CN105859308A - Refractory material and tuyere composite brick - Google Patents
Refractory material and tuyere composite brick Download PDFInfo
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- CN105859308A CN105859308A CN201610192211.9A CN201610192211A CN105859308A CN 105859308 A CN105859308 A CN 105859308A CN 201610192211 A CN201610192211 A CN 201610192211A CN 105859308 A CN105859308 A CN 105859308A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
- C04B35/101—Refractories from grain sized mixtures
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3427—Silicates other than clay, e.g. water glass
- C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
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Abstract
The invention provides a refractory material and a tuyere composite brick. The refractory material is prepared from the following raw materials in parts by weight: 66 to 76 parts of a particle material with a particle size of 0.088 to 8 mm, and 24 to 34 parts of fine powder with a particle size larger than 0 and less than 0.088 mm, wherein the particle material comprises brown fused alumina, andalusite, sillimanite and quartz sand with a mass ratio of (50-70): (3-7): (2-6): (1-3); and the fine powder comprises corundum powder, silicon carbide powder, calcined alpha alumina micropowder, silicon dioxide micropowder and mullite raw meal with a mass ratio of (7-11): (5-9): (3-7): (2-6): (2-6). The refractory material uses corundum and silicon carbide as main raw materials, and adopts the andalusite, the sillimanite, the quartz sand, the calcined alpha alumina micropowder, the silicon dioxide micropowder and the mullite raw meal to improve the crystal phase structure of the refractory material, so the apparent porosity of the refractory material is reduced; and scour resistance, slag resistance, alkali resistance, oxidation resistance, wear resistance and thermal shock resistance of the refractory material are improved.
Description
Technical field
The present invention relates to tuyere combined brick technical field, particularly relate to a kind of refractory material and tuyere combined brick.
Background technology
Blast furnace is the main Thermal Equipment of ironmaking production, and its position, air port is the region that high in-furnace temperature is the highest.Before air port
The coal gas of high temperature produced rises with the highest speed, and its temperature is about more than 1600 DEG C；1450 DEG C～the high temperature of about 1550 DEG C
Molten iron and slag flow to cupola well through bosh, and high-temperature coke ceaselessly moves downward, and have the high speed of coke to return at position, air port
Rotation motion, various high-temperature metallurgical reactions are carried out tempestuously in this region, and therefore, the refractory material at the position, air port of blast furnace is in
In the most severe working condition.Requirement to the refractory material at the position, air port of blast furnace is: the erosion of slag high temperature resistant, resistance to, anti-
Alkalescence coal gas good, anti-and molten iron, the washing away of slag, good thermal shock stability, anti-CO2And H2The oxidation of O.
At present, the refractory material at blast-furnace tuyere position is modular tile, and described modular tile is by a brick one artificial ramming of mould
Method, female brick machine cuts method, mechanical pressing method or machine pressure-vibration moulding method etc. produce monomer brick, then by each monomer brick group
Dress forms.Tuyere combined brick for this position has Si3N4Multiple in conjunction with SiC brick, Sialon Ceramic bond SiC brick and Plastic phase
Close corundum brick etc..But these tuyere combined brick cost performances existing are the highest, and antiscour and anti-slag alkali resistance are the strongest.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of refractory material and tuyere combined brick, it is resistance to that the present invention provides
Fire material has antiscour and the anti-slag alkali resistance of excellence.
The invention provides a kind of refractory material, the component including following raw material prepare:
Particle diameter is particulate material 66～76 weight portion of 0.088～8mm；
It is more than 0 fine powder 24～34 weight portion less than 0.088mm with particle diameter；
Described particulate material includes that mass ratio is 50～70:3～7:2～the Brown Alundum of 6:1～3, andalusite, sillimanite and stone
Sand；Fine powder includes that mass ratio is 7～11:5～9:3～the schmigel of 7:2～6:2～6, carborundum powder, calcining alpha-aluminium oxide are micro-
Powder, fine silica powder and mullite raw meal powder.
Preferably, described particulate material includes the particulate material that particle diameter is 5～8mm and the particulate material that particle diameter is 3～5mm；Described
Particle diameter be the particulate material of 5～8mm quality accounting in all particulate material be 32%～42%；
Described particle diameter be the particulate material of 3～5mm quality accounting in all particulate material be 18%～28%.
Preferably, described particulate material includes the particulate material that particle diameter is 1～3mm and the particulate material that particle diameter is 0.088～1mm；
Described particle diameter be the particulate material of 1～3mm quality accounting in all particulate material be 9%～19%；
Described particle diameter be the particulate material of 0.088～1mm quality accounting in all particulate material be 21%～31%.
Preferably, the bulk density >=3.8g/cm of described Brown Alundum3, the microhardness of Brown Alundum is 1800～2000；
Bulk density >=the 3.2g/cm of described carborundum3, the Mohs' hardness of carborundum is 9.2.
The invention provides a kind of tuyere combined brick, following methods prepare:
By the fine silica powder of 2～6 weight portions, 2～6 mullite raw meal powder, 0.05～0.35 weight portions of weight portion
Water reducer and the water for ball milling of 4～8 weight portions, obtain mud, be then 0.088～8mm by the particle diameter of 66～76 weight portions
Particulate material, the particle diameter of remaining weight portion are less than fine powder and the mixing of above-mentioned mud of 0.088mm more than 0, obtain pug；Described granule
Material includes that mass ratio is 50～70:3～7:2～the Brown Alundum of 6:1～3, andalusite, sillimanite and quartz sand；Remaining fine powder bag
Include schmigel, carborundum powder and calcining alpha-aluminium oxide micropowder that mass ratio is 7～11:5～9:3～7.
Described pug is poured in plaster master and carries out vibration centrifugal molding, obtain adobe；
Described adobe is dried and burns till, then carries out cutting and combining assembling, obtain tuyere combined brick.
Preferably, the temperature burnt till described in is 1470 DEG C～1480 DEG C；The described time burnt till is 12～14 hours.
Preferably, vacuum stirring will be carried out before described mud dispensing；The speed of described vacuum stirring is 35～38rpm；Institute
The time stating vacuum stirring is 60～90min.
Preferably, centrifugal speed during described centrifugal forming is 1400～1500rpm；During centrifugal during described centrifugal forming
Between be 4min～5min.
Preferably, the apparent porosity of described tuyere combined brick is 8～10%；The density of tuyere combined brick be 3.10～
3.25g/cm3。
The invention provides a kind of refractory material, the raw material including following components prepare: particle diameter is 0.088～8mm
Particulate material 66～76 weight portion and particle diameter are less than fine powder 24～34 weight portion of 0.088mm more than 0；Particulate material includes that mass ratio is
50～70:3～7:2～the Brown Alundum of 6:1～3, andalusite, sillimanite and quartz sand；Fine powder include mass ratio be 7～11:5～
The schmigel of 9:3～7:2～6:2～6, carborundum powder, calcining alpha-aluminium oxide micropowder, fine silica powder and mullite raw meal powder.
The refractory material that the present invention provides is based on granule closestpacking principle and micropowder technology, with corundum and carborundum for the most former
Material, improves refractory material with andalusite, sillimanite, quartz sand, calcining alpha-aluminium oxide micropowder, silicon powder and mullite raw meal powder
Crystal phase structure, reduces the apparent porosity of refractory material and reduces air vent aperture so that it is uniform texture, without slabbing, compactness
Height, intensity is high, thus improves antiscour and the anti-slag alkali resistance of refractory material.It addition, the refractory material that the present invention provides is also
There is non-oxidizability, wearability and the thermal shock resistance of excellence.Test result indicate that: prepared by the refractory material that the present invention provides
The apparent porosity of tuyere combined brick is 8～10%；Bulk density is 3.1～3.25g/cm3；Pressure is 151～184MPa；Reheating
Rate of change is+0.04～+0.11%；Refractoriness >=1790 DEG C；Load softening point is 1650～1700 DEG C；Creep rate be 0.24～
0.61%；Thermal shock resistance is 52～71 times；Iron-resistant water melting erosion rate increases is 1.0～1.5%；Resistance to slag is 8～10%；Alkali resistance is
8～11%；Non-oxidizability is 0.006～0.008g/cm2；Wearability is 2.1～3.8cm3。
Detailed description of the invention
The invention provides a kind of refractory material, the raw material including following components prepare:
Particle diameter is particulate material 66～76 weight portion of 0.088～8mm；
It is more than 0 fine powder 24～34 weight portion less than 0.088mm with particle diameter；
Described particulate material includes that mass ratio is 50～70:3～7:2～the Brown Alundum of 6:1～3, andalusite, sillimanite and stone
Sand；
Described fine powder includes that mass ratio is 7～11:5～9:3～the schmigel of 7:2～6:2～6, carborundum powder, calcining α
Alumina powder, silicon powder and mullite raw meal powder.
The refractory material that the present invention provides, based on granule closestpacking principle and micropowder technology, with corundum and carborundum is
Primary raw material, described corundum includes the Brown Alundum in particulate material and the schmigel in fine powder, with andalusite, sillimanite, quartz sand,
Calcining alpha-aluminium oxide micropowder, fine silica powder and mullite raw meal powder improve the crystal phase structure of refractory material, reduce refractory material
Apparent porosity and reduce air vent aperture so that it is uniform texture, without slabbing, compactness is high, and intensity is high, thus improves fire-resistant
The antiscour of material and anti-slag alkali resistance.It addition, the refractory material that the present invention provides also has the non-oxidizability, wear-resisting of excellence
And thermal shock resistance.The cost performance of tuyere combined brick prepared by this refractory material is higher, beneficially industrialized production.
The present invention provide refractory material prepare particulate material 66～76 weight that raw material includes that particle diameter is 0.088～8mm
Part；Described particulate material includes that mass ratio is 50～70:3～7:2～the Brown Alundum of 6:1～3, andalusite, sillimanite and quartz sand；
In the present invention, described particulate material includes the particulate material that particle diameter is 5～8mm and the particulate material that particle diameter is 3～5mm；
Described particle diameter is that the particulate material of 5～8mm quality accounting in all particulate material is preferably 32%～42%；Described particle diameter is 3
～the quality accounting that the particulate material of 5mm is in all particulate material is preferably 18%～28%.In the present invention, described particulate material bag
Include the particulate material that particle diameter is 1～3mm and the particulate material that particle diameter is 0.088～1mm；Described particle diameter is that the particulate material of 1～3mm is in institute
The quality accounting in particulate material is had to be preferably 9%～19%；Described particle diameter is that the particulate material of 0.088～1mm is in all particulate material
In quality accounting be preferably 21%～31%.
In the present invention, the bulk density of described Brown Alundum preferably >=3.8g/cm3, the microhardness of Brown Alundum is preferably
1800～2000.In the present invention, described Brown Alundum is to use Alumina, carbon materials, three kinds of raw materials of iron filings through superfusion in electric furnace
The sepia Alundum changing reduction and prepare；The main chemical of Brown Alundum is Al2O3, its content 94.5%～97%,
Possibly together with a small amount of Fe, Si, Ti etc..
In the present invention, the bulk density of described carborundum preferably >=3.2g/cm3；The Mohs' hardness of described carborundum is excellent
Elect 9.2 as；The coefficient of expansion of described carborundum is preferably 4.5～5.0*10-6℃-1.In the present invention, the resistance to height of described carborundum
Warm, corrosion-resistant, antiscour, wear-resisting, anti-thermal shock, and when goods burn till in air atmosphere, product surface carborundum is the most oxidized,
Generate silica oxides protecting film, stop internal carborundum to continue oxidized.
In the present invention, described Brown Alundum and carborundum are the primary raw material of refractory material.The present invention to Brown Alundum and
The source of carborundum does not has special restriction, uses Brown Alundum well known to those skilled in the art and carborundum, as permissible
Use its commercial goods.
In the present invention, the hardness of described andalusite is preferably 7.0～7.5；The bulk density of described andalusite is preferably
3.13～3.16g/cm3；In the present invention, the hardness of described sillimanite is preferably 6.5～7.5；The volume of described sillimanite is close
Degree is preferably 3.23～3.27g/cm3.In the present invention, described andalusite and sillimanite are burning till and during applied at elevated temperature,
Can progressively decompose and continue secondary mullite, produce mullite high-temperature-phase, beneficially goods such as tuyere combined brick lotus soft,
The high-temperature behavior such as creep and thermal shock improves, and meanwhile, this reaction produces certain volume and expands, and can reduce air vent aperture, offsets system
The high temperature sintering of product shrinks, and is conducive to improving the high volume stability of goods such as tuyere combined brick.
In the present invention, described quartz sand is preferably purity quartzite；The SiO of described purity quartzite2Content preferred
It is 99%～99.5%.In the present invention, described refractory material adds quartz sand, SiO therein2Can be subjected to displacement or rebuild
Crystal conversion, changes the crystal phase structure of refractory material, makes refractory material produce lasting body during high temperature sintering and use
Long-pending expand, the lotus that can reduce air vent aperture, beneficially goods such as tuyere combined brick is soft, creep, the carrying of intensity and anti-wear performance
High, it is possible to the high temperature sintering of balance goods such as tuyere combined brick shrinks, and improves the high volume stability of goods.
In the present invention, described particulate material includes that mass ratio is 50～70:3～7:2～the Brown Alundum of 6:1～3, red post
Stone, sillimanite and quartz sand；Preferably include mass ratio be 52～68:3.5～6.5:2.5～the Brown Alundum of 5.5:1.5～2.5,
Andalusite, sillimanite and quartz sand.
The raw material of preparing of the refractory material that the present invention provides includes that particle diameter is more than 0 fine powder 24～34 weight less than 0.088mm
Amount part；Described fine powder includes that mass ratio is 7～11:5～9:3～the schmigel of 7:2～6:2～6, carborundum powder, calcining α oxidation
Aluminum micropowder, fine silica powder and mullite raw meal powder.
In the present invention, described fine powder includes schmigel；The preferred white alundum powder of described schmigel and/or plate diamond spar powder.
Described white fused alumina, white, crystal is huge, porous, crystal is strip and rhombus, Al2O3Content is more than 98.5%, and contains
There is a small amount of Fe2O3、SiO2And Na2The impurity such as O, have the features such as high temperature resistant and corrosion resistance；Described plate diamond spar, Al2O3Content
More than 99%, crystal form tabular, high-purity, fine and close, there is the features such as high-termal conductivity, thermal shock resistance and erosion resisting.In the present invention,
Described schmigel is as base portion primary raw material, it is ensured that the thermal shock resistance that goods are good, wear-resisting erosion resisting and high temperature are comprehensive
Performance.
In the present invention, described fine powder includes calcining alpha-aluminium oxide micropowder.In the present invention, described calcining alpha-aluminium oxide micropowder
For superfine powder, mean diameter is preferably 2～4 μm, and activity is good；It adds, on the one hand, plays filling effect, makes base portion tend to
Closestpacking, reduces pore and reduces air vent aperture；On the other hand, strengthen substrate, improve sintering activity, reduce sintering temperature
Degree, improves product strength, wear-resisting, antiscour and anti-slag alkali resistant erosion performance.
In the present invention, described fine powder includes fine silica powder；Described fine silica powder is amorphous Si O2(amorphous
State), its granule is superfine, and preferably particle diameter is more than 0 less than or equal to the fine silica powder of 5 μm, and its mean diameter is preferably 0.15 μ
M, specific surface area is preferably 20～30m2/g.The addition of fine silica powder, first, it is possible to play filling effect, make base portion
Tend to closestpacking, reduce and reduce pore；Second, it is possible to strengthen substrate, improve sintering activity, reduce sintering temperature, carry
High product strength；3rd, it is possible to easily react generation mullite phase with calcining alpha-aluminium oxide micropowder, thus it is soft, compacted to improve goods lotus
The high-temperature behaviors such as change, improve goods antiscour, anti-slag alkali resistant erosion performance.
In the present invention, described fine powder includes mullite raw meal powder.In the present invention, described mullite raw meal powder is preferably
The particle diameter mullite raw meal powder more than 0 and less than or equal to 0.074mm.In the present invention, have similar due to mullite raw meal powder
Mullite theory constituent, at high temperature can be converted into A3S2 phase, and A3S2 phase has, and fusing point is high, the coefficient of expansion is little, heat resistanceheat resistant
Pinking is good, creep resistance advantages of higher, and it adds the high-temperature behavior that can improve goods.
In the present invention, in said components, the mass ratio of particulate material and fine powder is 66～76:24～34, and ratio raises then
The many fine powders of granule are on the low side, do not reach closestpacking, and fine powder is not enough to filler particles gap, cause article construction to loosen, aobvious gas
Porosity raises, and air vent aperture is big, and anti-erosion, erosion resistibility decline；Ratio reduces, and does not reaches closestpacking, granule equally
Fine powder on the low side is on the high side, and unnecessary fine powder accumulation can destroy the skeleton that granule is built, and causes goods high-temperature behavior to reduce.
In the present invention, the preparation method of described refractory material is carried out the most in accordance with the following methods:
By the fine silica powder of 2～6 weight portions, 2～6 mullite raw meal powder, 0.05～0.35 weight portions of weight portion
Water reducer and the water for ball milling of 4～8 weight portions, obtain mud, be then 0.088～8mm by the particle diameter of 66～76 weight portions
Particulate material, the particle diameter of remaining weight portion are more than 0 and are less than fine powder and the mixing of above-mentioned mud of 0.088mm, obtain pug；Described
Pellet includes that mass ratio is 50～70:3～7:2～the Brown Alundum of 6:1～3, andalusite, sillimanite and quartz sand；Remaining fine powder
Including the schmigel that mass ratio is 7～11:5～9:3～7, carborundum powder and calcining alpha-aluminium oxide micropowder.
Described pug is poured in plaster master and carries out vibration centrifugal molding, obtain adobe；
Described adobe is dried and burns till, then carries out cutting and combining assembling, obtain tuyere combined brick.
In the present invention, described particle diameter be 0.088～8mm particulate material and particle diameter more than 0 less than the fine powder bag of 0.088mm
The component included is consistent with technique scheme with the source of component, does not repeats them here.
In the present invention, the temperature burnt till described in is preferably 1470 DEG C～1480 DEG C；The described time burnt till is preferably 12
～14 hours.
Present invention also offers a kind of tuyere combined brick, described tuyere combined brick is a kind of refractory material.The present invention is to it
Shape does not has special restriction, can be designed it according to actual needs.
In the present invention, the apparent porosity of described tuyere combined brick is preferably 8～10%；The density of described tuyere combined brick
It is preferably 3.10～3.25g/cm3。
The invention provides a kind of tuyere combined brick, following methods prepare:
By the fine silica powder of 2～6 weight portions, 2～6 mullite raw meal powder, 0.05～0.35 weight portions of weight portion
Water reducer and the water for ball milling of 4～8 weight portions, obtain mud, be then 0.088～8mm by the particle diameter of 66～76 weight portions
Particulate material, the particle diameter of remaining weight portion are less than fine powder and the mixing of above-mentioned mud of 0.088mm more than 0, obtain pug；Described granule
Material includes that mass ratio is 50～70:3～7:2～the Brown Alundum of 6:1～3, andalusite, sillimanite and quartz sand；Remaining fine powder bag
Include schmigel, carborundum powder and calcining alpha-aluminium oxide micropowder that mass ratio is 7～11:5～9:3～7.
Described pug is poured in plaster master and carries out vibration centrifugal molding, obtain adobe；
Described adobe is dried and burns till, then carries out cutting and combining assembling, obtain tuyere combined brick.
In the present invention, particulate material described in described particulate material, the kind of fine powder, consumption and source and technique scheme,
The kind of fine powder, consumption are consistent with source, do not repeat them here.
The present invention, first by fine silica powder, mullite raw meal powder, water and water reducer ball milling together with in ball mill, prepares
Mud.In the present invention, the mass ratio of fine silica powder, mullite raw meal powder, water and water reducer is preferably 2～6:2～6:4
～8:0.15～0.35.The present invention preferably carries out the preparation of mud in ball mill well known to those skilled in the art.At this
In bright, described water reducer includes organic water reducer and inorganic water reducer, the most inorganic water reducer；Described inorganic water reducer is preferably
Sodium tripolyphosphate.In the present invention, the slurrying time is preferably 5～6h.
Brown Alundum, andalusite, sillimanite and quartz sand are first mixed in puddle mixer by the present invention, and the time of mixing is preferably
1～2min, it is subsequently adding mud, after mixing 4～6min, adds remaining fine fraction, then kneading 15～20min obtains pug.Mixed
The equipment closed is preferably pressure puddle mixer well known to those skilled in the art.The present invention preferably will carry out vacuum before mud dispensing
Stirring；The pressure of described vacuum stirring is preferably 1500～1800Pa, and the speed of described vacuum stirring is preferably 35～38rpm；
The temperature of described vacuum stirring is preferably 20～25 DEG C；The time of described vacuum stirring is preferably 60～90min.In the present invention
In, lower by mud being carried out the porosity of the adobe that vacuum stirring can make to prepare, to organize finer and close, compressive resistance is more
High.In the present invention, the density of described adobe is preferably 3.10～3.25g/cm3。
After obtaining pug, described pug is poured in plaster master and carries out vibration centrifugal molding by the present invention, obtains adobe.
In the present invention, described plaster master preferably employs moulded method and prepares: the most described plaster master is preferably according to open
The method of the plaster master number described in the patent of CN 87102012A is prepared:
By Gypsum Fibrosum mother's brick by design requirement one assembly of composition, mark intersection, edge according to the relation of passing through mutually of assembly
Intersection carries out overall machining, then is disintegrated, and obtains the sub-brick of Gypsum Fibrosum.
More specifically, the preparation method of described plaster master is: first by Gypsum Fibrosum mother's brick of each modular tile by design requirement group
Become an entirety, then passing through mutually to close and tie up to the integral surface of Gypsum Fibrosum mother's brick composition and mark intersection according to assembly, then along phase
Transversal carries out overall machining, is disintegrated, just obtain the Gypsum Fibrosum with designed modular tile profile after excision redundance
Sub-stock mould type, and then turn over it and prepare plaster master.
Joined for mud after vacuum stirring pug is poured in plaster master and carries out vibration centrifugal molding by the present invention.
The present invention preferably carries out centrifugal forming on centrifuge well known to those skilled in the art.Granule and fine powder in pug are being centrifuged
Under the effect of power the most tightly packed so that the increase in density of adobe.During centrifugal forming, the density of adobe is along with centrifugal force
Increase and improve.In the present invention, centrifugal speed during described centrifugal forming is 1400～1500rpm；During described centrifugal forming
Centrifugation time be 4～5min.In the present invention, the density of described adobe is preferably 3.10～3.25g/cm3。
After obtaining adobe, described adobe is dried and burns till by the present invention, then carries out cutting and combining assembling, obtains wind
Mouth modular tile.The present invention is first dried before burning till；Described dry mode is preferably infrared drying.The present invention is to infrared
The mode that line is dried does not has special restriction, uses infra red drying technology scheme well known to those skilled in the art.?
In the present invention, described dry temperature is preferably 20～140 DEG C；The described dry time is preferably 36～40 hours.The present invention
Preferably burn till in tunnel cave well known to those skilled in the art；The a length of 125.4m of described tunnel cave；The present invention is excellent
Choosing is burnt till in air atmosphere；In the present invention, the temperature burnt till described in is preferably 1470 DEG C～1480 DEG C；Described burn till
Time be preferably 12～14 hours.
The present invention preferably carries out cutting processing after adobe is fired into monomer brick, then is combined assembling, obtains air port
Modular tile.In the present invention, the shape of described adobe designs according to actual needs, may be identical, it is also possible to differ.
The preparation method of the tuyere combined brick that the present invention provides moulded prepares plaster master and mud is true by using
Empty stirring casting-centrifugate technique so that tuyere combined brick dense structure, apparent porosity is relatively low, and air vent aperture is less, without layer
Split, even tissue, each monomer brick coupling mechanism force of intermeshing is strong, good integrity, do not have loosening, shift, peel off, to fall brick etc. existing
As, the life-span meets blast furnace generation stove labour.
The present invention is according to the EDTA capacity in GB/T 6900.4-2006 clay, high alumina refractories chemical analysis method
Method determines alumina content in modular tile, and result shows, in the modular tile that the present invention provides, alumina content is higher.
The present invention is according to the adjacent diaza in GB/T 6900.3-2006 clay, high alumina refractories chemical analysis method
Ferric oxide content in luxuriant and rich with fragrance spectrphotometric method for measuring modular tile, result shows, iron sesquioxide in the modular tile that the present invention provides
Content is relatively low.
The present invention surveys according to the gas volumetric method in GB/T 16555.2-1996 Tercod chemical analysis method
Determining carborundum amount, result shows, in the modular tile that the present invention provides, carborundum content is moderate.
The present invention according to shaping refractory product apparent porosity fine and close in GB/T 2997-2000, water absorption rate, bulk density and
The apparent porosity of true porosity measurement of test method modular tile and bulk density, result shows, the modular tile that the present invention provides
There is relatively low apparent porosity and higher bulk density.
The present invention is group according to GB/T 5072-1985 densification shaping refractory product cold crushing strength measurement of test method
Closing the compressive resistance of brick, i.e. scour resistance, result shows, the modular tile that the present invention provides has higher compressive resistance, i.e.
Excellent scour resistance.
The present invention is combination according to GB/T 5988-1986 densification shaping refractory product reheat linear change measurement of test method
The reheating linear change rate on reheating of brick, result shows, the modular tile reheating linear change rate on reheating that the present invention provides is less.
The present invention tests the refractoriness of modular tile according to GB/T 7322-2007 refractory material refractoriness test method, knot
Fruit shows, the modular tile that the present invention provides has higher refractoriness.
The present invention surveys according to YB/T 370-1995 refractory product refractoriness under load test method (non-differential-temperature-raising method)
Having tried the load softening point of modular tile, result shows, the modular tile load softening point that the present invention provides is higher.
The present invention tests the creep rate of modular tile, knot according to GB/T 5073-1985 refractory product pressure creep test method
Fruit shows, the modular tile that the present invention provides has relatively low creep rate.
The present invention tests group according to YB/T 376.1-1995 refractory product thermal shock resistance test method (water-chilling method)
Closing the thermal shock resistance of brick, result shows, the modular tile that the present invention provides has good thermal shock resistance.
The present invention tests the alkali resistance of modular tile, result table according to GB/T 14983 refractory material alkali proof test method
Bright, the modular tile that the present invention provides has good alkali resistance.
The present invention tests the wearability of modular tile according to the room temperature abrasion test method of GB/T 18301 refractory material,
Result shows, the modular tile that the present invention provides has good anti-wear performance.
The present invention according to YB/T 117 blast furnace with refractory material slag resistance measurement of test method the resistance to slag of modular tile, knot
Fruit shows, the modular tile that the present invention provides has good slag resistance.
The present invention tests the molten iron corrode of modular tile according to YB/T 4036 carbon block for blast furnace molten iron corrode index tests method
Index, result shows, the modular tile that the present invention provides has good iron-resistant aqueous fusion erosion performance.
The non-oxidizability of modular tile is tested: will according to the oxidation resistance test method of GB/T 13244 carbon containing refractory
Sample is cut into the cube that the length of side is 50mm, is placed in trial furnace, with flow blowing air in stove of 5L/min, by 10 DEG C/min
Speed rise to 1400 DEG C, constant temperature 5hr, after being cooled to room temperature, measure sample oxidation before and after quality, calculate oxidation after unit plane
Long-pending mass change weighs the quality of sample non-oxidizability.Result shows, the modular tile that the present invention provides has good resisting
Oxidation susceptibility.
In order to further illustrate the present invention, a kind of refractory material present invention provided below in conjunction with embodiment and air port group
Conjunction brick is described in detail, but they can not be interpreted as limiting the scope of the present invention.
Embodiment 1
The global design of brick it is combined, i.e. according to Patent No. 87102012 according to a certain blast-furnace tuyere design size
Chinese patent carries out moulded, obtains the plaster master of each monomer brick of modular tile；
The particle diameter that mass ratio is 4:4:0.2:6 is less than more than 0 less than or equal to the fine silica powder of 5 μm, particle diameter more than 0
Mullite raw meal powder equal to 0.074mm, particle diameter are more than 0 less than or equal to 0.15mm sodium tripolyphosphate water reducer and clean water in advance
In ball mill, ball milling mixing, obtains mud, and mud is carried out vacuum stirring process；
It is that the Brown Alundum of 60:5:4:2, andalusite, sillimanite and quartz sand join 800 pressure puddle mixers by mass ratio
In, in described particulate material, particle diameter is that the particulate material of 5～8mm quality accounting in all particulate material is preferably 36.62%；Described
In particulate material, particle diameter is that the particulate material of 3～5mm quality accounting in all particulate material is preferably 22.54%；Described particulate material
Middle particle diameter is that the particulate material of 1～3mm quality accounting in all particulate material is preferably 14.08%；Particle diameter in described particulate material
Be 0.088～1mm particulate material quality accounting in all particulate material be preferably 26.76%；Above-mentioned Brown Alundum, andalusite,
Sillimanite and quartz sand are first dry mixed 2 minutes, then are added thereto to above-mentioned vacuum stirring mud mixed grind 5min, add remaining fine powder
Part, i.e. mass ratio are the white fused alumina fine powder of 9:7:5, carbide fine powder and calcining alpha-aluminium oxide micropowder, mixing 18min, discharging,
Obtain pug；
Being poured into by pug in above-mentioned plaster master, charging limit, limit vibrates, and after 3～5min, then will be equipped with the Gypsum Fibrosum of pug
Master mold is placed on centrifuge and carries out centrifugal forming, and centrifugal speed during described centrifugal forming is 1450rpm, and centrifugation time is
5min, obtains adobe；
Above-mentioned adobe is carried out at 20～120 DEG C infrared drying 38hr；Then at 125.4m tunnel furnace air gas
Burning till under atmosphere, the temperature burnt till is 1475 DEG C, and the time burnt till is 13 hours, obtains monomer brick, is entered by described monomer brick
Row cuts processing, then is combined assembling, obtains tuyere combined brick.Described tuyere combined brick is carried out performance detection, detection knot
Fruit is as shown in table 1:
The performance test results of the tuyere combined brick of table 1 embodiment of the present invention 1～3 preparation
Embodiment 2
The global design of brick it is combined, i.e. according to Patent No. 87102012 according to a certain blast-furnace tuyere design size
Chinese patent carries out moulded, obtains the plaster master of each monomer brick of modular tile；
The particle diameter that mass ratio is 4:3:0.15:5.5 is less than more than 0 less than or equal to the silicon powder of 5 μm, particle diameter more than 0
Mullite raw meal powder, particle diameter in 0.074mm exist less than or equal to 0.15mm sodium tripolyphosphate water reducer and clean water in advance more than 0
In ball mill, ball milling mixing, obtains mud, and mud is carried out vacuum stirring process；
It is that the Brown Alundum of 58:6:5:3, andalusite, sillimanite and quartz sand join 800 pressure puddle mixers by mass ratio
In, in described particulate material, particle diameter is that the particulate material of 5～8mm quality accounting in all particulate material is preferably 38.89%；Described
In particulate material, particle diameter is that the particulate material of 3～5mm quality accounting in all particulate material is preferably 19.44%；Described particulate material
Middle particle diameter is that the particulate material of 1～3mm quality accounting in all particulate material is preferably 13.89%；Particle diameter in described particulate material
Be 0.088～1mm particulate material quality accounting in all particulate material be preferably 27.78%；Above-mentioned Brown Alundum, andalusite,
Sillimanite and quartz sand are first dry mixed 1.5 minutes, then are added thereto to above-mentioned vacuum stirring mud mixed grind 4min, add remaining thin
Powder part, i.e. mass ratio are the plate diamond spar fine powder of 9:6:6, carbide fine powder and calcining alpha-aluminium oxide micropowder, mix 20min, go out
Material, obtains pug；
Being poured into by pug in above-mentioned plaster master, charging limit, limit vibrates, and after 4～5min, then will be equipped with the Gypsum Fibrosum of pug
Master mold is placed on centrifuge and carries out centrifugal forming, and centrifugal speed during described centrifugal forming is 1500rpm, and centrifugation time is
4min, obtains adobe；
Above-mentioned adobe is carried out at 25～140 DEG C infrared drying 40hr；Then at 125.4m tunnel furnace air gas
Burning till under atmosphere, the temperature burnt till is 1470 DEG C, and the time burnt till is 14 hours, obtains monomer brick, is entered by described monomer brick
Row cuts processing, then is combined assembling, obtains tuyere combined brick.Described tuyere combined brick is carried out performance detection, detection knot
Fruit is as shown in table 1.
Embodiment 3
The global design of brick it is combined, i.e. according to Patent No. 87102012 according to a certain blast-furnace tuyere design size
Chinese patent carries out moulded, obtains the plaster master of each monomer brick of modular tile；
The particle diameter that mass ratio is 3:4:0.25:5.5 is less than or equal to the silicon powder of 5 μm, particle diameter for be less than more than 0 more than 0
Mullite raw meal powder equal to 0.074mm, particle diameter are pre-less than or equal to 0.15mm sodium tripolyphosphate water reducer and clean water more than 0
First ball milling mixing in ball mill, obtains mud, and mud is carried out vacuum stirring process；
It is that the Brown Alundum of 62:4:3:1.5, andalusite, sillimanite and quartz sand join 800 pressure puddle mixers by mass ratio
In, in described particulate material, particle diameter is that the particulate material of 5～8mm quality accounting in all particulate material is preferably 34.04%；Described
In particulate material, particle diameter is that the particulate material of 3～5mm quality accounting in all particulate material is preferably 25.53%；Described particulate material
Middle particle diameter is that the particulate material of 1～3mm quality accounting in all particulate material is preferably 14.18%；Particle diameter in described particulate material
Be 0.088～1mm particulate material quality accounting in all particulate material be preferably 26.24%；Above-mentioned Brown Alundum, andalusite,
Sillimanite and quartz sand are first dry mixed 1 minute, then are added thereto to above-mentioned vacuum stirring mud mixed grind 6min, add remaining fine powder
Part, i.e. mass ratio are the plate diamond spar fine powder of 10.5:8:4, carbide fine powder and calcining alpha-aluminium oxide micropowder, mix 16min,
Discharging, obtains pug；
Being poured into by pug in above-mentioned plaster master, charging limit, limit vibrates, and after 3～4min, then will be equipped with the Gypsum Fibrosum of pug
Master mold is placed on centrifuge and carries out centrifugal forming, and centrifugal speed during described centrifugal forming is 1400rpm, and centrifugation time is
4.5min, obtains adobe；
Above-mentioned adobe is carried out at 20～140 DEG C infrared drying 36hr；Then at 125.4m tunnel furnace air gas
Burning till under atmosphere, the temperature burnt till is 1480 DEG C, and the time burnt till is 12 hours, obtains monomer brick, is entered by described monomer brick
Row cuts processing, then is combined assembling, obtains tuyere combined brick.Described tuyere combined brick is carried out performance detection, detection knot
Fruit is as shown in table 1.
As seen from the above embodiment, the invention provides a kind of refractory material, the raw material including following components prepare: grain
Footpath be 0.088～8mm particulate material 66～76 weight portion and particle diameter more than 0 less than fine powder 24～34 weight portion of 0.088mm；Institute
State particulate material and include that mass ratio is 50～70:3～7:2～the Brown Alundum of 6:1～3, andalusite, sillimanite and quartz sand；Described
Fine powder include mass ratio be 7～11:5～9:3～the schmigel of 7:2～6:2～6, carborundum powder, calcining alpha-aluminium oxide micropowder, two
Ultrafine silica powder and mullite raw meal powder.Refractory material and tuyere combined brick that the present invention provides are former based on granule closestpacking
Reason and micropowder technology, use moulded, slurry vacuum stirring and vibration centrifugal moulding process, be main with corundum and carborundum
Raw material, improves refractory material with andalusite, sillimanite, quartz sand, calcining alpha-aluminium oxide micropowder, silicon powder and mullite raw meal powder
Crystal phase structure, reduce the apparent porosity of refractory material and reduce air vent aperture so that refractory material and the group of tuyere combined brick
Knit even structure, without slabbing, compactness is high, and intensity is high, thus improves refractory material and the antiscour of tuyere combined brick, anti-slag resist
Alkalescence, non-oxidizability, wear-resisting and thermal shock resistance.Test result indicate that: air port group prepared by the refractory material that the present invention provides
The apparent porosity closing brick is 8～10%；Bulk density is 3.1～3.25g/cm3；Pressure is 151～184MPa；Reheating rate of change
For+0.04～+0.11%；Refractoriness >=1790 DEG C；Load softening point is 1650～1700 DEG C；Creep rate be 0.24～
0.61%；Thermal shock resistance is 52～71 times；Iron-resistant water melting erosion rate increases is 1.0～1.5%；Resistance to slag is 8～10%；Alkali resistance is
8～11%；Non-oxidizability is 0.006～0.008g/cm2；Wearability is 2.1～3.8cm3。
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (9)
1. a refractory material, is prepared by the raw material including following components:
Particle diameter is particulate material 66～76 weight portion of 0.088～8mm；
It is more than 0 fine powder 24～34 weight portion less than 0.088mm with particle diameter；
Described particulate material includes that mass ratio is 50～70:3～7:2～the Brown Alundum of 6:1～3, andalusite, sillimanite and quartz
Sand；Fine powder includes that mass ratio is 7～11:5～9:3～the schmigel of 7:2～6:2～6, carborundum powder, calcining alpha-aluminium oxide are micro-
Powder, fine silica powder and mullite raw meal powder.
Refractory material the most according to claim 1, it is characterised in that described particulate material includes the granule that particle diameter is 5～8mm
Material and particle diameter are the particulate material of 3～5mm；
Described particle diameter be the particulate material of 5～8mm quality accounting in all particulate material be 32%～42%；
Described particle diameter be the particulate material of 3～5mm quality accounting in all particulate material be 18%～28%.
Refractory material the most according to claim 1, it is characterised in that described particulate material includes the granule that particle diameter is 1～3mm
Material and particle diameter are the particulate material of 0.088～1mm；
Described particle diameter be the particulate material of 1～3mm quality accounting in all particulate material be 9%～19%；
Described particle diameter be the particulate material of 0.088～1mm quality accounting in all particulate material be 21%～31%.
Refractory material the most according to claim 1, it is characterised in that the bulk density >=3.8g/cm of described Brown Alundum3, palm fibre
The microhardness of corundum is 1800～2000；
Bulk density >=the 3.2g/cm of described carborundum3, the Mohs' hardness of carborundum is 9.2.
5. a tuyere combined brick, is prepared by following methods:
By the fine silica powder of 2～6 weight portions, 2～6 mullite raw meal powder, 0.05～0.35 the subtracting of weight portion of weight portion
Water preparation and the water for ball milling of 4～8 weight portions, obtain mud；Then by the granule that particle diameter is 0.088～8mm of 66～76 weight portions
Material, the particle diameter of remaining weight portion are less than fine powder and the mixing of above-mentioned mud of 0.088mm more than 0, obtain pug；Described particulate material bag
Including mass ratio is 50～70:3～7:2～the Brown Alundum of 6:1～3, andalusite, sillimanite and quartz sand；Remaining fine powder includes matter
Amount is than schmigel, carborundum powder and the calcining alpha-aluminium oxide micropowder being 7～11:5～9:3～7；
Described pug is poured in plaster master and carries out vibration centrifugal molding, obtain adobe；
Described adobe is dried and burns till, then carries out cutting and combining assembling, obtain tuyere combined brick.
Tuyere combined brick the most according to claim 5, it is characterised in that described in the temperature burnt till be 1470 DEG C～1480
℃；The described time burnt till is 12～14 hours.
Tuyere combined brick the most according to claim 5, it is characterised in that vacuum stirring will be carried out before described mud dispensing；
The speed of described vacuum stirring is 35～38rpm；The time of described vacuum stirring is 60～90min.
Tuyere combined brick the most according to claim 5, it is characterised in that centrifugal speed during described centrifugal forming is 1400
～1500rpm；Centrifugation time during described centrifugal forming is 4～5min.
Tuyere combined brick the most according to claim 5, it is characterised in that the apparent porosity of described tuyere combined brick be 8～
10%；The density of tuyere combined brick is 3.10～3.25g/cm3。
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107188548A (en) * | 2017-07-14 | 2017-09-22 | 山东耐材集团鲁耐窑业有限公司 | Abrasive brick and preparation method thereof |
| CN107954699A (en) * | 2017-12-23 | 2018-04-24 | 洛阳名力科技开发有限公司 | A kind of refractory material for adding silicon nitride |
| CN110590343A (en) * | 2019-10-10 | 2019-12-20 | 山东铭特陶瓷材料有限公司 | Square crucible for casting molding and preparation method thereof |
| CN111747736A (en) * | 2020-07-13 | 2020-10-09 | 马鞍山钢铁股份有限公司 | Preparation method of complex-phase oxidation-resistant quenching-resistant chute support brick |
| CN112250455A (en) * | 2020-10-30 | 2021-01-22 | 德清县钢友耐火材料有限公司 | High-temperature refractory material and manufacturing process method thereof |
| CN114920570A (en) * | 2022-05-16 | 2022-08-19 | 湖南湘钢瑞泰科技有限公司 | Hot air pipeline three-fork combined brick and preparation method thereof |
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| CN103435361A (en) * | 2013-08-19 | 2013-12-11 | 濮阳濮耐高温材料（集团）股份有限公司 | High-wear-proof high-thermal-shock-resistant fire-proof material and prefabricated furnace mouth part made from same |
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| CN103224401A (en) * | 2012-09-27 | 2013-07-31 | 中冶武汉冶金建筑研究院有限公司 | Energy-efficient sol combined mullite castable used for blast furnace air supply branch pipe inner liner |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107188548A (en) * | 2017-07-14 | 2017-09-22 | 山东耐材集团鲁耐窑业有限公司 | Abrasive brick and preparation method thereof |
| CN107954699A (en) * | 2017-12-23 | 2018-04-24 | 洛阳名力科技开发有限公司 | A kind of refractory material for adding silicon nitride |
| CN110590343A (en) * | 2019-10-10 | 2019-12-20 | 山东铭特陶瓷材料有限公司 | Square crucible for casting molding and preparation method thereof |
| CN111747736A (en) * | 2020-07-13 | 2020-10-09 | 马鞍山钢铁股份有限公司 | Preparation method of complex-phase oxidation-resistant quenching-resistant chute support brick |
| CN112250455A (en) * | 2020-10-30 | 2021-01-22 | 德清县钢友耐火材料有限公司 | High-temperature refractory material and manufacturing process method thereof |
| CN114920570A (en) * | 2022-05-16 | 2022-08-19 | 湖南湘钢瑞泰科技有限公司 | Hot air pipeline three-fork combined brick and preparation method thereof |
| CN114988727A (en) * | 2022-06-22 | 2022-09-02 | 广东韶钢松山股份有限公司 | Double-chamber kiln heat insulation lining and process method |
| CN116041076A (en) * | 2022-12-30 | 2023-05-02 | 安徽海螺暹罗耐火材料有限公司 | Production process and application of high-wear-resistance silicon mullite brick |
| CN116041076B (en) * | 2022-12-30 | 2024-05-28 | 安徽海螺暹罗耐火材料有限公司 | Production process and application of high-wear-resistance silicon mullite brick |
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| Publication number | Publication date |
|---|---|
| CN105859308B (en) | 2018-09-07 |
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Inventor after: Zhu Xinjun Inventor after: Tang Anshan Inventor after: Zeng Limin Inventor after: Liu Lihua Inventor after: Zeng Kun Inventor before: Zhu Xinjun Inventor before: Tang Anshan Inventor before: Zeng Liming Inventor before: Liu Lihua Inventor before: Zeng Kun |