CN115125353A - Smelting furnace for preventing electric precipitation explosion venting of converter and smelting process control method - Google Patents
Smelting furnace for preventing electric precipitation explosion venting of converter and smelting process control method Download PDFInfo
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- CN115125353A CN115125353A CN202210741738.8A CN202210741738A CN115125353A CN 115125353 A CN115125353 A CN 115125353A CN 202210741738 A CN202210741738 A CN 202210741738A CN 115125353 A CN115125353 A CN 115125353A
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- converter
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- smelting
- blowing
- electric precipitation
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- 238000003723 Smelting Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000004880 explosion Methods 0.000 title claims abstract description 30
- 238000013022 venting Methods 0.000 title claims abstract description 25
- 238000001556 precipitation Methods 0.000 title claims abstract description 21
- 238000004886 process control Methods 0.000 title claims abstract description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 73
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 71
- 239000001301 oxygen Substances 0.000 claims abstract description 71
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 71
- 238000007664 blowing Methods 0.000 claims abstract description 39
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- 239000002893 slag Substances 0.000 claims abstract description 24
- 230000002159 abnormal effect Effects 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 6
- 239000010703 silicon Substances 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 230000005856 abnormality Effects 0.000 claims abstract description 4
- CSJDCSCTVDEHRN-UHFFFAOYSA-N methane;molecular oxygen Chemical compound C.O=O CSJDCSCTVDEHRN-UHFFFAOYSA-N 0.000 claims abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 23
- 229910052799 carbon Inorganic materials 0.000 claims description 23
- 239000000428 dust Substances 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 8
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 8
- 238000010926 purge Methods 0.000 claims description 4
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005367 electrostatic precipitation Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/30—Regulating or controlling the blowing
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The application provides a smelting process control method for preventing electric precipitation explosion venting of a converter, which comprises the following steps: the oxygen blowing flow of the converter is reduced, more oxygen which is not fully combusted is reduced to enter a flue while the successful ignition of the molten steel is ensured, and the oxygen is blown to the preset smelting flow within 30 seconds; after the oxygen blow-on flow of the converter is reduced, the gun is lifted immediately when ignition abnormality is found, and the gun is put into the converter again to blow after the flue is purged by using nitrogen; the high silicon content of the molten iron needs to be smelted by a double-slag method, and the double-slag method is adopted for the first time before the carbon-oxygen reaction period; the method comprises the steps of putting a gun down again under abnormal conditions, adopting a point blowing mode, carrying out smelting operation after nitrogen blowing, and relating to the technical field of metallurgy.
Description
Technical Field
The invention relates to the technical field of metallurgy, in particular to a smelting furnace for preventing electric precipitation explosion venting of a converter and a smelting process control method.
Background
Compared with wet dust removal, the electric dust remover matched with the converter production line can reduce the sewage and sludge treatment cost and reduce the operation cost, but in the discharging process of the cathode wire and the anode plate in the electric dust removal, the proportion requirements on the contents of carbon monoxide, oxygen and hydrogen in gas are strict, and the blast can be generated when the gas exceeds the explosion limit range of the converter gas. Although the electric dust collector is provided with an explosion venting valve, the pressure generated by explosion can be released, the huge explosion pressure can still damage dust collection equipment, and a great potential safety hazard exists.
Therefore, the reduction of the explosion venting rate and the explosion venting grade of the electric dust remover are the directions of continuous research of converter steelmaking producers, and the invention provides the smelting process control method for preventing the electric dust remover of the converter from explosion venting, which can effectively avoid the explosion venting of the electric dust remover.
Disclosure of Invention
In order to overcome the existing defects, the embodiment of the application provides the smelting furnace for preventing electric precipitation explosion venting of the converter and the smelting process control method, and the control model of oxygen control, feeding control and proper fan rotating speed can avoid the coal gas explosion limit of the converter, effectively solve the explosion venting hidden danger problem generated in the use process of electrostatic precipitation of the converter, and achieve the aims of stable and reliable operation of equipment, reduction of potential safety hazards, guarantee of smoothness of production rhythm and improvement of stable and efficient production.
The technical scheme adopted by the embodiment of the application for solving the technical problem is as follows:
a smelting process control method for preventing electric precipitation explosion venting of a converter comprises the following steps:
step one, reducing the oxygen blowing flow of the converter, ensuring successful ignition of molten steel, simultaneously reducing more oxygen which is not fully combusted to enter a flue, and raising the oxygen to a preset smelting flow within 30 seconds of blowing;
step two, after the oxygen blowing-on flow of the converter is reduced, immediately lifting the gun when ignition is abnormal, and blowing the flue by using nitrogen and then putting the gun into the converter again to blow;
step three, when the silicon content of the molten iron is high, smelting by a double-slag method is needed, and the first gun lifting time of the double-slag method operation is before the carbon-oxygen reaction period;
and step four, putting the lance down again under abnormal conditions, adopting a point blowing mode, and carrying out smelting operation after nitrogen blowing.
Preferably, the flow rate of oxygen blown by the converter is adjusted to 18000Nm in the first step 3 /h。
Preferably, the duration of the abnormal ignition in the second step is 30 seconds, so that residual oxygen is prevented from entering electric precipitation, the position of blowing nitrogen after lifting the lance is 1600cm away from the molten pool, and oxygen in the converter is removed while air is blocked.
Preferably, the time for extracting the carbon monoxide by the double-slag method in the third step is limited within 5 minutes of blowing, so that the carbon monoxide is prevented from being rapidly increased after the carbon monoxide is discharged for the second time.
Preferably, in the fourth step, after the gun is lifted abnormally, the gun is put down again, and the operation of putting down again is as follows:
firstly, according to the carbon content of molten steel, the carbon content of the molten steel is less than 0.2%, after nitrogen purging is used, the flow of oxygen blown by a converter is set to be 18000Nm 3 H, operating;
secondly, according to the carbon content of the molten steel, the carbon content of the molten steel is not less than 0.2 percent or the carbon content of the molten steel cannot be accurately judged, the operation of slag pouring of the furnace is carried out before the furnace is put into the gun again, the rotating speed of a dust removal fan is reduced to 1000 revolutions per minute, nitrogen is blown for 2 minutes at the position of 1600cm by adopting the normal nitrogen flow of slag splashing nitrogen, the rotating speed of the fan is increased to the normal rotating speed before the nitrogen blowing is finished, and the oxygen flow is set to be not more than 14000Nm 3 And h, then carrying out smelting operation.
The embodiment of the application has the advantages that:
the invention adjusts the flow of the 'oxygen blowing on' to 18000Nm 3 H, can fully blow off the surface of the molten poolSlag surface and scrap steel ensure smooth ignition and reduce the entry of redundant oxygen into the flue.
The invention regulates the duration time of 'abnormal ignition' to be 30 seconds, avoids redundant oxygen from entering a flue in the ignition process, and regulates the operation under the abnormal ignition condition. The nitrogen blowing position is specified to be 1600cm, and the residual oxygen in the furnace can be cleaned, and simultaneously, the air at the flue opening can be blocked to enter the flue. The nitrogen blowing time is set to be 2 minutes, and the isolation flue and the oxygen in the furnace can be filled with nitrogen.
The invention limits the time for lifting the gun by the double slag method within 5 minutes, and can avoid the rapid generation of CO gas after the double slag method is put down again.
According to the method, specific operation is set according to the difference of the carbon content of the molten steel under the condition of abnormal lance lifting, explosion venting caused by the fact that the explosion limits of CO and O2 are rapidly reached under the process of high-tension complementary blowing is avoided, when the carbon content of the molten steel is larger than or equal to 0.2%, the rotating speed of a fan is adjusted to be reduced to 1000 revolutions per minute, then nitrogen is blown, and the effect of nitrogen isolation is guaranteed.
Drawings
FIG. 1 is a schematic cross-sectional view of the present invention.
Description of the main reference numerals:
1. a converter body; 2. a converter oxygen lance; 3. a dust removal flue.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention. In addition, for the convenience of description, the following references to "upper", "lower", "left" and "right" are to be construed as referring to the upper, lower, left, right, etc. direction of the attached drawings, and the following references to "first", "second", etc. are to be distinguished for descriptive purposes and not for other specific meanings.
In order to solve the above problems, the technical solution in the embodiment of the present application has the following general idea:
example 1
The embodiment provides a specific structure of a smelting process control method for preventing electric precipitation and explosion venting of a converter, and the smelting process control method for preventing electric precipitation and explosion venting of the converter comprises the following steps:
step one, reducing the oxygen blowing flow of the converter, ensuring successful ignition of molten steel, simultaneously reducing more oxygen which is not fully combusted to enter a flue, and increasing the oxygen to a preset smelting flow within 30 seconds of blowing;
step two, after the oxygen blow-on flow of the converter is reduced, immediately lifting the gun when ignition abnormality is found, and blowing off the gun again to blow after the nitrogen is used for blowing the flue;
step three, smelting molten iron with high silicon content by a double-slag method, wherein the first gun lifting time of the double-slag method operation is selected before the carbon-oxygen reaction period;
and step four, putting the lance again under abnormal conditions, adopting a point blowing mode, and carrying out smelting operation after nitrogen purging.
In the step one, the flow of the oxygen blown by the converter is adjusted to 18000Nm 3 The success rate of oxygen ignition is improved, and the preset smelting flow is 20000-plus 24000Nm 3 And h, prohibiting feeding before the oxygen flow reaches a preset flow, and feeding cannot be concentrated too much in the early stage of smelting.
And in the second step, the ignition abnormal duration is 30 seconds, then the furnace is shaken back and forth to be more than 40 degrees, and after the furnace body is shaken right, the oxygen lance blows nitrogen for 2 minutes at a position 1600cm away from the molten pool by adopting the normal slag splashing nitrogen flow. After the nitrogen is blown, the operation is carried out according to the smelting operation, the nitrogen at the position of the oxygen lance which is 1600cm away from the molten pool can clean the residual oxygen in the furnace, and the air at the flue opening is blocked to enter the flue.
In the third step, the time for extracting the carbon monoxide by the double slag method is limited within 5 minutes of blowing, so that the carbon monoxide gas is prevented from being rapidly increased after the carbon monoxide gas is discharged for the second time.
And in the fourth step, after the gun is lifted abnormally, the gun is put down again, and the oxygen flow is set for operation according to the carbon content of the molten steel.
The gun is put down again after the abnormal gun lifting:
root of one, rootAccording to the carbon content of the molten steel, the carbon content of the molten steel is less than 0.2 percent, after nitrogen purging is used, the flow of oxygen blown by a converter is set to be 18000Nm 3 H, operating;
and secondly, performing furnace shaking and deslagging operation before the gun is put down again according to the carbon content of the molten steel, wherein the carbon content of the molten steel is not less than 0.2% or the carbon content of the molten steel cannot be accurately judged, the furnace must be shaken back and forth under the wet condition of the scrap steel to prevent explosion venting caused by over-standard H content, the rotating speed of a dust removal fan is reduced to 1000 revolutions per minute, nitrogen is blown for 2 minutes at the position of 1600cm by adopting the normal nitrogen flow for slag splashing, and the rotating speed of the fan is increased to the normal rotating speed before nitrogen blowing is finished.
After the gun feeding conditions are all met, the oxygen flow is set to be less than or equal to 14000Nm 3 And h, carrying out smelting operation.
Example 2
This embodiment provides a prevent that converter electric precipitation from letting out concrete structure of smelting furnace of exploding, as shown in FIG. 1, include: the converter comprises a converter body 1, wherein the converter body 1 is of a hollow structure, a converter molten pool is arranged in the converter body 1, the upper surface of the converter body 1 is of an open structure, a dust removal flue 3 is arranged on the upper surface of the open structure, a converter oxygen lance 2 penetrates through the interior of the dust removal flue 3, and the dust removal flue 3 is a fixed flue; the converter body 1 is fixedly connected with a rotary speed reducer arranged above.
The converter oxygen lance 2 and the dedusting flue 3 are sealed by using nitrogen gas curtains, so that the converter oxygen lance 2 has better sealing property in the ascending and descending processes, and the lower surface of the converter oxygen lance 2 is of an open structure.
The position of the converter oxygen lance 2 is lowered to be 200cm away from the converter molten pool, the medium gas sprayed by the converter oxygen lance 2 is changed into oxygen, and the oxygen flow is adjusted to be 14000Nm 3 And after the reaction is carried out for one hour, blowing is carried out until the smelting is finished.
The working principle is as follows: when the method is used, if the waste steel contained in the converter in the first step is wet, the converter shaking operation is carried out, and the waste steel is roasted in the converter body 1. Secondly, opening the oxygen medium oxygen of the converter oxygen lance 2 at the position of the converter molten pool 200cm away from the slag surface, and setting the oxygen flow at 18000Nm 3 H, the oxygen flow is adjusted to 20000 plus 24000Nm within 30 seconds after the oxygen blowing of the gas medium 3 H is used as the reference value. Third step, gasIf the ignition abnormality occurs within 30 seconds after the oxygen in the body medium is blown, immediately lifting the oxygen lance 2 of the converter above the converter body 1, shaking the converter forward and backward by more than 40 degrees, after the converter body 1 is shaken forward, keeping the oxygen lance 2 of the converter at a position 1600cm away from a converter molten pool in the converter body 1, opening the nitrogen in the gas medium by the oxygen lance 2 of the converter, and blowing the nitrogen for 2 minutes. And step four, if the silicon content of the molten iron is high, smelting by a double-slag method is needed, selecting that the time for blowing oxygen is less than 5 minutes, starting to produce the first batch of slag after the slag melting of a converter molten pool is well melted, and if the silicon content of the molten iron is normal and the operation of the double-slag method is not needed, directly carrying out the step five without carrying out the step four. Fifthly, abnormal conditions or high-tension complementary blowing occur in the blowing process, so that the converter oxygen lance 2 is lifted above the converter body 1, and normal oxygen flow blowing is set according to the carbon content of molten steel in the molten pool if the carbon content is less than 0.2%; if the carbon content is more than or equal to 0.2 percent or the carbon content of the molten steel cannot be judged, the converter body 1 is shaken forward to pour slag, the rotating speed of a dust removal fan is reduced to 1000 revolutions per minute, medium gas of the converter oxygen lance 2 is blown for 2 minutes by using nitrogen at the position 1600cm away from the molten pool, after the nitrogen blowing is finished, the position of the converter oxygen lance 2 is reduced to 200cm away from the molten pool, the medium gas is changed into oxygen, and the oxygen flow is adjusted to 14000Nm 3 And after h, blowing till the smelting is finished.
Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (10)
1. A smelting process control method for preventing electric precipitation explosion venting of a converter is characterized by comprising the following steps of:
step one, reducing the oxygen blowing flow of the converter, ensuring successful ignition of molten steel, simultaneously reducing more oxygen which is not fully combusted to enter a flue, and increasing the oxygen to a preset smelting flow within 30 seconds of blowing;
step two, after the oxygen blow-on flow of the converter is reduced, immediately lifting the gun when ignition abnormality is found, and blowing off the gun again to blow after the nitrogen is used for blowing the flue;
step three, when the silicon content of the molten iron is high, smelting by adopting a double-slag method, wherein the first gun lifting time of the double-slag method operation is before the carbon-oxygen reaction period;
and step four, putting the lance again under abnormal conditions, adopting a point blowing mode, and carrying out smelting operation after nitrogen purging.
2. The smelting process control method for preventing electric precipitation explosion venting of the converter according to claim 1, wherein in the first step, the flow of oxygen blown by the converter is adjusted to 18000Nm 3 /h。
3. The smelting process control method for preventing electric precipitation explosion venting of the converter according to claim 1, wherein the ignition abnormal duration in the second step is 30 seconds for preventing residual oxygen from entering electric precipitation, and the position for blowing nitrogen after lifting the lance is 1600cm away from the molten pool, so that oxygen in the converter is removed while air is blocked from entering the flue.
4. The smelting process control method for preventing electric precipitation explosion venting of the converter according to claim 1, wherein the time for lifting the lance in the three-step double slag method is limited within 5 minutes of blowing on, so as to avoid rapid increase of carbon monoxide gas after secondary lance discharge.
5. The smelting process control method for preventing electric precipitation explosion venting of the converter according to claim 1, wherein in the fourth step, after abnormal lance lifting, lance pulling is performed again, and oxygen flow is set for operation according to carbon content of molten steel.
6. The smelting process control method for preventing electric precipitation explosion venting of the converter according to claim 5, wherein the gun is released again after the abnormal gun lifting as follows:
firstly, setting oxygen flow for operation according to the carbon content of molten steel, wherein the carbon content of the molten steel is less than 0.2%;
secondly, when the carbon content of the molten steel is more than or equal to 0.2 percent according to the carbon content of the molten steel or the carbon content of the molten steel cannot be accurately judged, the operation of shaking the furnace and deslagging is carried out before the gun is put down again, the rotating speed of a dust removal fan is reduced to 1000 revolutions per minute, nitrogen is blown for 2 minutes at the position of 1600cm by adopting the normal nitrogen flow of slag splashing nitrogen, and the rotating speed of the fan is increased to the normal rotating speed before nitrogen blowing is finished.
7. The smelting process control method for preventing electric precipitation explosion venting of the converter according to claim 1, wherein the oxygen flow setting is no more than 14000Nm after all the lance feeding conditions are met 3 And h, carrying out smelting operation.
8. The utility model provides a prevent that converter electric precipitation from letting out smelting furnace of exploding which characterized in that includes: the converter body (1), converter body (1) is hollow structure, the upper surface of converter body (1) is open structure, and open structure's upper surface is equipped with dust removal flue (3), and the inside of dust removal flue (3) is run through has converter oxygen rifle (2).
9. A smelting furnace for preventing electric precipitation explosion venting of a converter according to claim 8, characterized in that a converter molten pool is arranged inside the converter body (1).
10. A smelting furnace for preventing electric precipitation explosion venting of a converter according to claim 8, wherein the lower surface of the converter oxygen lance (2) is provided with a gas outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210741738.8A CN115125353A (en) | 2022-06-28 | 2022-06-28 | Smelting furnace for preventing electric precipitation explosion venting of converter and smelting process control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210741738.8A CN115125353A (en) | 2022-06-28 | 2022-06-28 | Smelting furnace for preventing electric precipitation explosion venting of converter and smelting process control method |
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| CN115125353A true CN115125353A (en) | 2022-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210741738.8A Withdrawn CN115125353A (en) | 2022-06-28 | 2022-06-28 | Smelting furnace for preventing electric precipitation explosion venting of converter and smelting process control method |
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| Country | Link |
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| CN (1) | CN115125353A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115652015A (en) * | 2022-10-31 | 2023-01-31 | 山东莱钢永锋钢铁有限公司 | Method for avoiding explosion venting in dry dedusting double-slag operation of converter |
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| CN101880744A (en) * | 2010-07-09 | 2010-11-10 | 北京首钢国际工程技术有限公司 | Decarburization converter exhaust gas treatment method utilizing dry-method dust-removing process for electric precipitation without explosion release |
| JP2013049890A (en) * | 2011-08-31 | 2013-03-14 | Jfe Steel Corp | Converter blowing method |
| CN104831015A (en) * | 2015-04-21 | 2015-08-12 | 河北钢铁股份有限公司承德分公司 | Method for avoiding explosion venting of electrostatic dust collector in iron mixing process of converter |
| CN107794333A (en) * | 2016-09-06 | 2018-03-13 | 鞍钢股份有限公司 | Method for preventing explosion venting after interruption of converter blowing |
| CN107805683A (en) * | 2017-11-06 | 2018-03-16 | 河钢股份有限公司承德分公司 | The method for preventing electrostatic precipitation venting of dust explosion during the double slag meltings of converter |
| CN113215346A (en) * | 2021-05-19 | 2021-08-06 | 宝武集团鄂城钢铁有限公司 | Smelting method for reducing explosion venting incidence rate of converter |
-
2022
- 2022-06-28 CN CN202210741738.8A patent/CN115125353A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880744A (en) * | 2010-07-09 | 2010-11-10 | 北京首钢国际工程技术有限公司 | Decarburization converter exhaust gas treatment method utilizing dry-method dust-removing process for electric precipitation without explosion release |
| JP2013049890A (en) * | 2011-08-31 | 2013-03-14 | Jfe Steel Corp | Converter blowing method |
| CN104831015A (en) * | 2015-04-21 | 2015-08-12 | 河北钢铁股份有限公司承德分公司 | Method for avoiding explosion venting of electrostatic dust collector in iron mixing process of converter |
| CN107794333A (en) * | 2016-09-06 | 2018-03-13 | 鞍钢股份有限公司 | Method for preventing explosion venting after interruption of converter blowing |
| CN107805683A (en) * | 2017-11-06 | 2018-03-16 | 河钢股份有限公司承德分公司 | The method for preventing electrostatic precipitation venting of dust explosion during the double slag meltings of converter |
| CN113215346A (en) * | 2021-05-19 | 2021-08-06 | 宝武集团鄂城钢铁有限公司 | Smelting method for reducing explosion venting incidence rate of converter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115652015A (en) * | 2022-10-31 | 2023-01-31 | 山东莱钢永锋钢铁有限公司 | Method for avoiding explosion venting in dry dedusting double-slag operation of converter |
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Application publication date: 20220930 |