CN115369209A - Operation method for accurately controlling lance position in converter smelting process - Google Patents
Operation method for accurately controlling lance position in converter smelting process Download PDFInfo
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- CN115369209A CN115369209A CN202210853250.4A CN202210853250A CN115369209A CN 115369209 A CN115369209 A CN 115369209A CN 202210853250 A CN202210853250 A CN 202210853250A CN 115369209 A CN115369209 A CN 115369209A
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- 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
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4606—Lances or injectors
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- 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
- C21C2300/00—Process aspects
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Abstract
The invention provides an operation method for accurately controlling a lance position in a converter smelting process, which relates to the technical field of ferrous metallurgy and comprises the following steps: s1: adding data of the loading amount of each furnace on a converter main control operation interface; s2: adding furnace bottom height information on a converter master control operation interface; s3: calculating the lance position in the converter smelting process by utilizing the loading amount, the height of the furnace bottom and the height of an oxygen lance encoder on a master control operation computer; according to the invention, the furnace bottom height, the loading amount and the data information of the gun position in the converter smelting process are added on the main control computer interface of the converter, and the gun position data in the converter smelting process is calculated by utilizing a computer program, so that the accurate information of the gun position in the converter smelting process can be accurately reflected at any time, the gun position control operation in the converter smelting process of a converter steelmaking worker is effectively guided, the gun position parameters in the converter smelting process can be conveniently known in real time, the gun position in the converter smelting process can be timely and accurately adjusted, and the stability of the converter production process and the continuous optimization of various economic and technical indexes in production are ensured.
Description
Technical Field
The invention relates to the technical field of ferrous metallurgy, in particular to an operation method for accurately controlling a gun position in a converter smelting process.
Background
At present, the lance position in the converter smelting process is mainly determined according to two factors, one factor is the measured height of the furnace bottom, the other factor is the height of an oxygen lance encoder, and in the operation process, the actual smelting process lance position (the distance between an oxygen lance nozzle and the liquid level of molten steel) of the converter oxygen lance is the height of the oxygen lance encoder minus the height of the furnace bottom, for example: the calculation method not only considers the bottom height deviation caused by the fluctuation of the loading amount, but also continuously utilizes the two data of the bottom height and the height of the encoder to reversely deduce the lance position of the converter smelting process at a certain moment;
the operation method for determining the lance position in the converter smelting process has the defects of inflexible use, indirect reflection of the important process control parameter of the lance position in the converter smelting process and incapability of updating in real time, and accidents such as splashing and slag overflow, oxygen lance burning leakage and the like caused by improper control of the lance position in the converter smelting process are easily caused in the smelting process, so that the normal production and the economic benefit of the converter are seriously influenced.
Disclosure of Invention
Aiming at the problems, the invention provides the operation method for accurately controlling the gun position in the converter smelting process, which can effectively guide the gun position control operation in the converter smelting process of the converter steelmaking worker, realize the real-time understanding of the gun position parameters in the converter smelting process, facilitate the timely and accurate adjustment of the gun position in the converter smelting process, and ensure the stable production process of the converter and the continuous optimization of various economic and technical indexes in production.
In order to realize the purpose of the invention, the invention is realized by the following technical scheme: an operation method for accurately controlling the lance position in the smelting process of a converter comprises the following steps:
s1: adding data of the loading amount of each furnace on a converter main control operation interface;
s2: adding furnace bottom height information on a converter master control operation interface;
s3: the lance position in the converter smelting process is calculated by utilizing the loading amount, the height of the furnace bottom and the height of an oxygen lance encoder on a main control operation computer, and the formula is as follows:
h＝H 0 +H/1000-(Q-130)/100；
in the formula, h: the converter smelting process gun position; h 0 : the encoder displays the height; h: a furnace bottom height value; q: loading amount;
s4: in the smelting process, the lance position h changes in real time along with the vertical movement of the oxygen lance in the smelting process of the converter so as to guide the production of the converter.
The further improvement lies in that: in the step S1, when the loading data of each furnace is added, the loading data is updated in real time and furnace by furnace.
The further improvement is that: and in the S2, adding the bottom height information, and updating the information after measuring the bottom height each time.
The further improvement is that: and in the S2, the input furnace bottom height is obtained according to the furnace volume ratio, particularly according to the corresponding metal liquid level height in the furnace when the default loading amount is T tons.
The further improvement lies in that: when the master control operation interface displays that the furnace bottom height is "-", the liquid level is higher than the converter reference furnace bottom height, and when the furnace bottom height is "+", the liquid level is lower than the converter reference furnace bottom height, and the statistical unit of the furnace bottom height is mm.
The further improvement is that: according to the furnace volume ratio, the default loading amount is increased by 1 ton, the corresponding furnace bottom height is increased by 10mm, the loading amount is reduced by 1 ton, and the corresponding furnace bottom height is reduced by 10mm.
The further improvement lies in that: in S3, the converter smelting process gun position is as follows: units (meters); encoder display height: units (meters); furnace bottom height value: units (meters); loading amount: unit (ton).
The further improvement lies in that: and in the S4, the lance position h in the smelting process of the converter reflects the distance between the oxygen lance nozzle and the metal liquid level in the converter.
The invention has the beneficial effects that:
1. according to the invention, the furnace bottom height, the loading amount and the data information of the converter smelting process gun position are added on a converter main control computer interface, the real-time converter smelting process gun position data are calculated by utilizing a computer program, a steelmaking worker operates an oxygen lance to different heights, the converter smelting process gun position parameter information can change along with the operation in real time on the computer operation interface, the accurate information of the converter smelting process gun position can be accurately reflected at any time, the converter steelmaking worker can be effectively guided to control the converter smelting process gun position, the converter smelting process gun position parameter can be known in real time, the converter smelting process gun position can be conveniently and accurately adjusted in time, and the stability of the converter production process and the continuous optimization of various economic and technical indexes of production are ensured.
2. According to the invention, through timely and accurate adjustment of the lance position, the smelting process of the converter can be stabilized, various economic and technical indexes of the converter are optimized, the service life of the copper head of the oxygen lance is prolonged, the loss of the copper head is reduced, the production of the converter is stabilized, and the influence of production accidents such as burning and leaking of the oxygen lance on the production efficiency and the economic and technical indexes of the converter is reduced; the method is favorable for reducing the splashing and the slag overflow of the converter smelting, reducing the environmental protection accidents of smoke generation, dust emission and the like of the smelting, and improving the recovery amount of the converter gas.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
For the purpose of enhancing understanding of the present invention, the present invention will be further described in detail with reference to the following examples, which are provided for illustration only and are not intended to limit the scope of the present invention.
Example one
According to the illustration in fig. 1, the embodiment provides an operation method for accurately controlling the lance position in the converter smelting process, which comprises the following steps:
s1: adding data of the loading amount of each furnace on a converter main control operation interface;
s2: adding furnace bottom height information on a converter master control operation interface;
s3: the lance position in the converter smelting process is calculated by utilizing the loading amount, the height of the furnace bottom and the height of an oxygen lance encoder on a main control operation computer, and the formula is as follows:
h＝H 0 +H/1000-(Q-130)/100；
in the formula, h: a lance position in the converter smelting process; h 0 : the encoder displays the height; h: a furnace bottom height value; q: loading amount;
s4: in the smelting process, the lance position h changes in real time along with the vertical movement of the oxygen lance in the smelting process of the converter so as to guide the production of the converter.
According to the invention, the furnace bottom height, the loading amount and the data information of the converter smelting process lance position are added on a converter main control computer interface, the real-time converter smelting process lance position data are calculated by utilizing a computer program and displayed at the position of a display on the main control room computer interface, a steelmaking worker operates an oxygen lance to different heights, the converter smelting process lance position parameter information can be changed in real time along with the operation on the computer operation interface, the accurate information of the converter smelting process lance position can be accurately reflected on the computer operation interface at any time, the converter smelting process lance position control operation of the converter steelmaking worker can be effectively guided, the converter smelting process lance position parameter can be known in real time, the converter smelting process lance position can be timely and accurately adjusted according to the difference of chemical reactions in the converter during different blowing periods, and the production process stability of the converter and the continuous optimization of various economic and technical indexes (steel materials, energy media, auxiliary material consumption and the like) are ensured.
Example two
According to the illustration in fig. 1, the embodiment provides an operation method for accurately controlling the lance position in the converter smelting process, which comprises the following steps:
and adding the data of the charging amount of each furnace on a main control operation interface of the converter to update the charging amount data from furnace to furnace.
Adding furnace bottom height information on a converter main control operation interface, and updating the information after measuring the furnace bottom height each time, wherein the input furnace bottom height is obtained according to a furnace volume ratio and experience, the furnace volume ratio is 130 tons according to a default loading amount, the corresponding furnace metal liquid level height is obtained, when the main control operation interface displays that the furnace bottom height is "-", the liquid level height is higher than the converter reference furnace bottom height, and when the furnace bottom height is "+", the liquid level height is lower than the converter reference furnace bottom height, the statistical unit of the furnace bottom height is mm; according to the furnace volume ratio and experience, the default loading amount is increased by 1 ton, the corresponding furnace bottom height is increased by 10mm, the loading amount is reduced by 1 ton, and the corresponding furnace bottom height is reduced by 10mm
The gun position formula in the converter smelting process is calculated by utilizing the loading amount, the height of the furnace bottom and the height of an oxygen lance encoder on a main control operation computer as follows: h = H 0 + H/1000- (Q-130)/100, wherein:
h: converter smelting process gun position, unit (meter)
H 0 : encoder display height, unit (meter)
H: height of furnace bottom, unit (meter)
Q: loading capacity (ton)
The method is characterized in that the furnace bottom height, the loading capacity and the data information of the converter smelting process gun position are added on a converter main control computer interface, the real-time converter smelting process gun position data are calculated by utilizing a computer program and are displayed at the position of a main control room computer interface, a steelmaking worker operates an oxygen lance to different heights, the converter smelting process gun position parameter information can change in real time along with the operation on the computer operation interface, the accurate information of the converter smelting process gun position can be accurately reflected at any time, the converter smelting process gun position control operation of the converter steelmaking worker is effectively guided, the converter smelting process gun position parameter can be known in real time, and the converter smelting process gun position can be timely and accurately adjusted.
The lance position h in the smelting process of the converter reflects the distance between a nozzle of the oxygen lance and the metal liquid level in the converter, and the lance position h changes in real time along with the vertical movement of the oxygen lance in the smelting process of the converter, so that the production of the converter is accurately guided in time. The method is beneficial to stabilizing the smelting process of the converter, optimizing various economic and technical indexes of the converter, prolonging the service life of the copper head of the oxygen lance, reducing the loss of the copper head, stabilizing the production of the converter and reducing the influence of production accidents such as oxygen lance burning leakage on the production efficiency and the economic and technical indexes of the converter.
Verification example:
in the actual production, the height of the encoder is displayed as 1.92 meters on a converter main control operation interface, the loading capacity of the converter is displayed as 137 tons on a main control chamber interface, the height of the bottom of the converter is-550 mm in the smelting process of the converter, and then the calculated oxygen lance position of the converter at the time is calculated as follows:
h =1.92+ (-550/1000) - (137-130)/100 =1.92-0.55-0.07=1.3 m
The height of the oxygen lance displayed on the main control operation interface of the converter is 1.3 meters, so the calculation result is consistent with the displayed oxygen lance height result.
According to the operating method for accurately controlling the lance position in the converter smelting process, data information of the height of the furnace bottom, the loading amount and the lance position in the converter smelting process is added on a main control computer interface of the converter, the lance position data in the real-time converter smelting process is calculated by utilizing a computer program and displayed at a prominent position on the main control room computer interface, a steelmaking operator operates an oxygen lance to different heights, the lance position parameter information in the converter smelting process can be changed in real time along with the operation on the computer operation interface, the accurate information of the lance position in the converter smelting process can be accurately reflected on the computer operation interface at any time, the lance position control operation in the converter smelting process of the converter steelmaking operator can be effectively guided, the lance position parameter in the converter smelting process can be known in real time, the lance position in the converter smelting process can be timely and accurately adjusted according to the difference of chemical reactions in the converter in different blowing periods, the production process of the converter is ensured to be stable, and various economic and technical indexes (steel materials, energy media, auxiliary material consumption and the like) produced are continuously optimized.
In conclusion, the invention can stabilize the smelting process of the converter and optimize various economic and technical indexes of the converter, such as: steel material consumption, auxiliary material consumption, energy medium consumption and the like. The service life of the copper head of the oxygen lance can be prolonged, the loss of the copper head is reduced, the production of the converter can be stabilized, and the influence of production accidents such as oxygen lance burning leakage on the production efficiency and economic and technical indexes of the converter is reduced; the development of converter protection is facilitated, and the service life of the converter is prolonged; the method can reduce the splashing and slag overflow of the converter smelting, reduce the environmental protection accidents of smoke, dust and the like during the smelting, and improve the recovery amount of the converter gas; the potential safety hazard caused by splashing and overflowing slag in the smelting process can be reduced, and the extra labor investment caused by overflowing slag in the cleaning process is reduced.
The foregoing shows and describes the general principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. An operation method for accurately controlling the lance position in the smelting process of a converter is characterized by comprising the following steps:
s1: adding data of the loading amount of each furnace on a converter main control operation interface;
s2: adding furnace bottom height information on a converter master control operation interface;
s3: the lance position in the converter smelting process is calculated by utilizing the loading capacity, the furnace bottom height and the height of an oxygen lance encoder on a master control operation computer, and the formula is as follows:
h＝H 0 +H/1000-(Q-130)/100；
in the formula, h: the converter smelting process gun position; h 0 : the encoder displays the height; h: a furnace bottom height value; q: loading amount;
s4: in the smelting process, the lance position h changes in real time along with the up-and-down movement of the oxygen lance in the smelting process of the converter so as to guide the production of the converter.
2. The operating method for accurately controlling the lance position in the converter smelting process according to claim 1, wherein the operating method comprises the following steps: in the step S1, when the loading data of each furnace is added, the loading data is updated in real time and furnace by furnace.
3. The operating method for accurately controlling the lance position in the converter smelting process according to claim 1, wherein the operating method comprises the following steps: and in the S2, adding the bottom height information, and updating the information after measuring the bottom height each time.
4. The operating method for accurately controlling the lance position in the converter smelting process according to claim 3, wherein the operating method comprises the following steps: and in the S2, the input furnace bottom height is obtained according to the furnace volume ratio, and the furnace volume ratio is obtained according to the corresponding metal liquid level height in the furnace when the default loading amount is T tons.
5. The operating method for accurately controlling the lance position in the converter smelting process according to claim 4, wherein the operating method comprises the following steps: when the master control operation interface displays that the furnace bottom height is "-", the liquid level is higher than the converter reference furnace bottom height, and when the furnace bottom height is "+", the liquid level is lower than the converter reference furnace bottom height, and the statistical unit of the furnace bottom height is mm.
6. The operating method for accurately controlling the lance position in the converter smelting process according to claim 5, wherein the operating method comprises the following steps: according to the furnace volume ratio, the default loading amount is increased by 1 ton, the corresponding furnace bottom height is increased by 10mm, the loading amount is reduced by 1 ton, and the corresponding furnace bottom height is reduced by 10mm.
7. The operating method for accurately controlling the lance position in the converter smelting process according to claim 1, wherein the operating method comprises the following steps: in S3, the converter smelting process gun position is as follows: units (meters); encoder display height: units (meters); furnace bottom height value: units (meters); loading amount: unit (ton).
8. The operating method for accurately controlling the lance position in the converter smelting process according to claim 1, wherein the operating method comprises the following steps: and in the S4, the lance position h in the smelting process of the converter reflects the distance between the oxygen lance nozzle and the metal liquid level in the converter.
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| CN202210853250.4A CN115369209A (en) | 2022-07-08 | 2022-07-08 | Operation method for accurately controlling lance position in converter smelting process |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107557520A (en) * | 2017-07-18 | 2018-01-09 | 唐山钢铁集团有限责任公司 | The autocontrol method of convertor steelmaking process charging, oxygen lance position and oxygen flow |
| CN114058776A (en) * | 2021-11-08 | 2022-02-18 | 阳春新钢铁有限责任公司 | Converter gun position correction model and method |
| JPWO2022124050A1 (en) * | 2020-12-11 | 2022-06-16 |
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- 2022-07-08 CN CN202210853250.4A patent/CN115369209A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107557520A (en) * | 2017-07-18 | 2018-01-09 | 唐山钢铁集团有限责任公司 | The autocontrol method of convertor steelmaking process charging, oxygen lance position and oxygen flow |
| JPWO2022124050A1 (en) * | 2020-12-11 | 2022-06-16 | ||
| CN114058776A (en) * | 2021-11-08 | 2022-02-18 | 阳春新钢铁有限责任公司 | Converter gun position correction model and method |
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