CN108193022A - Argon is to extend the method for bottom blowing monolithic devices air brick comprehensive life successively - Google Patents
Argon is to extend the method for bottom blowing monolithic devices air brick comprehensive life successively Download PDFInfo
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- CN108193022A CN108193022A CN201810225533.8A CN201810225533A CN108193022A CN 108193022 A CN108193022 A CN 108193022A CN 201810225533 A CN201810225533 A CN 201810225533A CN 108193022 A CN108193022 A CN 108193022A
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- brick
- air brick
- air
- block
- porous core
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- 239000011449 brick Substances 0.000 title claims abstract description 196
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 229910052786 argon Inorganic materials 0.000 title claims abstract description 23
- 238000007664 blowing Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 25
- 239000004575 stone Substances 0.000 claims abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000001301 oxygen Substances 0.000 claims abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 11
- 230000010412 perfusion Effects 0.000 claims abstract description 10
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 8
- 239000010431 corundum Substances 0.000 claims abstract description 8
- 239000012188 paraffin wax Substances 0.000 claims abstract description 8
- 230000001680 brushing effect Effects 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 238000007670 refining Methods 0.000 claims description 13
- 239000010721 machine oil Substances 0.000 claims description 10
- 238000004321 preservation Methods 0.000 claims description 8
- 238000007711 solidification Methods 0.000 claims description 8
- 230000008023 solidification Effects 0.000 claims description 8
- 238000004806 packaging method and process Methods 0.000 claims description 7
- 238000009417 prefabrication Methods 0.000 claims description 7
- 208000004141 microcephaly Diseases 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 230000004069 differentiation Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- 229910052596 spinel Inorganic materials 0.000 description 10
- 239000011029 spinel Substances 0.000 description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000009738 saturating Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 229910000423 chromium oxide Inorganic materials 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001844 chromium Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/072—Treatment with gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/02—Linings
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Argon is to extend the method for bottom blowing monolithic devices air brick comprehensive life successively,Provide a kind of ventilative brick structure and production method,It is remarkably improved bottom-blown air brick comprehensive life,Build two blocks of air bricks in ladle by laying bricks or stones,First block of air brick is conventional monolithic devices air brick,Second block of air brick is by ventilating seat brick,Porous core and perfusion castable three parts composition,The height that castable is perfused is 30mm 100mm,It is 40% 80% that castable and the uncombined area in brick cup bellmouth side, which is perfused,,Faying face is not evenly distributed in strip,Castable is perfused, the gap that thickness is 1mm 2mm is set by the method for brushing paraffin when making with ventilative wicking surface,First block of air brick is first used during use,Self-flowing material is blocked after first block of air brick reaches the service life with corundum to block,Then second block of air brick is blown open with oxygen rifle to begin to use.
Description
Technical field
The present invention relates to the BOTTOM ARGON BLOWING air bricks of refinement outside-furnace field, particularly fire resisting material field.
Background technology
External refining is to ensure the critical process of its grade of steel product quality and raising, and in furnace outer refining process, BOTTOM ARGON BLOWING is saturating
Gas brick is its Core Feature element, and the meaning of air brick is by conveying argon gas into packet so as to reach the mesh of liquid steel refining
's.
Air brick is formed from it at present is divided into split type and two kinds of monoblock type in structure, two kinds of air bricks respectively have good and bad spy
Point, but the more or monoblock type air brick at domestic smelting iron and steel scene.Monoblock type air brick refers in cast brick cup
In the process, air brick core is preset in brick cup mold, becomes an entirety (direct prefabrication type), also have porous core and
After ventilating seat brick is made respectively, the two is fitted together (packaging) by chamotte, when use is built by laying bricks or stones at packet bottom, generally
For when porous core is consumed to safe altitude, the integral air brick complete mission, need offline replacement.Whole brick has peace
Entirely, reliably, the advantages of installation is built by laying bricks or stones the characteristics of simple, split air brick is that porous core can be online after being consumed to safe altitude
Heat changes porous core, therefore its comprehensive life is high compared with integral air brick, but its security risk is higher, this is that many steel mills are unwilling to adopt
One of the main reason for split type air brick.
With the development of air brick technology, pass through brick, the optimization design of air supply channel and the refinery practice of breathing freely
It continuously improves, such as the addition of pro-molten refining slag, the adding technology of refined alloy etc., general middle-size and small-size ladle only needs one piece to breathe freely
Brick can meet refining requirement, if using split type air brick, security risk is higher, needs stringent field management and installation
Build working specification by laying bricks or stones, if using monoblock type air brick the air brick service life may influence entire ladle lining.
It is practical at present smelt scene there is also a ladle build two blocks of monolithic devices air bricks by laying bricks or stones and only with one piece of Argon, completely
Under the premise of foot refining requirement, one piece of air brick Argon is first opened, another piece of not Argon every several times (such as 5 times), is closed current
Air brick is opened another piece of air brick Argon, is so recycled, and this technique can extend the bottom-blown air brick longevity to a certain extent
Life, but problem appear to is that the air brick of Argon is not immersed in molten steel for a long time and forms natural wastage, and can be easy to lead
Cause cleans the technology accidents such as obstructed when oozing steel, the fracture of brick core, opening.
About the design of air brick flow, adjusted at present generally by the quantity and specification of porous core air supply channel,
Such as slot-type ventilating brick, the quantity of slit can be arranged to 24, can also be arranged to 48, but the flow of the latter is necessarily than preceding
Person is big.
About air brick material, color differentiation can be Chrome-free and containing two class of chromium after burning, after the high temperature of air brick containing chromium is burnt
For color according to chromium content in different degrees of red, Chrome-free air brick is in raw material color, generally white.
Invention content
In order to solve above-mentioned contradiction existing for current middle-size and small-size air brick of steel ladle, with insufficient, the present invention is using monolithic devices saturating
Under the premise of gas brick, devise air brick in a kind of ladle first builds form by laying bricks or stones, while provide a kind of structure of air brick,
Make it that can achieve the purpose that extend the air brick service life when in use.
The technical solution adopted in the present invention is：
1, by adjusting the slit of porous core, designing a kind of higher air brick of flow enables it to ensure one block of air brick
Meet ladle refining requirement, when Ladle Bottom is built by laying bricks or stones, build two blocks of air bricks by laying bricks or stones, during onsite application, first using first block of air brick,
Until it reaches terminal life, first piece of air brick corundum for using terminal life is blocked self-flowing material blocks, then
Make its start-up operation by second piece of porous core is boiled with oxygen rifle, first block of air brick is conventional monolithic devices air brick, second piece
The porous core of air brick is not directly exposed to brick cup surface, but has the distance of 30mm-100mm away from brick cup upper surface and be embedded in seat
Monolithic devices air brick inside brick.
The characteristics of the technical program is only with one piece of Argon, air brick when building two blocks of higher air bricks of flow but work by laying bricks or stones
Flow can be easier to, reliably adjust at present, therefore can meet general ladle flow demand, such as 180T refining ladles, when first piece
When air brick is using all service life, blocks self-flowing material with corundum and block, ensure safety；Secondly, it is the characteristics of second block of air brick
Porous core is not contacted with molten steel before porous core is not directly exposed to brick cup surface, that is, second piece of air brick Argon, is ensured
Self performance, when first block of air brick was used to the service life, the class brick cup material of the pre-buried 30mm-100mm thickness of second block of air brick
Also basic loss finishes material, is easy to be blown with oxygen rifle at this time and logical carries out Argon work.
The production method of second block of air brick is：
1.1 direct prefabrication type integral air bricks：
1.1.1 porous core is placed on inside brick cup mold, porous core is lower 30mm-100mm than brick cup at this time, needs saturating
Gaseous core microcephaly fixes an easily demoulding taper die, and taper die concentric reducer diameter difference is 5mm-10mm, major part outwardly,
Highly not less than brick cup upper surface, taper die must be completely covered by porous core air supply channel after being contacted with porous core, saturating
Gaseous core microcephaly's brushing a layer thickness is the paraffin of 1mm-2mm, and makes its solidification, then installs taper die, sets conical die
Start prefabricated brick cup after tool, next step disposition is carried out after maintenance, form removal tool, drying；
1.1.2 sundries in the bellmouth of air brick is cleaned out, is in porous core microcephaly's external coating a layer thickness
The paraffin of 1mm-2mm simultaneously makes its solidification, then Zi ventilative wicking surface to brick cup surface discontinuities formula painter on bellmouth side
Industry machine oil, brushing surface are the 40%-80% of bellmouth lateral area, are evenly distributed in strip, can also be with thickness no more than 0.2mm's
Paper slip, plastic foil, which are pasted onto on the side of bellmouth, replaces painter's industry machine oil.
1.1.3 finally perfusion and the distinguishing castable of brick cup material color, the differentiation of color can pass through in bellmouth
The addition of chromium oxide adjusts, and completes the production after drying, it is desirable that refractoriness >=1700 DEG C of castable, 110 DEG C of bakings are perfused
It is roasting for 24 hours under the conditions of compressive resistance and the compressive resistance under the conditions of 1600 DEG C of heat preservation 3h be arrange in pairs or groups therewith it is resistance under brick cup corresponding conditions
The 70%-90% of Compressive Strength, 1600 DEG C burn after Linear change rate be 0.02%-0.35%.
In scheme 1.1.1 the limitation of taper die concentric reducer diameter difference and major part outwardly and smear paraffin requirement be in order to
It can realize making and ensure performance；1.1.2 industrial machine oil is equally smeared in or is replaced with other materials, it is therefore an objective to painting machine
The position of oil, perfusion castable do not generate combination with brick cup, and other positions for not smearing machine oil generate combination, when the air brick is opened
When beginning to use with oxygen rifle it is boiled when convenient for boiled；1.1.3 the difference of middle perfusion castable and brick cup material property may be such that the
During one piece of air brick use, the loss that castable is perfused can be more very fast than brick cup material and cannot be depleted completely, substantially
A pit is formed, it is boiled convenient for oxygen rifle capturing position, equally, perfusion castable and brick cup material are distinguished by chromium oxide
Color is also this purpose.
1.2 packaging integral air bricks：
Porous core is assembled with brick cup by chamotte, at this time self-assembling formation depth be 30mm-100mm bellmouth, bore to
With described in 1.1 on the contrary, then being made according to the method for 1.1.2,1.1.3.
2, two blocks of air bricks are that range of flow under air conditions is in normal temperature state, pressure 0.3MPa, medium
30Nm3/h-65Nm3/ h, and specifically being set according to ladle size, when being on active service in ladle, the pressure of argon bottom-blowing need to be
In the range of 0.8MPa-2.2MPa by hand valve flexibly, facilitate adjustment.
The purpose of requirement that this programme is carried is as far as possible in ton by adjusting air brick flow and adjustment argon bottom-blowing pressure
Implement the present invention on the larger ladle in position to expand application range.
The beneficial effects of the invention are as follows：
1, the feasible adjusted design of air brick flow can ensure that the present invention is implemented as far as possible in larger ladle, mostly new at present
The characteristics of ladle processed is that diameter is smaller and highly higher compared with more early ladle, and this ladle design feature is more suitable for the present invention's
Using；
2, on the one hand the design of second piece of air brick structure and material feature ensures ventilative core performance before use not by ring
Border is influenced or little effect is easily found accurately porous core position again simultaneously and blown open with oxygen rifle；
3, can extend that bottom blowing comprehensive life reaches original through the above scheme 1.5-1.7 times；
4, the raising nature in bottom-blown air brick service life leads to the raising of efficiency, reduces whole ladle lining
The advantageous effects such as the energy consumption waste, avoided air brick generation of changing the day off.
Description of the drawings：
Fig. 1：First piece of air brick sectional view；
Fig. 2：Second piece of air brick sectional view of direct prefabrication type；
Fig. 3：Packaging second piece of air brick sectional view；
Fig. 4：Air brick sectional view before castable is constructed is perfused；
Fig. 5：Industrial machine oil schematic diagram is smeared after the expansion of bellmouth side；
Fig. 6：Sectional view after first block of air brick is used to service life closure；
Fig. 7：Second piece of air brick section shape appearance figure after first block of air brick was used to the service life.
In figure 1.：Ventilating seat brick；②：Porous core；③：Castable is perfused；④：Smear industrial machine oil portion in bellmouth side
Position；⑤：Bellmouth side keeps cleaning position；⑥：The position of porous core surface smear paraffin；⑦：Block self-flowing material；⑧：Fire
Mud；⑨：Bellmouth；⑩：Bellmouth height is 30mm-100mm.
Specific embodiment
1, in 180 tons of refining ladle examples：
1.1 make first block of air brick, and using direct prefabrication type air brick, porous core is 2. narrow using pink fused alumina spinel
Seam, slot number are 54, flow 65Nm3/ h, ventilating seat brick is 1. using corundum spinel, 1. 110 DEG C of ventilating seat brick
Compressive resistance under the conditions of baking for 24 hours is 65MPa, and the compressive resistance under the conditions of 1600 DEG C of heat preservation 3h is 185MPa, 1600 DEG C of burnings
Linear change rate is 0.41% afterwards.
1.2 make second block of air brick, and using direct prefabrication type air brick, porous core is 2. narrow using pink fused alumina spinel
Seam, slot number are 54, flow 65Nm3/ h, ventilating seat brick is 1. using corundum spinel, 1. 110 DEG C of ventilating seat brick
Compressive resistance under the conditions of baking for 24 hours is 65MPa, and the compressive resistance under the conditions of 1600 DEG C of heat preservation 3h is 185MPa, 1600 DEG C of burnings
Linear change rate is 0.41% afterwards, 10. bellmouth height takes 38mm.
3. 1.3 prepare perfusion castable, material selection pink fused alumina spinel, chromic oxide content 3%, 110 DEG C of bakings
Compressive resistance under the conditions of for 24 hours is 58MPa, and the compressive resistance under the conditions of 1600 DEG C of heat preservation 3h is 160MPa, 1600 DEG C burn after line
Change rate is 0.22%.
1.4 second blocks of air bricks are made in after Fig. 4 states, first the stone in porous core 2. one layer of 1mm thickness of external coating
Wax, in bellmouth, 9. industrial machine oil is brushed in side after solidification, and 25mm every wide applies 8 altogether, then 3. pours into perfusion castable
It in bellmouth, smashes or jolt ramming, making can be completed after solidification, without baking, when ventilative brick masonry is in ladle with ladle one
With baking.
1.5 by above-mentioned two pieces of ventilative brick masonries in packet, first with first block of air brick, molten steel is needed to seethe feelings according to refining
Condition adjusts argon flow amount.
1.6 according to certain steel mill's actual conditions, and first block of air brick averagely can be used 38 times, after first block of air brick to service life
First piece of brick cup of air brick 1. steel of hole surface, slag are cleaned up with oxygen rifle.
1.7 second piece of air brick position pattern of observation, depressed area are porous core 2. place position, shown in Fig. 7, use oxygen
The boiled second block of air brick of rifle.
1.8 by ladle vertically-arranged, then 7. blocks first block of air brick with blocking self-flowing material, blocks self-flowing material and seat 7. may be selected
1. girth seam self-flowing material can meet needs to brick, and first after closure block air brick is in shown in Fig. 6.
Ladle normal use after 1.9 closure, selects second piece of air brick argon bottom-blowing.
2, in 100T refining ladle examples：
2.1 make first block of air brick, and using packaging type air brick, 2. porous core uses pink fused alumina spinel slit
Formula air brick, slot number are 36, flow 30Nm3/ h, ventilating seat brick use corundum spinel, ventilating seat brick 1. 110
Compressive resistance under the conditions of DEG C baking for 24 hours is 65MPa, and the compressive resistance under the conditions of 1600 DEG C of heat preservation 3h is 145MPa, 1600 DEG C
Linear change rate is 0.38% after burning.
2. and ventilating seat brick 2.2 make second block of air brick, using packaging integral air brick, make porous core respectively
1. porous core is 2. using pink fused alumina spinel slot-type ventilating brick, slot number is 36, flow 30Nm3/ h, seat of breathing freely
Brick is 1. using corundum spinel, and compressive resistance of the ventilating seat brick 1. under the conditions of 110 DEG C of bakings for 24 hours is 65MPa, 1600 DEG C of heat preservations
Compressive resistance under the conditions of 3h is 145MPa, 1600 DEG C burn after Linear change rate be 0.38%, bellmouth highly takes 45mm, Ran Houtong
Chamotte is crossed 8. to assemble, and the air brick after assembling is spare after 150 DEG C dry.
3. 2.3 prepare perfusion castable, material selection pink fused alumina spinel, chromic oxide content 4%, 110 DEG C of bakings
Compressive resistance under the conditions of for 24 hours is 55MPa, and the compressive resistance under the conditions of 1600 DEG C of heat preservation 3h is 120MPa, 1600 DEG C burn after line
Change rate is 0.21%.
2.4 first in the paraffin of the porous core of second block of air brick 2. one layer of 1mm thickness of external coating, in taper after solidification
9. industrial machine oil is brushed in side in hole, and 20mm every wide applies 8 altogether, then 3. pours into bellmouth perfusion castable, smashes or shake
It is real, making can be completed after solidification, without baking, toasted together with ladle when ventilative brick masonry is in ladle.
2.5 by above-mentioned two pieces of ventilative brick masonries in packet, first with first block of air brick, molten steel is needed to seethe feelings according to refining
Condition adjusts argon flow amount.
2.6 according to certain steel mill's actual conditions, and first block of air brick averagely can be used 40 times, after first block of air brick to service life
First piece of brick cup of air brick 1. steel of hole surface, slag are cleaned up with oxygen rifle.
2.7 second piece of air brick position pattern of observation, depressed area be porous core 2. where position, with oxygen rifle boiled the
Two blocks of air bricks.
2.8 by ladle vertically-arranged, then 7. blocks first block of air brick with blocking self-flowing material, blocks self-flowing material and seat 7. may be selected
1. girth seam self-flowing material can meet needs to brick.
Ladle normal use after 2.9 closure, selects second piece of air brick argon bottom-blowing.
3, three blocks of air bricks in ladle can be theoretically installed, bottom blowing is can further improve according to technical solution of the present invention
Air brick comprehensive life：
First piece, second block of air brick carried out according to above-mentioned example, second block of air brick can be according to class after using to the service life
As method block after begin to use third block air brick.
The position at packet bottom needs to install pocket block, air brick, and three pieces are installed in ladle bottom according to current actual conditions
What air brick can be achieved on.
Claims (2)
1. Argon to be to extend the method for bottom blowing monolithic devices air brick comprehensive life successively, it is characterized in that：By adjusting porous core
Slit, designing a kind of higher air brick of flow makes it ensure that one block of air brick disclosure satisfy that ladle refining requirement, in Ladle Bottom
When building by laying bricks or stones, two blocks of air bricks are built by laying bricks or stones, during onsite application, first using first block of air brick, until it reaches terminal life, will use
First block of air brick to terminal life blocks self-flowing material with corundum and blocks, and is then made with oxygen rifle by second piece of porous core is boiled
It is started to work, and first block of air brick is conventional monolithic devices air brick, and the porous core of second block of air brick is not directly exposed to
Brick cup surface, but the monolithic devices air brick for having the distance of 30mm-100mm away from brick cup upper surface and being embedded in inside brick cup, second
Block air brick can be fabricated to direct prefabrication type and two kinds packaging, and production method is as follows：
1.1 direct prefabrication types：
1.1.1 porous core is placed on inside brick cup mold, porous core is lower 30mm-100mm than brick cup at this time, needs in porous core
Microcephaly fixes an easily demoulding taper die, and taper die concentric reducer diameter difference is 5mm-10mm, and outwardly, height is or not major part
Less than brick cup upper surface, taper die must be completely covered by porous core air supply channel after being contacted with porous core, small in porous core
Head brushing a layer thickness is the paraffin of 1mm-2mm, and makes its solidification, then installs taper die, is opened after setting taper die
Begin prefabricated brick cup, and next step disposition is carried out after maintenance, form removal tool, drying；
1.1.2 sundries in the bellmouth of air brick is cleaned out, is 1mm-2mm in porous core microcephaly's external coating a layer thickness
Paraffin and make its solidification, then on bellmouth side Zi ventilative wicking surface to brick cup surface discontinuities formula brushing industry machine oil,
Brushing surface is the 40%-80% of bellmouth lateral area, is evenly distributed in strip, can also use paper slip of the thickness no more than 0.2mm, modeling
Material film, which is pasted onto on the side of bellmouth, replaces painter's industry machine oil；
1.1.3 finally perfusion and the distinguishing castable of brick cup material color, the differentiation of color can pass through oxidation in bellmouth
The addition of chromium adjusts, and completes the production after drying, it is desirable that refractoriness >=1700 DEG C of castable is perfused, 110 DEG C of bakings are for 24 hours
Under the conditions of compressive resistance and 1600 DEG C heat preservation 3h under the conditions of compressive resistance be therewith arrange in pairs or groups brick cup corresponding conditions under resistance to pressure
The 70%-90% of degree, 1600 DEG C burn after Linear change rate be 0.02%-0.35%；
It is 1.2 packaging：
Porous core is assembled with brick cup by chamotte, at this time self-assembling formation depth be 30mm-100mm bellmouth, then according to
1.1.2, the method for 1.1.3 makes.
2. according to the method described in claim 1, the pressure value of argon bottom-blowing and its adjustment when air brick own traffic and work
It is crucial, it is characterized in that：Range of flow of two blocks of air bricks in the case where normal temperature state, pressure 0.3MPa, medium are air conditions
For 30Nm3/h-65Nm3/ h, and specifically being set according to ladle size, when being on active service in ladle, the pressure of argon bottom-blowing need to be
In the range of 0.8MPa-2.2MPa by hand valve flexibly, facilitate adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810225533.8A CN108193022A (en) | 2018-03-19 | 2018-03-19 | Argon is to extend the method for bottom blowing monolithic devices air brick comprehensive life successively |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810225533.8A CN108193022A (en) | 2018-03-19 | 2018-03-19 | Argon is to extend the method for bottom blowing monolithic devices air brick comprehensive life successively |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108193022A true CN108193022A (en) | 2018-06-22 |
Family
ID=62595991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810225533.8A Pending CN108193022A (en) | 2018-03-19 | 2018-03-19 | Argon is to extend the method for bottom blowing monolithic devices air brick comprehensive life successively |
Country Status (1)
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101993969A (en) * | 2009-08-21 | 2011-03-30 | 宝山钢铁股份有限公司 | Converter bottom blowing air brick and using method thereof |
| CN203437635U (en) * | 2013-08-19 | 2014-02-19 | 浙江自立股份有限公司 | Standby ventilation brick in steel ladle |
| CN203992353U (en) * | 2014-06-23 | 2014-12-10 | 山东银山耐火材料有限公司 | Novel ladle porous core mounting structure |
| CN205874478U (en) * | 2016-05-31 | 2017-01-11 | 中钢集团洛阳耐火材料研究院有限公司 | High heat conduction air brick |
-
2018
- 2018-03-19 CN CN201810225533.8A patent/CN108193022A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101993969A (en) * | 2009-08-21 | 2011-03-30 | 宝山钢铁股份有限公司 | Converter bottom blowing air brick and using method thereof |
| CN203437635U (en) * | 2013-08-19 | 2014-02-19 | 浙江自立股份有限公司 | Standby ventilation brick in steel ladle |
| CN203992353U (en) * | 2014-06-23 | 2014-12-10 | 山东银山耐火材料有限公司 | Novel ladle porous core mounting structure |
| CN205874478U (en) * | 2016-05-31 | 2017-01-11 | 中钢集团洛阳耐火材料研究院有限公司 | High heat conduction air brick |
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Address after: 471003 China (Henan) free trade pilot area, Luoyang area, 5 Xinfeng 407, Yin Kun science and Technology Park, 6 Hua Road, Gao. Applicant after: LUOYANG XUANSHI NEW MATERIAL TECHNOLOGY Co.,Ltd. Address before: 471023 Feng Li Private Industrial Park, Luolong District, Luoyang, Henan. Applicant before: LUOYANG XUANSHI HIGH TEMPERATURE MATERIAL CO.,LTD. |
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