CN102642020A - Permeable brick for ladle - Google Patents
Permeable brick for ladle Download PDFInfo
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- CN102642020A CN102642020A CN2012101116928A CN201210111692A CN102642020A CN 102642020 A CN102642020 A CN 102642020A CN 2012101116928 A CN2012101116928 A CN 2012101116928A CN 201210111692 A CN201210111692 A CN 201210111692A CN 102642020 A CN102642020 A CN 102642020A
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- brick
- slit
- ladle
- core
- air
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- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a permeable brick for a ladle. The permeable brick comprises a pocket brick arranged on the side of a steel ladle, wherein one end of the pocket brick is provided with a gas chamber, the pocket brick is internally provided with tapered cavities communicated with the gas chamber, the tapered cavities are internally provided with brick cores, the brick cores are provided with slits capable of making gas pass, and the slits are communicated with the gas chamber; and two tapered cavities are arranged, the two tapered cavities are both internally provided with the brick cores, and the brick cores and the pocket brick are sintered integrally. The permeable brick for the ladle has the advantages of high permeability, long service life, and better blow-assisted slag remove effect.
Description
Technical field
The present invention relates to a kind of air brick that is installed on the ladle.
Background technology
Molten iron pretreatment desulfurizing technology is used widely as an important metallurgical technology flow process of low-sulfur or the smelting of super-low sulfur variety steel.Behind desulfurizing iron; Need in time remove desulfurization slag; There are low, the problems such as residual slag is many in big, the molten iron of iron loss when skimming of the efficient of skimming in when operation owing to skim; After winding-up formed thin slag system, these problems were more remarkable especially, and the existence of these problems has a strong impact on the allomeric function and the effect of hot metal pretreatment technology.
To these problems, the metallurgist proposes to be blown into gases at high pressure in ladle bottom or side both at home and abroad, and then forms exposed surface at liquid level, plays deslagging and gathers the slag effect, the auxiliary desulfurization slag that removes.When at present ladle is blown auxiliary skimming, in the ladle side or the bottom surface air brick is installed, gas is blown into the stirring molten iron through the slit of air brick, can form exposed surface at liquid level, reaches deslagging and gathers the slag effect.In the industrial practice process, the auxiliary technology of skimming of use blowing in the hot metal pretreatment technology in the raising effect of skimming, is improved the aspects such as technical-economic index of hot metal pretreatment technology and has been got significant effect.
At present, ladle is blown and is assisted slag skimming process, is generally the installation slot-type ventilating brick in the ladle side; Air brick comprises brick cup; Be provided with the gas secret room in brick cup one side, in brick cup, be provided with the pyramid type cavity that is communicated with the gas secret room, in this pyramid type cavity, the brick core is set; The brick core is provided with the slit that supplied gas is passed through, and this slit is communicated with the gas secret room; Because this kind air brick adopts a brick core, there is following problem in this air brick in real work:
(1) this kind air brick, it is less relatively to form exposed surface at the ladle liquid level, can not realize efficient auxiliary skimming, and especially the elimination dead angle of skimming is difficult to;
(2) in order to obtain big exposed surface,, adopt the mode that increases supply gas pressure usually so that take off slag operation; But this mode is given gas circuit security deleterious impact on the one hand, and supply gas pressure may cause the molten iron splash greatly on the other hand, has potential safety hazard;
(3) traditional ladle air brick as easy as rolling off a log obstruction in application process, service life is short, and through-blowing rate is low.
To problems such as little, the as easy as rolling off a log obstruction of the single brick core air brick bare area in the commercial Application process of tradition, service life are short; The technical staff of Ma Gang has carried out a large amount of research work, and from dwindling the air brick slit sizes, raising aspects such as air brick installation site and be optimized improvement; Though these corrective measures are preventing to obtain certain effect aspect air brick obstruction, the raising through-blowing rate; But reduced the air brick air permeable effect, made that the exposed surface of the top of the slag is littler, gathered the slag effect of skimming and reduce; Though air brick blows logically when serious, gets the effect of skimming less than auxiliary.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of foundry ladle air brick that has high air penetrability and service life and have the auxiliary effect of skimming of preferable air blowing is provided.
To achieve these goals, the technical scheme of the present invention's employing is:
Said foundry ladle air brick; Comprise the brick cup of being located at the ladle side; End at brick cup is provided with the gas secret room, in brick cup, is provided with the pyramid type cavity that is communicated with the gas secret room, in this pyramid type cavity, is provided with the brick core; On said brick core, be provided with the slit that supplied gas is passed through, this slit is communicated with the gas secret room; Said pyramid type cavity is two, and in two pyramid type cavitys, is equipped with the brick core, and said brick core and said brick cup are sintered into one.
Said brick core is that symmetrical centre is symmetrical set with the brick cup center, and brick core one end extend into ladle inside, and the brick core exceeds 20～30mm than the anti-face of ladle.
On said brick core, be equipped with the slit that is communicated with gas secret room and ladle inside, the width of said slit is 0.15～0.20mm.
Said slit is arranged in parallel.
On two brick cores, be equipped with five road slits; Wherein one slit is located at the center of brick core, and the slit both sides of center are respectively equipped with the twice slit on the brick core, and the length of slit reduces to brick core marginal position from brick core center successively.
Said brick cup bottom inner distance at the bottom of the ladle bag is 600mm～700mm.
The center line of said brick core is parallel to horizontal plane.
Said foundry ladle air brick is installed on the position of center line of a side relative with the molten steel pocket deslagging mouth.
Said slit and horizontal plane laterally arrange.
Said foundry ladle air brick, the technical scheme of employing has the following advantages:
On the one hand, said foundry ladle air brick adopts two brick cored structures, and brick core and brick cup are sintered into one, and the air brick of two brick cores can effectively improve air brick air permeable effect and service life;
On the other hand, said foundry ladle air brick is distributed with specific narrow slit structure on the brick core; The shared gas secret room of two brick cores; Slit is communicated with the gas secret room and ladle is inner, and the air brick of two brick cored structures has effectively improved the shape facility of liquid level exposed surface in use; Increase the liquid level exposed surface, had the auxiliary effect of skimming of preferable air blowing.
Description of drawings
Facing the content of each width of cloth accompanying drawing expression of specification of the present invention and the mark among the figure down briefly explains:
Fig. 1 is the structural representation of foundry ladle air brick of the present invention;
Fig. 2 is with the aid of pictures for bowing of Fig. 1 foundry ladle air brick;
Fig. 3 is the exposed surface characteristic sketch map that the air brick effect forms in the prior art;
Fig. 4 is the exposed surface characteristic sketch map that the air brick effect forms under two air blowing effects in the prior art;
The exposed surface characteristic sketch map that Fig. 5 forms for foundry ladle air brick effect of the present invention;
Mark among the above-mentioned figure is:
1, brick cup, 2, the brick core, 3, slit, 4, the gas secret room, 5, exposed surface.
The specific embodiment
Contrast accompanying drawing below, through the description to optimum embodiment, specific embodiments of the invention is done further detailed explanation.
Like Fig. 1 and shown in Figure 2; Said foundry ladle air brick comprises the brick cup 1 of being located at the ladle side, is provided with gas secret room 4 at an end of brick cup 1; In brick cup 1, be provided with the pyramid type cavity that is communicated with gas secret room 4; In this pyramid type cavity, be provided with brick core 2, on brick core 2, be provided with the slit 3 that supplied gas is passed through, this slit 3 is communicated with gas secret room 4; Said pyramid type cavity is two, and in two pyramid type cavitys, is equipped with brick core 2, and brick core 2 is sintered into one with brick cup 1; Said foundry ladle air brick has increased by a brick core 2, and the structure of two brick cores 2 can not only make the air penetrability of air brick improve greatly; Effectively improve the service life of air brick; Simultaneously, with respect to the mode of single brick core 2 and increase gas pressure, the ladle top of the slag has formed bigger bare area; Bare area increases, and can access the auxiliary effect of skimming of preferable air blowing.
Two brick cores 2 and brick cup 1 integral sintered being integral are equipped with the slit 3 that is communicated with gas secret room 4 and ladle inside on brick core 2, the width of slit 3 is 0.15～0.20mm; The length of slit 3 and number can be adjusted according to actual needs, and slit 3 is arranged in parallel, and is as shown in Figure 5; On two brick cores 2, be equipped with five road slits 3; Wherein one slit 3 is located at the center of brick core 2, and slit 3 both sides of center are respectively equipped with twice slit 3 on brick core 2, and its length is respectively 12mm and 8mm; Slit 3 length that are positioned at brick core 2 centers are 16mm, and promptly the length of slit 3 reduces to brick core 2 marginal positions from brick core 2 centers successively; The slit 3 of this structure distribution can effectively improve air brick life-span and air permeable effect; Gas gets into gas secret room 4 by admission line and is assigned in the slit 3 of two brick cores 2; Can effectively improve gas and get into flow distribution characteristic in the ladle; Can form the big exposed surface of segment angle at liquid level, improve the effect of skimming greatly.
Be further to guarantee the auxiliary effect of skimming of foundry ladle air brick, said foundry ladle air brick, the installation site be inboard 600mm～700mm at the bottom of the ladle bag, promptly brick cup 1 bottom inner distance at the bottom of the ladle bag is 600mm～700mm; Ladle adopts the built-in type installation method, guarantees two brick cores, 2 horizontal positioned during installation, and promptly the center line of brick core 2 is parallel to horizontal plane; Said foundry ladle air brick is installed on the position of center line of a side relative with the molten steel pocket deslagging mouth, will keep air brick slit 3 levels during installation, and promptly slit 3 laterally arranges with horizontal plane.
Following table is different air bricks technical-economic indexes in the commercial Application process, is specially:
Take off different process characteristics technical-economic index in the slag operation:
Visible by table, adopt ladle to blow and assist the technology of skimming can reduce slag-removing time, reduce the iron loss of skimming; Converter molten steel returns sulphur to be reduced greatly; And auxiliary the skimming of foundry ladle air brick air blowing according to the invention, these indexs are further improved, and have improved the air brick through-blowing rate greatly; It has improved the air brick air permeable effect and has improved service life, gives full play to the auxiliary action effect of skimming of blowing.
Fig. 3 and Fig. 4 are the exposed surface characteristic that traditional air brick effect forms; The exposed surface characteristic that Fig. 5 forms for foundry ladle air brick effect of the present invention; Test is the water model test that is based upon on the principle of similitude basis among the figure, and air brick is installed in sustained height in the test, air-blowing quantity is controlled at same level; Visible by Fig. 3, it is little that single brick core air brick list blowing mould formula forms the exposed surface area, and segment angle is little, and its exposed surface characteristic does not play one's part to the full on being skimmed in the dead angle in elimination to the auxiliary poor effect of skimming especially; As shown in Figure 4, in the two blowing mould formulas of single brick cored structure air brick, under the situation that promptly gas pressure increases, the exposed surface area increases relatively; Shown in Figure 5; The exposed surface area that forms under the foundry ladle air brick list blowing mould formula of the present invention increases at most; And the segment angle of exposed surface increases greatly, and it is to the improvement dead angle of skimming, and it is favourable to improve the efficient of skimming; Comparison diagram 3, Fig. 4 and Fig. 5, foundry ladle air brick of the present invention form the exposed surface characteristic and more help auxiliary skimming; The air brick practical function effect of simultaneously two brick cores had both had the characteristics such as simplification execute-in-place of single brick core list blowing mould formula; Have two blowing mould formulas or many blowing moulds formula again to the skim advantage of effect of improvement; Also solved simultaneously the not good shortcoming of traditional ladle air brick air permeable effect, the realization hot metal pretreatment technology is taken off the economical and efficient operation of slag operation.
Above the present invention has been carried out exemplary description; Obviously the concrete realization of the present invention does not receive the restriction of aforesaid way; As long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; Or design of the present invention and technical scheme are directly applied to other occasion without improving, all within protection scope of the present invention.
Claims (9)
1. foundry ladle air brick; Comprise the brick cup (1) of being located at the ladle side; End at brick cup (1) is provided with gas secret room (4), in brick cup (1), is provided with the pyramid type cavity that is communicated with gas secret room (4), in this pyramid type cavity, is provided with brick core (2); On said brick core (2), be provided with the slit (3) that supplied gas is passed through, this slit (3) is communicated with gas secret room (4); It is characterized in that: said pyramid type cavity is two, and in two pyramid type cavitys, is equipped with brick core (2), and said brick core (2) is sintered into one with said brick cup (1).
2. according to the described foundry ladle air brick of claim 1, it is characterized in that: said brick core (2) is that symmetrical centre is symmetrical set with brick cup (1) center, and brick core (2) one ends extend into ladle inside, and brick core (2) exceeds 20～30mm than the anti-face of ladle.
3. according to claim 1 or 2 described foundry ladle air bricks, it is characterized in that: on said brick core (2), be equipped with the slit (3) that is communicated with gas secret room (4) and ladle inside, the width of said slit (3) is 0.15～0.20mm.
4. according to the described foundry ladle air brick of claim 3, it is characterized in that: said slit (3) is arranged in parallel.
5. according to the described foundry ladle air brick of claim 4, it is characterized in that: on two brick cores (2), be equipped with five road slits (3); Wherein one slit (3) is located at the center of brick core (2), and slit (3) both sides of going up the center at brick core (2) are respectively equipped with twice slit (3), and the length of slit (3) reduces to brick core (2) marginal position from brick core (2) center successively.
6. according to the described foundry ladle air brick of claim 5, it is characterized in that: said brick cup bottom inner distance at the bottom of the ladle bag is 600mm～700mm.
7. according to the described foundry ladle air brick of claim 6, it is characterized in that: the center line of said brick core (2) is parallel to horizontal plane.
8. according to the described foundry ladle air brick of claim 7, it is characterized in that: said foundry ladle air brick is installed on the position of center line of a side relative with the molten steel pocket deslagging mouth.
9. according to the described foundry ladle air brick of claim 8, it is characterized in that: said slit (3) laterally arranges with horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210111692.8A CN102642020B (en) | 2012-04-17 | 2012-04-17 | Permeable brick for ladle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210111692.8A CN102642020B (en) | 2012-04-17 | 2012-04-17 | Permeable brick for ladle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102642020A true CN102642020A (en) | 2012-08-22 |
| CN102642020B CN102642020B (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210111692.8A Active CN102642020B (en) | 2012-04-17 | 2012-04-17 | Permeable brick for ladle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102642020B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105861783A (en) * | 2016-06-08 | 2016-08-17 | 武汉科技大学 | Ladle refining air brick with micro argon bubbles formed through bottom blowing |
| CN109112320A (en) * | 2018-10-30 | 2019-01-01 | 辽宁科技大学 | A kind of bottom blowing copper smelting device supplied using air brick |
| CN110171055A (en) * | 2019-06-27 | 2019-08-27 | 浙江科特高温新材料有限公司 | Twin-core integral air brick and preparation method thereof, method for constructing bottom of steel ladle |
Citations (6)
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| JPS51116120A (en) * | 1975-04-03 | 1976-10-13 | Tokyo Yogyo Kk | Vesseel and runner of molten metal for manufacturing iron |
| CN2105350U (en) * | 1991-05-10 | 1992-05-27 | 冶金部洛阳耐火材料研究院 | Integrated structure straight hole ventilation brick for steel ladle |
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2012
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Patent Citations (6)
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| JPS51116120A (en) * | 1975-04-03 | 1976-10-13 | Tokyo Yogyo Kk | Vesseel and runner of molten metal for manufacturing iron |
| CN2105350U (en) * | 1991-05-10 | 1992-05-27 | 冶金部洛阳耐火材料研究院 | Integrated structure straight hole ventilation brick for steel ladle |
| CN2743063Y (en) * | 2004-08-27 | 2005-11-30 | 濮阳濮耐高温材料有限公司 | Improved solid permeable brick |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105861783A (en) * | 2016-06-08 | 2016-08-17 | 武汉科技大学 | Ladle refining air brick with micro argon bubbles formed through bottom blowing |
| CN109112320A (en) * | 2018-10-30 | 2019-01-01 | 辽宁科技大学 | A kind of bottom blowing copper smelting device supplied using air brick |
| CN110171055A (en) * | 2019-06-27 | 2019-08-27 | 浙江科特高温新材料有限公司 | Twin-core integral air brick and preparation method thereof, method for constructing bottom of steel ladle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102642020B (en) | 2014-12-10 |
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