CN103451352A - Automatic control method for converter oxygen lance - Google Patents
Automatic control method for converter oxygen lance Download PDFInfo
- Publication number
- CN103451352A CN103451352A CN2013103864114A CN201310386411A CN103451352A CN 103451352 A CN103451352 A CN 103451352A CN 2013103864114 A CN2013103864114 A CN 2013103864114A CN 201310386411 A CN201310386411 A CN 201310386411A CN 103451352 A CN103451352 A CN 103451352A
- Authority
- CN
- China
- Prior art keywords
- silicon
- iron
- molten iron
- content
- equal
- 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
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 49
- 239000001301 oxygen Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 80
- 229910052742 iron Inorganic materials 0.000 claims abstract description 40
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 39
- 239000010703 silicon Substances 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 27
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000009628 steelmaking Methods 0.000 claims abstract description 18
- 238000003723 Smelting Methods 0.000 claims abstract description 9
- 238000001228 spectrum Methods 0.000 claims abstract description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims description 24
- 239000000203 mixture Substances 0.000 claims description 15
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 claims description 6
- SWSICXFPZSYXMZ-UHFFFAOYSA-N [Fe]=C=[Fe] Chemical compound [Fe]=C=[Fe] SWSICXFPZSYXMZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 241001417490 Sillaginidae Species 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002893 slag Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention relates to an automatic control method of a converter oxygen lance, which comprises the following steps: 1) under the automatic steelmaking condition, establishing an automatic control gun spectrum of the automatic steelmaking oxygen lance; 2) when the converter normally smelts, the automatic control scheme of the oxygen lance is formulated according to the silicon content of molten iron; 3) calculating the equivalent silicon content of the furnace; 4) calculating the comprehensive silicon content of the molten iron smelted in the furnace: comprehensive silicon content% = equivalent silicon% + actual content of molten iron silicon; 5) the automatic control scheme of the furnace oxygen lance is controlled according to the comprehensive silicon content of molten iron. Compared with the prior art, the invention has the beneficial effects that: the use amount of cold charge scrap steel is reduced by using the iron-containing material under the automatic steelmaking condition, and meanwhile, because a certain amount of FeO is contained in the iron-containing material, the slagging in the converter smelting process is very favorable, the smelting process can be stably controlled by an oxygen lance automatic control scheme which is made by combining the actual content of the iron-containing material, the equivalent silicon and the actual content of the molten iron and the silicon, and the metal yield is high.
Description
Technical field
The present invention relates to continuous casting refining treatment technical field, particularly a kind of converter oxygen gun autocontrol method.
Background technology
The automatic Steelmaking technology is widely used in converter, wherein the converter oxygen gun automatic control technology is the very important link of automatic Steelmaking, the oxygen rifle is automatically controlled the rifle position and is set rationally, can greatly reduce the large race slag of converting process and seriously return dry situation, be conducive to the raising of converter smelting recovery rate of iron, also be conducive to the raising of converter terminal composition qualification rate.Usually the oxygen rifle of automatic Steelmaking control rifle position is to formulate different oxygen rifles according to the variation of molten iron silicon content automatically to control the rifle position.But automatic Steelmaking in actual applications, due to reasons such as steelworks and iron work comprehensive utilizations of waste materials, all to add the ferrous material of some amount when converter smelting, in ferrous material, FeO content is higher, under original automatic Steelmaking condition, the oxygen rifle of setting according to molten iron silicon is controlled the rifle position automatically certain limitation, and running greatly slag slag ratio example increases greatly.
Summary of the invention
The purpose of this invention is to provide a kind of can be good at and use ferrous material in converter steelmaking process, and oxygen lance position realization control automatically, smelting process is controlled steadily, and the change slag is good, and converter terminal temperature composition is evenly qualified.
For achieving the above object, the present invention realizes by the following technical solutions:
A kind of converter oxygen gun autocontrol method comprises the following steps:
1) under the automatic Steelmaking condition, for the service condition of ferrous material, according to the composition of ferrous material and the number of usage quantity, the usage quantity of ferrous material is converted to molten iron and is equal to silicon, molten iron is equal to silicon and the combination of molten iron silicon actual content, formulates automatic Steelmaking oxygen rifle and automatically controls the rifle spectrum
When 2) converter is normally smelted, oxygen rifle automatic control scheme is formulated according to molten iron silicon content, sees the following form:
When molten iron silicon number >=0.8%, cancelling the oxygen rifle controls automatically, the employing human intervention is controlled, 1～5 difference in oxygen rifle scheme, be controlling highly with changing the different oxygen rifle of taking tap to tap time of determining according to factors such as BOF nominal capacity, oxygen rifle design variable, oxygen flows, oxygen rifle control program sees the following form:
While 3) in smelting heat, using ferrous material, the usage quantity of this heat ferrous material calculates the silicone content that is equal to of this heat according to " being equal to the silicon established standards ";
The mass percent of ferrous material kind and composition:
1) iron carbon ball composition: Te>=50% C
trip8%～13% S≤0.18% P≤0.06%
2) granulated iron composition: Te >=80% Fe2O3 >=5%
Being equal to the silicon established standards sees the following form:
| Granulated iron amount KG/ ton iron | Iron carbon ball amount KG/ ton iron | Be equal to silicon % |
| 0 | 4.1 | 0.02 |
| 0 | 8.2 | 0.03 |
| 0 | 12.2 | 0.05 |
| 0～12.2 | 0 | 0.10 |
| 12.2～24.5 | 0 | 0.16 |
| 24.5～40.8 | 0 | 0.20 |
The maximum usage quantity 40.8KG/ of granulated iron ton iron, the maximum usage quantity 12.2KG/ of iron carbon ball ton iron, maximum is equal to silicon 0.25%;
4) calculate the molten iron integrated silicon content that this heat is smelted: integrated silicon content %=is equal to silicon %+ molten iron silicon actual content %;
5) this heat oxygen rifle automatic control scheme is controlled according to molten iron integrated silicon content, and control program sees the following form:
When molten iron silicon number >=0.8%, cancel the oxygen rifle and automatically control, adopt human intervention to control.
Compared with prior art, the invention has the beneficial effects as follows:
A kind of converter oxygen gun autocontrol method, under the automatic Steelmaking condition by the use of ferrous material, reduced the usage quantity of cold burden steel scrap, control to the converter steelmaking production cost is highly beneficial, simultaneously highly beneficial for the converter steelmaking process slag owing to containing a certain amount of FeO in ferrous material, be equal to the combine oxygen rifle automatic control scheme formulated of silicon and molten iron silicon actual content by ferrous material and can accomplish that smelting process controls steadily, change slag good, the terminal temperature composition is even, and recovery rate of iron is high.
Embodiment
Below the specific embodiment of the present invention is further illustrated:
A kind of converter oxygen gun autocontrol method of the present invention comprises the following steps:
1) under the automatic Steelmaking condition, for the service condition of ferrous material, according to the composition of ferrous material and the number of usage quantity, the usage quantity of ferrous material is converted to molten iron and is equal to silicon, molten iron is equal to silicon and the combination of molten iron silicon actual content, formulates automatic Steelmaking oxygen rifle and automatically controls the rifle spectrum
When 2) converter is normally smelted, oxygen rifle automatic control scheme is formulated according to molten iron silicon content, sees the following form:
When molten iron silicon number >=0.8%, cancelling the oxygen rifle controls automatically, the employing human intervention is controlled, 1～5 difference in oxygen rifle scheme, be controlling highly with changing the different oxygen rifle of taking tap to tap time of determining according to factors such as BOF nominal capacity, oxygen rifle design variable, oxygen flows, oxygen rifle control program sees the following form:
While 3) in smelting heat, using ferrous material, the usage quantity of this heat ferrous material calculates the silicone content that is equal to of this heat according to " being equal to the silicon established standards ";
The mass percent of ferrous material kind and composition:
1) iron carbon ball composition: Te>=50% C
trip8%～13% S≤0.18% P≤0.06%
2) granulated iron composition: Te >=80% Fe2O3 >=5%
Being equal to the silicon established standards sees the following form:
| Granulated iron amount KG/ ton iron | Iron carbon ball amount KG/ ton iron | Be equal to silicon % |
| 0 | 4.1 | 0.02 |
| 0 | 8.2 | 0.03 |
| 0 | 12.2 | 0.05 |
| 0～12.2 | 0 | 0.10 |
| 12.2～24.5 | 0 | 0.16 |
| 24.5～40.8 | 0 | 0.20 |
The maximum usage quantity 40.8KG/ of granulated iron ton iron, the maximum usage quantity 12.2KG/ of iron carbon ball ton iron, maximum is equal to silicon 0.25%;
4) calculate the molten iron integrated silicon content that this heat is smelted: integrated silicon content %=is equal to silicon %+ molten iron silicon actual content %;
5) this heat oxygen rifle automatic control scheme is controlled according to molten iron integrated silicon content, and control program sees the following form:
When molten iron silicon number >=0.8%, cancel the oxygen rifle and automatically control, adopt human intervention to control.
Above described be only ultimate principle of the present invention, not the present invention is imposed any restrictions, everyly according to the present invention, it is carried out to equivalent variations and modification, all within the category of the art of this patent protection scheme.
Claims (1)
1. a converter oxygen gun autocontrol method, is characterized in that, comprises the following steps:
1) under the automatic Steelmaking condition, for the service condition of ferrous material, according to the composition of ferrous material and the number of usage quantity, the usage quantity of ferrous material is converted to molten iron and is equal to silicon, molten iron is equal to silicon and the combination of molten iron silicon actual content, formulates automatic Steelmaking oxygen rifle and automatically controls the rifle spectrum
When 2) converter is normally smelted, oxygen rifle automatic control scheme is formulated according to molten iron silicon content, sees the following form:
When molten iron silicon number >=0.8%, cancelling the oxygen rifle controls automatically, the employing human intervention is controlled, 1～5 difference in oxygen rifle scheme, be controlling highly with changing the different oxygen rifle of taking tap to tap time of determining according to factors such as BOF nominal capacity, oxygen rifle design variable, oxygen flows, oxygen rifle control program sees the following form:
While 3) in smelting heat, using ferrous material, the usage quantity of this heat ferrous material calculates the silicone content that is equal to of this heat according to " being equal to the silicon established standards ";
The mass percent of ferrous material kind and composition:
1) iron carbon ball composition: Te>=50% C
trip8%～13% S≤0.18% P≤0.06%
2) granulated iron composition: Te >=80% Fe2O3 >=5%
Being equal to the silicon established standards sees the following form:
The maximum usage quantity 40.8KG/ of granulated iron ton iron, the maximum usage quantity 12.2KG/ of iron carbon ball ton iron, maximum is equal to silicon 0.25%;
4) calculate the molten iron integrated silicon content that this heat is smelted: integrated silicon content %=is equal to silicon %+ molten iron silicon actual content %;
5) this heat oxygen rifle automatic control scheme is controlled according to molten iron integrated silicon content, and control program sees the following form:
When molten iron silicon number >=0.8%, cancel the oxygen rifle and automatically control, adopt human intervention to control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103864114A CN103451352A (en) | 2013-08-29 | 2013-08-29 | Automatic control method for converter oxygen lance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103864114A CN103451352A (en) | 2013-08-29 | 2013-08-29 | Automatic control method for converter oxygen lance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103451352A true CN103451352A (en) | 2013-12-18 |
Family
ID=49734185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103864114A Pending CN103451352A (en) | 2013-08-29 | 2013-08-29 | Automatic control method for converter oxygen lance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103451352A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105714012A (en) * | 2014-12-01 | 2016-06-29 | 鞍钢股份有限公司 | Converter less-slag smelting method for high-silicon molten iron |
| CN103710485B (en) * | 2014-01-06 | 2017-09-29 | 鞍钢股份有限公司 | Pre-desiliconization method in converter |
| CN111334637A (en) * | 2020-03-25 | 2020-06-26 | 宝钢湛江钢铁有限公司 | Self-recognition method and system for height and flow mode of converter oxygen lance |
| CN114410877A (en) * | 2021-12-30 | 2022-04-29 | 钢铁研究总院 | Automatic control method for oxygen supply process of top-blown oxygen lance in converter smelting process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575657A (en) * | 2009-06-18 | 2009-11-11 | 攀钢集团攀枝花钢铁研究院有限公司 | Oxygen top blown converter steel making method |
| CN102251069A (en) * | 2011-08-16 | 2011-11-23 | 北京首钢自动化信息技术有限公司 | Automatic control method of dephosphorization converter |
| CN102367500A (en) * | 2011-09-05 | 2012-03-07 | 北京首钢自动化信息技术有限公司 | Automatic control method of duplex process decarburization converter |
| CN102399933A (en) * | 2010-09-07 | 2012-04-04 | 鞍钢股份有限公司 | Automatic control method for converter blowing low-carbon steel oxygen lance |
| CN102952915A (en) * | 2011-08-20 | 2013-03-06 | 鞍钢股份有限公司 | Converter smelting method of phosphorus-containing steel |
-
2013
- 2013-08-29 CN CN2013103864114A patent/CN103451352A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101575657A (en) * | 2009-06-18 | 2009-11-11 | 攀钢集团攀枝花钢铁研究院有限公司 | Oxygen top blown converter steel making method |
| CN102399933A (en) * | 2010-09-07 | 2012-04-04 | 鞍钢股份有限公司 | Automatic control method for converter blowing low-carbon steel oxygen lance |
| CN102251069A (en) * | 2011-08-16 | 2011-11-23 | 北京首钢自动化信息技术有限公司 | Automatic control method of dephosphorization converter |
| CN102952915A (en) * | 2011-08-20 | 2013-03-06 | 鞍钢股份有限公司 | Converter smelting method of phosphorus-containing steel |
| CN102367500A (en) * | 2011-09-05 | 2012-03-07 | 北京首钢自动化信息技术有限公司 | Automatic control method of duplex process decarburization converter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103710485B (en) * | 2014-01-06 | 2017-09-29 | 鞍钢股份有限公司 | Pre-desiliconization method in converter |
| CN105714012A (en) * | 2014-12-01 | 2016-06-29 | 鞍钢股份有限公司 | Converter less-slag smelting method for high-silicon molten iron |
| CN111334637A (en) * | 2020-03-25 | 2020-06-26 | 宝钢湛江钢铁有限公司 | Self-recognition method and system for height and flow mode of converter oxygen lance |
| 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 |
| CN114410877A (en) * | 2021-12-30 | 2022-04-29 | 钢铁研究总院 | Automatic control method for oxygen supply process of top-blown oxygen lance in converter smelting process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102776313B (en) | Method for smelting high-phosphorus steel by low-temperature low-silicon molten iron in converter | |
| CN105132612B (en) | Converter less slag smelting early stage deslagging control method | |
| CN102787196B (en) | Method for smelting stainless steel by direct reduced iron | |
| CN108998614B (en) | Smelting method of ultra-low manganese steel | |
| CN103866088A (en) | Method for determining amount of slagging material and deoxidized alloy added into LF (Low-Frequency) refining furnace by use of reference heat method | |
| CN104928431A (en) | Method for single slag smelting low-carbon high-phosphorus and high-weathering steel by adopting combined blown converter | |
| CN103451352A (en) | Automatic control method for converter oxygen lance | |
| CN104195290A (en) | Molten steel dephosphorization agent and molten steel dephosphorization refining method | |
| CN105132621B (en) | Smelting process for steel for low-silicon aluminum steel-free welding wire | |
| CN105132611B (en) | Method for producing ultra-low phosphorous steel through single slag of converter | |
| CN103215408B (en) | A kind ofly add the method that slag block carries out converter steelmaking | |
| CN103571999A (en) | Method for smelting nitrogen-controlling martensite stainless steel through total molten iron | |
| CN107058679B (en) | A method of stablizing half steel quality | |
| CN106148629B (en) | Method for controlling manganese content of high-manganese molten iron end point | |
| CN109097522A (en) | A kind of middle high manganese high phosphorus hot metal containing low silicon improves the converter smelting method of the residual manganese of endpoint molten steel | |
| CN102876830B (en) | Converter smelting method for high-phosphorus steel for containers | |
| CN104531940A (en) | Converter final slag thickening method | |
| CN103255264A (en) | Method for dephosphorizing by using LF refining furnace | |
| CN111440916B (en) | Method for producing ultra-low manganese steel by using high-manganese molten iron converter | |
| CN101020943A (en) | Phosphorus reducing method for process of smelting Ni-Cr pig iron with nickel oxide ore | |
| CN108570528B (en) | Control method for improving steelmaking converter blowing end point temperature | |
| CN104328240A (en) | Method for smelting high-carbon and low-phosphorus steel by adopting converter | |
| CN108384916B (en) | Method for improving control capability of steelmaking converter blowing end point carbon | |
| CN101864508B (en) | Steel making method of convertor with small slag quantity | |
| CN103667591B (en) | A kind of high ferro is than Electric furnace steel making end point carbon control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131218 |
|
| WD01 | Invention patent application deemed withdrawn after publication |