CN101270401B - Pure oxygen non-blast furnace ironmaking end reduction furnace oxygen wind gap apparatus - Google Patents
Pure oxygen non-blast furnace ironmaking end reduction furnace oxygen wind gap apparatus Download PDFInfo
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- CN101270401B CN101270401B CN2008101064166A CN200810106416A CN101270401B CN 101270401 B CN101270401 B CN 101270401B CN 2008101064166 A CN2008101064166 A CN 2008101064166A CN 200810106416 A CN200810106416 A CN 200810106416A CN 101270401 B CN101270401 B CN 101270401B
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- tuyere
- oxygen
- small sleeve
- tuyere small
- sleeve
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Abstract
The invention discloses an oxygen tuyere device of final reduction furnace of pure-oxygen non-blast-furnace iron making comprising a large sleeve of tuyere, a middle sleeve of tuyere and a small sleeve of tuyere. The large sleeve, the middle sleeve and the small sleeve of tuyere are connected successively in reducing diameter. An intubation tube of oxygen-coal lance is positioned in the tuyere device. The front end of the intubation tube of oxygen-coal lance is connected with the tail end of the small sleeve of tuyere, the tail end of the small sleeve of tuyere is equipped with a circular groove, a connecting tube is embedded and welded in the groove, and the front end of the intubation tube of oxygen-coal lance is connected with the thread of the connecting tube and fixedly welded. The oxygen tuyere device can lengthen the service life of the oxygen tuyere and simultaneously cause the final reduction furnace to operate safely, stably and smoothly.
Description
Technical field
The present invention relates to the device that place, a kind of non-blast furnace ironmaking end reduction furnace air port sprays into the mixture of oxygen and coal dust, particularly a kind of pure oxygen non-blast furnace ironmaking end reduction furnace oxygen wind gap apparatus.
Background technology
Because pure oxygen non-blast furnace ironmaking technology, need spray into the mixture of oxygen and coal dust at place, end reducing furnace air port, blast hot blast during with blast-furnace smelting from the air port similar.In air-supply apparatus of blast furnace, in conjunction with finishing, in actual production, air-supply arrangement has certain leakage by sphere in the sealing of belly pipe and tuyere small sleeve, as long as in time safeguard in the blast furnace production operation, generally to producing and not influence of safety.
And pure oxygen non-blast furnace ironmaking technology difference, what blast from end reducing furnace is oxygen and coal dust, as reveals, and safety problem can take place.Therefore require the oxygen tuyere device not allow to reveal.Simultaneously, oxygen tuyere small sleeve front end (part in the end reducing furnace stove) is in molten slag, and may have in the encirclement that iron drips, and is dropped on the tuyere small sleeve if any the iron of liquid state, and tuyere small sleeve will soon burn.In addition, spray into coal oxygen mixture by the oxygen air port, the tuyere small sleeve inner channel is not as taking measures, and ground away by coal oxygen mixture very soon, shortens oxygen tuyere small sleeve work-ing life, causes the frequent damping down of end reducing furnace to change tuyere small sleeve.
Summary of the invention
The technical issues that need to address of the present invention just are to overcome the defective of prior art, and a kind of pure oxygen non-blast furnace ironmaking end reduction furnace oxygen wind gap apparatus is provided, and it can make end reducing furnace safety, stable, direct motion when prolonging the oxygen air port life-span.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of pure oxygen non-blast furnace ironmaking end reduction furnace oxygen wind gap apparatus of the present invention, comprise cover and tuyere small sleeve in tuyere big sleeve, the air port, cover is connected with tuyere small sleeve undergauge successively in described tuyere big sleeve, the air port, an oxygen coal spray gun intubate is installed in the tuyere device, described oxygen coal spray gun intubate front end is connected with the tuyere small sleeve tail end, described tuyere small sleeve tail end is provided with circular groove, inlay in the described groove and be welded with the connection short tube, described oxygen coal spray gun intubate front end be connected short tube and be threaded and weld fixing.
The tuyere small sleeve inboard is the tuyere small sleeve passage, and described tuyere small sleeve passage is equipped with the wear-resistant ceramic bushing pipe.
Described tuyere small sleeve is fixed by 3 cover push rods.
Be equipped with ceramic-lined in the described oxygen coal spray gun intubate.
The present invention is tight for oxygen coal spray gun intubate and tuyere small sleeve are cooperated, and adopts following scheme: the tail end of tuyere small sleeve (fine copper) adds and leaves circular groove man-hour, connects short tube (stainless steel) then and is embedded in the groove and welds.Tuyere small sleeve is tight with the connection that is connected short tube like this.The front end of oxygen coal spray gun intubate (stainless steel) is processed into outside screw and is connected short tube (being processed into internal thread) and cooperates, occur revealing for preventing to be threaded, oxygen coal spray gun intubate and is connected that short tube is stubborn and gets well after, weld again.So just guarantee that tuyere small sleeve and oxygen coal spray gun intubate are in conjunction with tight.
In view of the working condition of tuyere small sleeve, at the passage place of tuyere small sleeve the wear-resistant ceramic bushing pipe is housed, significantly reduced of the wearing and tearing of oxygen coal mixtures like this to tuyere small sleeve, reduced the probability that tuyere small sleeve is ground away by the oxygen coal mixtures, prolonged the life-span of tuyere small sleeve.The comprehensive above several measures of the present invention can prolong the life-span of tuyere small sleeve effectively.
Cover combine by the conical surface and seals in tuyere small sleeve of the present invention and the air port, and tuyere small sleeve overlaps push rods by 3 and fixes simultaneously.That overlaps in assurance tuyere small sleeve and the air port like this is fixing.
The beneficial effect of technical scheme provided by the invention is:
1, can prevent the leakage of block coal mixtures effectively, guarantee the safety of producing.
2, can reduce the oxygen coal mixtures prolongs tuyere small sleeve to the wearing and tearing of tuyere small sleeve life-span.The damping down that reduces end reducing furnace is changed the number of times of tuyere small sleeve.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of pure oxygen non-blast furnace ironmaking end reduction furnace oxygen wind gap apparatus of the present invention, comprise tuyere big sleeve 1, cover 3 and tuyere small sleeve 4 in the air port, described tuyere big sleeve, cover is connected with tuyere small sleeve undergauge successively in the air port, tuyere big sleeve is set with big cover flange 2 outward, an oxygen coal spray gun intubate 7 is installed in the tuyere device, described oxygen coal spray gun intubate front end is connected with the tuyere small sleeve tail end, described tuyere small sleeve tail end is provided with circular groove, inlay in the described groove to be welded with and connect short tube 8, described oxygen coal spray gun intubate front end be connected short tube and be threaded and weld fixing.
The tuyere small sleeve inboard is the tuyere small sleeve passage, and described tuyere small sleeve passage is equipped with wear-resistant ceramic bushing pipe 9.
Cover combine by the conical surface and seals in described tuyere small sleeve and the air port, and tuyere small sleeve is fixed by 3 cover push rods 6.
Be equipped with ceramic-lined 5 in the described oxygen coal spray gun intubate.
The present invention is tight for oxygen coal spray gun intubate and tuyere small sleeve are cooperated, and adopts following scheme: the tail end of tuyere small sleeve (fine copper) adds and leaves circular groove man-hour, connects short tube (stainless steel) then and is embedded in the groove and welds.Tuyere small sleeve is tight with the connection that is connected short tube like this.The front end of oxygen coal spray gun intubate (stainless steel) is processed into outside screw and is connected short tube (being processed into internal thread) and cooperates, occur revealing for preventing to be threaded, oxygen coal spray gun intubate and is connected that short tube is stubborn and gets well after, weld again.So just guarantee that tuyere small sleeve and oxygen coal spray gun intubate are in conjunction with tight.
In view of the working condition of tuyere small sleeve, at the passage place of tuyere small sleeve the wear-resistant ceramic bushing pipe is housed, significantly reduced of the wearing and tearing of oxygen coal mixtures like this to tuyere small sleeve, reduced the probability that tuyere small sleeve is ground away by the oxygen coal mixtures, prolonged the life-span of tuyere small sleeve.The while tuyere small sleeve passes to high pressure water and cools off, and the comprehensive above several measures of the present invention can prolong the life-span of tuyere small sleeve effectively.
Cover combine by the conical surface and seals in tuyere small sleeve of the present invention and the air port, and tuyere small sleeve overlaps push rods by 3 and fixes simultaneously.That overlaps in assurance tuyere small sleeve and the air port like this is fixing.
The present invention can prevent the leakage of block coal mixtures effectively, guarantees the safety of producing.Can reduce simultaneously the oxygen coal mixtures prolongs tuyere small sleeve to the wearing and tearing of tuyere small sleeve life-span.The damping down that reduces end reducing furnace is changed the number of times of tuyere small sleeve.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. pure oxygen non-blast furnace ironmaking end reduction furnace oxygen wind gap apparatus, comprise cover and tuyere small sleeve in tuyere big sleeve, the air port, cover is connected with tuyere small sleeve undergauge successively in described tuyere big sleeve, the air port, an oxygen coal spray gun intubate is installed in the tuyere device, described oxygen coal spray gun intubate front end is connected with the tuyere small sleeve tail end, it is characterized in that: described tuyere small sleeve tail end is provided with circular groove, inlay in the described groove and be welded with the connection short tube, described oxygen coal spray gun intubate front end be connected short tube and be threaded and weld fixing;
The tuyere small sleeve inboard is the tuyere small sleeve passage, and described tuyere small sleeve passage is equipped with the wear-resistant ceramic bushing pipe;
Tuyere small sleeve is fixed by 3 cover push rods.
2. pure oxygen non-blast furnace ironmaking end reduction furnace oxygen wind gap apparatus as claimed in claim 1 is characterized in that: be equipped with ceramic-lined in the described oxygen coal spray gun intubate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101064166A CN101270401B (en) | 2008-05-13 | 2008-05-13 | Pure oxygen non-blast furnace ironmaking end reduction furnace oxygen wind gap apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101064166A CN101270401B (en) | 2008-05-13 | 2008-05-13 | Pure oxygen non-blast furnace ironmaking end reduction furnace oxygen wind gap apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101270401A CN101270401A (en) | 2008-09-24 |
| CN101270401B true CN101270401B (en) | 2011-02-16 |
Family
ID=40004626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101064166A Expired - Fee Related CN101270401B (en) | 2008-05-13 | 2008-05-13 | Pure oxygen non-blast furnace ironmaking end reduction furnace oxygen wind gap apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN101270401B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962697B (en) * | 2010-11-01 | 2012-02-08 | 中冶京诚工程技术有限公司 | Oxygen coal spray gun nozzle combining device |
| CN102191346B (en) * | 2011-06-02 | 2013-02-20 | 中冶京诚工程技术有限公司 | Combined type tuyere small sleeve |
| CN103088173A (en) * | 2011-11-01 | 2013-05-08 | 张昭贵 | Blast furnace coal injection device, and mounting and operating methods thereof |
| CN103924017B (en) * | 2014-04-18 | 2015-10-21 | 攀钢集团成都钢钒有限公司 | A kind of method changing the large cover of blast-furnace tuyere |
| CN104561415A (en) * | 2015-01-29 | 2015-04-29 | 江苏永钢集团有限公司 | Hot air supply device for blast furnace |
| CN110628975A (en) * | 2019-09-11 | 2019-12-31 | 大冶特殊钢有限公司 | Tuyere ceramic sleeve for blast furnace ironmaking |
| CN113151625A (en) * | 2021-04-29 | 2021-07-23 | 山西助潞腾飞科技服务有限公司 | Blast furnace coal powder blowing device |
-
2008
- 2008-05-13 CN CN2008101064166A patent/CN101270401B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101270401A (en) | 2008-09-24 |
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Granted publication date: 20110216 Termination date: 20130513 |