CN203754751U - Oxygen bottom blown converter for steelmaking - Google Patents
Oxygen bottom blown converter for steelmaking Download PDFInfo
- Publication number
- CN203754751U CN203754751U CN201420183692.3U CN201420183692U CN203754751U CN 203754751 U CN203754751 U CN 203754751U CN 201420183692 U CN201420183692 U CN 201420183692U CN 203754751 U CN203754751 U CN 203754751U
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- oxygen
- furnace body
- double
- revolving furnace
- converter
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Abstract
The utility model discloses an oxygen bottom blown converter for steelmaking. The oxygen bottom blown converter comprises a converter body, an inner furnace arranged on the converter body, a housing arranged on the converter body, a furnace bottom plate arranged on the converter body, a double-layer oxygen lance arranged on the converter body and an oxygen distribution ring tube arranged on the converter body, wherein the furnace bottom plate is installed at the bottom of the converter body, a furnace bottom plug is arranged on the furnace bottom plate, the double-layer oxygen lance is mounted in the furnace bottom plug, and penetrates through the furnace bottom plate, the double-layer oxygen lance is connected with a fuel pipe, an installation buckle for fixedly installing the converter body is arranged on the converter body, a hollow trunnion is arranged on the installation buckle, a bearing is arranged on the hollow trunnion, the hollow trunnion is internally provided with an oxygen pipe and the oxygen pipe is connected with the double-layer oxygen lance. The oxygen bottom blown converter disclosed by the utility model has the advantages that 1. the structure is simple, the usage and installation are convenient, the operation is simple, the cost is low and the range of application is wide; 2. the blowing process is steady, splash and dust are less, the recovery rate of metal is high, the smelting speed is fast and the oxygen bottom blown converter has safe and reliable effects.
Description
Technical field
The utility model relates to a kind of steel making oxygen gas bottom-blown converter.
Background technology
Maximilian Usiminas after " liquefaction of air company " cooperation manufactures experimently into " OBM method " bottomblown oxygen converter quiet basic oxygen with Canada from former West Germany of in December, 1967; this technology has successively been introduced in countries in the world; and according to the composition of national molten iron, protective medium, source; end-blown converter steel-making is produced and improved and develop, form multiple smelting process.Except " OBM " method is done heat-eliminating medium with gaseous hydrocarbon, France developed again with oil fuel do refrigerant " LWS' ' method bottomblown oxygen converter quiet basic oxygen, the U.S. is developed into again " Q-BOP " method after within 1971, introducing " OBM " law technology.This method except with gaseous hydrocarbon as heat-eliminating medium, also to the lime powder of jetting in stove.In addition argon oxygen decarburization bottom-blown converter (AOD method) development that is applicable to smelting stainless steel is very fast, has 50% stainless steel employing AOD method bottomblown oxygen converter quiet basic oxygen production at present in Europe.China was since 1973, on small vessel, test respectively, accumulated certain experiences, and on this basis designed, designed 25t bottomblown oxygen converter quiet basic oxygen, but at present domestic bottomblown oxygen converter quiet basic oxygen is its structure is comparatively complicated, recovery rate of iron is low, smelting speed does not reach people's requirement, and cost is higher, and this all can bring loss to user.
Utility model content
(1) technical problem that will solve
The technical problems to be solved in the utility model is to provide a kind of steel making oxygen gas bottom-blown converter, compare with existing steel making oxygen gas bottom-blown converter, difference be (1) converting process steadily, splash and flue dust few (3121 that dustiness is top blast～), thereby recovery rate of iron is high, can reach 9l%～93%, and top blown converter is about 90%; (2) smelting speed is fast, and duration of blast is than top-blown method short (12～14rain) thermo-efficiency high (steel scrap that can many uses 20% left and right than top-blown method) under the same conditions; (3) because oxygen is blown into from furnace bottom, therefore factory building is lower than top blast, thereby construction investment is few, approximately than top blast, saves 10% one 20%.As utilizing open hearth shop reconstruction, output investment ratio top blown converter is saved half; (4) steel grade and quality that the steel grade that bottom-blown converter is produced and quality and top blown converter or open hearth are produced are basic identical, and bottomblown oxygen converter quiet basic oxygen furnace bottom is convenient to rapid-assembling/disassembling, so that furnace outage time reduces to minimum, thereby reduce cost.
(2) technical scheme
For addressing the above problem, the utility model adopts following technical scheme:
A kind of steel making oxygen gas bottom-blown converter, comprise revolving furnace body, and be arranged on the interior stove on revolving furnace body, and be arranged on the shell on revolving furnace body, and be arranged on the drop-bottom on revolving furnace body, and be arranged on the double-deck oxygen rifle on revolving furnace body, and the oxygen being arranged on revolving furnace body distributes endless tube, described drop-bottom is arranged on revolving furnace body bottom, described drop-bottom is provided with furnace bottom plug, described double-deck oxygen rifle is arranged in furnace bottom plug, and run through drop-bottom, described double-deck oxygen rifle is connected with fuelpipe, described revolving furnace body is provided with for fixedly mounting the installing tache of revolving furnace body, described installing tache is provided with hollow gudgeon, described hollow gudgeon is provided with bearing, in described hollow gudgeon, be provided with oxygen hose, described oxygen hose is connected with double-deck oxygen rifle, described oxygen distributes endless tube to be arranged on oxygen hose, described oxygen hose runs through hollow gudgeon, and on oxygen hose, be provided with bulb tube joint.
As preferred technical scheme, described fuelpipe and oxygen hose and double-deck oxygen rifle junction are provided with divider, and described divider is arranged on revolving furnace body inner bottom part, and described divider distributes endless tube to be connected with oxygen hose by oxygen.
As preferred technical scheme, described double-deck oxygen rifle is comprised of inner sleeve and outer tube, and described inner sleeve is arranged in outer tube.
As preferred technical scheme, between described interior stove and shell, be provided with one layer of heat preservation layer, described interior stove adopts high temperature resistant refractory material to make.
(3) beneficial effect
The utility model is compared to prior art, has following beneficial effect: 1. and simple in structure, use, easy for installation, simple to operate, cost is low, applied widely; Converting process steadily, splash and flue dust few, recovery rate of iron is high, smelting speed is fast, long service life has safe and reliable effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of steel making oxygen gas bottom-blown converter of the present utility model;
Fig. 2 is the pipeline layout diagram of a kind of steel making oxygen gas bottom-blown converter of the present utility model.
Fig. 3 is the double-deck oxygen rifle structural representation of a kind of steel making oxygen gas bottom-blown converter of the present utility model;
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
A kind of steel making oxygen gas bottom-blown converter of the present utility model, comprise revolving furnace body 1, and be arranged on the interior stove 2 on revolving furnace body 1, and be arranged on the shell 3 on revolving furnace body 1, and be arranged on the drop-bottom 4 on revolving furnace body 1, and be arranged on the double-deck oxygen rifle 5 on revolving furnace body 1, and the oxygen being arranged on revolving furnace body 1 distributes endless tube 6, described drop-bottom 4 is arranged on revolving furnace body 1 bottom, described drop-bottom 4 is provided with furnace bottom plug 7, described double-deck oxygen rifle 5 is arranged in furnace bottom plug 7, and run through drop-bottom 4, described double-deck oxygen rifle 5 is connected with fuelpipe 8, described revolving furnace body 1 is provided with for fixedly mounting the installing tache 9 of revolving furnace body 1, described installing tache 9 is provided with hollow gudgeon 10, described hollow gudgeon 10 is provided with bearing 11, in described hollow gudgeon 10, be provided with oxygen hose 12, described oxygen hose 12 is connected with double-deck oxygen rifle 5, described oxygen distributes endless tube 6 to be arranged on oxygen hose 12, described oxygen hose 12 runs through hollow gudgeon 10, and on oxygen hose 12, be provided with bulb tube joint 13.
Described fuelpipe 8 and oxygen hose 12 are provided with divider 14 with double-deck oxygen rifle 5 junctions, and described divider 14 is arranged on revolving furnace body 1 inner bottom part, and described divider 14 distributes endless tube 6 to be connected with oxygen hose 12 by oxygen.
Described double-deck oxygen rifle 5 is comprised of inner sleeve 15 and outer tube 16, and described inner sleeve 15 is arranged in outer tube 16.
Between described interior stove 2 and shell 3, be provided with one layer of heat preservation layer 17, described interior stove 2 adopts high temperature resistant refractory material to make.
Bottomblown oxygen converter quiet basic oxygen furnace bottom is convenient to rapid-assembling/disassembling, so that furnace outage time reduces to minimum.The size of nozzle, number and layout depend on converter capacity size.Totally six, oxygen rifle, guarantee should to reduce oxygen rifle number under the prerequisite that blowing is carried out smoothly as far as possible, to alleviate maintenance load.Oxygen rifle number is generally no less than 5, when the few and diameter of oxygen rifle number is large, can affect slag iron balance in stove, and the splash loss of iron is large, and furnace bottom consumption is fast, and flue dust increases.During use, preferably adopt 6 oxygen rifles, wherein one block after, by other 5 rifles, guarantee blowing.Oxygen rifle number is many, will inevitably increase oil consumption and maintenance, and oxygen rifle spacing generally should be greater than 600mm, and the distance of oxygen rifle and furnace lining is greater than 600mm, otherwise the oxygen flow of going out can wash away furnace lining, causes Eroded.In addition, stove is (as tapping, when sampling) when dump position, can not make oxygen rifle mouth under slag blanket or molten steel.Oxygen rifle internal diameter size can be according to desired flow and given oxygen supply pressure by calculating mouth pressure and flow velocity is selected.Internal diameter size reaches velocity of sound in the time of should guaranteeing oxygen flow ejection.The more typical scheme of furnace bottom pipeline configuration has three kinds: i.e. straight-line; Semi-circular; Concentric pitch circle formula.Straight-line can be divided into again two kinds of single and many rows.
Bottomblown oxygen converter quiet basic oxygen is compared and is had following advantages with top-blown oxygen converter:
(1) converting process steadily, splash and flue dust few (3121 that dustiness is top blast～), thereby recovery rate of iron is high, can reach 9l%～93%, and top blown converter is about 90%.
(2) smelting speed is fast, and duration of blast is than top-blown method short (12～14rain) thermo-efficiency high (steel scrap that can many uses 20% left and right than top-blown method) under the same conditions.
(3) because oxygen is blown into from furnace bottom, therefore factory building is lower than top blast, thereby construction investment is few, approximately than top blast, saves 10% one 20%.As utilizing open hearth shop reconstruction, output investment ratio top blown converter is saved half.
(4) steel grade and quality that the steel grade that bottom-blown converter is produced and quality and top blown converter or open hearth are produced are basic identical.
The beneficial effects of the utility model have: 1. and simple in structure, use, easy for installation, simple to operate, cost is low, applied widely; Converting process steadily, splash and flue dust few, recovery rate of iron is high, smelting speed is fast, long service life has safe and reliable effect.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. a steel making oxygen gas bottom-blown converter, it is characterized in that: comprise revolving furnace body, and be arranged on the interior stove on revolving furnace body, and be arranged on the shell on revolving furnace body, and be arranged on the drop-bottom on revolving furnace body, and be arranged on the double-deck oxygen rifle on revolving furnace body, and the oxygen being arranged on revolving furnace body distributes endless tube, described drop-bottom is arranged on revolving furnace body bottom, described drop-bottom is provided with furnace bottom plug, described double-deck oxygen rifle is arranged in furnace bottom plug, and run through drop-bottom, described double-deck oxygen rifle is connected with fuelpipe, described revolving furnace body is provided with for fixedly mounting the installing tache of revolving furnace body, described installing tache is provided with hollow gudgeon, described hollow gudgeon is provided with bearing, in described hollow gudgeon, be provided with oxygen hose, described oxygen hose is connected with double-deck oxygen rifle, described oxygen distributes endless tube to be arranged on oxygen hose, described oxygen hose runs through hollow gudgeon, and on oxygen hose, be provided with bulb tube joint.
2. steel making oxygen gas bottom-blown converter according to claim 1, it is characterized in that: described fuelpipe and oxygen hose and double-deck oxygen rifle junction are provided with divider, described divider is arranged on revolving furnace body inner bottom part, and described divider distributes endless tube to be connected with oxygen hose by oxygen.
3. steel making oxygen gas bottom-blown converter according to claim 1, is characterized in that: described double-deck oxygen rifle is comprised of inner sleeve and outer tube, and described inner sleeve is arranged in outer tube.
4. steel making oxygen gas bottom-blown converter according to claim 1, is characterized in that: between described interior stove and shell, be provided with one layer of heat preservation layer, described interior stove adopts high temperature resistant refractory material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420183692.3U CN203754751U (en) | 2014-04-15 | 2014-04-15 | Oxygen bottom blown converter for steelmaking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420183692.3U CN203754751U (en) | 2014-04-15 | 2014-04-15 | Oxygen bottom blown converter for steelmaking |
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| Publication Number | Publication Date |
|---|---|
| CN203754751U true CN203754751U (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420183692.3U Expired - Fee Related CN203754751U (en) | 2014-04-15 | 2014-04-15 | Oxygen bottom blown converter for steelmaking |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111394537A (en) * | 2020-04-16 | 2020-07-10 | 河北敬业钢构科技股份有限公司 | Top-bottom combined blowing steel-smelting converter |
| CN115807146A (en) * | 2023-01-20 | 2023-03-17 | 北京科技大学 | Converter bottom blowing system with multi-medium shared bottom blowing gun and use method thereof |
-
2014
- 2014-04-15 CN CN201420183692.3U patent/CN203754751U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111394537A (en) * | 2020-04-16 | 2020-07-10 | 河北敬业钢构科技股份有限公司 | Top-bottom combined blowing steel-smelting converter |
| CN111394537B (en) * | 2020-04-16 | 2021-12-24 | 河北敬业钢构科技股份有限公司 | Top-bottom combined blowing steel-smelting converter |
| CN115807146A (en) * | 2023-01-20 | 2023-03-17 | 北京科技大学 | Converter bottom blowing system with multi-medium shared bottom blowing gun and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151013 Address after: Qujing City, Yunnan province 655000 Tongquan Malone County Street (Tianyuan Industrial Park) Patentee after: Qujing Yunnan steel (Group) Co., Ltd. Address before: 315700, No. 25, Jing Nan Road, Dan County, Xiangshan, Zhejiang, Ningbo Patentee before: Yuan Chao |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20160415 |