of drawings
Fig. 1 is decarburization converter autocontrol method implementing procedure figure of the present invention.
Embodiment:
Example 1:
Heat is smelted in decarburization: 11103296
Half steel is packed 307 tons into, half composition of steel that duplex dephosphorized converter comes, 1350 ℃ of C 3.3 % by weight Si 0.03 % by weight Mn0.01 % by weight P 0.031 % by weight, half steel temperature.
Carry out according to following correlation step:
Step 1: level two, according to the half steel situation of packing into, and steel grade target temperature 1690, aim carbon 0.05 % by weight, target basicity 3.2.It is as follows to calculate this stove flux, refrigerant, oxygen amount total amount:
Lime: 4000kg; Fluorite 600kg; Light-burned 2000kg, ore 2000kg; Oxygen-consumption 10900m
3
Step 2: secondary is selected corresponding oxygen rifle pattern 2 automatically according to half steel temperature, composition, and the reinforced pattern 1 of automatically selecting correspondence is mated in conjunction with flux, refrigerant, oxygen amount that secondary calculates, and matching result is sent to the primary PLC system.
Step 3: the primary PLC system, issue the control data according to secondary, independently carry out respectively oxygen amount, reinforced fully automatically controlling.
The actual automatically control situation of oxygen rifle: open wind drift amount 520m
3/ second, rifle position 202cm, oxygen amount 830m
3The time, rifle position 279cm, oxygen flow 920m
3/ min, oxygen amount 4100m
3The time, rifle position 266cm, oxygen amount 5600m
3The time, rifle position 241cm, oxygen amount 7580m
3The time, rifle position 225cm, oxygen amount 8200m
3The time, rifle position 213cm, during sublance is measured, rifle position 184cm, oxygen flow 560m
3/ min measures and finishes to finishing blowing, rifle position 184cm, oxygen flow 1020m
3/ min.
Reinforced actual automatically control situation: during oxygen amount 830m3, lime adds 4200kg, light-burned 2065kg, and ore 1240kg, fluorite 630kg, during oxygen amount 8780, ore adds 1100kg.
The actual oxygen consumption 11542m of heat
3
Step 4: tapping finishes the thermometric sampling, principal element percentage composition: C 0.0526 % by weight Si 0.001 % by weight Mn 0.021 % by weight P 0.018 % by weight, S 0.009 % by weight, measures 1693 ℃ of temperature.
Example 2:
Heat is smelted in decarburization: 11203402
Half steel is packed 310 tons into, half composition of steel that duplex dephosphorized converter comes, 1345 ℃ of C 3.25 % by weight Si 0.02 % by weight Mn0.015 % by weight P 0.024 % by weight, half steel temperature.
Carry out according to following correlation step:
Step 1: level two, according to the half steel situation of packing into, and steel grade target temperature 1685, aim carbon 0.055 % by weight, target basicity 3.2.It is as follows to calculate this stove flux, refrigerant, oxygen amount total amount:
Lime: 3500kg; Fluorite 500kg; Light-burned 2000kg, ore 1200kg; Oxygen-consumption 11573m
3
Step 2: secondary is selected corresponding oxygen rifle pattern 2 automatically according to half steel temperature, composition, and the reinforced pattern 2 of automatically selecting correspondence is mated in conjunction with flux, refrigerant, oxygen amount that secondary calculates, and matching result is sent to the primary PLC system.
Step 3: the primary PLC system, issue the control data according to secondary, independently carry out respectively oxygen amount, reinforced fully automatically controlling.
The actual automatically control situation of oxygen rifle: open wind drift amount 522m
3/ second, rifle position 205cm, oxygen amount 820m
3The time, rifle position 285cm, oxygen flow 925m
3/ min, oxygen amount 4170m
3The time, rifle position 262cm, oxygen amount 5690m
3The time, rifle position 244cm, oxygen amount 7610m
3The time, rifle position 229cm, oxygen amount 8250m
3The time, rifle position 215cm, during sublance is measured, rifle position 183cm, oxygen flow 580m
3/ min measures and finishes to finishing blowing, rifle position 183cm, oxygen flow 1030m
3/ min.
Reinforced actual automatically control situation: during oxygen amount 876m3, lime adds 3900kg, light-burned 2300kg, and ore 940kg, during oxygen amount 9100, ore adds 510kg.
The actual oxygen consumption 11198m of heat
3
Step 4: tapping finishes the thermometric sampling, principal element percentage composition: C 0.051 % by weight Si 0.002 % by weight Mn 0.018 % by weight P 0.007 % by weight, S 0.010 % by weight, measures 1677 ℃ of temperature.
Claims (4)
1. the autocontrol method of a duplex technique decarburization converter for the decarburization converter steelmaking process, requires decarburization material condition C content 3.2-3.6 % by weight, and temperature 1300-1360 ℃, Si content＜0.2 % by weight, Mn content＜0.2 % by weight; It is characterized in that, on existing level two and sublance Equipment Foundations, increased smelting control process dynamic event triggering mode, oxygen rifle pattern Dynamic Matching mode, feed pattern Dynamic Matching mode; Realize the automatic control of decarburization smelting process oxygen rifle, reinforced process;
Described smelting control process dynamic event triggering mode, refer to according to decarburization Converter Oxigen Blowing per-cent, decarburization Converter Oxigen Blowing actual value, decarburization converter master blowing bundle, decarburization bessemerize end, the decarburization converter is slagged tap and is finished, a kind of Event triggered of carrying out in these five kinds of events;
Described oxygen rifle pattern Dynamic Matching mode, feed pattern Dynamic Matching mode are that Mn content, P content and temperature are carried out oxygen rifle pattern, feed pattern Dynamic Matching according to the decarbonizing furnace half steel Si content of packing into; Level two is selected corresponding mode data automatically according to the half steel practical situation, and with the oxygen-consumption that secondary calculates, flux amount and ore amount carry out Dynamic Matching, is handed down to primary PLC system control data, finishes the automatic control of whole converting process;
Described level two, can be according to decarburization slag making requirement, calculate decarburization smelting process flux demand, according to the decarburization target temperature require, the aim carbon requirement, possess the program control system that thermal equilibrium, material balance are calculated cooling ore amount and oxygen consumption function;
Described oxygen rifle pattern refers to that the decarbonizing furnace blowing begins to the rifle position of the oxygen rifle between the finishing blowing with respect to bath surface, the control parameter of oxygen flow, and oxygen rifle pattern is divided into two kinds, is respectively oxygen rifle pattern 1 and oxygen rifle pattern 2;
The control parameter of the oxygen flow of oxygen rifle pattern 1 is:
Open oxygen lance position 200cm when blowing, oxygen flow 460m
3/ second;
The oxygen amount arrives 800m
3The time, oxygen lance position 280 cm, oxygen flow 900m
3/ min;
The oxygen amount arrives 4000m
3The time, oxygen lance position 270 cm, oxygen flow 900m
3/ min;
The oxygen amount arrives 5000m
3The time, oxygen lance position 260 cm, oxygen flow 900m
3/ min;
The oxygen amount arrives 7000m
3The time, oxygen lance position 240 cm, oxygen flow 900m
3/ min;
The oxygen amount arrives 8000m
3The time, oxygen lance position 200 cm, oxygen flow 900m
3/ min;
When sublance is measured, oxygen lance position 180 cm, oxygen flow 550m
3/ min;
Measure and finish to finishing blowing oxygen lance position 180 cm, oxygen flow 1033m
3/ min;
The control parameter of the oxygen flow of oxygen rifle pattern 2 is:
Open oxygen lance position 200cm when blowing, oxygen flow 460m
3/ second;
The oxygen amount arrives 800m
3The time, oxygen lance position 280 cm, oxygen flow 900m
3/ min;
The oxygen amount arrives 3500m
3The time, oxygen lance position 280 cm, oxygen flow 900m
3/ min;
The oxygen amount arrives 4000m
3The time, oxygen lance position 260 cm, oxygen flow 900m
3/ min;
The oxygen amount arrives 5500m
3The time, oxygen lance position 240 cm, oxygen flow 900m
3/ min;
The oxygen amount arrives 7500m
3The time, oxygen lance position 220 cm, oxygen flow 900m
3/ min;
The oxygen amount arrives 8000m
3The time, oxygen lance position 200 cm, oxygen flow 900m
3/ min;
When sublance is measured, oxygen lance position 180 cm, oxygen flow 550m
3/ min;
Measure and finish to finishing blowing oxygen lance position 180 cm, oxygen flow 1033m
3/ min.
2. method according to claim 1, it is characterized in that, described oxygen rifle pattern Dynamic Matching mode is according to half steel Si, Mn content, and temperature condition carries out Definition of Division, the scope of application: 1300 ℃≤temperature of half steel≤1450 ℃, Si content≤0.2 % by weight, Mn content≤0.2 % by weight, specific as follows:
Half steel Si % by weight≤0.07 % by weight, Mn % by weight≤0.04 % by weight during half steel temperature≤1320 ℃, adopts a kind of oxygen rifle pattern 1;
Half steel Si % by weight≤0.07 % by weight, 0.04 % by weight＜Mn % by weight≤0.2 % by weight during half steel temperature≤1320 ℃, adopts a kind of oxygen rifle pattern 1;
Half steel 0.07 % by weight＜Si % by weight≤0.15 % by weight, Mn % by weight≤0.04 % by weight during half steel temperature≤1320 ℃, adopts a kind of oxygen rifle pattern 1;
Half steel 0.07 % by weight＜Si % by weight≤0.15 % by weight, 0.04 % by weight＜Mn % by weight≤0.2 % by weight during half steel temperature≤1320 ℃, adopts a kind of oxygen rifle pattern 1;
Half steel 0.15 % by weight＜Si % by weight≤0.2 % by weight, Mn % by weight≤0.2 % by weight during half steel temperature≤1320 ℃, adopts a kind of oxygen rifle pattern 1;
Half steel 0.07 % by weight＜Si % by weight≤0.15 % by weight when Mn % by weight≤0.04 % by weight, 1320 ℃＜half steel temperature≤1450 ℃, adopts a kind of oxygen rifle pattern 2;
Half steel 0.07 % by weight＜Si % by weight≤0.15 % by weight, 0.04 % by weight＜Mn % by weight≤0.2 % by weight, 1320 ℃＜during half steel temperature≤1450 ℃, are adopted a kind of oxygen rifle pattern 2;
Half steel Si % by weight≤0.07 % by weight when Mn % by weight≤0.04 % by weight, 1320 ℃＜half steel temperature≤1450 ℃, adopts a kind of oxygen rifle pattern 2;
Half steel Si % by weight≤0.07 % by weight when 0.04 % by weight＜Mn % by weight≤0.2 % by weight, 1320 ℃＜half steel temperature≤1450 ℃, adopts a kind of oxygen rifle pattern 2;
Half steel 0.15 % by weight＜Si % by weight≤0.2 % by weight when Mn % by weight≤0.2 % by weight, 1320 ℃＜half steel temperature≤1450 ℃, adopts a kind of oxygen rifle pattern 2.
3. method according to claim 1 is characterized in that, described feed pattern Dynamic Matching mode is divided and defined according to half steel Si, P content, and the reinforced system of standard converting process adopts the percentage of reinforced total amount or material total amount recently to carry out as follows:
Feed pattern 1
Condition: half steel Si % by weight≤0.15 % by weight, half steel P〉during 0.025 % by weight;
The oxygen amount arrives 800 m
3The time, the fixing reinforced 4000Kg of lime, light-burned gross weight 100 % by weight, ore gross weight 70 % by weight,
The oxygen amount arrives 2000 m
3The time, ore gross weight 30 % by weight;
After sublance is measured, if secondary calculates the ore gross weight〉0, the ore dynamic calculation is worth 100 % by weight;
Feed pattern 2
Condition: half steel Si % by weight≤0.15 % by weight, during half steel P≤0.025 % by weight;
The oxygen amount arrives 800 m
3The time, the fixing reinforced 3500Kg of lime, light-burned gross weight 100 % by weight, ore gross weight 70 % by weight,
The oxygen amount arrives 2000 m
3The time, ore gross weight 30 % by weight;
After sublance is measured, if secondary calculates the ore gross weight〉0, the ore dynamic calculation is worth 100 % by weight;
Feed pattern 3
Condition: half steel Si % by weight〉0.15 % by weight, do not consider half steel P;
The oxygen amount arrives 800 m
3The time, lime gross weight 100 % by weight, light-burned gross weight 100 % by weight, ore gross weight 70 % by weight;
The oxygen amount arrives 2000 m
3The time, ore gross weight 30 % by weight;
After sublance is measured, when secondary calculates the ore gross weight〉0, the ore dynamic calculation is worth 100 % by weight.
4. method according to claim 1 is characterized in that, the automatic control of described decarburization converter refers to:
Step 1: blowing pattern and the matching way data that will make are input to level two, and feed pattern is input to level two;
Step 2: level two receives the half steel data message;
Step 3: before beginning blowing, level two is calculated lime, ore, oxygen consumption data according to dephosphorization slag making requirement and thermal equilibrium, material balance principle;
Step 4: level two will be according to half composition of steel temperature information, automatically selects corresponding blowing mode number, feed pattern number, forms blowing mode data, feed pattern data, and send to the one-level basic automation systems;
Step 5: after operator triggered one-level blowing commencing signal, the one-level program sent parameter according to secondary and carries out control of lance position, oxygen blast flow control, charging control;
Step 6: smelt later stage liquid steel temperature, carbon content detection by sublance, finish Terminal Process Control by secondary software.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110260346 CN102367500B (en) | 2011-09-05 | 2011-09-05 | Automatic control method of duplex process decarburization converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110260346 CN102367500B (en) | 2011-09-05 | 2011-09-05 | Automatic control method of duplex process decarburization converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102367500A CN102367500A (en) | 2012-03-07 |
| CN102367500B true CN102367500B (en) | 2013-04-24 |
Family
ID=45760090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110260346 Expired - Fee Related CN102367500B (en) | 2011-09-05 | 2011-09-05 | Automatic control method of duplex process decarburization converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102367500B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102586535B (en) * | 2012-03-20 | 2013-04-24 | 北京首钢自动化信息技术有限公司 | Static-dynamic automatic feeding method in converter smelting process |
| CN102943144B (en) * | 2012-11-02 | 2014-03-12 | 中冶京诚工程技术有限公司 | Automatic control method of carbon steel converter capable of adapting to blowing-out and converter-reversing operation |
| CN103451352A (en) * | 2013-08-29 | 2013-12-18 | 鞍钢股份有限公司 | Automatic control method for converter oxygen lance |
| CN104846150B (en) * | 2014-02-19 | 2017-03-29 | 宝山钢铁股份有限公司 | Low aluminum dipping form cast steels melting method |
| CN104212933B (en) * | 2014-08-19 | 2016-06-29 | 北京首钢自动化信息技术有限公司 | A kind of autocontrol method of converter less-slag melting |
| 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 |
| CN108018393A (en) * | 2016-11-01 | 2018-05-11 | 北京明诚技术开发有限公司 | Intelligent automatic steelmaking system and method |
| CN107164597A (en) * | 2017-04-12 | 2017-09-15 | 宣化钢铁集团有限责任公司 | It is a kind of to detect the one-touch automatic method for making steel of converter without furnace gas without sublance |
| CN108265156A (en) * | 2018-04-18 | 2018-07-10 | 辽宁鸿盛冶金科技有限公司 | Converter anthropomorphic arm charging system |
| CN111334637B (en) * | 2020-03-25 | 2021-07-13 | 宝钢湛江钢铁有限公司 | Self-recognition method and system for height and flow mode of converter oxygen lance |
| CN115341069B (en) * | 2021-05-14 | 2024-09-10 | 宝山钢铁股份有限公司 | Molten steel carbon content predictive control method for converter converting end point based on online dynamic detection model |
| CN114637267B (en) * | 2022-03-16 | 2024-01-30 | 包头钢铁（集团）有限责任公司 | Method for constructing object heat balance model for production control and production control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1687953A (en) * | 2005-05-20 | 2005-10-26 | 冶金自动化研究设计院 | Converter imitating system based on computer |
| CN101760578A (en) * | 2009-12-11 | 2010-06-30 | 河北天俱时工程技术开发有限公司 | Converter smelting operation decision supporting system |
| CN101845531A (en) * | 2010-05-07 | 2010-09-29 | 北京首钢自动化信息技术有限公司 | Converter smelting endpoint molten steel carbon and temperature control system and method thereof |
-
2011
- 2011-09-05 CN CN 201110260346 patent/CN102367500B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1687953A (en) * | 2005-05-20 | 2005-10-26 | 冶金自动化研究设计院 | Converter imitating system based on computer |
| CN101760578A (en) * | 2009-12-11 | 2010-06-30 | 河北天俱时工程技术开发有限公司 | Converter smelting operation decision supporting system |
| CN101845531A (en) * | 2010-05-07 | 2010-09-29 | 北京首钢自动化信息技术有限公司 | Converter smelting endpoint molten steel carbon and temperature control system and method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102367500A (en) | 2012-03-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102367500B (en) | Automatic control method of duplex process decarburization converter | |
| CN102212643B (en) | Converter less-slag smelting process | |
| CN108251592B (en) | A kind of converter smelting method of extremely low phosphoretic steel | |
| CN109280731A (en) | The method of the high phosphorus hot metal production steel of converter terminal P≤0.01% is smelted using few slag charge | |
| CN105112599B (en) | A kind of ultra-low phosphoretic steel smelting process | |
| CN109321704B (en) | Smelting method for reducing phosphorus content of smelting final slag by slag splashing furnace protection | |
| CN105671248B (en) | A kind of smelting process of converter high efficiency dephosphorating | |
| CN108359766B (en) | A kind of oxygen bottom blowing converter smelting process control method based on continuous measurement of molten steel temperature | |
| CN101993980A (en) | Method for smelting ultralow-phosphorous steel | |
| CN102251069B (en) | Automatic control method of dephosphorization converter | |
| Urban et al. | De-Phosphorization Strategies and Modelling in Oxygen Steelmaking | |
| CN103320566B (en) | Double slag process smelts the method for half steel | |
| CN103695593B (en) | Automatic steelmaking and slag-leaving operation method for converter | |
| CN109797265A (en) | A kind of converter is precisely controlled the method for staying the quantity of slag | |
| CN106282477B (en) | A kind of smelting process of ultra-low phosphoretic steel | |
| CN105132611B (en) | Method for producing ultra-low phosphorous steel through single slag of converter | |
| CN107893188A (en) | A kind of smelting process of high intensity manganese-boron steel | |
| CN104212933B (en) | A kind of autocontrol method of converter less-slag melting | |
| CN105039634B (en) | A kind of dephosphorization method of convertor steelmaking process | |
| CN101864508B (en) | Steel making method of convertor with small slag quantity | |
| CN103757173B (en) | The converter steel making method of low lime consumption | |
| CN103409595A (en) | Dephosphorization and steel-making method of vanadium-containing molten iron | |
| CN104726645A (en) | Dephosphorization method of mid-high phosphorus semisteel | |
| CN107034334A (en) | The double slag melting methods of half steel of the quick slagging of falling stove | |
| CN103993119B (en) | A kind of method of half steel slag making |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20190905 |