CN101381788B - Fireproof brick with equal terminal difference for large converter ladle inner wall and masonry method thereof - Google Patents
Fireproof brick with equal terminal difference for large converter ladle inner wall and masonry method thereof Download PDFInfo
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- CN101381788B CN101381788B CN2008100489366A CN200810048936A CN101381788B CN 101381788 B CN101381788 B CN 101381788B CN 2008100489366 A CN2008100489366 A CN 2008100489366A CN 200810048936 A CN200810048936 A CN 200810048936A CN 101381788 B CN101381788 B CN 101381788B
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- brick
- wedge
- radius
- wall
- ladle
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Abstract
The invention relates to a firebrick for the inner wall of a ladle of a converter with outer radius of over 2,000 millimeters and a bricking method thereof. The method overcomes the disadvantages thatthe prior wedgy and straight mixed brick often has the phenomena that a straight brick is sunken by extraction and breaks down or a residual brick falls off, or needs multi-breed to cause excessive modules and increases cost and the like. The measure for solving the problems is to use the isometric end difference firebrick for the inner wall of the ladle of the large-scale converter and the bricking method thereof; the end faces of the firebrick are totally of a wedgy shape; the difference between the relatively large end ad and the relatively small end ax of each wedgy block is 10 millimeters; and the bricking method comprises the following steps: each circle or each layer of the inner wall of the ladle is bricked by two different kinds of the wedgy firebrick 1 with relatively small radius and the wedgy firebrick 2 with relative large radius alternately. The firebrick can be used with a module of the prior wedgy brick with the end difference of 10 millimeters together; the radiatingvertical seam in the radius direction of a brick body is inosculated with the radioactive ray of the radius so as to produce a staggered platform uneasily; and the brick body has smooth surface, can notproduce the phenomena of extractive sinking, breaking and the like, and the firebrick is safe, reliable and low in cost and only uses two kinds of wedgy bricks.
Description
Technical field
The present invention relates to refractory brick and building method, more belong to and be used for refractory brick and the building method thereof of large-scale (more than the general outside radius 2000mm) converter ladle inner wall along the short transverse vary in diameter.Also can be used for large-sized rotary kiln inwall refractory brick and building method thereof.
Background technology
China's steel-making ladle liner outside radius suitable for reading is less than the medium and small tonnage ladle working lining of 2000mm, it wraps wall working lining thickness 150mm-190mm (size b in the table 1), lays bricks and all can adopt brick number 15/20 and brick number 15/10 or brick number 17/20 and brick number 17/10 or brick number 19/20 and brick number 19,/10 two kind of brick brick design of double-wedge (directly shape brick) that wedge brick is joined block.At present, (its bag wall working lining thickness reaches 210mm above (size b in the table 1) to the large-tonnage ladle, and port radius reaches 2350mm (bag wall working lining middle radius R on the cylinder-packing
pBe 2160mm) more than, and in the table 1 the 21/10 brick limit to use middle radius be 1938mm, thereby present double-wedge brick can't satisfy building by laying bricks or stones of large-tonnage ladle, has only to adopt wedge brick to mix with directly " wedge is straight " of shape brick to lay bricks.Countries such as Japan, America and Europe also still adopt this kind " wedge is straight " to mix the method for laying bricks at present; If the large-tonnage ladle also adopts the brick brick of double-wedge as the less medium and small tonnage ladle of radius, shape brick directly, because of the brick type of the thick wedge brick 17/10,19/10,21/10,23/10 of side is only arranged at present, it is not enough being imposed in large converter ladle inner wall, must set up a kind of brick shape again, promptly want big small end difference in size (a
d-a
x) very little of waiting under the intermediate sizes 100mm series only thick little wedge brick of side of the brick of poor 5mm number (as the 17/5* of table 1 imagination), it has not only increased the kind of brick and die needed, increase production cost, also can cause because very difficult the differentiation and the big small end of discerning the thick little wedge brick of side violation occurs and build problems such as the abominable phenomenon of " big end inwardly " (answering " the big end outwardly " under the normal circumstances) of regulation and stipulation, bag reduction in age by laying bricks or stones in building operation by laying bricks or stones.
Table 1 at present ladle wall such as uses at thick wedge brick size of intermediate sizes side and size characteristic
At present, domestic mammoth conveter ladle liner, as 250 tons of ladles, the thick 210mm of working lining, ladle wall one ring adopts " wedge is straight " of the thick wedge brick of side (brick number 21/10) and straight shape brick (brick number 21/0) to mix with brick and lays bricks, and this is because of taper type bag wall working lining middle radius R
pChange from 2000～2350mm, all can only reach 2142mm (see Table 1 brick number 21/10), lay bricks radius to 2350mm with increase so need join the straight shape brick of block (brick number 21/0) with the brick maximum middle radius that number 21/10 single wedge brick is laid bricks.Join in laying bricks just because of the bag wall and to have built big small end difference in size a
d-a
x=0 brick number 21/0 straight shape brick, the cold shrinkage and thermal expansion and the tipping that are subjected to intermittent operation in ladle uses rotate, and it is heavy taking out of straight shape brick usually to occur, breaks to fall or residual brick comes off, and causes work-ing life short, even molten steel leakage accident occurs.This is that at present domestic and international large-tonnage ladle wall generally adopts " wedge is straight " to mix the fatal shortcoming of laying bricks and designing.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, make with " wait end poor " double-wedge brick by implementing large-tonnage ladle inwall that ladle liner is firm, life cycle long, the refractory brick that is used for large converter ladle inner wall and the building method thereof of mould therefor minimizing.
Realize the technical measures of purpose:
Be used for the fireproof brick with equal terminal difference of large converter ladle inner wall, it is: the end surface shape of refractory brick all is a wedge shape, the big relatively end a of every block of wedge brick
dWith relative small end a
xThe difference at two ends is 10mm.
It is: the wedge shape refractory brick that the difference at every two ends is 10mm is used for the ladle shape that the converter ladle constantly changes along the short transverse diameter.
Be: build each ring of ladle inner wall or layer by laying bricks or stones and interlock with relative minor radius wedge brick and two kinds of different wedge shape refractory brick of relative long radius wedge brick and build by laying bricks or stones.
If the large-tonnage ladle also adopts the brick brick of double-wedge as the less medium and small tonnage ladle of radius, shape brick directly, because of the brick type of the thick wedge brick 17/10,19/10,21/10,23/10 of side is only arranged at present, it is not enough being imposed in large converter ladle inner wall, must design a kind of brick shape again, promptly want big small end difference in size (a
d-a
x) very little of waiting under the intermediate sizes 100mm series only thick little wedge brick of side of the brick of poor 5mm number (as the 17/5* of table 1 imagination).It has not only increased the kind of brick and die needed, also can have following shortcoming (only is that the thick little wedge brick of side of 5mm is an example with big small end difference in size):
1) suppose the only thick little wedge brick of brick 17/5* side of 5mm of big small end difference in size, its big small end gap is Δ a '=(a than only
d-a
x)/b=0.0294, computational length b '=2/ Δ a '=2/0.0294=68.0mm that may come off according to " stove lining brick size design and radiation shape lay bricks reckoner " residual brick.And the big small end gap ratio of the brick number thick wedge brick of 17/10 side of big small end difference in size 10mm is 0.0588, the computational length b ' that residual brick may come off=2/0.0588=34.0mm.Both residual bricks length that comes off differs one times.If calculate by the speed 1mm/ bag of deteriorating, adopt big small end difference only during the thick little wedge brick of the side of 5mm brick 17/5*, bag reduces 34 times age.
2) the big small end difference thick little wedge brick of side of 5mm only is difficult to distinguish big end of identification and small end, adds ± permissible variation in dimension of 1mm that big small end difference may occur only 3mm, almost has been tantamount to straight shape brick.Just because of be difficult to distinguish and the big small end of discerning the thick little wedge brick of side, often occur violating the abominable phenomenon of " big end inwardly " (the answering " big end outwardly " under the normal circumstances) of building regulation and stipulation by laying bricks or stones in building operation by laying bricks or stones, this is also more serious than the problem that occurs with addition of straight shape brick.
If big relatively end a
dWith relative small end a
xThe difference at two ends then only is applicable to the ladle of outside radius less than 1800mm greater than 10mm.
In sum, for big relatively end a
dWith relative small end a
xThe difference value at two ends is at the wedge brick of 10mm, and it is the most reasonable to be used for outside radius and to be the above large-tonnage of 1800mm and constantly change building by laying bricks or stones of ladle along the short transverse diameter.
Characteristics of the present invention:
1) manufacturing of " wait end poor " double-wedge brick of different lateral thickness of the present invention is very easy, and is can mould shared for the wedge brick of 10mm with existing end difference, just suppresses the thickness difference, so production cost greatly reduction owing to save mould.
2) owing to cancelled straight shape brick, the radiation perps of masonry radial direction is easy to coincide with the radius radioactive rays in building operation by laying bricks or stones, is difficult for producing faulting of slab ends, masonry smooth surface; Can not produce take out heavy, breaking falls or phenomenon that residual brick comes off.
3) the big small end of brick identification and differentiation easily.
4) cancelled straight shape brick, adopted two kinds of thick wedge bricks of side of " wait end poor ", taking out of occurring in the time of straight shape brick can not occurring joining is heavy, breaks to fall or residual brick comes off, and the phase long service life of giving can't produce the bleed-out phenomenon.
5) promptly 170～230mm, different outside radius are above large-tonnage of 1800mm and the requirement of building by laying bricks or stones that constantly changes ladle along the short transverse diameter to satisfy different wall fully.Also can be used for outside radius 1800mm above large-sized rotary kiln inwall refractory brick and building method thereof.
Description of drawings
Fig. 1 is the end face structure synoptic diagram that is used for the fireproof brick with equal terminal difference of large converter ladle inner wall
Fig. 2 is for adopting the side direction structural representation of refractory brick shown in Figure 1
The ladle inner wall vertical view that Fig. 3 " wait end poor " shown in Figure 1 for adopting double-wedge refractory brick is built by laying bricks or stones
Fig. 4 mixes the ladle inner wall vertical view of joining block for prior art adopts " wedge is straight "
Embodiment
Be further described below in conjunction with accompanying drawing:
Embodiment 1
Be to adapt to the long radius ladle and adopt the brick brick requirement of double-wedge, as one group of relative minor radius wedge brick 1, other increases by one group of relative long radius wedge brick 2 and is made into double-wedge brick ring, the big relatively end a of every brick with it with the wedge brick in the table 1
dWith relative small end a
xThe difference at two ends is 10mm.Long radius wedge brick 2 size characteristics are selected by following method relatively:
By every ring or layer brick using amount Simple Calculation formula " stove lining brick size design and radiation shape lay bricks reckoner ":
K
x=0.314 (R
Pd-R
p) (minor radius wedge brick 1 relatively)
K
d=0.314 (R
p-R
Px) (long radius wedge brick 2 relatively)
R
PxAnd R
Pd---be respectively the middle radius of minor radius wedge brick 1 and relative long radius wedge brick 2 relatively in the brick brick of the double-wedge of calculating;
R
p---the middle radius of the brick brick of double-wedge that calculates.
Middle radius R
pCalculation formula:
R
p＝b(a
d+a
x)/[2(a
d-a
x)]
By " stove lining brick size design and radiation shape lay bricks reckoner " achievement in research, R to the brick size
Pd/ R
PxBe necessary for adjacent simple integer ratio.For example 5: 4,6: 5 etc.R
Pd/ R
Px=a
Pd/ a
Px(a
PxAnd a
Pd---be respectively the intermediate sizes of minor radius wedge brick 1 and relative long radius wedge brick 2/mm) relatively in the brick brick of the double-wedge of calculating.R among the present invention
Pd/ R
PxGet 6/5.R
PdAnd R
PxDefinition know R
Pd/ R
Px=a
Pd/ 100 (minor radius wedge brick 1 intermediate sizes 100 does not contain the 2mm brickwork joint relatively), then the intermediate sizes a of relative long radius wedge brick 2
Pd=100 * 6/5=120.0mm.The middle radius that promptly increases relative long radius wedge brick 2 increases 120.0-100=20.0mm.
According to a
p=120.0mm, a
p=(a
d+ a
x)/2 and (a
d-a
x)=10mm calculates the big small end size a of relative long radius wedge brick 2
d/ a
xBe 125/115.
As stated above, worked out large-tonnage ladle wall with " wait end poor " thick wedge brick size of side and size characteristic table (seeing Table 2) in conjunction with different ladle wall thickness
Table 2. is built the mammoth conveter ladle liner by laying bricks or stones with " wait end poor " thick wedge brick size of side and size characteristic table
In the table
B: be the length of wedge shape refractory brick;
a
d: be the thickness of big relatively end;
a
x: be the thickness of relative small end;
C: be the width of wedge shape refractory brick
Embodiment 1
Outside radius 2000mm, ladle wall one ring or the layer of the thick 170mm of working lining, the middle radius R of the brick brick of calculating double-wedge
pBe 1915mm, the middle radius R in table 2
p1734.0mm～2074.0mm range of application when adopting the brick brick of " wait end poor " of the present invention double-wedge, uses above-mentioned formula to calculate relative minor radius (R
pBe 1734.0mm) the i.e. 17/10 quantity K of wedge brick 1
17/10And relative long radius (R
pBeing 2074.0mm) wedge brick 2 is 17/10d quantity K
17/10d
K
17/10=0.314 (2074-1915)=49.45 piece (minor radius wedge brick 1 relatively)
K
17/10d=0.314 (1915-1734.0)=56.83 piece (long radius wedge brick 2 relatively)
So this outside radius ladle wall one ring or floor can be by 50 bricks number 17/10 relative minor radius wedge brick 1 and 57 relative long radius wedge brick 2 interlaced being built into of 17/10d " wait hold poor " double-wedge brick rings (seeing accompanying drawing 3).The quantity that all the other rings or layer calculate relative minor radius wedge brick 1 and relative long radius wedge brick 2 according to brick amount calculation formula is successively interlocked and is joined block, until end.
Embodiment 2
Example 2 outside radius 2400mm, ladle wall one ring or the layer of the thick 210mm of working lining, the middle radius R of the brick brick of calculating double-wedge
pBe 2295mm, the middle radius R in table 2
p2142.0mm～2562.0mm range of application when adopting the brick brick of " wait end poor " of the present invention double-wedge, uses above-mentioned formula to calculate relative minor radius (R
pBe 2142.0mm) the i.e. 21/10 quantity K of wedge brick 1
21/10And relative long radius (R
pBe 2562.0mm) wedge brick 21/10d quantity K
21/10d
K
21/10=0.314 (2562-2295)=83.838 piece (minor radius wedge brick 1 relatively)
K
21/10d=0.314 (2295-2142.0)=48.042 piece (long radius wedge brick 2 relatively)
" wait hold poor " double-wedge brick ring so this outside radius ladle wall one ring or floor can be interlocked and built by laying bricks or stones by 84 bricks number 21/10 relative minor radius wedge brick 1 and 48 blocks of relative long radius wedge bricks 2 of 21/10d.The quantity that all the other rings or layer calculate relative minor radius wedge brick 1 and relative long radius wedge brick 2 according to brick amount calculation formula is successively interlocked and is joined block, until end.
Embodiment 3
Example 3 outside radius 2600mm, ladle wall one ring or the layer of the thick 230mm of working lining, the middle radius R of the brick brick of calculating double-wedge
pBe 2485mm, the middle radius R in table 2
p2346.0mm～2806.0mm range of application when adopting the brick brick of " wait end poor " of the present invention double-wedge, uses above-mentioned formula to calculate relative minor radius (R
pBe 2346.0mm) the i.e. 23/10 quantity K of wedge brick 1
23/10And relative long radius (R
pBeing 2806.0mm) wedge brick 2 is 23/10d quantity K
23/10d
K
23/10=0.314 (2806-2485)=100.794 piece (minor radius wedge brick 1 relatively)
K
23/10d=0.314 (2485-2346.0)=43.646 piece (long radius wedge brick 2 relatively)
" wait hold poor " double-wedge brick ring so this outside radius ladle wall one ring or floor can be interlocked and built by laying bricks or stones by 101 bricks number 23/10 relative minor radius wedge brick 1 and 44 blocks of relative long radius wedge bricks 2 of 23/10d.The quantity that all the other rings or layer calculate relative minor radius wedge brick 1 and relative long radius wedge brick 2 according to brick amount calculation formula is successively interlocked and is joined block, until end.
Through test and detection, radiation perps and the radius radioactive rays of implementing ladle liner masonry radial direction of the present invention coincide, and no faulting of slab ends produces, and masonry smooth surface, firm, firm, conformance with standard requirement fully.
Claims (3)
1. be used for the fireproof brick with equal terminal difference of large converter ladle inner wall, it is characterized in that: the end surface shape of refractory brick all is a wedge shape, the big relatively end a of every block of wedge brick
dWith relative small end a
xThe difference at two ends is 10mm.
2. the fireproof brick with equal terminal difference that is used for large converter ladle inner wall as claimed in claim 1 is characterized in that: the wedge shape refractory brick that the difference at every two ends is 10mm is used for the ladle shape that the converter ladle constantly changes along the short transverse diameter.
3. the described building method that is used for the fireproof brick with equal terminal difference of large converter ladle inner wall of claim 1 is characterized in that: build each ring of ladle inner wall or layer by laying bricks or stones and interlock with relative minor radius wedge brick (1) and (2) two kinds of different wedge shape refractory brick of relative long radius wedge brick and build by laying bricks or stones.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100489366A CN101381788B (en) | 2008-08-21 | 2008-08-21 | Fireproof brick with equal terminal difference for large converter ladle inner wall and masonry method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100489366A CN101381788B (en) | 2008-08-21 | 2008-08-21 | Fireproof brick with equal terminal difference for large converter ladle inner wall and masonry method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101381788A CN101381788A (en) | 2009-03-11 |
| CN101381788B true CN101381788B (en) | 2010-04-07 |
Family
ID=40461840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100489366A Expired - Fee Related CN101381788B (en) | 2008-08-21 | 2008-08-21 | Fireproof brick with equal terminal difference for large converter ladle inner wall and masonry method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101381788B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6310610B1 (en) * | 2017-12-06 | 2018-04-11 | 黒崎播磨株式会社 | Brick lining method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1244270A (en) * | 1969-01-08 | 1971-08-25 | Oesterr Amerikan Magnesit | Wearing lining for a converter mouth |
| CN2181665Y (en) * | 1993-12-31 | 1994-11-02 | 徐义林 | Tenoned wedge refractory brick |
| CN101182221A (en) * | 2007-12-04 | 2008-05-21 | 宫营方 | Standardized production application of rotary kiln firebrick |
-
2008
- 2008-08-21 CN CN2008100489366A patent/CN101381788B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1244270A (en) * | 1969-01-08 | 1971-08-25 | Oesterr Amerikan Magnesit | Wearing lining for a converter mouth |
| CN2181665Y (en) * | 1993-12-31 | 1994-11-02 | 徐义林 | Tenoned wedge refractory brick |
| CN101182221A (en) * | 2007-12-04 | 2008-05-21 | 宫营方 | Standardized production application of rotary kiln firebrick |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101381788A (en) | 2009-03-11 |
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