CN103882244B - Oxygen-enriched air converting devices and methods therefor - Google Patents
Oxygen-enriched air converting devices and methods therefor Download PDFInfo
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- CN103882244B CN103882244B CN201410140113.1A CN201410140113A CN103882244B CN 103882244 B CN103882244 B CN 103882244B CN 201410140113 A CN201410140113 A CN 201410140113A CN 103882244 B CN103882244 B CN 103882244B
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Abstract
Oxygen-enriched air converting device, comprises blowing spray gun and spray gun bracing or strutting arrangement, blowing spray gun comprise blowing tracheae, spray gun outer tube and between spray gun outer tube and blowing tracheae in spacer tube; Spray gun bracing or strutting arrangement is that the groove of semicircular arc is positioned at below blowing rifle, is at least provided with 3 pair rollers in groove, and blowing spray gun pillow is on roller.The converting method being applicable to this oxygen-enriched air converting device is: 1) after deslagging, blowing spray gun front end face is extended copper ullage 10 ~ 30cm place, passes into the gas mixture of oxygen and air, air flow quantity is 4000 ~ 11000Nm
3/ h, air pressure 0.3 ~ 0.4MPa, oxygen flow is 200 ~ 300Nm
3/ h, blows 10 ~ 20 minutes.2) oxygen flow is reduced to 100 ~ 150Nm
3/ h, oxygen-enriched air converting 10 ~ 20 minutes.3) close oxygen switch, carry out converting with air, until blown.Use this blowing technology can boost productivity, alleviate labor strength, extend the work-ing life of blowing spray gun.
Description
Technical field
The present invention relates to technical field of smelting, specifically a kind of oxygen-enriched air converting devices and methods therefor.
Background technology
At present, the blowing operation of blister copper production technique mainly contains following several:
PS bessemerizes.This technology completes whole converting process in the body of heater not stopping rotation, and blowing operation need through blowing slag making, blowing two cycles of desulfurization.Because the periodic breaks of PS converter operates, low vacancy pollution is serious, production automation level is low, cannot meet the requirement of current smelting industry to environmental protection.
Ausmelt furnace blows.When utilizing Ausmelt furnace to blow, blowing spray gun vertically inserts from furnace roof in the slag blanket in furnace chamber molten bath, and first slag is oxidized under the violent stirring of blowing gas, is exchanged and complete the oxidizing reaction of converting process by the oxygen of slag blanket and copper water.Because spray gun during blowing need be immersed in slag blanket, blowing wind easily causes the foamed of slag to the direct effect of slag blanket, cause serious industrial accident, blowing wind oxygen level is larger, slag bubble level is more serious, and, rifle surface will be corroded with direct contact of slag, impact blowing rifle work-ing life.Although, Chinese invention patent application prospectus CN101148705A discloses one " a kind of method of converting furnace oxygen-enriched air converting copper ", Ausmelt furnace blowing technology is optimized, propose limit and add the blowing of cold or hot matte limit, a cycle employing oxygen enrichment and two cycles stopping oxygen enrichment mode, when pointing out that oxygen pressure is greater than internal layer blast, rifle position allows to adopt oxygen enrichment at blowing position, and internal pressure is greater than oxygen pressure, stop oxygen enrichment operation, carry out converting with air; This patent also points out that operator need judge and the actual stirring situation of spray gun in stove different steps melt layer thickness, Comprehensive Control position of lances, and after oxygen-rich air is blown into slag by guarantee spray gun, slag fully can stir with matte.Though this technology is to a certain degree controlling the generation of foamy slag, Shortcomings part: on the one hand, only having during blowing operation and exchanging the oxidizing reaction that just can complete copper liquid by the oxygen of slag blanket and copper water, have impact on blowing efficiency; On the other hand, operate more loaded down with trivial details, we need to change blowing gas at any time according to the size of oxygen pressure, internal layer blast at any time, and, metal worker also needs not stop alternately to add cold or hot matte, and changing Burners Positions according to melt layer thickness in stove, this adds the labour intensity of workman undoubtedly.
Summary of the invention
The object of the invention is to solve the problem existing for above-mentioned existing blowing technology, provide a kind of oxygen-enriched air converting devices and methods therefor, use this technology can boost productivity, alleviate labor strength, extend the work-ing life of blowing spray gun.
The present invention is achieved through the following technical solutions above-mentioned purpose:
Oxygen-enriched air converting device, comprise blowing spray gun and spray gun bracing or strutting arrangement, blowing spray gun comprise blowing tracheae, spray gun outer tube and between spray gun outer tube and blowing tracheae in spacer tube, the rear end of the rear end of spray gun outer tube and the rear portion of middle spacer tube, middle spacer tube is all connected by joint flange, bolt with after the tracheae that blows; Spray gun outer tube, blowing tracheae are divided into loopback cooling passage by described middle spacer tube, and loopback cooling passage is closed by Closed loop; Cooling liquid inlet joint and cooling liquid outlet joint is also provided with at described spray gun outer tube and middle spacer tube rear portion; Described spray gun bracing or strutting arrangement is that the groove of semicircular arc is positioned at below blowing rifle, is at least provided with 3 pair rollers in groove, and blowing spray gun pillow is on the roller of spray gun bracing or strutting arrangement.
Blowing spray gun enters burner hearth part and preferably adopts high temperature alloy.
Be applicable to a converting method for above-mentioned oxygen-enriched air converting device, comprise the following steps:
1) after converting furnace deslagging operation, open circulating cooling liquid switch, coolant rate is 27Nm
3/ h, hydraulic coupling is 110 ~ 160kPa, extends in furnace chamber by blowing spray gun, and blowing spray gun front end face is from copper liquid liquid level 10 ~ 30cm, and the gas mixture passing into oxygen and air in blowing tracheal entrance carries out oxygen-enriched air converting, and air flow quantity is 4000 ~ 11000Nm
3/ h, air pressure 0.3 ~ 0.4MPa, oxygen flow is 200 ~ 300Nm
3/ h, blows 10 ~ 20 minutes.
2) reducing oxygen flow, is 100 ~ 150Nm by oxygen flux control
3/ h, continues oxygen-enriched air converting 10 ~ 20 minutes.
3) close oxygen switch, stop oxygen-enriched air converting, carry out converting with air, until blown.
Owing to have employed technique scheme, the present invention compared with prior art has following beneficial effect:
1, adopt oxygen-enriched air converting operation stage by stage, shorten duration of blast, improve productivity, company's duration of blast shortened to 40 ~ 50 minutes by original 1 hour.
2, adopt the present invention to blow device, metal worker only need adjust oxygen flow according to the time, easy and simple to handle, alleviates the labour intensity of workman widely.
3, adopt high temperature alloy because blowing spray gun enters burner hearth part, be arranged with unique refrigerating unit outside spray gun tracheae, and also directly do not contact with molten metal during operation, the work-ing life of the spray gun that thus blows is longer.
Accompanying drawing explanation
Fig. 1 is oxygen-enriched air converting device schematic diagram of the present invention.
Fig. 2 is blowing spray gun full sectional view.
Embodiment
Embodiment 1
As Fig. 1, oxygen-enriched air converting device shown in Fig. 2, oxygen-enriched air converting device comprises blowing spray gun 1 and spray gun bracing or strutting arrangement 2, blowing spray gun 1 comprises blowing tracheae 3, spray gun outer tube 4 and middle spacer tube 5, middle spacer tube 5 is between spray gun outer tube 4 and blowing tracheae 3, the rear end of spray gun outer tube 4 and the rear portion of middle spacer tube 5, all by joint flange 6 after the rear end of middle spacer tube 5 and blowing tracheae 3, bolt 7 is connected, middle spacer tube 5 is by spray gun outer tube 4, blowing tracheae 3 is divided into loopback cooling passage 8, in loopback cooling passage 8, cooling fluid is closed by Closed loop 9, cooling liquid inlet joint 10 and cooling liquid outlet joint 11 is also provided with at spray gun outer tube 4 and middle spacer tube 5 rear portion, during work, cooling fluid flows into from cooling liquid inlet joint 10, cooling liquid flowing forces cooling through loopback cooling passage 8 to blowing spray gun 1, finally flow out from cooling liquid outlet joint 11.
Spray gun bracing or strutting arrangement 2 is that the groove 12 of semicircular arc is positioned at below blowing rifle, 3 pair rollers 13 are at least provided with in groove 12, blowing spray gun 1 is rested the head on the roller 13 of spray gun bracing or strutting arrangement 2, under the effect driven, blowing spray gun 1 passes in and out converting furnace furnace chamber, and roller 13 rotates the resistance reducing the turnover of blowing spray gun 1 thereupon.Blowing spray gun enters burner hearth part and adopts high temperature alloy, extends the work-ing life of blowing spray gun.
Be applicable to the converting method of above-mentioned oxygen-enriched air converting device, comprise the following steps:
1) when the refining slag being doped with 40% in feed stock for blast furnace, when entering stove copper grade 45%.After converting furnace deslagging operation, open circulating cooling liquid switch, coolant rate is 27Nm
3/ h, hydraulic coupling is 110 ~ 160kPa, blowing spray gun is extended in furnace chamber, blowing spray gun front end face is from copper liquid liquid level 10 ~ 30cm, particular location is depending on the splashing situation of copper liquid in converting furnace, as copper liquid splashes the serious distance then increasing blowing spray gun front end face and copper liquid liquid level, the gas mixture then passing into oxygen and air in the tracheal entrance that blows carries out oxygen-enriched air converting, and air flow quantity is 4000 ~ 11000Nm
3/ h, air pressure 0.3 ~ 0.4MPa, oxygen flow is 300Nm
3/ h, blowing maintenance 20 minutes.Oxygen rich gas jet, by the ejection at a high speed of blowing gun head, entrainments inner flue gas of the stove and washes away liquid copper liquid in stove, make copper liquid rapid oxidation, and now, copper liquid, slag directly do not contact with blowing spray gun, can not corrode rifle body, extend the work-ing life of blowing spray gun.
2) reducing oxygen flow, is 150Nm by oxygen flux control
3/ h, continues oxygen-enriched air converting 10 minutes.
3) close oxygen switch, stop oxygen-enriched air converting, carry out converting with air, until blown.
Embodiment 2
The difference of the present embodiment and embodiment 1 is, do not adulterate in feed stock for blast furnace refining slag, when entering stove copper grade 70%.The converting method of oxygen-enriched air converting device, comprises the following steps:
1) after converting furnace deslagging operation, open circulating cooling liquid switch, coolant rate is 27Nm
3/ h, hydraulic coupling is 110 ~ 160kPa, blowing spray gun is extended in furnace chamber, blowing spray gun front end face is from copper liquid liquid level 10 ~ 30cm, particular location is depending on the splashing situation of copper liquid in converting furnace, as copper liquid splashes the serious distance then increasing blowing spray gun front end face and copper liquid liquid level, the gas mixture then passing into oxygen and air in the tracheal entrance that blows carries out oxygen-enriched air converting, and air flow quantity is 4000 ~ 11000Nm
3/ h, air pressure 0.3 ~ 0.4MPa, oxygen flow is 200Nm
3/ h, blowing maintenance 10 minutes.Oxygen rich gas jet, by the ejection at a high speed of blowing gun head, entrainments inner flue gas of the stove and washes away liquid copper liquid in stove, make copper liquid rapid oxidation, and now, copper liquid, slag directly do not contact with blowing spray gun, can not corrode rifle body, extend the work-ing life of blowing spray gun.
2) reducing oxygen flow, is 100Nm by oxygen flux control
3/ h, continues oxygen-enriched air converting 20 minutes.
3) close oxygen switch, stop oxygen-enriched air converting, carry out converting with air, until blown.
Claims (2)
1. a converting method for oxygen-enriched air converting device, is characterized in that, described oxygen-enriched air converting device comprises blowing spray gun and spray gun bracing or strutting arrangement, described blowing spray gun comprise blowing tracheae, spray gun outer tube and between spray gun outer tube and blowing tracheae in spacer tube; The rear end of described spray gun outer tube is all connected by joint flange, bolt with after blowing tracheae with the rear end of the rear portion of middle spacer tube, middle spacer tube; Spray gun outer tube, blowing tracheae are divided into loopback cooling passage by described middle spacer tube, and loopback cooling passage is closed by Closed loop; Cooling liquid inlet joint and cooling liquid outlet joint is also provided with at described spray gun outer tube and middle spacer tube rear portion; Described spray gun bracing or strutting arrangement is that the groove of semicircular arc is positioned at below blowing rifle, is at least provided with 3 pair rollers in groove, and blowing spray gun pillow is on the roller of spray gun bracing or strutting arrangement; The converting method of described oxygen-enriched air converting device, comprises the following steps:
1) after converting furnace deslagging operation, open circulating cooling liquid switch, coolant rate is 27Nm
3/ h, hydraulic coupling is 110 ~ 160kPa, extends in furnace chamber by blowing spray gun, and blowing spray gun front end face is from copper liquid liquid level 10 ~ 30cm, and the gas mixture passing into oxygen and air in blowing tracheal entrance carries out oxygen-enriched air converting, and air flow quantity is 4000 ~ 11000Nm
3/ h, air pressure 0.3 ~ 0.4MPa, oxygen flow is 200 ~ 300Nm
3/ h, blows 10 ~ 20 minutes;
2) reducing oxygen flow, is 100 ~ 150Nm by oxygen flux control
3/ h, continues oxygen-enriched air converting 10 ~ 20 minutes;
3) close oxygen switch, stop oxygen-enriched air converting, carry out converting with air, until blown.
2. the converting method of oxygen-enriched air converting device according to claim 1, is characterized in that, described blowing spray gun enters burner hearth part and all adopts high temperature alloy.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410140113.1A CN103882244B (en) | 2014-04-09 | 2014-04-09 | Oxygen-enriched air converting devices and methods therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410140113.1A CN103882244B (en) | 2014-04-09 | 2014-04-09 | Oxygen-enriched air converting devices and methods therefor |
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| CN103882244A CN103882244A (en) | 2014-06-25 |
| CN103882244B true CN103882244B (en) | 2015-09-02 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106868315A (en) * | 2017-04-06 | 2017-06-20 | 赤峰云铜有色金属有限公司 | A kind of lift for top-blown bath rotates oxygen rifle |
| CN110564976B (en) * | 2019-10-17 | 2021-05-14 | 大冶有色金属有限责任公司 | Process method for automatically dropping spray gun weight of Ausmelt furnace |
| CN114369728B (en) * | 2021-12-07 | 2023-09-01 | 广西金川有色金属有限公司 | Top-blown oxidation-reduction method for refining furnace |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2331936Y (en) * | 1998-03-19 | 1999-08-04 | 李勇敏 | Multifunction spray gun for electric furnace steel making |
| CN101148705A (en) * | 2007-11-09 | 2008-03-26 | 中条山有色金属集团有限公司 | Oxygen-enriched air refining method for copper by using converting furnace |
| CN101929803A (en) * | 2009-06-25 | 2010-12-29 | 中国恩菲工程技术有限公司 | Non-immersed top-blown spray gun |
| CN202576473U (en) * | 2012-04-10 | 2012-12-05 | 江苏博际喷雾***有限公司 | Supersonic flat oxygen lance for electric furnace |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61127835A (en) * | 1984-11-26 | 1986-06-16 | Sumitomo Metal Mining Co Ltd | Blowing method of copper converter |
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2014
- 2014-04-09 CN CN201410140113.1A patent/CN103882244B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2331936Y (en) * | 1998-03-19 | 1999-08-04 | 李勇敏 | Multifunction spray gun for electric furnace steel making |
| CN101148705A (en) * | 2007-11-09 | 2008-03-26 | 中条山有色金属集团有限公司 | Oxygen-enriched air refining method for copper by using converting furnace |
| CN101929803A (en) * | 2009-06-25 | 2010-12-29 | 中国恩菲工程技术有限公司 | Non-immersed top-blown spray gun |
| CN202576473U (en) * | 2012-04-10 | 2012-12-05 | 江苏博际喷雾***有限公司 | Supersonic flat oxygen lance for electric furnace |
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Owner name: CHONGQING RADIO AND TV UNIVERSITY, LU XUZHI Free format text: FORMER OWNER: CENXI DONGZHENG POWER SCIENCE + TECHNOLOGY DEVELOPMENT CO., LTD. Effective date: 20150803 |
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Inventor after: Zhang Geng Inventor before: Zou Tiemei Inventor before: Zuo Jianxiong |
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Effective date of registration: 20150803 Address after: A road 400000 Chongqing Jiulongpo District of Shiqiaopu Science Park Applicant after: Chongqing Radio and TV University, Lu Xuzhi Address before: 543200 the Guangxi Zhuang Autonomous Region, Cenxi City, Canton Road, No. 96, the first floor of the first floor, No. Applicant before: East, Cenxi City ahead power Science and Technology Development Co., Ltd. |
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Effective date of registration: 20161123 Address after: In Dazu County, Chongqing city 402366 beam town streets 1 groups Patentee after: Qin Qin Address before: A road 400000 Chongqing Jiulongpo District of Shiqiaopu Science Park Patentee before: Chongqing Radio and TV University, Lu Xuzhi |
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Effective date of registration: 20190911 Address after: 244000 No. two, 4277 West Lake Road, Tongling Development Zone, Anhui, China Patentee after: Tongling four Tong Environmental Technology Co., Ltd. Address before: In Dazu County, Chongqing city 402366 beam town streets 1 groups Patentee before: Qin Qin |