CN202595182U - Layout structure of bottom blowing air bricks of small-scale top and bottom combined blown converter - Google Patents
Layout structure of bottom blowing air bricks of small-scale top and bottom combined blown converter Download PDFInfo
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- CN202595182U CN202595182U CN 201220247413 CN201220247413U CN202595182U CN 202595182 U CN202595182 U CN 202595182U CN 201220247413 CN201220247413 CN 201220247413 CN 201220247413 U CN201220247413 U CN 201220247413U CN 202595182 U CN202595182 U CN 202595182U
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Abstract
The utility model discloses a layout structure of bottom blowing air bricks of a small-scale top and bottom combined blown converter and belongs to the technical field of converter steelmaking. The structure mainly solves the problem of layout patterns of bottom blowing air bricks of the small-scale top and bottom combined blown converter. The structure comprises three air bricks, wherein the three air bricks are distributed on a converter bottom and are arranged on a concentric circumference of 0.45D (D is the diameter of a molten pool.), one air brick is arranged on a trunnion connection line, the other two air bricks are arranged at a position of an opposite side, which forms an included angel alpha with the converter bottom trunnion connection line center, and the three air bricks are distributed on the concentric circumference unevenly. Compared with a traditional even layout, integral three-dimensional big-circulating stirring can be achieved, evenly-mixed time of molten steel is shortened effectively, and the metallurgy effect is good.
Description
Technical field:
The utility model relates to the converter steeling technology field, is a kind of alignment placement structure of small-sized bottom-blown air brick of top and bottom repeatedly blown converter specifically.
Background technology:
Top and bottom combined blown converter technology is meant in the production process, supplies with oxygen from the top of converter molten pool, supplies with rare gas element or nitrogen composite blow technology from the converter bottom simultaneously; The top and bottom complex blowing Technology not only makes molten steel composition and more uniform temperature, blowing more steady, and the residual manganese content of molten steel terminal point improves, and duration of blast shortens; FeO content all has reduction in oxygen depletion reduction and the slag, and the yield of metal is improved, owing to stir fully; It is rapid to change slag, obtains dephosphorization effect preferably.And the layout structure of bottom-blown air brick directly influences the performance of bottom blowing effect, and three traditional gas permeable brick layout structures generally are employed on the concentric(al) circles Distribution Pattern (see figure 1) symmetrically, facts have proved that this kind distribution can not make the bottom blowing effect give full play to; Stir in order further to strengthen the molten bath; Accelerate slagging speed, improve the lime utilization ratio, improved the converter dephosphorization desulfuration efficiency; How to change the even layout of this gas permeable brick, become the problem of present research.
Summary of the invention:
The utility model provides a kind of small-sized bottom-blown air brick of top and bottom repeatedly blown converter layout structure, can effectively strengthen the molten bath mixing effect, accelerates slagging speed, improves the lime utilization ratio, improves the converter dephosphorization desulfuration efficiency.
The utility model is realized through following technical scheme: a kind of small-sized bottom-blown air brick of top and bottom repeatedly blown converter layout structure; Comprise three blocks of gas permeable bricks that are distributed in furnace bottom; It is characterized in that: gas permeable brick is arranged on the concentric circumference that diameter is 0.45D, and D is the molten bath diameter; Wherein a gas permeable brick is at gudgeon line and 0.45D circumference intersection point place; Other two blocks of gas permeable bricks are arranged on two diameter line and 0.45D circumference intersection point places that are the α angle respectively with the gudgeon line at gudgeon line opposite side.
Above-mentioned angle [alpha]=37 °.
The utility model has been optimized the layout of existing small-sized top and bottom combined blown converter furnace bottom gas permeable brick; Adopt three blocks of gas permeable bricks non-homogeneous layout structure on concentric circumference; This kind layout structure can form the three-dimension integrally systemic circulation and stir, and has strengthened the mixing effect in molten bath, can effectively shorten all and do time; Improve the utilization coefficient of oxygen, shortened oxygen supply time; Cooperate rational bottom blown gas pressure and flow again, can accelerate TFe content in auxiliary material slagging speed and the slag, reduce auxiliary material and iron and steel stock consumption and consume; And when operations such as the sampling of falling the stove, thermometric, wait, have at least a gas supply element to expose the stove liquid level, can keep the molten bath steady.Many index shows that this layout has than the better economic and technical norms of conventional in layout.
Description of drawings:
Fig. 1 is the gas permeable brick distribution schematic diagram of conventional art;
Fig. 2 is the utility model bottom construction figure;
Fig. 3 is the gas permeable brick layout structure synoptic diagram of the utility model;
Mark expression as follows among the figure: 1. furnace bottom flange; 2. furnace bottom rim of the mouth brick; 3. bottom brick; 4. gas permeable brick; 5.0.45D circumference; 6. gudgeon line.
Embodiment:
In order to be illustrated more clearly in the technical scheme of the utility model, will combine accompanying drawing that embodiment is described below.
Fig. 2 is the utility model gas permeable brick layout structure synoptic diagram.Fig. 3 is the utility model bottom construction figure, comprises three blocks of gas permeable bricks 4 that are distributed in furnace bottom, and it is on the 0.45D circumference 5 that gas permeable brick 4 is arranged on diameter, and D is the molten bath diameter; Wherein gas permeable brick 4 in north and south gudgeon line 6 north sides and 0.45D circumference 5 intersection point places; Other two blocks of gas permeable bricks 4 are gudgeon line 6 southern sides in north and south, are arranged on two diameter line and 0.45D circumference 5 intersection point places that are α (37 °) angle respectively with the gudgeon line.Three blocks of gas permeable bricks are non-homogeneous layout structure on concentric circumference, compare with the even layout structure of tradition, have strengthened the mixing effect in molten bath, can effectively shorten all and do time, and have improved the utilization coefficient of oxygen, have shortened oxygen supply time; Cooperate rational bottom blown gas pressure and flow again, can accelerate auxiliary material slagging speed and reduce TFe content in the slag, reduce auxiliary material and iron and steel stock consumption and consume.
When α=37 °, except that every block of gas permeable brick can form circulation stirs in the part, because of the gudgeon both sides are eccentric layout structure, three blocks of gas permeable bricks can form whole three-dimensional circulation simultaneously and stir, and can shorten the melt tank mixing time and strengthen mixing effect.And when operations such as the sampling of falling the stove, thermometric, wait, have at least a gas supply element to expose the stove liquid level, can keep the molten bath steady, therefore, this structure is the optimum structure of small-sized bottom-blown air brick of top and bottom repeatedly blown converter layout.
Claims (2)
1. a small-sized bottom-blown air brick of top and bottom repeatedly blown converter layout structure comprises three blocks of gas permeable bricks that are distributed in furnace bottom, it is characterized in that: it is on the 0.45D circumference (5) that gas permeable brick (4) is arranged on diameter, and D is the molten bath diameter; Wherein a gas permeable brick (4) is at gudgeon line (6) and 0.45D circumference (5) intersection point place; Other two blocks of gas permeable bricks (4) are arranged on two diameter line and 0.45D circumference (5) intersection point places that are the α angle respectively with gudgeon line (6) at gudgeon line (6) opposite side.
2. small-sized bottom-blown air brick of top and bottom repeatedly blown converter layout structure according to claim 1 is characterized in that: described angle [alpha]=37 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220247413 CN202595182U (en) | 2012-05-29 | 2012-05-29 | Layout structure of bottom blowing air bricks of small-scale top and bottom combined blown converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220247413 CN202595182U (en) | 2012-05-29 | 2012-05-29 | Layout structure of bottom blowing air bricks of small-scale top and bottom combined blown converter |
Publications (1)
| Publication Number | Publication Date |
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| CN202595182U true CN202595182U (en) | 2012-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220247413 Expired - Fee Related CN202595182U (en) | 2012-05-29 | 2012-05-29 | Layout structure of bottom blowing air bricks of small-scale top and bottom combined blown converter |
Country Status (1)
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| CN (1) | CN202595182U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110343801A (en) * | 2019-08-14 | 2019-10-18 | 东北大学 | A kind of the bottom rifle method for arranging and bottom blowing method of the big converter molten pool stirring of top and bottom complex blowing |
| CN110523966A (en) * | 2019-09-25 | 2019-12-03 | 张家港广大特材股份有限公司 | A kind of double porous cores of ladle |
-
2012
- 2012-05-29 CN CN 201220247413 patent/CN202595182U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110343801A (en) * | 2019-08-14 | 2019-10-18 | 东北大学 | A kind of the bottom rifle method for arranging and bottom blowing method of the big converter molten pool stirring of top and bottom complex blowing |
| CN110523966A (en) * | 2019-09-25 | 2019-12-03 | 张家港广大特材股份有限公司 | A kind of double porous cores of ladle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20121212 Termination date: 20160529 |