CN103215407A - Method for cleaning dry slag of assistant muzzle by flame at converter mouth - Google Patents
Method for cleaning dry slag of assistant muzzle by flame at converter mouth Download PDFInfo
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- CN103215407A CN103215407A CN2013101423615A CN201310142361A CN103215407A CN 103215407 A CN103215407 A CN 103215407A CN 2013101423615 A CN2013101423615 A CN 2013101423615A CN 201310142361 A CN201310142361 A CN 201310142361A CN 103215407 A CN103215407 A CN 103215407A
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Abstract
The invention relates to a method for cleaning dry slag of an assistant muzzle by flame at a converter mouth, and belongs to the technical field of steelmaking process devices. The technical scheme is as follows: the process flow comprises the following steps of: (1) when dry slag of an assistant muzzle (8) is found, opening a sealing cap remotely from a man-machine picture of a converter control system; dropping an oxygen gun (4) manually to a position which is 800-1000mm above the horizontal line of the converter mouth (2); (2) manually opening an oxygen valve of the oxygen gun (4) while opening the sealing cap remotely from the man-machine picture of the converter control system, and lifting the oxygen gun (4) for 100-200mm, wherein the oxygen gun is close to the assistant muzzle (8) to the maximum extent; and (3) brushing and melting steel slag on the inner wall of the assistant muzzle (8) by flame at the converter mouth (2) so as to automatically clean steel slag on the inner wall of the assistant muzzle (8). The method provided by the invention has the beneficial effects that the labor intensity and operational risk coefficient of workers are reduced, and the utilization efficiency of the assistant gun of the converter is improved.
Description
Technical field
The present invention relates to a kind of method of utilizing converter mouth flame cleaning sublance mouth dry slag, belong to the process for making equipment technical field.
Background technology
In process for making, along with sublance lifting process sublance mouth repeatedly, increasing slag is deposited in the sublance mouth along with sublance body promotes to touch in the converter furnace chamber, and the slag of bulk deposition can influence the normal measurement function of sublance, need regularly remove the slag in the sublance mouth.At present, the widely used method of background technology is to adopt burning torch scarfing cinder manually, in this case, there is two large problems, the one, sublance mouth temperature is too high, and manually people's labour intensity is excessive in the scarfing cinder process, can not work continuously, influence the service efficiency of revolving furnace sublance; The 2nd, the sublance mouth tightly links to each other with the oxygen muzzle, and environment position is relatively more dangerous, and the danger coefficient of operation is higher.
Summary of the invention
The object of the invention provides a kind of method of utilizing converter mouth flame cleaning sublance mouth dry slag, reduces people's labour intensity and operation danger coefficient, improves the service efficiency of revolving furnace sublance, solves the problems referred to above that exist in the background technology.
Technical scheme of the present invention is: utilize the method for converter mouth flame cleaning sublance mouth dry slag, comprise following steps:
1. when finding sublance mouth dry slag, the position of rifle to converter mouth sea line top 800-1000mm manually falls the oxygen rifle in Remote Open seal cap from the man-machine picture of converter control system, guarantees that this moment converter lining temperature is at 1000-1500 ℃;
2. on the man-machine picture of converter control system the Remote Open seal cap time, manually the oxygen valve of oxygen rifle is opened, guaranteed oxygen pressure 0.76-0.86Mpa this moment, and the position 100-200mm of lifting oxygen rifle, make the oxygen rifle at utmost near the sublance mouth;
3. utilize converter mouth flame, the slag on the sublance mouth inwall is washed away thawing, finish the slag on the automatic cleaning sublance mouth inwall.
According to what of slag amount in the sublance mouth, the oxygen blow duration of oxygen rifle maintains between the 60-300s, and in the use of aforesaid method, seal cap keeps often opening, and guarantees that high temperature gas flow can form good convection current in the sublance mouth, melts slag simultaneously.
The present invention is by improving the operating method of sublance seal cap, on the human-machine operation picture of converter control system, carry out the switching operation of seal cap, the high-temperature ignition burning is met in the position of the high pressure oxygen 800-1000mm above fire door that ejects in the converter oxygen gun simultaneously, the thermal-flame air-flow can form convection current and wash away slag on the inwall in the body of sublance oral cavity, utilize the temperature of air-flow that slag is melted, to reach the purpose of slagging-off.
Beneficial effect of the present invention: reduce people's labour intensity and operation danger coefficient, improve the service efficiency of revolving furnace sublance.
Description of drawings
Accompanying drawing 1 is an embodiment of the invention process schematic representation;
Among the figure: converter body 1, converter mouth 2, oxygen muzzle 3, oxygen rifle 4, sublance 5, the seal cap 6 of closing the shape body, the seal cap 7 under the open mode, sublance mouth 8, converter skirt cover 9.
Embodiment
The present invention will be further described by the following examples.
Embodiment 1.
Utilize the method for converter mouth flame cleaning sublance mouth dry slag, comprise following steps:
1. when finding sublance mouth (8) dry slag, the position of rifle to converter mouth (2) sea line top 800mm manually falls oxygen rifle (4) in Remote Open seal cap from the man-machine picture of converter control system, guarantees that this moment converter lining temperature is at 1500 ℃;
2. on the man-machine picture of converter control system in the Remote Open seal cap, manually the oxygen valve of oxygen rifle (4) is opened, guarantee that this moment, oxygen pressure was 0.80Mpa, and the position 100mm of lifting oxygen rifle (4), make the oxygen rifle at utmost near sublance mouth (8);
3. utilize converter mouth (2) flame, the slag on sublance mouth (8) inwall is washed away thawing, finish the slag on automatic cleaning sublance mouth (8) inwall.
Present embodiment is applicable to the sublance (5) of decarburization type or dephosphorization type converter body (1), cooperates oxygen rifle (4) to operate simultaneously.According to what of the interior slag amount of sublance mouth (8), the oxygen blow duration of oxygen rifle (4) is at 60s, and in the use of aforesaid method, seal cap keeps often opening, and guarantees that high temperature gas flow can form good convection current in sublance mouth (8), melts slag simultaneously.
Utilize the method for converter mouth flame cleaning sublance mouth dry slag, comprise following steps:
1. when finding sublance mouth (8) dry slag, the position of rifle to converter mouth (2) sea line top 1000mm manually falls oxygen rifle (4) in Remote Open seal cap from the man-machine picture of converter control system, guarantees that this moment converter lining temperature is at 1000 ℃;
2. on the man-machine picture of converter control system in the Remote Open seal cap, manually the oxygen valve of oxygen rifle (4) is opened, guarantee that this moment, oxygen pressure was 0.76Mpa, and the position 200mm of lifting oxygen rifle (4), make the oxygen rifle at utmost near sublance mouth (8);
3. utilize converter mouth (2) flame, the slag on sublance mouth (8) inwall is washed away thawing, finish the slag on automatic cleaning sublance mouth (8) inwall.
Present embodiment is applicable to the sublance (5) of decarburization type or dephosphorization type converter body (1), cooperates oxygen rifle (4) to operate simultaneously.According to what of the interior slag amount of sublance mouth (8), the oxygen blow duration of oxygen rifle (4) is at 200s, and in the use of aforesaid method, seal cap keeps often opening, and guarantees that high temperature gas flow can form good convection current in sublance mouth (8), melts slag simultaneously.
Embodiment 3.
Utilize the method for converter mouth flame cleaning sublance mouth dry slag, comprise following steps:
1. when finding sublance mouth (8) dry slag, the position of rifle to converter mouth (2) sea line top 920mm manually falls oxygen rifle (4) in Remote Open seal cap from the man-machine picture of converter control system, guarantees that this moment converter lining temperature is at 1200 ℃;
2. on the man-machine picture of converter control system in the Remote Open seal cap, manually the oxygen valve of oxygen rifle (4) is opened, guarantee that this moment, oxygen pressure was 0.86Mpa, and the position 150mm of lifting oxygen rifle (4), make the oxygen rifle at utmost near sublance mouth (8);
3. utilize converter mouth (2) flame, the slag on sublance mouth (8) inwall is washed away thawing, finish the slag on automatic cleaning sublance mouth (8) inwall.
Present embodiment is applicable to the sublance (5) of decarburization type or dephosphorization type converter body (1), cooperates oxygen rifle (4) to operate simultaneously.According to what of the interior slag amount of sublance mouth (8), the oxygen blow duration of oxygen rifle (4) is 300s, and in the use of aforesaid method, seal cap keeps often opening, and guarantees that high temperature gas flow can form good convection current in sublance mouth (8), melts slag simultaneously.
Utilize the method for converter mouth flame cleaning sublance mouth dry slag, comprise following steps:
1. when finding sublance mouth (8) dry slag, the position of rifle to converter mouth (2) sea line top 850mm manually falls oxygen rifle (4) in Remote Open seal cap from the man-machine picture of converter control system, guarantees that this moment converter lining temperature is at 1390 ℃;
2. on the man-machine picture of converter control system in the Remote Open seal cap, manually the oxygen valve of oxygen rifle (4) is opened, guarantee that this moment, oxygen pressure was 0.82Mpa, and the position 136mm of lifting oxygen rifle (4), make the oxygen rifle at utmost near sublance mouth (8);
3. utilize converter mouth (2) flame, the slag on sublance mouth (8) inwall is washed away thawing, finish the slag on automatic cleaning sublance mouth (8) inwall.
Present embodiment is applicable to the sublance (5) of decarburization type or dephosphorization type converter body (1), cooperates oxygen rifle (4) to operate simultaneously.According to what of the interior slag amount of sublance mouth (8), the oxygen blow duration of oxygen rifle (4) is 115s, and in the use of aforesaid method, seal cap keeps often opening, and guarantees that high temperature gas flow can form good convection current in sublance mouth (8), melts slag simultaneously.
Claims (4)
1. method of utilizing converter mouth flame cleaning sublance mouth dry slag is characterized in that comprising following steps:
1. when finding sublance mouth (8) dry slag, Remote Open seal cap from the man-machine picture of converter control system, manually oxygen rifle (4) is fallen the position of rifle, guarantee that the converter lining temperature is at 1000-1500 ℃ at this moment to converter mouth (2) sea line top 800-1000mm;
2. on the man-machine picture of converter control system in the Remote Open seal cap, manually the oxygen valve of oxygen rifle (4) is opened, guarantee that this moment, oxygen pressure was 0.76-0.86Mpa, and the position 100-200mm of lifting oxygen rifle (4), make the oxygen rifle at utmost near sublance mouth (8);
3. utilize converter mouth (2) flame, the slag on sublance mouth (8) inwall is washed away thawing, finish the slag on automatic cleaning sublance mouth (8) inwall.
2. the method for utilizing converter mouth flame cleaning sublance mouth dry slag according to claim 1, it is characterized in that: the oxygen blow duration of oxygen rifle maintains between the 60-300s, and seal cap keeps often opening, and high temperature gas flow forms good convection current in the sublance mouth.
3. the method for utilizing converter mouth flame cleaning sublance mouth dry slag according to claim 1 and 2, it is characterized in that: described step 1. in, manually oxygen rifle (4) is fallen the position of rifle to converter mouth (2) sea line top 850-1000mm, the converter lining temperature is at 1000-1390 ℃.
4. the method for utilizing converter mouth flame cleaning sublance mouth dry slag according to claim 1 and 2, it is characterized in that: the oxygen blow duration of oxygen rifle maintains between the 115-300s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101423615A CN103215407A (en) | 2013-04-23 | 2013-04-23 | Method for cleaning dry slag of assistant muzzle by flame at converter mouth |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101423615A CN103215407A (en) | 2013-04-23 | 2013-04-23 | Method for cleaning dry slag of assistant muzzle by flame at converter mouth |
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| CN103215407A true CN103215407A (en) | 2013-07-24 |
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| CN2013101423615A Pending CN103215407A (en) | 2013-04-23 | 2013-04-23 | Method for cleaning dry slag of assistant muzzle by flame at converter mouth |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105506217A (en) * | 2016-01-22 | 2016-04-20 | 河北钢铁股份有限公司邯郸分公司 | Method for online rapid cleaning of converter lance bonded steel slag |
| CN108588312A (en) * | 2018-04-23 | 2018-09-28 | 山西太钢不锈钢股份有限公司 | A method of processing blast furnace spray gun slagging |
| CN109576445A (en) * | 2018-11-27 | 2019-04-05 | 唐山钢铁集团有限责任公司 | The method for cleaning of RH lower channel and alloy feed opening dross |
| CN111575432A (en) * | 2020-04-26 | 2020-08-25 | 邯郸钢铁集团有限责任公司 | Semi-automatic slag removing method for sublance mouth |
| CN114015829A (en) * | 2021-10-20 | 2022-02-08 | 阳春新钢铁有限责任公司 | Method for cleaning slag adhered on converter cap |
| CN114214477A (en) * | 2021-12-03 | 2022-03-22 | 邯郸钢铁集团有限责任公司 | Method for reducing residue accumulation in nitrogen seal of sublance |
| CN115261558A (en) * | 2022-09-02 | 2022-11-01 | 唐山创微自动化设备有限公司 | Sublance mouth sealing cap |
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| WO2002099143A1 (en) * | 2001-06-05 | 2002-12-12 | Process Technology International, Inc. | Method for melting and decarburization of iron carbon melts |
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| CN201545871U (en) * | 2009-09-29 | 2010-08-11 | 河北钢铁股份有限公司 | Converter mouth-dedicated oxygen lance sprayer |
| JP2011074411A (en) * | 2009-09-29 | 2011-04-14 | Jfe Steel Corp | Top-blowing lance for refining, and converter refining method |
| CN102382944A (en) * | 2010-08-31 | 2012-03-21 | 山西太钢不锈钢股份有限公司 | Method for online rapid removal of residual molten steel on bottom blowing core of metallurgical container |
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2013
- 2013-04-23 CN CN2013101423615A patent/CN103215407A/en active Pending
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| WO2002099143A1 (en) * | 2001-06-05 | 2002-12-12 | Process Technology International, Inc. | Method for melting and decarburization of iron carbon melts |
| US20040178545A1 (en) * | 2003-03-14 | 2004-09-16 | Cates Larry E. | System for optically analyzing a molten metal bath |
| CN1995405A (en) * | 2006-12-28 | 2007-07-11 | 鞍钢股份有限公司 | Treatment method for removing bonded steel slag at maintenance fire hole of top-bottom combined blown converter |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105506217A (en) * | 2016-01-22 | 2016-04-20 | 河北钢铁股份有限公司邯郸分公司 | Method for online rapid cleaning of converter lance bonded steel slag |
| CN108588312A (en) * | 2018-04-23 | 2018-09-28 | 山西太钢不锈钢股份有限公司 | A method of processing blast furnace spray gun slagging |
| CN108588312B (en) * | 2018-04-23 | 2019-11-26 | 山西太钢不锈钢股份有限公司 | A method of processing blast furnace spray gun slagging |
| CN109576445A (en) * | 2018-11-27 | 2019-04-05 | 唐山钢铁集团有限责任公司 | The method for cleaning of RH lower channel and alloy feed opening dross |
| CN111575432A (en) * | 2020-04-26 | 2020-08-25 | 邯郸钢铁集团有限责任公司 | Semi-automatic slag removing method for sublance mouth |
| CN114015829A (en) * | 2021-10-20 | 2022-02-08 | 阳春新钢铁有限责任公司 | Method for cleaning slag adhered on converter cap |
| CN114015829B (en) * | 2021-10-20 | 2023-01-13 | 阳春新钢铁有限责任公司 | Method for cleaning slag adhered on converter cap |
| CN114214477A (en) * | 2021-12-03 | 2022-03-22 | 邯郸钢铁集团有限责任公司 | Method for reducing residue accumulation in nitrogen seal of sublance |
| CN114214477B (en) * | 2021-12-03 | 2023-03-03 | 邯郸钢铁集团有限责任公司 | Method for reducing residue accumulation in nitrogen seal of sublance |
| CN115261558A (en) * | 2022-09-02 | 2022-11-01 | 唐山创微自动化设备有限公司 | Sublance mouth sealing cap |
| CN115261558B (en) * | 2022-09-02 | 2024-04-26 | 唐山创微自动化设备有限公司 | Vice muzzle sealing cap |
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Application publication date: 20130724 |