CN108178640A - It is a kind of using graphite microspheres as aluminium carbon castable of carbon source and preparation method thereof - Google Patents

It is a kind of using graphite microspheres as aluminium carbon castable of carbon source and preparation method thereof Download PDF

Info

Publication number
CN108178640A
CN108178640A CN201810032096.8A CN201810032096A CN108178640A CN 108178640 A CN108178640 A CN 108178640A CN 201810032096 A CN201810032096 A CN 201810032096A CN 108178640 A CN108178640 A CN 108178640A
Authority
CN
China
Prior art keywords
carbon
castable
graphite microspheres
carbon source
aluminium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201810032096.8A
Other languages
Chinese (zh)
Inventor
张海军
李赛赛
张少伟
刘江昊
王军凯
葛胜涛
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan University of Science and Engineering WUSE
Wuhan University of Science and Technology WHUST
Original Assignee
Wuhan University of Science and Engineering WUSE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan University of Science and Engineering WUSE filed Critical Wuhan University of Science and Engineering WUSE
Priority to CN201810032096.8A priority Critical patent/CN108178640A/en
Publication of CN108178640A publication Critical patent/CN108178640A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
    • 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
    • C04B2235/32—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
    • 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
    • C04B2235/34—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
    • 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
    • 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
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/422—Carbon
    • C04B2235/425—Graphite
    • 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
    • C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
    • C04B2235/449—Organic acids, e.g. EDTA, citrate, acetate, oxalate

Abstract

The present invention relates to a kind of using graphite microspheres as aluminium carbon castable of carbon source and preparation method thereof.Its technical solution is：Using the aluminous cement of the Brown Alundum of 40~70wt%, the silicon carbide of 15~35wt%, the active alpha alumina powder of 3~15wt%, the silica flour of 1~7wt%, the graphite microspheres of 1~7wt% and 2~6wt% as raw material, mixing, the polycarboxylic acid of the additional 0.1~0.3wt% of raw material again, it stirs evenly to get the aluminium carbon castable using graphite microspheres as carbon source.After testing：Slamp value is 210~240cm；Bulk density is 2.85~3.10g/cm3；Cold crushing strength is 41.5~47.7MPa；Strength at normal temperature is 6.5~10.6MPa；Apparent porosity is 10.5~14%.Anti- folding compressive resistance, inoxidizability and thermal shock resistance after 1450 DEG C/3h processing are obviously improved.Prepared by the present invention using graphite microspheres as the aluminium carbon castable not only good fluidity of carbon source, and anti-folding compressive resistance, inoxidizability and thermal shock resistance significantly improve.

Description

It is a kind of using graphite microspheres as aluminium carbon castable of carbon source and preparation method thereof
Technical field
The invention belongs to aluminium carbon castable technical fields.More particularly to a kind of using graphite microspheres as the aluminium carbon castable of carbon source And preparation method thereof.
Background technology
Carbon composite refractory is widely used in steel industry with its unique mechanics and chemical property, main Carbon source is graphite.The addition of graphite not only assigns the excellent thermal shock resistance of refractory material and corrosion resistance, simultaneously as carbon can be with Additive A l or Si reaction generation Al in refractory material4C3With the ceramic enhancement phases such as SiC so that carbon composite refractory it is strong Degree and toughness greatly improve.But due to technologic, development of the carbonaceous material in terms of unsettingization is not very smoothly. The main problem for adding the carbon containing refractory of water moulding by casting is that the wetability between graphite and water is poor, and water is added in casting process Amount sharply increases, the compactness of product is caused to be deteriorated, inoxidizability it is not good enough.At present, carbon containing castable is generally using spherical drip Blueness is as carbon source, and still, pitch can block the stomata in castable in softening process, and then to the anti-spalling of castable It is unfavorable.In addition, pitch can not only generate carcinogenic gas in high temperature cabonization, environment is polluted, and can leave in the material more Stomata, increase the channel of slag infiltration, influence the resistance to slag of castable.
" magnesium carbon pouring material " (CN102503496.A) patented technology discloses the side that carbon is introduced in carbon containing castable Formula is addition graphite, carbon black, coke grain, spherical pitch etc..Lead to castable since the wetability of above-mentioned carbon and water is poor Amount of water is larger.Sample after moulding by casting is not fine and close enough, leads to inoxidizability and impermeabilisation scarce capacity.A kind of " novel master Iron runner castable " (CN201110044222.X) patented technology discloses and replaces pitch with modified Nano carbon dust, improves its antioxygen Change performance and carbon yield, moreover it is possible to anti-spalling during improvement baking, but thermal shock resistance is not satisfactory.
Invention content
The present invention is directed to overcome the deficiencies in the prior art, it is therefore an objective to provide a kind of not only good fluidity, and anti-folding is pressure-resistant, anti- Oxidisability and thermal shock resistance are excellent using graphite microspheres as aluminium carbon castable of carbon source and preparation method thereof.
To achieve the above object, the technical solution adopted by the present invention is：With the Brown Alundum of 40~70wt%, 15~35wt% Silicon carbide, active alpha-alumina powder of 3~15wt%, the silica flour of 1~7wt%, the graphite microspheres of 1~7wt% and 2~ The aluminous cement of 6wt% is raw material, mixing, then the polycarboxylic acid of the additional 0.1~0.3wt% of raw material, is stirred evenly, i.e., It is able to the aluminium carbon castable that graphite microspheres are carbon source.
The Al of the Brown Alundum2O3Content >=94wt%；The grain composition of the Brown Alundum is：Grain size is less than 8mm and is more than 25~35wt% of Brown Alundum is accounted for equal to 5mm, grain size is less than 5mm and accounts for 25~35wt% of Brown Alundum more than or equal to 3mm, and grain size is less than 3mm and account for 30~50wt% of Brown Alundum more than or equal to 1mm.
SiC content >=97wt% of the silicon carbide；The grain composition of the silicon carbide is：Grain size is less than 1mm and is more than 20~30wt% of silicon carbide is accounted for equal to 0.074mm；Grain size be less than 0.074mm and more than or equal to 0.044mm account for silicon carbide 20~ 30wt%；Grain size accounts for 40~60wt% of silicon carbide less than 0.044mm.
The Al of the active alpha-alumina powder2O3Content >=98wt%, grain size≤2 μm of active alpha-alumina powder.
Content >=98wt% of the Si of the silica flour, grain size≤10 μm of silica flour.
C content >=97wt% of the graphite microspheres；Grain size≤1 μm of graphite microspheres.
Due to the adoption of the above technical scheme, the present invention has the positive effect that compared with prior art：
1st, the graphite microspheres that use of the present invention are the spherical graphite carbon materials that a kind of grain size is less than 1 μm, degree of graphitization High, particle diameter distribution uniformly, good dispersion and sphericity it is high, therefore the aluminium carbon castable mobility using graphite microspheres as carbon source increase, Amount of water reduces and inoxidizability is high.
2nd, the aluminium carbon castable using graphite microspheres as carbon source prepared by the present invention, amount of water are 4~6wt% of raw material, are mixed Close uniform, vibrate pouring molding, room temperature conserves 24~30h, demoulding, under the conditions of 100~120 DEG C it is dry for 24 hours, after testing：Stream Dynamic value is 210~240cm；Bulk density is 2.85~3.10g/cm3；Cold crushing strength is 41.5~47.7MPa；Room temperature resists Folding intensity is 6.5~10.6MPa；Apparent porosity is 10.5~14%.3h is kept the temperature under the conditions of air atmosphere and 1450 DEG C, through inspection It surveys：Bulk density is 2.85~3.07g/cm3；Cold crushing strength is 80.5~94.7MPa；Strength at normal temperature for 12.1~ 16.2MPa；Apparent porosity is 12~15%；Anti- folding compressive resistance, inoxidizability and thermal shock after 1450 DEG C/3h processing are stablized Property is obviously improved.
Therefore, prepared by the present invention using graphite microspheres as the aluminium carbon castable not only good fluidity of carbon source, and anti-folding is resistance to Compressive Strength, inoxidizability and thermal shock resistance significantly improve.
Specific embodiment
The present invention will be further described With reference to embodiment, not to the limit of the scope of the present invention System.
It is first that the present embodiment technical parameter Unify legislation to be related to is as follows to avoid repeating, in embodiment It will not repeat：
The Al of the Brown Alundum2O3Content >=94wt%；The grain composition of the Brown Alundum is：Grain size is less than 8mm and is more than 25~35wt% of Brown Alundum is accounted for equal to 5mm, grain size is less than 5mm and accounts for 25~35wt% of Brown Alundum more than or equal to 3mm, and grain size is less than 3mm and account for 30~50wt% of Brown Alundum more than or equal to 1mm.
SiC content >=97wt% of the silicon carbide；The grain composition of the silicon carbide is：Grain size is less than 1mm and is more than 20~30wt% of silicon carbide is accounted for equal to 0.074mm；Grain size be less than 0.074mm and more than or equal to 0.044mm account for silicon carbide 20~ 30wt%；Grain size accounts for 40~60wt% of silicon carbide less than 0.044mm.
The Al of the active alpha-alumina powder2O3Content >=98wt%, grain size≤2 μm of active alpha-alumina powder.
Content >=98wt% of the Si of the silica flour, grain size≤10 μm of silica flour.
C content >=97wt% of the graphite microspheres；Grain size≤1 μm of graphite microspheres.
Embodiment 1
It is a kind of using graphite microspheres as aluminium carbon castable of carbon source and preparation method thereof.With the Brown Alundum of 40~45wt%, 32 Silicon carbide, active alpha-alumina powder of 13~15wt%, the silica flour of 1~2wt%, the graphite of 6~7wt% of~35wt% is micro- The aluminous cement of ball and 2~3wt% are raw material, mixing, then the polycarboxylic acid of the additional 0.1~0.2wt% of raw material, are stirred Uniformly to get to the aluminium carbon castable using graphite microspheres as carbon source.
This example prepare using graphite microspheres as the aluminium carbon castable of carbon source, amount of water be raw material 5~6wt%, mixing Uniformly, pouring molding is vibrated, room temperature conserves 24~30h, and demoulding is dried for 24 hours, after testing under the conditions of 100~120 DEG C：Flowing It is worth for 210~230cm；Bulk density is 2.90~2.95g/cm3；Cold crushing strength is 41.5~42.6MPa；The anti-folding of room temperature Intensity is 6.5~7.6MPa；Apparent porosity is 13~14%.3h is kept the temperature under the conditions of air atmosphere and 1450 DEG C, after testing：Body Product density is 2.85~2.92g/cm3；Cold crushing strength is 80.5~90.3MPa；Strength at normal temperature for 12.1~ 13.7MPa；Apparent porosity is 14~15%；1450 DEG C/3h treated anti-folding compressive resistance, inoxidizability and thermal shock resistances It is obviously improved.
Embodiment 2
It is a kind of using graphite microspheres as aluminium carbon castable of carbon source and preparation method thereof.With the Brown Alundum of 45~50wt%, 30 Silicon carbide, active alpha-alumina powder of 11~13wt%, the silica flour of 2~3wt%, the graphite of 5~6wt% of~32wt% is micro- The aluminous cement of ball and 2~3wt% are raw material, mixing, then the polycarboxylic acid of the additional 0.1~0.2wt% of raw material, are stirred Uniformly to get to the aluminium carbon castable using graphite microspheres as carbon source.
This example prepare using graphite microspheres as the aluminium carbon castable of carbon source, amount of water be raw material 4.5~5.5wt%, Be uniformly mixed, vibrate pouring molding, room temperature conserves 24~30h, demoulding, under the conditions of 100~120 DEG C it is dry for 24 hours, after testing：Stream Dynamic value is 215~230cm；Bulk density is 2.97~3.07g/cm3；Cold crushing strength is 42.3~44.2MPa；Room temperature resists Folding intensity is 7.2~8.1MPa；Apparent porosity is 12~13%.3h is kept the temperature under the conditions of air atmosphere and 1450 DEG C, after testing： Bulk density is 2.95~3.05g/cm3；Cold crushing strength is 82.4~85.7MPa；Strength at normal temperature for 13.2~ 14.4MPa；Apparent porosity is 13~14%；1450 DEG C/3h treated anti-folding compressive resistance, inoxidizability and thermal shock resistances It improves more apparent.
Embodiment 3
It is a kind of using graphite microspheres as aluminium carbon castable of carbon source and preparation method thereof.With the Brown Alundum of 50~55wt%, 26 Silicon carbide, active alpha-alumina powder of 9~11wt%, the silica flour of 3~4wt%, the graphite of 4~5wt% of~30wt% is micro- The aluminous cement of ball and 3~4wt% are raw material, mixing, then the polycarboxylic acid of the additional 0.2~0.3wt% of raw material, are stirred Uniformly to get to the aluminium carbon castable using graphite microspheres as carbon source.
This example prepare using graphite microspheres as the aluminium carbon castable of carbon source, amount of water be raw material 4.0~5.0wt%, Be uniformly mixed, vibrate pouring molding, room temperature conserves 24~30h, demoulding, under the conditions of 100~120 DEG C it is dry for 24 hours, after testing：Stream Dynamic value is 220~235cm；Bulk density is 2.97~3.10g/cm3；Cold crushing strength is 44.2~46.7MPa；Room temperature resists Folding intensity is 8.7~9.6MPa；Apparent porosity is 11~12%.3h is kept the temperature under the conditions of air atmosphere and 1450 DEG C, after testing： Bulk density is 2.92~2.97g/cm3；Cold crushing strength is 92.4~94.7MPa；Strength at normal temperature for 12.9~ 13.8MPa；Apparent porosity is 12~13%；1450 DEG C/3h treated anti-folding compressive resistance, inoxidizability and thermal shock resistances It improves more apparent.
Embodiment 4
It is a kind of using graphite microspheres as aluminium carbon castable of carbon source and preparation method thereof.With the Brown Alundum of 55~60wt%, 22 The silicon carbide of~26wt%, active alpha-alumina powder of 7~9wt%, the silica flour of 4~5wt%, 3~4wt% graphite microspheres Aluminous cement with 4~5wt% is raw material, mixing, then the polycarboxylic acid of the additional 0.2~0.3wt% of raw material, and stirring is equal It is even to get to the aluminium carbon castable using graphite microspheres as carbon source.
This example prepare using graphite microspheres as the aluminium carbon castable of carbon source, amount of water be raw material 4.0~5.0wt%, Be uniformly mixed, vibrate pouring molding, room temperature conserves 24~30h, demoulding, under the conditions of 100~120 DEG C it is dry for 24 hours, after testing：Stream Dynamic value is 220~235cm；Bulk density is 3.0~3.1g/cm3；Cold crushing strength is 45.2~47.7MPa；The anti-folding of room temperature Intensity is 9.7~10.6MPa；Apparent porosity is 11~12%.3h is kept the temperature under the conditions of air atmosphere and 1450 DEG C, after testing： Bulk density is 2.95~3.0g/cm3；Cold crushing strength is 90.2~93.7MPa；Strength at normal temperature for 13.2~ 14.8MPa；Apparent porosity is 12~13%；1450 DEG C/3h treated anti-folding compressive resistance, inoxidizability and thermal shock resistances It improves more apparent.
Embodiment 5
It is a kind of using graphite microspheres as aluminium carbon castable of carbon source and preparation method thereof.With the Brown Alundum of 60~65wt%, 19 The silicon carbide of~22wt%, active alpha-alumina powder of 5~7wt%, the silica flour of 5~6wt%, 2~3wt% graphite microspheres Aluminous cement with 4~5wt% is raw material, mixing, then the polycarboxylic acid of the additional 0.2~0.3wt% of raw material, and stirring is equal It is even to get to the aluminium carbon castable using graphite microspheres as carbon source.
This example prepare using graphite microspheres as the aluminium carbon castable of carbon source, amount of water be raw material 4.0~4.5wt%, Be uniformly mixed, vibrate pouring molding, room temperature conserves 24~30h, demoulding, under the conditions of 100~120 DEG C it is dry for 24 hours, after testing：Stream Dynamic value is 220~240cm；Bulk density is 3.05~3.15g/cm3；Cold crushing strength is 44.2~46.7MPa；Room temperature resists Folding intensity is 8.7~9.6MPa；Apparent porosity is 10.5~11.5%.3h is kept the temperature under the conditions of air atmosphere and 1450 DEG C, is passed through Detection：Bulk density is 2.97~3.05g/cm3；Cold crushing strength is 90.4~92.7MPa；Strength at normal temperature is 13.3 ~14.2MPa；Apparent porosity is 12~13%；1450 DEG C/3h treated anti-folding compressive resistances, inoxidizability and thermal shock are stablized Property improve it is more apparent.
Embodiment 6
It is a kind of using graphite microspheres as aluminium carbon castable of carbon source and preparation method thereof.With the Brown Alundum of 65~70wt%, 15 The silicon carbide of~19wt%, active alpha-alumina powder of 3~5wt%, the silica flour of 6~7wt%, 1~2wt% graphite microspheres Aluminous cement with 5~6wt% is raw material, mixing, then the polycarboxylic acid of the additional 0.2~0.3wt% of raw material, and stirring is equal It is even to get to the aluminium carbon castable using graphite microspheres as carbon source.
This example prepare using graphite microspheres as the aluminium carbon castable of carbon source, amount of water be raw material 4.0~5.0wt%, Be uniformly mixed, vibrate pouring molding, room temperature conserves 24~30h, demoulding, under the conditions of 100~120 DEG C it is dry for 24 hours, after testing：Stream Dynamic value is 220~240cm；Bulk density is 3.0~3.1g/cm3；Cold crushing strength is 43.2~45.7MPa；The anti-folding of room temperature Intensity is 8.9~10.5MPa；Apparent porosity is 11~12%.3h is kept the temperature under the conditions of air atmosphere and 1450 DEG C, after testing： Bulk density is 2.98~3.07g/cm3；Cold crushing strength is 91.4~94.7MPa；Strength at normal temperature for 15.3~ 16.2MPa；Apparent porosity is 12~13%；1450 DEG C/3h treated anti-folding compressive resistance, inoxidizability and thermal shock resistances It improves more apparent.
Present embodiment has following good effect compared with prior art：
1st, the graphite microspheres that present embodiment uses are that a kind of grain size is less than 1 μm of spherical graphite carbon material, stone Blackization degree is high, particle diameter distribution is uniform, good dispersion and sphericity are high, therefore the aluminium carbon castable using graphite microspheres as carbon source flows Property increase, amount of water reduces and inoxidizability is high.
2nd, present embodiment prepare using graphite microspheres as the aluminium carbon castable of carbon source, amount of water for raw material 4~ 6wt% is uniformly mixed, and vibrates pouring molding, and room temperature conserves 24~30h, demoulding, under the conditions of 100~120 DEG C it is dry for 24 hours, warp Detection：Slamp value is 210~240cm；Bulk density is 2.85~3.10g/cm3；Cold crushing strength for 41.5~ 47.7MPa；Strength at normal temperature is 6.5~10.6MPa；Apparent porosity is 10.5~14%.In air atmosphere and 1450 DEG C of items 3h is kept the temperature under part, after testing：Bulk density is 2.85~3.07g/cm3；Cold crushing strength is 80.5~94.7MPa；Room temperature Flexural strength is 12.1~16.2MPa；Apparent porosity is 12~15%；It is anti-folding compressive resistance after 1450 DEG C/3h processing, anti- Oxidisability and thermal shock resistance are obviously improved.
Therefore, prepared by present embodiment using graphite microspheres as the aluminium carbon castable not only good fluidity of carbon source, And anti-folding compressive resistance, inoxidizability and thermal shock resistance significantly improve.

Claims (7)

  1. It is 1. a kind of using graphite microspheres as the preparation method of the aluminium carbon castable of carbon source, it is characterised in that：With the palm fibre of 40~70wt% Corundum, the silicon carbide of 15~35wt%, active alpha-alumina powder of 3~15wt%, the silica flour of 1~7wt%, 1~7wt% The aluminous cement of graphite microspheres and 2~6wt% are raw material, mixing, then the polycarboxylic acids of the additional 0.1~0.3wt% of raw material Class is stirred evenly to get the aluminium carbon castable using graphite microspheres as carbon source.
  2. It is 2. according to claim 1 using graphite microspheres as the preparation method of the aluminium carbon castable of carbon source, it is characterised in that institute State the Al of Brown Alundum2O3Content >=94wt%；The grain composition of the Brown Alundum is：Grain size is less than 8mm and is accounted for more than or equal to 5mm 25~35wt% of Brown Alundum, grain size are less than 5mm and account for 25~35wt% of Brown Alundum more than or equal to 3mm, and grain size is less than 3mm and is more than 30~50wt% of Brown Alundum is accounted for equal to 1mm.
  3. It is 3. according to claim 1 using graphite microspheres as the preparation method of the aluminium carbon castable of carbon source, it is characterised in that institute State SiC content >=97wt% of silicon carbide；The grain composition of the silicon carbide is：Grain size is less than 1mm and more than or equal to 0.074mm Account for 20~30wt% of silicon carbide；Grain size is less than 0.074mm and 20~30wt% of silicon carbide is accounted for more than or equal to 0.044mm；Grain size 40~60wt% of silicon carbide is accounted for less than 0.044mm.
  4. It is 4. according to claim 1 using graphite microspheres as the preparation method of the aluminium carbon castable of carbon source, it is characterised in that institute State the Al of active alpha-alumina powder2O3Content >=98wt%, grain size≤2 μm of active alpha-alumina powder.
  5. It is 5. according to claim 1 using graphite microspheres as the preparation method of the aluminium carbon castable of carbon source, it is characterised in that institute State content >=98wt% of the Si of silica flour, grain size≤10 μm of silica flour.
  6. It is 6. according to claim 1 using graphite microspheres as the preparation method of the aluminium carbon castable of carbon source, it is characterised in that institute State C content >=97wt% of graphite microspheres；Grain size≤1 μm of graphite microspheres.
  7. It is 7. a kind of using graphite microspheres as the aluminium carbon castable of carbon source, it is characterised in that the aluminium carbon using graphite microspheres as carbon source pours Material feeding is according to the preparation method using graphite microspheres as the aluminium carbon castable of carbon source described in any one of claim 1~6 It is prepared using graphite microspheres as the aluminium carbon castable of carbon source.
CN201810032096.8A 2018-01-12 2018-01-12 It is a kind of using graphite microspheres as aluminium carbon castable of carbon source and preparation method thereof Withdrawn CN108178640A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810032096.8A CN108178640A (en) 2018-01-12 2018-01-12 It is a kind of using graphite microspheres as aluminium carbon castable of carbon source and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810032096.8A CN108178640A (en) 2018-01-12 2018-01-12 It is a kind of using graphite microspheres as aluminium carbon castable of carbon source and preparation method thereof

Publications (1)

Publication Number Publication Date
CN108178640A true CN108178640A (en) 2018-06-19

Family

ID=62550472

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810032096.8A Withdrawn CN108178640A (en) 2018-01-12 2018-01-12 It is a kind of using graphite microspheres as aluminium carbon castable of carbon source and preparation method thereof

Country Status (1)

Country Link
CN (1) CN108178640A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112441837A (en) * 2020-12-09 2021-03-05 安徽工业大学 High-performance (VNbTaMoW) C high-entropy carbide ceramic and preparation method thereof
CN112457017A (en) * 2020-12-09 2021-03-09 安徽工业大学 High-performance (TiTaHfZrNb) C high-entropy carbide ceramic and preparation method thereof
CN114835475A (en) * 2022-06-02 2022-08-02 中冶武汉冶金建筑研究院有限公司 Environment-friendly iron runner castable with excellent slag erosion resistance
CN115448738A (en) * 2022-09-05 2022-12-09 安徽工业大学 High-thermal-conductivity ultramicropore electrically-calcined coal-based carbon brick and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103011868A (en) * 2013-01-04 2013-04-03 武汉科技大学 Al2O3-SiC-C iron runner casting material and preparation method thereof
CN104072177A (en) * 2014-07-16 2014-10-01 武汉科技大学 Casting material containing carbon fiber for blast furnace tapping channel and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103011868A (en) * 2013-01-04 2013-04-03 武汉科技大学 Al2O3-SiC-C iron runner casting material and preparation method thereof
CN104072177A (en) * 2014-07-16 2014-10-01 武汉科技大学 Casting material containing carbon fiber for blast furnace tapping channel and preparation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李赛赛: ""催化制备石墨微球及其在Al2O3－SiC－C浇注料中的应"，李赛赛，《2017·武汉耐火材料学术年会摘要集》", 《2017·武汉耐火材料学术年会摘要集》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112441837A (en) * 2020-12-09 2021-03-05 安徽工业大学 High-performance (VNbTaMoW) C high-entropy carbide ceramic and preparation method thereof
CN112457017A (en) * 2020-12-09 2021-03-09 安徽工业大学 High-performance (TiTaHfZrNb) C high-entropy carbide ceramic and preparation method thereof
CN114835475A (en) * 2022-06-02 2022-08-02 中冶武汉冶金建筑研究院有限公司 Environment-friendly iron runner castable with excellent slag erosion resistance
CN115448738A (en) * 2022-09-05 2022-12-09 安徽工业大学 High-thermal-conductivity ultramicropore electrically-calcined coal-based carbon brick and preparation method thereof

Similar Documents

Publication Publication Date Title
CN108178640A (en) It is a kind of using graphite microspheres as aluminium carbon castable of carbon source and preparation method thereof
CN101531533B (en) Low carbon magnesia carbon brick and preparation method thereof
CN109320219B (en) High-performance aluminum-chromium refractory material and manufacturing method and application thereof
CN106588059B (en) Prefabricated member for lime rotary kiln and preparation method thereof
CN108863414B (en) High-performance magnesia carbon brick and preparation method thereof
CN108383504A (en) A kind of coverter pig magnesia carbon brick and preparation method thereof
CN106083075B (en) The restorative procedure of blast-furnace shaft upper inner liner wet spray material, its application and blast-furnace shaft upper inner liner
CN107973610A (en) A kind of carborundum ramming mass using discarded silicon carbide sagger as primary raw material
CN109836136A (en) A kind of low-carbon aluminium-magnesia carbon brick and preparation method thereof
CN104496502B (en) A kind of aluminate carbon brick containing aluminum chromium slag and preparation method thereof
CN101104565A (en) Composite ceramic powder, manufacturing method thereof and amoeboid refractory material
CN110451932A (en) A kind of Ladle slag line magnesia carbon brick
CN108218408A (en) A kind of Al4SiC4With reference to Al2O3The preparation method of SiC ceramic matrix composite material
KR20080070487A (en) Carbon containing eco-friendly refractory material composition
CN112456974B (en) Magnalium spinel brick for co-processing cement kiln and preparation method and application thereof
CN104261848A (en) Chrome-oxide-containing mullite brick and preparation method thereof
US2636826A (en) Silicon carbide refractory
CN108395218A (en) A kind of low carbon magnesia carbon brick and preparation method thereof prepared using modified magnesia
CN110563449A (en) Environment-friendly magnesia-carbon gunning mix for RH furnace and preparation method thereof
CN108640694A (en) A kind of enhancing magnesia carbon brick and preparation method thereof introducing complex phase additive
CN113880562A (en) Organic silicon resin combined high-temperature fired aluminum-zirconium-carbon sliding plate brick containing nickel-aluminum alloy and production method thereof
CN105777160B (en) A kind of ladle slag line MgO-Cr7C3Brick and preparation method thereof
CN113061045B (en) Magnesium-iron-zinc-aluminum composite spinel refractory brick for cement kiln burning zone and preparation method thereof
CN109279906A (en) A kind of castable and preparation method thereof
CN108178646A (en) Wear-resistant castable for metallurgical residues processing technique and preparation method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WW01 Invention patent application withdrawn after publication
WW01 Invention patent application withdrawn after publication

Application publication date: 20180619