CN104841920B - A kind of combined type high life, inexpensive seating brick of steel ladle ventilating brick and its preparation technology - Google Patents
A kind of combined type high life, inexpensive seating brick of steel ladle ventilating brick and its preparation technology Download PDFInfo
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Abstract
The present invention relates to a kind of combined type high life, inexpensive seating brick of steel ladle ventilating brick, including brick cup body, described brick cup body includes body and lower body, upper body and lower body are respectively adopted different castable one-time cast-formings, upper body height h is 260～300mm, and upper inner body wall is along the circumferential direction transversely provided with chase equally distributed along short transverse.Combined type high life prepared by the application present invention, inexpensive seating brick of steel ladle ventilating brick cost performance are better than existing seat brick of composite permeable brick, and erosion rate reduces more than 0.5mm/ stove on year-on-year basis, and service life improves more than 10 stoves on year-on-year basis.
Description
Technical field
The present invention relates to a kind of combined type high life, inexpensive seating brick of steel ladle ventilating brick and its preparation technology, category is made steel resistance to
Fiery field of material technology.
Background technology
Ladle is the basic container of the steel-making shipment external refining such as molten steel and LF, RH, and air brick is to be blown into argon into molten steel
The ventilated element of gas, has fitted outside and two kinds of integral air brick, and brick cup of air brick is positioning outside-lined argon purging plug, is placed in ladle
Bag bottom inner lining refractory element.At present, the ladle ventilating seat brick cup life-span of prior art production is low, is impact ladle working lining
One of several key common technology difficult problems of refractory life and cost.The seating brick of steel ladle ventilating brick of prior art production is present
Problems with and deficiency：(1) top of brick cup of air brick body, bottom using identical grade castable moulding by casting, sexual valence
Than low, service life is low；(2) seating brick of steel ladle ventilating brick body is molded using two kinds of materials and machine pressure, cast twice with installing hole
Technique, complex process, production cost are high.(3) current brick cup mostly is square brick, and as square brick wall unevenness is even, can produce heat should
Power, causes brick cup partial portion shrinkage cavity, deformation, crackle, shortens brick cup service life.
Chinese patent literature CN202097397U (application number：201120136171.9) disclose a kind of composite air bricks seat
Brick, belongs to metallurgical equipment refractory material, and including top brick cup, bottom brick cup, wherein, the height outline of bottom brick cup is less than industry
The height of the air brick remnants brick core of upper regulation, when air brick comes into operation, top brick cup adopts pink fused alumina, plate corundum, zirconium
Prepared by the top grade material such as corundum, white fused alumina, Brown Alundum；Bottom brick cup is prepared using low-grade material, is all adopted with brick cup entirety
High-grade material is prepared and is compared, and production cost is greatly reduced, and the standby seat brick of composite permeable brick of the patent system has the following disadvantages：One
It is that the circumferential weld of molten steel, slag between air brick and brick cup of air brick penetrates into, and exacerbates ventilative during using and burning is washed
Brick, the erosion of brick cup of air brick, affect service life；Two is to prepare top brick cup using pink fused alumina, plate corundum, fused alumina zirconia, white
Prepared by the top grade material such as corundum, Brown Alundum, can improve its erosion-resisting characteristics, but its thermal shock resistance is poor, and crackle, fracture easily occur
Problem, shortens the seat brick of composite permeable brick service life of the invention.
Content of the invention
For the deficiencies in the prior art, the present invention provides a kind of combined type high life, inexpensive seating brick of steel ladle ventilating brick, should
The body upper part of seating brick of steel ladle ventilating brick, bottom are respectively adopted the once-combined moulding by casting of castable of different grades, simplify
Production technology so that combined type high life prepared by the present invention, inexpensive seating brick of steel ladle ventilating brick cost performance are better than existing patent
CN202097397U (application number：201120136171.9) seat brick of composite permeable brick that produces, erosion rate reduces on year-on-year basis
More than 0.5mm/ stove, service life improves more than 10 stoves on year-on-year basis.
The combined type seating brick of steel ladle ventilating brick of the present invention is than the chrome corundum seating brick of steel ladle ventilating brick that prior art is produced, raw
Produce cost and reduce by more than 30% on year-on-year basis, service life improves 4～6 stoves on year-on-year basis.
The present invention also provides a kind of combined type high life, the preparation method of inexpensive seating brick of steel ladle ventilating brick.
The present invention also provides a kind of mould for preparing combined type high life, inexpensive seating brick of steel ladle ventilating brick.
Technical scheme is as follows：
A kind of combined type high life, inexpensive seating brick of steel ladle ventilating brick, including brick cup body, brick cup body is in integrally cylinder
Shape, is provided through the installing hole of brick cup body in the middle part of brick cup body；Described brick cup body includes body and lower body, its
It is characterised by, upper body and lower body are respectively adopted different castable one-time cast-formings, and described upper body is using high-purity
Degree chromium magnesium mullite corundum castable moulding by casting, upper body height h are 260～300mm, and lower body is firm using chromium magnesium mullite
Beautiful castable moulding by casting, upper inner body wall are along the circumferential direction transversely provided with chase equally distributed along short transverse.
Currently preferred, the high-purity chromium magnesium mullite corundum castable that upper body is adopted, raw material components are as follows, are
Percentage by weight：10mm granularity<Fused white corundum 12～20%, the 5mm granularity of 15mm<The fused white corundum 5 of 10mm～
12%, 3mm granularity<Fused white corundum 8.0～15%, the 1mm granularity of 5mm<The fused white corundum 3.0～10% of 3mm,
0.088mm granularity<Fused white corundum 5.0～10%, the 0.044mm granularity of 1mm<The plate diamond spar fine powder 5.0 of 0.088mm
～10%, granularity<Plate diamond spar micro mist 3.0～8.0%, the 0.088mm granularity of 0.044mm<The fused magnesite fine powder of 0.5mm
1.0～5.0%, fused magnesite micro mist 1.0～5.0%, the 1mm granularity of granularity 0.044mm<The fused zirconia-mullite 5 of 3mm
～20%, 0.088mm granularity<The fused zirconia-mullite 3.0～10% of 1mm, electric smelting Cr2O3Micro mist 2.0～6.0%, granularity<
Electric smelting Spinel micropowder 3.0～8.0%, the α-Al of 0.044mm2O3Micro mist 1.0～5.0%, active SiO2Micro mist 2.0～
6.0%, pure calcium aluminate cement 2.0～5.0%, calcium lignosulfonate 0.03～0.15%, sodium tripolyphosphate 0.05～0.2%, heat resisting steel are fine
Dimension 0.03～0.1%.
Currently preferred, the chromium magnesium mullite corundum castable that lower body is adopted, raw material components are as follows, are weight hundred
Divide ratio：10mm granularity<Alumina corundum 15～25%, the 5mm granularity of 15mm<The alumina corundum 5.0～10% of 10mm,
3mm granularity<Alumina corundum 10～15%, the 1mm granularity of 5mm<Alumina corundum 3.0～10%, the 0.088mm of 3mm
Granularity<Alumina corundum 6.0～15%, the 0.044mm granularity of 1mm<The fused white corundum fine powder 2.0 of 0.088mm～
10%, granularity<Fused white corundum micro mist 2.0～10%, the 0.088mm granularity of 0.044mm<The fused magnesite fine powder of 0.5mm
1.0～5.0%, fused magnesite micro mist 1.0～5.0%, the 1mm granularity of granularity 0.044mm<The fused zirconia-mullite 6 of 3mm
～15%, 0.088mm granularity<The fused zirconia-mullite 1.0～5.0% of 1mm, electric smelting Cr2O3Micro mist 1.0～5.0%, granularity<
Electric smelting Spinel micropowder 1.0～5.0%, the α-Al of 0.044mm2O3Micro mist 2.0～8.0%, active SiO2Micro mist 0.5～
1.5%, pure calcium aluminate cement 2.5～5.0%, calcium lignosulfonate 0.02～0.1%, sodium tripolyphosphate 0.1～0.3%, heat-resistant steel fiber
0.01～0.05%.
Currently preferred, the high-purity chromium magnesium mullite corundum castable that upper body is adopted, raw material components are as follows, are
Percentage by weight：10mm granularity<Fused white corundum 15～18%, the 5mm granularity of 15mm<The fused white corundum 8.0 of 10mm
～10%, 3mm granularity<Fused white corundum 10～12%, the 1mm granularity of 5mm<The fused white corundum 5.0～8.0% of 3mm,
0.088mm granularity<Fused white corundum 7.0～9.0%, the 0.044mm granularity of 1mm<The plate diamond spar fine powder of 0.088mm
4.0～8.0%, granularity<Plate diamond spar micro mist 4.0～6.0%, the 0.088mm granularity of 0.044mm<The fused magnesite of 0.5mm
Fine powder 1.0～3.0%, fused magnesite micro mist 1.5～2.5%, the 1mm granularity of granularity 0.044mm<The electric smelting zirconium of 3mm is not
Carry out stone 10～15%, 0.088mm granularity<The fused zirconia-mullite 5.0～8.0% of 1mm, electric smelting Cr2O3Micro mist 3.0～
5.0%, granularity<Electric smelting Spinel micropowder 1.0～3.0%, the α-Al of 0.044mm2O3Micro mist 3.2～5.0%, active SiO2Micro-
Powder 0.8～1.2%, pure calcium aluminate cement 3.3～4.0%, calcium lignosulfonate 0.05～0.1%, sodium tripolyphosphate 0.10～0.18%, resistance to
Hot steel fibre 0.02～0.05%.
Currently preferred, the chromium magnesium mullite corundum castable that lower body is adopted, raw material components are as follows, are weight hundred
Divide ratio：10mm granularity<Alumina corundum 18～22%, the 5mm granularity of 15mm<The alumina corundum 7.0 of 10mm～
9.0%, 3mm granularity<Alumina corundum 11～13%, the 1mm granularity of 5mm<The alumina corundum 5.0～8.0% of 3mm,
0.088mm granularity<Alumina corundum 9.0～12%, the 0.044mm granularity of 1mm<The fused white corundum fine powder of 0.088mm
4.0～8.0%, granularity<Fused white corundum micro mist 4.0～8.0%, the 0.088mm granularity of 0.044mm<The electric-melting magnesium of 0.5mm
Sand fine powder 1.5～2.5%, fused magnesite micro mist 1.3～2.5%, the 1mm granularity of granularity 0.044mm<The electric smelting zirconium of 3mm
Mullite 8～12%, 0.088mm granularity<The fused zirconia-mullite 3.0～5.0% of 1mm, electric smelting Cr2O3Micro mist 1.0～
2.0%, granularity<Electric smelting Spinel micropowder 1.0～3.0%, the α-Al of 0.044mm2O3Micro mist 4.0～5.5%, active SiO2Micro-
Powder 0.8～1.2%, pure calcium aluminate cement 3.2～3.5%, calcium lignosulfonate 0.05～0.09%, sodium tripolyphosphate 0.12～0.2%, resistance to
Hot steel fibre 0.01～0.03%.
The present invention is highly preferred, and the high-purity chromium magnesium mullite corundum castable that upper body is adopted, raw material components are as follows,
All it is weight percentage：10mm granularity<Fused white corundum 15%, the 5mm granularity of 15mm<The fused white corundum of 10mm
10%, 3mm granularity<Fused white corundum 12%, the 1mm granularity of 5mm<Fused white corundum 8.0%, the 0.088mm grain of 3mm
Degree<Fused white corundum 7.0%, the 0.044mm granularity of 1mm<The plate diamond spar fine powder 8.0% of 0.088mm, granularity<0.044mm
Plate diamond spar micro mist 4.0%, 0.088mm granularity<The fused magnesite fine powder 3.0% of 0.5mm, the electricity of granularity 0.044mm
Fused magnesia micro mist 1.5%, 1mm granularity<Fused zirconia-mullite 10%, the 0.088mm granularity of 3mm<The electric smelting zirconium of 1mm does not come
Stone 8.0%, electric smelting Cr2O3Micro mist 5.0%, granularity<Electric smelting Spinel micropowder 1.0%, the α-Al of 0.044mm2O3Micro mist 3.2%,
Active SiO2Micro mist 0.8%, pure calcium aluminate cement 3.3%, calcium lignosulfonate 0.05%, sodium tripolyphosphate 0.10%, heat-resistant steel fiber
0.05%, all it is weight percentage.
The present invention is highly preferred, and the chromium magnesium mullite corundum castable that lower body is adopted, raw material components are as follows, all attach most importance to
Amount percentage：10mm granularity<Alumina corundum 18%, the 5mm granularity of 15mm<Alumina corundum 9.0%, the 3mm of 10mm
Granularity<Alumina corundum 13%, the 1mm granularity of 5mm<Alumina corundum 8.0%, the 0.088mm granularity of 3mm<1mm's
Alumina corundum 12%, 0.044mm granularity<The fused white corundum fine powder 8.0% of 0.088mm, granularity<The electric smelting of 0.044mm
White fused alumina micro mist 4.0%, 0.088mm granularity<The fused magnesite fine powder 2.5% of 0.5mm, the electric-melting magnesium of granularity 0.044mm
Sand micro mist 1.3%, 1mm granularity<Fused zirconia-mullite 8.0%, the 0.088mm granularity of 3mm<The fused zirconia-mullite of 1mm
5.0%, electric smelting Cr2O3Micro mist 2.0%, granularity<Electric smelting Spinel micropowder 1.0%, the α-Al of 0.044mm2O3Micro mist 4.0%, living
Property SiO2Micro mist 0.8%, pure calcium aluminate cement 3.2%, calcium lignosulfonate 0.05%, sodium tripolyphosphate 0.12%, heat-resistant steel fiber
0.03%, all it is weight percentage.
The fused white corundum is produced with commercial alumina electric smelting, its Al2O3>=98.1%, SiO2≤ 0.5%, Fe2O3
≤ 0.3%, TiO2≤0.2%, CaO≤0.29%, MgO≤0.14%, K2O≤0.05%, Na2O≤0.41%, bulk density
≥3.80g/cm3, apparent porosity≤4.0%.
The plate diamond spar, is produced using electric smelting method method with commercial alumina, and alumina grain reaches completely to be tied again
Brilliant α-Al2O3, its Al2O3>=99.3%, SiO2≤ 0.18%, Fe2O3≤ 0.1%, Na2O≤0.28%, bulk density >=
3.76g/cm3, apparent porosity≤2.6%.
The fused magnesite is BMS 97 from the trade mark.
The fused zirconia-mullite, its Al2O3Content is 42～47%, SiO2Content is 16～20%, ZrO2Content is 35
～40%, Fe2O3, CaO and other impurities content be 0.5～4.0%, bulk density >=3.60g/cm3, apparent porosity≤
3.0%.
The electric smelting Cr2O3Micro mist, light green to the tiny six sides crystallization of bottle green, Cr2O3>=99%, 2266 ± 25 DEG C of fusing point,
Moisture≤0.2%, 320 screen residue≤0.5%.
The electric smelting spinelle, its content of MgO are 28.4～36.6%, Al2O3Content is 52.9～70.4%, SiO2Contain
Measure as 0.3～3.33%, Fe2O3Content is 0.3～1.89%, and CaO content is 0.4～0.89%, TiO2Content be 2.10～
2.52%, bulk density >=3.17g/cm3, apparent porosity≤6.9%.
The activity SiO2Micro mist, is the byproduct for producing metallic silicon or Antaciron, SiO in silicon ash2Content >=92%,
Granularity be less than 5 μm, and granularity less than 2 μm account for 80～85%.
α-the Al2O3Micro mist, is that commercial alumina calcining is made, its Al2O3Micro mist ＞ 99%, granularity are less than 2 μm.
The pure calcium aluminate cement, its trade mark are CA-70.
The calcium lignosulfonate, is a kind of multicomponent high molecular polymer anion surfactant, and its content of lignin is 55-
65%, water-insoluble is 0.5-1.5%, and reduzate is 5-13%, pH value：4.5–7.
The heat-resistant steel fiber, is to be produced with the heat resisting steel of the alloying elements such as nickel containing chromium, is 310 from the trade mark.
The alumina-based alundum, is produced with Bauxite Sintering, its Al2O3>=98.7%, SiO2≤ 0.01%,
Fe2O3≤ 0.12%, TiO2≤ 0.01%, CaO≤0.02%, MgO≤0.02%, K2O≤0.02%, Na2O≤0.05%, body
Product density >=3.67g/cm3, apparent porosity≤1.8%.
Currently preferred, the outer diameter D of the brick cup body is 360～380mm, the overall height H of brick cup body is 420～
470mm.
The average wall thickness of the design brick cup body of the present invention is 50～100mm.
Currently preferred, the installing hole is butt truncated cone-shaped, and truncated cone-shaped upper port diameter d1 is 125～150mm, circle
Platform shape lower port diameter d2 is 195～220mm.
Currently preferred, the chase in upper inner body wall is preferably 3～5, and the depth of chase is consistent with width, is 6
～10mm.
Through numerous experiments, present inventors have unexpectedly found that：(1) brick cup body is generally cylindrical, and cross section is circle, upper
Body adopts high-purity chromium magnesium mullite corundum castable moulding by casting, and height h is 250～300mm, and lower body adopts common chromium magnesium
Mullite corundum castable moulding by casting, foursquare ladle pocket block sheet of the cross section with diameter of a circle as the length of side on year-on-year basis
Body, castable consumption reduce 21.5% on year-on-year basis, reduce production cost so that the combined type seating brick of steel ladle ventilating brick of the present invention,
Its cost performance is higher than the seating brick of steel ladle ventilating brick of prior art production；The design of the present invention be based on ladle seating brick of steel ladle ventilating brick
The different use condition in body upper part, bottom and performance require, body upper part directly with high-temperature molten steel, slag contacts,
Ask its antiscour, erosion-resisting characteristics strong, and body lower part not directly with high-temperature molten steel, slag contacts, its antiscour, corrosion resistance
Can suitably reduce, and height h is 220～270mm, this is height to be corroded based on high-temperature molten steel, slag to the maximum of body upper part
Degree, is determined after the test of laboratory resistance to slag and live application verification；Upper inner body wall circumferencial direction arranges some
Chase, prevent air brick use and burn wash during circumferential weld between air brick and brick cup of air brick of molten steel, slag penetrate into
The abnormal erosion of the air brick for causing and brick cup of air brick and wear steel accident.Cylindrical brick cup body wall is thick uniform, dries preparing
During baking and pouring steel use, temperature is evenly distributed along wall, reduces thermal stress, it is to avoid shrinkage cavity, deformation, crackle, while extending
Brick cup service life.
(2) on combined type high life, inexpensive seating brick of steel ladle ventilating brick, body adopts high-purity chromium magnesium mullite corundum
During castable and lower body are constituted using the material of common chromium magnesium mullite corundum castable, material critical granularity (i.e. maximum grain
Degree) 15mm is increased to by the 8mm of prior art, while with addition of appropriate Cr2O3Micro mist, this be based on substantial amounts of experiment and grind
Study carefully determination, critical granularity increases to 15mm by 8mm, castable can be improved to high-temperature molten steel, the erosion-resisting characteristics of slag, and join
Plus Cr2O3Al in micro mist and matrix2O3Reaction forms aluminium chromium solid solution, forms limit solid solution with mullite, miscellaneous with other
Qualitative response forms full-bodied phase containing chromium glass, can prevent the infiltration of slag, improves its resistance to slag, reduces its erosion rate, with
When cause the deformity of corundum lattice and activated, promote the continuous sintering between corundum and between powder, enhance remnants
Rupture strength and remaining compressive resistance, while improve its thermal shock resistance.
(3) by substantial amounts of experiment and research, on combined type high life, inexpensive seating brick of steel ladle ventilating brick, body is adopted
High-purity chromium magnesium mullite corundum castable and lower body are using in the material composition of common chromium magnesium mullite corundum castable, electric
Fused magnesia all adopts 0.088mm granularity<Two kinds of granularities of thickness of 0.5mm and granularity 0.044mm are added, and can control electric smelting
MgO in the magnesia and Al in matrix2O3Reaction generates the speed of spinelle so that the staggered growth of spinel crystal, matrix are fine and close
Change so that after the burning of castable, line change is gradually increased, and improves its thermal shock resistance, solves prior art only with single magnesia
Micro mist and Al2O3Fast reaction, cause crackle and brick cup of air brick breakage problem that the volume rapid expanding of castable causes.
For preparing the mould of above-mentioned combined type high life, inexpensive seating brick of steel ladle ventilating brick, including core rod, fixed frame,
Framed and base plate, core rod are located at framed inside center, and core rod and framed bottom are fixed on base plate, and fixed frame is located at framed outer
Week, fixed frame are bolted on together by four blocks of removable flat board steel plates, it is characterised in that in the external wall of upper portion of core rod
Surface is along the circumferential direction horizontally arranged with chase shaping ring, and described chase shaping ring is 3-5 bar, in core rod upper height direction
On be evenly distributed up and down, the thickness of chase shaping ring is consistent with the width of longitudinal section, is 6～10mm, preferred chase shaping ring
For ring shape rubber band.
The combined type high life, the preparation method of inexpensive seating brick of steel ladle ventilating brick, first pour and pour down body, afterwards in cast
Body, as follows including step：
1) mould inner wall for preparing brick cup of air brick is uniformly brushed after oil, is placed on shake table；
2) after the component proportion dispensing according to the chromium magnesium mullite corundum castable of lower body, first dry-mixed 5～10 minutes, mix
After closing uniformly, the water of addition material gross weight 5.0～5.5%, wet mixing 5～10 minutes, mix, obtain lower body pug；
3) lower body pug is added in mould, vibrates in charging, until the height of upper body pug is (H-h) mm；
4) after the component proportion dispensing according to the high-purity chromium magnesium mullite corundum castable of upper body, first dry-mixed 5～10
Minute, after mixing, the water of addition material gross weight 4.5～5.0%, wet mixing 5～10 minutes, mix, obtain body mud
Material；
5) lower body pug is shakeout, upper body pug is added in mould before the solidification of lower body pug immediately, Bian Jia
The vibration of material side, until pug is maintained an equal level with mould top edge, continues to be vibrated to surface compact bleeding；
6) after conserving 2～3 days under conditions of temperature 17-25 DEG C, humidity are more than 90%, the demoulding, brick cup of air brick is obtained
Body green compact；
7) brick cup of air brick body green compact are toasted, then natural cooling, ladle pocket block body finished product.
Currently preferred, brick cup of air brick body green compact are toasted and following flow process is pressed in cooling；A, from 0～150 DEG C with 10
DEG C/intensification of h programming rate, it is warming up to 135～150 DEG C；B, 135～150 DEG C be incubated, 12～16h of temperature retention time；C, again from
135～150 DEG C are heated up with 10 DEG C/h programming rate, are warming up to 235～250 DEG C；D, 235～250 DEG C be incubated, temperature retention time 8
～12h；E, again from 235～250 DEG C with 15 DEG C/h programming rate heat up, be warming up to 575～600 DEG C, f, 575～600 DEG C protect
After 8～12h of temperature, truce natural cooling, 12～24h of cool time, combined type seating brick of steel ladle ventilating brick are prepared and are completed.
The invention has the beneficial effects as follows：
(1) the combined type high life of the present invention, body adopts high-purity chromium magnesium on inexpensive seating brick of steel ladle ventilating brick body
Mullite corundum castable moulding by casting, height h are 250～300mm, and lower body adopts common chromium magnesium mullite corundum castable
Moulding by casting, brick cup body integrally in cylinder, the circumferentially disposed some chases of upper inner body wall, achieve unforeseeable skill
Art effect：So that the cost performance of the combined type seating brick of steel ladle ventilating brick of the present invention is higher than (the application of existing patent CN202097397U
Number：201120136171.9) seat brick of composite permeable brick for producing, production cost are suitable, but seat brick of composite permeable brick service life
10 stoves more than are improved on year-on-year basis.
(2) on combined type high life, inexpensive seating brick of steel ladle ventilating brick body, body adopts high-purity chromium magnesium mullite
, using in the material composition of common chromium magnesium mullite corundum castable, material critical granularity is (i.e. most for corundum castable and lower body
Big granularity) 15mm is increased to by the 8mm of prior art, while with addition of appropriate in the material composition of above two castable
Cr2O3Micro mist, achieves unforeseeable technique effect：So that the resistance to slag of the combined type seating brick of steel ladle ventilating brick of the present invention, heat
Shake stability is superior to existing patent CN202097397U (application number：201120136171.9) the composite air bricks seat that produces
Brick, erosion rate reduce more than 0.5mm/ stove on year-on-year basis, and service life improves more than 10 stoves on year-on-year basis.
(3) on combined type high life, inexpensive seating brick of steel ladle ventilating brick body, body adopts high-purity chromium magnesium mullite
, using in the material composition of common chromium magnesium mullite corundum castable, fused magnesite is all adopted for corundum castable and lower body
0.088mm granularity<Two kinds of granularities of thickness of 0.5mm and granularity 0.044mm are added, and achieve unforeseeable technology effect
Really：So that the quality stability of the combined type seating brick of steel ladle ventilating brick of the present invention is better than (the application of existing patent CN202097397U
Number：201120136171.9) seat brick of composite permeable brick that produces, brick cup of air brick crackle and breakage problem obtain essential solution.
(4) the combined type high life of the present invention, after inexpensive seating brick of steel ladle ventilating brick application, erosion rate reduces, thus
Slow down the direct erosion of the air brick of high-temperature molten steel, slag to being positioned in brick cup, wash away, extend matching used ventilative
The service life of brick, the 1st piece of air brick life-span improve more than 5 stoves on year-on-year basis, and the 2nd piece of air brick life-span improves more than 7 stoves on year-on-year basis.
Description of the drawings
Fig. 1 is the combined type high life of the present invention, the main structure diagram of inexpensive seating brick of steel ladle ventilating brick；
Fig. 2 is the combined type high life of the present invention, the overlooking the structure diagram of inexpensive seating brick of steel ladle ventilating brick；
Fig. 3 is the present invention for preparing the mould structure schematic diagram of combined type high life, inexpensive seating brick of steel ladle ventilating brick.
In figure：The upper body of 1-；Body under 2-；3- installing hole；4- chase；5- ring shape rubber band；6- core rod；7- is fixed
Frame；8- is framed；9- bolt；10- base plate.
Specific embodiment
Following examples are that the preparation technology for inventing is further illustrated, but the invention is not limited in this.
Embodiment 1
A kind of combined type high life, inexpensive seating brick of steel ladle ventilating brick, structure as shown in Figure 1, 2, including brick cup body, seat
Brick body is provided through the installing hole 3 of brick cup body integrally in cylinder in the middle part of brick cup body, dress hole is butt truncated cone-shaped,
It is 195mm that truncated cone-shaped upper port diameter d1 is 125mm, truncated cone-shaped lower port diameter d2.Brick cup body includes body 1 and lower
Body 2, upper body 1 and lower body 2 are respectively adopted different castable one-time cast-formings, and upper body 1 adopts high-purity chromium magnesium not
Carry out stone corundum castable moulding by casting, 1 height h of upper body is 300mm, lower body 2 is poured using chromium magnesium mullite corundum castable
Injection forming, upper inner body wall are along the circumferential direction transversely provided with chase 4 equally distributed along short transverse, and chase 4 is 5, chase 4
Depth consistent with width, be 6mm.
The outer diameter D of brick cup body is 360mm, and the overall height H of brick cup body is 470mm.
The high-purity chromium magnesium mullite corundum castable that upper body is adopted, raw material components are as follows, are all weight percentage：
10mm granularity<Fused white corundum 15%, the 5mm granularity of 15mm<Fused white corundum 10%, the 3mm granularity of 10mm<5mm
Fused white corundum 12%, 1mm granularity<Fused white corundum 8.0%, the 0.088mm granularity of 3mm<The fused white corundum of 1mm
7.0%, 0.044mm granularity<The plate diamond spar fine powder 8.0% of 0.088mm, granularity<The plate diamond spar micro mist of 0.044mm
4.0%, 0.088mm granularity<The fused magnesite fine powder 3.0% of 0.5mm, the fused magnesite micro mist of granularity 0.044mm
1.5%, 1mm granularity<Fused zirconia-mullite 10%, the 0.088mm granularity of 3mm<The fused zirconia-mullite 8.0% of 1mm, electricity
Molten Cr2O3Micro mist 5.0%, granularity<Electric smelting Spinel micropowder 1.0%, the α-Al of 0.044mm2O3Micro mist 3.2%, active SiO2Micro-
Powder 0.8%, pure calcium aluminate cement 3.3%, calcium lignosulfonate 0.05%, sodium tripolyphosphate 0.10%, heat-resistant steel fiber 0.05%.
The chromium magnesium mullite corundum castable that lower body is adopted, raw material components are as follows, are all weight percentage：10mm grain
Degree<Alumina corundum 18%, the 5mm granularity of 15mm<Alumina corundum 9.0%, the 3mm granularity of 10mm<The alumina-based of 5mm
Corundum 13%, 1mm granularity<Alumina corundum 8.0%, the 0.088mm granularity of 3mm<The alumina corundum 12% of 1mm,
0.044mm granularity<The fused white corundum fine powder 8.0% of 0.088mm, granularity<The fused white corundum micro mist 4.0% of 0.044mm,
0.088mm granularity<The fused magnesite fine powder 2.5% of 0.5mm, fused magnesite micro mist 1.3%, the 1mm of granularity 0.044mm
Granularity<Fused zirconia-mullite 8.0%, the 0.088mm granularity of 3mm<The fused zirconia-mullite 5.0% of 1mm, electric smelting Cr2O3Micro mist
2.0%, granularity<Electric smelting Spinel micropowder 1.0%, the α-Al of 0.044mm2O3Micro mist 4.0%, active SiO2Micro mist 0.8% is pure
Aluminous cement 3.2%, calcium lignosulfonate 0.05%, sodium tripolyphosphate 0.12%, heat-resistant steel fiber 0.03%.
The fused white corundum is produced with commercial alumina electric smelting, its Al2O3Content is 98.1%, SiO2Content is
0.5%, Fe2O3Content is 0.3%, TiO2Content is 0.2%, and CaO content is 0.2%, and content of MgO is 0.14%, K2O content
For 0.05%, Na2O content is 0.41%, and bulk density is 3.81g/cm3, apparent porosity is 3.5%.
The plate diamond spar, is produced using electric smelting method method with commercial alumina, and alumina grain reaches completely to be tied again
Brilliant α-Al2O3, its Al2O3Content is 99.3%, SiO2Content is 0.18%, Fe2O3Content is 0.1%, Na2O content is
0.24%, bulk density is 3.76g/cm3, apparent porosity is 2.6%.
The fused zirconia-mullite, its Al2O3Content is 47%, SiO2Content is 16%, ZrO2Content is 35%, Fe2O3、
CaO and other impurities content is 1.0%, and bulk density is 3.60g/cm3, apparent porosity is 3.0%.
The electric smelting Cr2O3Micro mist, light green to the tiny six sides crystallization of bottle green, Cr2O3Content is 99.2%, fusing point 2266
± 25 DEG C, moisture is 0.2%, and 320 screen residues are 0.5%.
The electric smelting spinelle, its content of MgO are 36.6%, Al2O3Content is 52.9%, SiO2Content is 3.33%,
Fe2O3Content is 1.89%, and CaO content is 0.89%, TiO2Content is 2.52%, and bulk density is 3.20g/cm3, apparent pore
Rate is 6.9%.
The activity SiO2Micro mist, is the byproduct for producing metallic silicon or Antaciron, SiO in silicon ash2Content is 94%,
Granularity be less than 5 μm, and granularity less than 2 μm account for 85%.
α-the Al2O3Micro mist, is that commercial alumina calcining is made, its Al2O3Micro mist 99.1%, granularity are less than 2 μm.
The calcium lignosulfonate, is a kind of multicomponent high molecular polymer anion surfactant, and its content of lignin is 55%,
Water-insoluble is 0.5%, and reduzate is 13%, and pH value is 4.5.
The heat-resistant steel fiber, is to be produced with the heat resisting steel of the alloying elements such as nickel containing chromium, is 310 from the trade mark.
The alumina-based alundum, is produced with Bauxite Sintering, its Al2O3Content is 98.7%, SiO2Content is
0.01%, Fe2O3Content is 0.12%, TiO2Content is 0.01%, and CaO content is 0.02%, and content of MgO is 0.02%, K2O
Content is 0.02%, Na2O content is 0.05%, and bulk density is 3.67g/cm3, apparent porosity is 1.8%.
Preparation method：
Combined type high life, the preparation method of inexpensive seating brick of steel ladle ventilating brick, first pour and pour down the common chromium magnesium of body and do not come
Stone corundum castable, pours into a mould upper body high-purity chromium magnesium mullite corundum castable afterwards, as follows including step：
1) mould inner wall for preparing brick cup of air brick is uniformly brushed after oil, is placed on shake table；
2) after the component proportion dispensing according to the chromium magnesium mullite corundum castable of lower body, first dry-mixed 5 minutes, mixing is all
After even, the water of addition material gross weight 5.5%, wet mixing 10 minutes, mix, obtain lower body pug；
3) lower body pug is added in mould, vibrates in charging, until the height of upper body pug is (H-h)
170mm；
It is 4) after the component proportion dispensing according to the high-purity chromium magnesium mullite corundum castable of upper body, first dry-mixed 5 minutes,
After mixing, the water of addition material gross weight 5.0%, wet mixing 10 minutes, mix, obtain body pug；
5) lower body pug is shakeout, upper body pug is added in mould before the solidification of lower body pug immediately, Bian Jia
The vibration of material side, until pug is maintained an equal level with mould top edge, continues to be vibrated to surface compact bleeding；
6) after conserving 3 days under conditions of 20 DEG C of temperature, humidity are more than 90%, the demoulding, the life of brick cup of air brick body is obtained
Base；
7) brick cup of air brick body green compact are toasted, then natural cooling, ladle pocket block body finished product.
Currently preferred, brick cup of air brick body green compact are toasted and following flow process is pressed in cooling；A, from 20 DEG C with 10 DEG C/h
Programming rate heats up, and is warming up to 135 DEG C；B, 135 DEG C be incubated, temperature retention time 12h；C, again from 135 DEG C with 10 DEG C/h heat up speed
Degree heats up, and is warming up to 235 DEG C；D, 235 DEG C be incubated, temperature retention time 12h；E, again from 235 DEG C with 15 DEG C/h programming rate heat up,
Be warming up to 575 DEG C, f, 575 DEG C insulation 12h after, truce natural cooling, cool time 24h, combined type seating brick of steel ladle ventilating brick
Preparation is completed.
Embodiment 2
A kind of combined type high life, inexpensive seating brick of steel ladle ventilating brick, with embodiment 1, difference is：
It is 220mm that truncated cone-shaped upper port diameter d1 is 150mm, truncated cone-shaped lower port diameter d2.Brick cup body includes
Body 1 and lower body 2,1 height h of upper body are 260mm, and upper inner body wall is along the circumferential direction transversely provided with uniformly divides along short transverse
The chase 4 of cloth, chase 4 are 3, and the depth of chase 4 is consistent with width, is 10mm.
The high-purity chromium magnesium mullite corundum castable that upper body is adopted, raw material components are as follows, are all weight percentage：
10mm granularity<Fused white corundum 18%, the 5mm granularity of 15mm<Fused white corundum 8.0%, the 3mm granularity of 10mm<5mm
Fused white corundum 10%, 1mm granularity<Fused white corundum 5.0%, the 0.088mm granularity of 3mm<The fused white corundum of 1mm
9.0%, 0.044mm granularity<The plate diamond spar fine powder 4.0% of 0.088mm, granularity<The plate diamond spar micro mist of 0.044mm
6.0%, 0.088mm granularity<The fused magnesite fine powder 1.0% of 0.5mm, the fused magnesite micro mist of granularity 0.044mm
2.5%, 1mm granularity<Fused zirconia-mullite 15%, the 0.088mm granularity of 3mm<The fused zirconia-mullite 5.0% of 1mm, electricity
Molten Cr2O3Micro mist 3.0%, granularity<Electric smelting Spinel micropowder 3.0%, the α-Al of 0.044mm2O3Micro mist 5.0%, active SiO2Micro-
Powder 1.2%, pure calcium aluminate cement 4.0%, calcium lignosulfonate 0.1%, sodium tripolyphosphate 0.18%, heat-resistant steel fiber 0.02%, all attach most importance to
Amount percentage.
The common chromium magnesium mullite corundum castable for combined type seating brick of steel ladle ventilating brick body lower part (2), presses
Percentage by weight is made up of materials described below：10mm granularity<Alumina corundum 22%, the 5mm granularity of 15mm<The alumina of 10mm
Corundum 7.0%, 3mm granularity<Alumina corundum 11%, the 1mm granularity of 5mm<The alumina corundum 5.0% of 3mm,
0.088mm granularity<Alumina corundum 9.0%, the 0.044mm granularity of 1mm<The fused white corundum fine powder of 0.088mm
4.0%, granularity<Fused white corundum micro mist 8.0%, the 0.088mm granularity of 0.044mm<The fused magnesite fine powder of 0.5mm
1.5%, fused magnesite micro mist 2.5%, the 1mm granularity of granularity 0.044mm<The fused zirconia-mullite 12% of 3mm,
0.088mm granularity<The fused zirconia-mullite 3.0% of 1mm, electric smelting Cr2O3Micro mist 1.5%, granularity<The electric smelting point of 0.044mm is brilliant
Stone micro mist 3.0%, α-Al2O3Micro mist 5.5%, active SiO2Micro mist 1.2%, pure calcium aluminate cement 3.5%, calcium lignosulfonate 0.09%, three
Polyphosphate sodium 0.2%, heat-resistant steel fiber 0.01%, all it is weight percentage.
The electric smelting spinelle, its content of MgO are 28.4%, Al2O3Content is 70.4%, SiO2Content is 0.0%,
Fe2O3Content is 0.5%, and CaO content is 0.40%, TiO2Content is 0.4%, and bulk density is 3.17g/cm3, apparent porosity
For 1.9%.
The fused zirconia-mullite, its Al2O3Content is 41%, SiO2Content is 19%, ZrO2Content is 39%, Fe2O3、
CaO and other impurities content is 1.0%, and bulk density is 3.66g/cm3, apparent porosity is 2.7%.
Preparation method：
Combined type high life, the preparation method of inexpensive seating brick of steel ladle ventilating brick, first pour and pour down the common chromium magnesium of body and do not come
Stone corundum castable, pours into a mould upper body high-purity chromium magnesium mullite corundum castable afterwards, as follows including step：
1) mould inner wall for preparing brick cup of air brick is uniformly brushed after oil, is placed on shake table；
2) after the component proportion dispensing according to the chromium magnesium mullite corundum castable of lower body, first dry-mixed 10 minutes, mixing
After uniform, the water of addition material gross weight 5.0%, wet mixing 5 minutes, mix, obtain lower body pug；
3) lower body pug is added in mould, vibrates in charging, until the height of upper body pug is (H-h)
160mm；
4) after the component proportion dispensing according to the high-purity chromium magnesium mullite corundum castable of upper body, first dry-mixed 10 points
Clock, after mixing, the water of addition material gross weight 4.5%, wet mixing 5 minutes, mix, obtain body pug；
5) lower body pug is shakeout, upper body pug is added in mould before the solidification of lower body pug immediately, Bian Jia
The vibration of material side, until pug is maintained an equal level with mould top edge, continues to be vibrated to surface compact bleeding；
6) after conserving 3 days under conditions of 17 DEG C of temperature, humidity are more than 90%, the demoulding, the life of brick cup of air brick body is obtained
Base；
7) brick cup of air brick body green compact are toasted, then natural cooling, ladle pocket block body finished product.
Currently preferred, brick cup of air brick body green compact are toasted and following flow process is pressed in cooling；A, from 25 DEG C with 10 DEG C/h
Programming rate heats up, and is warming up to 150 DEG C；B, 150 DEG C be incubated, temperature retention time 16h；C, again from 150 DEG C with 10 DEG C/h heat up speed
Degree heats up, and is warming up to 250 DEG C；D, 250 DEG C be incubated, temperature retention time 8h；E, again from 250 DEG C with 15 DEG C/h programming rate heat up,
Be warming up to 600 DEG C, f, 600 DEG C insulation 8h after, truce natural cooling, cool time 12h, combined type seating brick of steel ladle ventilating brick system
Standby complete.
Embodiment 3
A kind of combined type high life, inexpensive seating brick of steel ladle ventilating brick, with embodiment 1, difference is：
It is 205mm that truncated cone-shaped upper port diameter d1 is 135mm, truncated cone-shaped lower port diameter d2.Brick cup body includes
Body 1 and lower body 2,1 height h of upper body are 270mm, and upper inner body wall is along the circumferential direction transversely provided with uniformly divides along short transverse
The chase 4 of cloth, chase 4 are 4, and the depth of chase 4 is consistent with width, is 8mm.
The high-purity chromium magnesium mullite corundum castable that upper body is adopted, raw material components are as follows, are all weight percentage：
10mm granularity<Fused white corundum 17%, the 5mm granularity of 15mm<Fused white corundum 9.0%, the 3mm granularity of 10mm<5mm
Fused white corundum 11%, 1mm granularity<Fused white corundum 6.0%, the 0.088mm granularity of 3mm<The fused white corundum of 1mm
8.0%, 0.044mm granularity<The plate diamond spar fine powder 6.0% of 0.088mm, granularity<The plate diamond spar micro mist of 0.044mm
5.0%, 0.088mm granularity<The fused magnesite fine powder 2.0% of 0.5mm, the fused magnesite micro mist of granularity 0.044mm
2.0%, 1mm granularity<Fused zirconia-mullite 13%, the 0.088mm granularity of 3mm<The fused zirconia-mullite 6.0% of 1mm, electricity
Molten Cr2O3Micro mist 4.0%, granularity<Electric smelting Spinel micropowder 2.0%, the α-Al of 0.044mm2O3Micro mist 4.0%, active SiO2Micro-
Powder 1.0%, pure calcium aluminate cement 3.75%, calcium lignosulfonate 0.07%, sodium tripolyphosphate 0.15%, heat-resistant steel fiber 0.03%, it is
Percentage by weight.
The chromium magnesium mullite corundum castable that lower body is adopted, raw material components are as follows, are all weight percentage：10mm grain
Degree<Alumina corundum 20%, the 5mm granularity of 15mm<Alumina corundum 8.0%, the 3mm granularity of 10mm<The alumina-based of 5mm
Corundum 12%, 1mm granularity<Alumina corundum 6.0%, the 0.088mm granularity of 3mm<The alumina corundum 11% of 1mm,
0.044mm granularity<The fused white corundum fine powder 6.0% of 0.088mm, granularity<The fused white corundum micro mist 7.0% of 0.044mm,
0.088mm granularity<The fused magnesite fine powder 2.0% of 0.5mm, fused magnesite micro mist 2.0%, the 1mm of granularity 0.044mm
Granularity<Fused zirconia-mullite 10%, the 0.088mm granularity of 3mm<The fused zirconia-mullite 4.0% of 1mm, electric smelting Cr2O3Micro mist
1.0%, granularity<Electric smelting Spinel micropowder 2.0%, the α-Al of 0.044mm2O3Micro mist 4.4%, active SiO2Micro mist 1.0% is pure
Aluminous cement 3.35%, calcium lignosulfonate 0.08%, sodium tripolyphosphate 0.15%, heat-resistant steel fiber 0.02%, all it is weight percentage.
Preparation method：
Combined type high life, the preparation method of inexpensive seating brick of steel ladle ventilating brick, first pour and pour down the common chromium magnesium of body and do not come
Stone corundum castable, pours into a mould upper body high-purity chromium magnesium mullite corundum castable afterwards, as follows including step：
1) mould inner wall for preparing brick cup of air brick is uniformly brushed after oil, is placed on shake table；
2) after the component proportion dispensing according to the chromium magnesium mullite corundum castable of lower body, first dry-mixed 8 minutes, mixing is all
After even, the water of addition material gross weight 5.2%, wet mixing 7 minutes, mix, obtain lower body pug；
3) lower body pug is added in mould, vibrates in charging, until the height of upper body pug is (H-h)
180mm；
It is 4) after the component proportion dispensing according to the high-purity chromium magnesium mullite corundum castable of upper body, first dry-mixed 7 minutes,
After mixing, the water of addition material gross weight 4.7%, wet mixing 8 minutes, mix, obtain body pug；
5) lower body pug is shakeout, upper body pug is added in mould before the solidification of lower body pug immediately, Bian Jia
The vibration of material side, until pug is maintained an equal level with mould top edge, continues to be vibrated to surface compact bleeding；
6) after conserving 2 days under conditions of 23 DEG C of temperature, humidity are more than 90%, the demoulding, the life of brick cup of air brick body is obtained
Base；
7) brick cup of air brick body green compact are toasted, then natural cooling, ladle pocket block body finished product.
Currently preferred, brick cup of air brick body green compact are toasted and following flow process is pressed in cooling；A, from 25 DEG C with 10 DEG C/h
Programming rate heats up, and is warming up to 135 DEG C；B, 135 DEG C be incubated, temperature retention time 16h；C, again from 135 DEG C with 10 DEG C/h heat up speed
Degree heats up, and is warming up to 250 DEG C；D, 250 DEG C be incubated, temperature retention time 10h；E, again from 250 DEG C with 15 DEG C/h programming rate heat up,
Be warming up to 585 DEG C, f, 585 DEG C insulation 10h after, truce natural cooling, cool time 16h, combined type seating brick of steel ladle ventilating brick
Preparation is completed.
Embodiment 4
For preparing the mould of the brick cup of air brick described in embodiment 1, structure is as shown in figure 3, including core rod 6, fixed frame
7th, framed 8 and base plate 10, core rod 6 is located at framed 8 inside center, and core rod 6 and framed 8 bottom are fixed on base plate 10, fixing
Frame 7 is located at framed 8 periphery, and fixed frame 8 is fixed together by bolt 9 by four blocks of removable flat board steel plates, in the upper of core rod 6
Portion's outer wall surface is along the circumferential direction horizontally arranged with 5 chase shaping rings, and chase shaping ring is ring shape rubber band 5, in core rod 6
Upper height is evenly distributed on direction up and down, and the thickness of ring shape rubber band 5 is consistent with the width of longitudinal section, is 6mm.
Embodiment 5
For preparing the mould of the brick cup of air brick described in embodiment 2, with the mould of brick cup of air brick described in embodiment 4
Difference is：
3 chase shaping rings are along the circumferential direction horizontally arranged with the external wall of upper portion surface of core rod 6, chase shaping ring is circle
Cast rubber band 5, is evenly distributed on 6 upper height direction of core rod up and down, the thickness of ring shape rubber band 5 and the width of longitudinal section
Degree is consistent, is 10mm.
Embodiment 6
For preparing the mould of the brick cup of air brick described in embodiment 3, with the mould of brick cup of air brick described in embodiment 4
Difference is：
4 chase shaping rings are along the circumferential direction horizontally arranged with the external wall of upper portion surface of core rod 6, chase shaping ring is circle
Cast rubber band 5, is evenly distributed on 6 upper height direction of core rod up and down, the thickness of ring shape rubber band 5 and the width of longitudinal section
Degree is consistent, is 8mm.
Comparative example：Chinese patent literature CN202097397U (application number：201120136171.9) a kind of composite ventilating
Brick brick cup, including top brick cup, bottom brick cup, wherein, top brick cup is prepared using high-grade material completely, and bottom brick cup is using low
Prepared by shelves material.
Embodiment of the present invention 1-3 and comparative example CN202097397U (application number：201120136171.9) one kind be combined
The production cost of brick cup of air brick and service condition contrast on 130tLF ladle, as shown in table 1 below：
Table 1
By the Data Comparison in upper table 1, the combined type high life for applying the present invention to prepare, inexpensive air brick of steel ladle seat
Brick cost performance is better than existing patent CN202097397U (application number：201120136171.9) seat brick of composite permeable brick that produces,
Quite, erosion rate reduces more than 0.5mm/ stove to production cost on year-on-year basis, and service life improves more than 10 stoves on year-on-year basis, with air brick seat
The brick matching used 1st piece of air brick life-span improves more than 5 stoves on year-on-year basis, and the 2nd piece of air brick life-span improves more than 7 stoves on year-on-year basis.
Claims (8)
1. a kind of combined type high life, inexpensive seating brick of steel ladle ventilating brick, including brick cup body, brick cup body is in integrally cylinder
Shape, is provided through the installing hole of brick cup body in the middle part of brick cup body, it is characterised in that described brick cup body includes body
With lower body, it is characterised in that upper body and lower body are respectively adopted different castable one-time cast-formings, described upper
Body adopts high-purity chromium magnesium mullite corundum castable moulding by casting, and upper body height h is 260～300mm, and lower body adopts chromium
Magnesium mullite corundum castable moulding by casting, upper inner body wall is along the circumferential direction transversely provided with equally distributed recessed along short transverse
Ditch；The high-purity chromium magnesium mullite corundum castable that upper body is adopted, raw material components are as follows, are all weight percentage：10mm≦
Granularity<Fused white corundum 12 ~ 20%, the 5mm granularity of 15mm<Fused white corundum 5 ~ 12%, the 3mm granularity of 10mm<The electricity of 5mm
Molten white fused alumina 8.0 ~ 15%, 1mm granularity<Fused white corundum 3.0 ~ 10%, the 0.088mm granularity of 3mm<The electric smelting of 1mm is firm in vain
Jade 5.0 ~ 10%, 0.044mm granularity<The plate diamond spar fine powder 5.0 ~ 10% of 0.088mm, granularity<The plate diamond spar of 0.044mm is micro-
Powder 3.0 ~ 8.0%, 0.088mm granularity<The fused magnesite fine powder 1.0 ~ 5.0% of 0.5mm, the fused magnesite of granularity 0.044mm
Micro mist 1.0 ~ 5.0%, 1mm granularity<Fused zirconia-mullite 5 ~ 20%, the 0.088mm granularity of 3mm<The fused zirconia-mullite of 1mm
3.0 ~ 10%, electric smelting Cr2O3Micro mist 2.0 ~ 6.0%, granularity<Electric smelting Spinel micropowder 3.0 ~ 8.0%, the α-Al of 0.044mm2O3Micro mist
1.0 ~ 5.0%, active SiO2Micro mist 2.0 ~ 6.0%, pure calcium aluminate cement 2.0 ~ 5.0%, calcium lignosulfonate 0.03 ~ 0.15%, sodium tripolyphosphate
0.05 ~ 0.2%, heat-resistant steel fiber 0.03 ~ 0.1%；
The chromium magnesium mullite corundum castable that lower body is adopted, raw material components are as follows, are all weight percentage：10mm granularity<
Alumina corundum 15 ~ 25%, the 5mm granularity of 15mm<Alumina corundum 5.0 ~ 10%, the 3mm granularity of 10mm<The alumina of 5mm
Corundum 10 ~ 15%, 1mm granularity<Alumina corundum 3.0 ~ 10%, the 0.088mm granularity of 3mm<The alumina corundum of 1mm
6.0 ~ 15%, 0.044mm granularity<The fused white corundum fine powder 2.0 ~ 10% of 0.088mm, granularity<The fused white corundum of 0.044mm
Micro mist 2.0 ~ 10%, 0.088mm granularity<The fused magnesite fine powder 1.0 ~ 5.0% of 0.5mm, the fused magnesite of granularity 0.044mm
Micro mist 1.0 ~ 5.0%, 1mm granularity<Fused zirconia-mullite 6 ~ 15%, the 0.088mm granularity of 3mm<The fused zirconia-mullite of 1mm
1.0 ~ 5.0%, electric smelting Cr2O3Micro mist 1.0 ~ 5.0%, granularity<Electric smelting Spinel micropowder 1.0 ~ 5.0%, the α-Al of 0.044mm2O3Micro-
Powder 2.0 ~ 8.0%, active SiO2Micro mist 0.5 ~ 1.5%, pure calcium aluminate cement 2.5 ~ 5.0%, calcium lignosulfonate 0.02 ~ 0.1%, sodium tripolyphosphate
0.1 ~ 0.3%, heat-resistant steel fiber 0.01 ~ 0.05%.
2. combined type high life according to claim 1, inexpensive seating brick of steel ladle ventilating brick, it is characterised in that upper body
Using high-purity chromium magnesium mullite corundum castable, raw material components are as follows, are all weight percentage：10mm granularity<15mm
Fused white corundum 15 ~ 18%, 5mm granularity<Fused white corundum 8.0 ~ 10%, the 3mm granularity of 10mm<The electric smelting of 5mm is firm in vain
Jade 10 ~ 12%, 1mm granularity<Fused white corundum 5.0 ~ 8.0%, the 0.088mm granularity of 3mm<The fused white corundum 7.0 of 1mm ~
9.0%, 0.044mm granularity<The plate diamond spar fine powder 4.0 ~ 8.0% of 0.088mm, granularity<The plate diamond spar micro mist of 0.044mm
4.0 ~ 6.0%, 0.088mm granularity<The fused magnesite fine powder 1.0 ~ 3.0% of 0.5mm, the fused magnesite of granularity 0.044mm are micro-
Powder 1.5 ~ 2.5%, 1mm granularity<Fused zirconia-mullite 10 ~ 15%, the 0.088mm granularity of 3mm<The fused zirconia-mullite of 1mm
5.0 ~ 8.0%, electric smelting Cr2O3Micro mist 3.0 ~ 5.0%, granularity<Electric smelting Spinel micropowder 1.0 ~ 3.0%, the α-Al of 0.044mm2O3Micro-
Powder 3.2 ~ 5.0%, active SiO2Micro mist 0.8 ~ 1.2%, pure calcium aluminate cement 3.3 ~ 4.0%, calcium lignosulfonate 0.05 ~ 0.1%, sodium tripolyphosphate
0.10 ~ 0.18%, heat-resistant steel fiber 0.02 ~ 0.05%；
The chromium magnesium mullite corundum castable that lower body is adopted, raw material components are as follows, are all weight percentage：10mm granularity<
Alumina corundum 18 ~ 22%, the 5mm granularity of 15mm<Alumina corundum 7.0 ~ 9.0%, the 3mm granularity of 10mm<The alumina of 5mm
Corundum 11 ~ 13%, 1mm granularity<Alumina corundum 5.0 ~ 8.0%, the 0.088mm granularity of 3mm<The alumina corundum of 1mm
9.0 ~ 12%, 0.044mm granularity<The fused white corundum fine powder 4.0 ~ 8.0% of 0.088mm, granularity<The electric smelting of 0.044mm is firm in vain
Beautiful micro mist 4.0 ~ 8.0%, 0.088mm granularity<The fused magnesite fine powder 1.5 ~ 2.5% of 0.5mm, the electric smelting of granularity 0.044mm
Magnesia micro mist 1.3 ~ 2.5%, 1mm granularity<Fused zirconia-mullite 8 ~ 12%, the 0.088mm granularity of 3mm<The electric smelting zirconium of 1mm is not
Come stone 3.0 ~ 5.0%, electric smelting Cr2O3Micro mist 1.0 ~ 2.0%, granularity<Electric smelting Spinel micropowder 1.0 ~ 3.0%, the α of 0.044mm-
Al2O3Micro mist 4.0 ~ 5.5%, active SiO2Micro mist 0.8 ~ 1.2%, pure calcium aluminate cement 3.2 ~ 3.5%, calcium lignosulfonate 0.05 ~ 0.09%, three
Polyphosphate sodium 0.12 ~ 0.2%, heat-resistant steel fiber 0.01 ~ 0.03%.
3. combined type high life according to claim 1, inexpensive seating brick of steel ladle ventilating brick, it is characterised in that upper body
Using high-purity chromium magnesium mullite corundum castable, raw material components are as follows, are all weight percentage：10mm granularity<15mm
Fused white corundum 15%, 5mm granularity<Fused white corundum 10%, the 3mm granularity of 10mm<The fused white corundum 12% of 5mm,
1mm granularity<Fused white corundum 8.0%, the 0.088mm granularity of 3mm<Fused white corundum 7.0%, the 0.044mm granularity of 1mm
<The plate diamond spar fine powder 8.0% of 0.088mm, granularity<Plate diamond spar micro mist 4.0%, the 0.088mm granularity of 0.044mm<0.5mm
Fused magnesite fine powder 3.0%, fused magnesite micro mist 1.5%, the 1mm granularity of granularity 0.044mm<The electric smelting zirconium of 3mm does not come
Stone 10%, 0.088mm granularity<The fused zirconia-mullite 8.0% of 1mm, electric smelting Cr2O3Micro mist 5.0%, granularity<The electric smelting of 0.044mm
Spinel micropowder 1.0%, α-Al2O3Micro mist 3.2%, active SiO2Micro mist 0.8%, pure calcium aluminate cement 3.3%, calcium lignosulfonate 0.05%, three
Polyphosphate sodium 0.10%, heat-resistant steel fiber 0.05%, all it is weight percentage；
The chromium magnesium mullite corundum castable that lower body is adopted, raw material components are as follows, are all weight percentage：10mm granularity<
Alumina corundum 18%, the 5mm granularity of 15mm<Alumina corundum 9.0%, the 3mm granularity of 10mm<The alumina corundum of 5mm
13%, 1mm granularity<Alumina corundum 8.0%, the 0.088mm granularity of 3mm<Alumina corundum 12%, the 0.044mm of 1mm
Granularity<The fused white corundum fine powder 8.0% of 0.088mm, granularity<Fused white corundum micro mist 4.0%, the 0.088mm grain of 0.044mm
Degree<The fused magnesite fine powder 2.5% of 0.5mm, fused magnesite micro mist 1.3%, the 1mm granularity of granularity 0.044mm<The electricity of 3mm
Molten zirconium mullite 8.0%, 0.088mm granularity<The fused zirconia-mullite 5.0% of 1mm, electric smelting Cr2O3Micro mist 2.0%, granularity<
Electric smelting Spinel micropowder 1.0%, the α-Al of 0.044mm2O3Micro mist 4.0%, active SiO2Micro mist 0.8%, pure calcium aluminate cement 3.2%,
Calcium lignosulfonate 0.05%, sodium tripolyphosphate 0.12%, heat-resistant steel fiber 0.03%, all it is weight percentage.
4. combined type high life according to claim 1, inexpensive seating brick of steel ladle ventilating brick, it is characterised in that the seat
The outer diameter D of brick body is 360～380mm, and the overall height H of brick cup body is 420～470mm.
5. combined type high life according to claim 1, inexpensive seating brick of steel ladle ventilating brick, it is characterised in that the peace
Dress hole be butt truncated cone-shaped, truncated cone-shaped upper port diameter d1 be 125～150mm, truncated cone-shaped lower port diameter d2 be 195～
220mm.
6. combined type high life according to claim 1, inexpensive seating brick of steel ladle ventilating brick, it is characterised in that upper body
Chase on inwall is 3 ~ 5, and the depth of chase is consistent with width, is 6～10mm.
7. combined type high life described in claim 1, the preparation method of inexpensive seating brick of steel ladle ventilating brick, first pour and pour down this
Body, pours into a mould upper body afterwards, as follows including step：
1）The mould inner wall for preparing brick cup of air brick is uniformly brushed after oil, is placed on shake table；
2）After component proportion dispensing according to the chromium magnesium mullite corundum castable of lower body, first dry-mixed 5 ~ 10 minutes, mixing is all
After even, the water of addition material gross weight 5.0～5.5%, wet mixing 5 ~ 10 minutes, mix, obtain lower body pug；
3）Lower body pug is added in mould, is vibrated in charging, until the height of upper body pug is (H-h) mm；
4）It is after component proportion dispensing according to the high-purity chromium magnesium mullite corundum castable of upper body, first dry-mixed 5 ~ 10 minutes,
After mixing, the water of addition material gross weight 4.5～5.0%, wet mixing 5 ~ 10 minutes, mix, obtain body pug；
5）Lower body pug is shakeout, and upper body pug is added in mould before the solidification of lower body pug immediately, in charging
Vibration, until pug is maintained an equal level with mould top edge, continues to be vibrated to surface compact bleeding；
6）After conserving 2～3 days under conditions of temperature 17-25 DEG C, humidity are more than 90%, the demoulding, the life of brick cup of air brick body is obtained
Base；
7）Brick cup of air brick body green compact are toasted, then natural cooling, ladle pocket block body finished product.
8. combined type high life according to claim 7, the preparation method of inexpensive seating brick of steel ladle ventilating brick, its feature exist
In brick cup of air brick body green compact are toasted and following flow process is pressed in cooling；A, from 0～150 DEG C with 10 DEG C/h programming rate heat up, rise
Temperature is to 135～150 DEG C；B, 135～150 DEG C be incubated, 12～16h of temperature retention time；C, again from 135～150 DEG C with 10 DEG C/h liter
Warm speed heats up, and is warming up to 235～250 DEG C；D, 235～250 DEG C be incubated, 8～12h of temperature retention time；E, again from 235～250
DEG C with 15 DEG C/h programming rate heat up, be warming up to 575～600 DEG C, f, 575～600 DEG C insulation 8～12h after, truce is naturally cold
But, 12～24h of cool time, combined type seating brick of steel ladle ventilating brick are prepared and are completed.
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| CN106631050B (en) * | 2015-11-05 | 2019-12-10 | 洛阳轩石新材料科技有限公司 | Cleaning-free air brick with uniform structure and manufacturing method thereof |
| CN107805058B (en) * | 2017-11-01 | 2020-09-25 | 瑞泰马钢新材料科技有限公司 | Corundum bottom-covering brick for steel ladle and preparation method thereof |
| CN107840672A (en) * | 2017-11-10 | 2018-03-27 | 河南新拓耐火材料有限公司 | Brick cup preparation method and equipment |
| CN111848189B (en) * | 2020-07-24 | 2021-03-30 | 湖南省娄底市宏冶炉料有限责任公司 | Novel scouring-resistant thermal shock-resistant impact brick, preparation method and current stabilizer |
| CN112321281B (en) * | 2020-09-02 | 2022-05-27 | 瑞泰科技股份有限公司 | Composite brick cup and preparation process thereof |
| CN112408947A (en) * | 2020-10-30 | 2021-02-26 | 云南濮耐昆钢高温材料有限公司 | High-temperature-resistant coating for steel ladle and preparation method thereof |
| CN112500137B (en) * | 2021-02-05 | 2021-07-02 | 北京利尔高温材料股份有限公司 | Ladle anti-erosion magnesia refractory mortar and preparation method thereof |
| CN114478057B (en) * | 2021-12-30 | 2022-11-11 | 广西富川正辉机械有限公司 | Ventilation block for system bottom blowing inert gas for refining high-purity high-carbon high-chromium-manganese 13 high-manganese steel material, preparation process and application thereof |
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| CN101792323B (en) * | 2010-03-17 | 2012-12-26 | 赵大兴 | Aluminum-chromium-zirconium composite air bricks and manufacturing method thereof |
| CN202097397U (en) * | 2011-05-03 | 2012-01-04 | 濮阳濮耐高温材料（集团）股份有限公司 | Seat brick of composite permeable brick |
| CN203437636U (en) * | 2013-09-06 | 2014-02-19 | 济南新峨嵋实业有限公司 | Steel ladle base brick |
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