CN108585806A - The method for manufacturing magnalium carbon refractory brick using regenerative magnesia-carbon brick and aluminium-magnesia carbon brick - Google Patents
The method for manufacturing magnalium carbon refractory brick using regenerative magnesia-carbon brick and aluminium-magnesia carbon brick Download PDFInfo
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- CN108585806A CN108585806A CN201810617847.2A CN201810617847A CN108585806A CN 108585806 A CN108585806 A CN 108585806A CN 201810617847 A CN201810617847 A CN 201810617847A CN 108585806 A CN108585806 A CN 108585806A
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- magnesia
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- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 83
- 239000011449 brick Substances 0.000 title claims abstract description 78
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 68
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000000395 magnesium oxide Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 23
- 229910001051 Magnalium Inorganic materials 0.000 title claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 41
- 238000000465 moulding Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 7
- 239000000654 additive Substances 0.000 claims abstract description 5
- 230000000996 additive effect Effects 0.000 claims abstract description 5
- 235000019580 granularity Nutrition 0.000 claims description 40
- 239000002699 waste material Substances 0.000 claims description 29
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 25
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims description 16
- 239000007767 bonding agent Substances 0.000 claims description 14
- OJMOMXZKOWKUTA-UHFFFAOYSA-N aluminum;borate Chemical compound [Al+3].[O-]B([O-])[O-] OJMOMXZKOWKUTA-UHFFFAOYSA-N 0.000 claims description 12
- 239000001095 magnesium carbonate Substances 0.000 claims description 12
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 12
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 12
- 235000014380 magnesium carbonate Nutrition 0.000 claims description 12
- 230000008929 regeneration Effects 0.000 claims description 12
- 238000011069 regeneration method Methods 0.000 claims description 12
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 12
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 12
- 239000011331 needle coke Substances 0.000 claims description 11
- 239000010439 graphite Substances 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- 239000010426 asphalt Substances 0.000 claims description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 229910052810 boron oxide Inorganic materials 0.000 claims description 5
- 229920001568 phenolic resin Polymers 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 3
- 239000003595 mist Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 claims description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical group [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 2
- 229910018134 Al-Mg Inorganic materials 0.000 claims description 2
- 229910018467 Al—Mg Inorganic materials 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 239000003963 antioxidant agent Substances 0.000 claims description 2
- 230000003078 antioxidant effect Effects 0.000 claims description 2
- 229910052593 corundum Inorganic materials 0.000 claims description 2
- 239000012467 final product Substances 0.000 claims description 2
- 238000004898 kneading Methods 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims 1
- 239000004327 boric acid Substances 0.000 claims 1
- 229910052796 boron Inorganic materials 0.000 claims 1
- 238000005096 rolling process Methods 0.000 claims 1
- 239000002994 raw material Substances 0.000 abstract description 7
- 230000035939 shock Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000011819 refractory material Substances 0.000 abstract description 2
- 238000009776 industrial production Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 28
- 230000008901 benefit Effects 0.000 description 6
- 239000011812 mixed powder Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000012615 aggregate Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000005011 phenolic resin Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000002742 anti-folding effect Effects 0.000 description 1
- 230000003026 anti-oxygenic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 238000009766 low-temperature sintering Methods 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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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
- C04B35/103—Refractories from grain sized mixtures containing non-oxide refractory materials, e.g. carbon
-
- 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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
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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
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
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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
- C04B2235/34—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
- C04B2235/3409—Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax
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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
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
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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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
- C04B2235/422—Carbon
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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
- C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
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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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5276—Whiskers, spindles, needles or pins
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
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- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
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Abstract
The invention belongs to technical field of refractory materials more particularly to a kind of methods manufacturing magnalium carbon refractory brick using regenerative magnesia-carbon brick and aluminium-magnesia carbon brick.This method includes the following steps：Step 1, prepare aggregate；Step 2, premixed powder is prepared；Step 3, it is kneaded；Step 4, moulding process；Step 5, dry.This method is simultaneously using regenerative magnesia-carbon brick and aluminium-magnesia carbon brick as primary raw material, add part efficient additive, in the case where not changing existing production technology, developing a kind of aluminium-magnesia carbon brick has that high temperature intensity is good, bulk density is high, anti-erosion, good in thermal shock carry out the industrial production that routinizes using the implementation of existing equipment.
Description
Technical field
The invention belongs to technical field of refractory materials more particularly to a kind of utilization regenerative magnesia-carbon brick and aluminium-magnesia carbon brick to manufacture magnalium carbon
The method of refractory brick.
Background technology
In recent years, as national authorities increase environmentally friendly management, the enterprise for causing some environmental protection not up to standard stops production,
Cause ore resource and the refractory raw material source of goods seriously nervous, fireproof raw material rise in price is exceedingly fast, and gives refractory product manufacturing enterprise
Caused by significant cost and operated pressure, the influence to refractory industry entirety production run order is serious, and enterprise will be at
Core of this management as business administration is strengthened cost management, the important hand for reducing cost is had become using reclaiming raw material
One of section to environmental protection and is economized on resources and also functions to prodigious effect, be to benefit the nation and the people in addition, the recycling of waste product
Good thing.
Regeneration research work to waste magnesia carbon brick, aluminium-magnesia carbon brick, resistance to material worker have extensive research, respectively have each
Tricks of the trade, the product of production also uses in steel mill's Thermal Equipment, but with respect to no reworked material product for, using be the service life relatively
Low, stability is poor, and the research of different reworked materials is added and document is not yet found simultaneously in identical product.The wound of the present invention
The property made is using the pretreated waste magnesia carbon brick of company, aluminium-magnesia carbon brick as primary raw material while using, then adds part efficiently
Additive produces, simple for process, operability to improve aluminium-magnesia carbon brick high-temperature behavior according still further to the production method of traditional handicraft
By force, low cost is produced, the aluminium-magnesia carbon brick of stable quality creates the economic benefit of bigger.
Invention content
The purpose of the present invention is using regenerative magnesia-carbon brick and aluminium-magnesia carbon brick as primary raw material, add part efficiently simultaneously
Additive develops a kind of preparation method of aluminium-magnesia carbon brick, during which has in the case where not changing existing production technology
Elevated temperature strength is good, bulk density is high, anti-erosion, good in thermal shock, implements to carry out conventional chemical industry using existing equipment
Industry produces.
To achieve the goals above, the technical solution of offer of the invention is as follows：Magnalium carbon fire resisting is manufactured using reworked material
The method of brick, includes the following steps：
Step 1, prepare aggregate, the component containing following parts by weight：
Make regenerative magnesia-carbon brick waste material, the 10%-30% of granularity 1-8mm by oneself, granularity is the 5%-15% of 0.1-1mm；From preparation, regeneration
Aluminium-magnesia carbon brick waste material, the 15-40% of granularity 1-8mm, granularity are the 5%-15% of 0.1-1mm；Fused magnesite, granularity 0.1-
The 5%-10% of 1mm.
Step 2, premixed powder is prepared, by the component mixing for standby use of following parts by weight：
The fused magnesite fine powder 5%-10% that granularity is 10 μm -88 μm；The white fused alumina fine powder 5-15% that granularity is 1 μm -44 μm；
Specialist additive:Make aluminium borate whisker 0.5-5% by oneself, nano level silicon carbide micro-powder 2-5%, 5 μm of calcined alumina is micro-
Powder 1-2%.A diameter of 1-1.5 μm of the aluminium borate whisker, average length are 20-50 μm.
Help bonding agent：Asphalt powder 0.5-1%；The boric anhydride 0.1-0.5%, needle coke 1-2% that granularity is 30 μm -88 μm.
Antioxidant 1%~5%.
Step 3, mixing sequence：By the aggregate of step 1, step 2 premixed powder and account for gross weight 1-5% granularities be 100 mesh stone
Ink is added sequentially in muller, and low speed is kneaded 2-3 minutes, adds the additional bonding agent low speed kneading for accounting for gross weight 2.8%-3%
5-8 minutes, then be kneaded 15-20 minutes at a high speed.
Step 4, moulding process：Pug takes out after being kneaded in step 3, according to the regulation of " 3 light 5 weight ", is hit into
Type forms adobe, and adobe density is 2.95-3.3g/cm3 after molding；
Step 5, dry：After 180-220 DEG C of temperature drying for 24 hours by the molding adobe in step 4 to obtain the final product.
The self-control regenerative magnesia-carbon brick and aluminium-magnesia carbon brick waste material of the step 1 are reworked materials by sorting crushing, aquation, doing
It is dry, roll, sieve etc. made from processes.
Preferably, the antioxidant described in step 2 is one in metallic silicon power, Al-Mg alloy powder or metallic aluminium powder
Kind or two kinds of mixtures.
Preferably, the method for making aluminium borate whisker described in step 2 by oneself is by aluminium oxide and boron oxide 1200~1300
It is reacted at DEG C, boron oxide plays the role of fluxing agent, obtains large scale aluminium borate whisker.The SiC of the nano level silicon carbide
Content is more than 95%；The Al2O3 contents of described 5 μm of calcined alumina micro mist are more than 99%.
Preferably, help the boron oxide content of boric anhydride in bonding agent more than or equal to the carbon of 95%, needle coke described in step 2
Content is more than 98.5%.
Preferably, the additional bonding agent as described in step 3 is phenol-formaldehyde resin modified.
Preferably, carbon content is more than or equal to 95% in the graphite as described in step 3,
Preferably, the self-control regenerative magnesia-carbon brick waste material, self-control regeneration aluminium-magnesia carbon brick waste material, fused magnesite, white fused alumina index
As shown in table 1：
Compared with prior art, what the present invention was brought has the beneficial effect that：
By the way that aluminium borate whisker, needle coke, silicon carbide micro-powder is added simultaneously, formed under using hot conditions interspersed vertical mutually
Body reticular structure enhances the elevated temperature strength of product, improves thermal shock resistance；Aluminium oxide differential, boric anhydride filled articles it is micro-
Spilehole enhances its compactness, and low-temperature sintering also just improves permeability resistance, the corrosion resistance of product.
The benefit used as primary raw material using regenerative magnesia-carbon brick and aluminium-magnesia carbon brick is repeated no more；
1, using needle coke after asphalt carbonization and the interphase special construction characteristic of graphite, the knot of its existing part pitch
Mixture property, and have the characteristic that the purity of graphite is high, resistivity is small, coefficient of thermal expansion is small, impact resistance is strong, and itself
Also have the advantages that high mechanical strength, antioxygenic property are good, consumption is low, therefore, add the refractory brick of needle coke with good
Slag penetration resistance can be with excellent thermal shock performance.
2, aluminium borate whisker, it is good with the wetability of magnesia at high temperature, it is connected to form the structure of bridge with magnesia particle,
Magnesia particle is constituted with boric acid salt bridge compared with dense protective layer, and the surface of closed article prevents the intrusion of oxygen, improves the heat of product
State intensity, the inoxidizability of enhanced article.
3, boric anhydride only has 450 DEG C because of its fusing point, and micro addition can ensure product when low medium temperature is toasted, and just melts
The surface pores of closed article prevents the intrusion of oxygen, ensures that the low medium temperature of product is not oxidized, in addition, boric anhydride, which also has, promotes magnesium
Emery dust, alumina powder form spinelle at a lower temperature, reduce the stomata of product, the strength characteristics of enhanced article, also can
When the normal temperature strength for helping bonding agent to use enhanced article.
4, silicon carbide micro-powder, which can not only play, prevents oxidation of coal, but also reticular structure, reinforced articles can be formed in applied at elevated temperature
The intensity of bonding agent resin carbochain increases the spalling resistance and high temperature break resistant intensity of product.
Using above-mentioned technical proposal, product is enable largely to use reclaiming waste material, not only reduces cost, but also environmental protection, moreover it is possible to
Ensure the performance of product.
Specific implementation mode
Embodiment 1：
The method for manufacturing magnalium carbon refractory brick using regenerative magnesia-carbon brick and aluminium-magnesia carbon brick, includes the following steps：
Make regenerative magnesia-carbon brick waste material, the 10%-30% of granularity 8-1mm by oneself, granularity is the 5%-15% of 0.1-1mm；From preparation, regeneration
Aluminium-magnesia carbon brick waste material, the 15-40% of granularity 8-1mm, granularity are the 5%-15% of 0.1-1mm；Fused magnesite, granularity 0.1-
The 5%-10% of 1mm
Specific proportioning is as follows：
Regenerative magnesia-carbon brick waste material granularity 8-1mm 10%, 0.1-1mm 5%；
Regenerate aluminium-magnesia carbon brick waste material granularity 8-1mm 45%, 0.1-1mm 10%；
Fused magnesite granularity 0.1m-1m 5%, 1 μm -74 μm 5%；
1-44 μm 8% of white alundum powder
Needle coke granularity 1.5%；100 mesh 2% of graphite particle size；
Asphalt powder 0.5%；200 mesh 1% of metallic silicon power；Nanometer silicon carbide 3%；
180 mesh 1% of metallic aluminium powder；A- alumina powders 1%；
Aluminium borate whisker 1.8%；Boric anhydride 0.2%；
Additional liquid phenolic resin bonding agent 3.2%,
After weighing according to the ratio, produced by following production technology.
1, preparation process is as follows：
1) aggregate, is prepared：Regenerative magnesia-carbon brick waste material granularity 8-1mm 10%, 0.1-1mm5%；Regenerative magnesia-carbon brick waste material granularity 8-1mm
45%, 0.1-1mm 10%；
2）Prepare premixed powder：Prepare mixed powder, according to the above ratio by fused magnesite fine powder, asphalt powder, aluminium powder, metallic silicon power,
The mixing of the fine powders such as aluminium borate whisker, boric anhydride, alumina powder and nanometer silicon carbide, it is spare；
3）It is kneaded：By step 1）With step 2）In aggregate and mixed powder, graphite 2%, needle coke 1.5% is added sequentially to muller
In, low speed is kneaded 2-3 minutes, then 3.2% additional bonding agent low speed is added to be kneaded 5-8 minutes, then high speed is kneaded 15-20 minutes；
4) pug is released from high speed mixing smelting machine after, being kneaded, and molding is hit in 1000T friction presses and forms adobe,
Between each adobe is hit 6-8 times during strike, adobe after molding；
5), tunnel kilning of the molding adobe Jing Guo 180-220 DEG C of temperature is copied 24 hours, you can magnalium carbon refractory brick is made.
Embodiment 2：
The method for manufacturing magnalium carbon refractory brick using regenerative magnesia-carbon brick and aluminium-magnesia carbon brick：
Make regenerative magnesia-carbon brick waste material, the 10%-30% of granularity 8-1mm by oneself, granularity is the 5%-15% of 0.1-1mm；From preparation, regeneration
Aluminium-magnesia carbon brick waste material, the 15-40% of granularity 8-1mm, granularity are the 5%-15% of 0.1-1mm；Fused magnesite, granularity 0.1-
The 5%-10% of 1mm
Specific proportioning：
Regenerative magnesia-carbon brick waste material granularity 8-1mm 10%, 0.1-1mm 3%；
Regenerate aluminium-magnesia carbon brick waste material granularity 8-1mm 42%, 0.1-1mm 5%；
Fused magnesite granularity 0.1m-1m 8%, 1 μm -74 μm 5%；
1-44 μm 10% of white alundum powder
Needle coke granularity 2%；100 mesh 4% of graphite particle size；
Asphalt powder 1.5%；200 mesh 1% of metallic silicon power；Nanometer silicon carbide 5%；
180 mesh 1% of metallic aluminium powder；A- alumina powders 1.5%；
Aluminium borate whisker 2.7%；Boric anhydride 0.3%；
Additional liquid phenolic resin bonding agent 3.3%,
After weighing according to the ratio, produced by following production technology.
1, preparation process is as follows：
1) aggregate, is prepared：Regenerative magnesia-carbon brick waste material granularity 8-1mm 10%, 0.1-1mm 3%；Regenerative magnesia-carbon brick waste material granularity 8-
1mm 42%, 0.1-1mm 5%；
2）Prepare premixed powder：Prepare mixed powder, according to the above ratio by fused magnesite fine powder, asphalt powder, aluminium powder, metallic silicon power,
The mixing of the fine powders such as aluminium borate whisker, boric anhydride, alumina powder and nanometer silicon carbide, it is spare；
3）It is kneaded：By step 1）With step 2）In aggregate and mixed powder, graphite 4%, needle coke 2% is added sequentially to muller
In, low speed is kneaded 2-3 minutes, then 3.1% additional bonding agent low speed is added to be kneaded 5-8 minutes, then high speed is kneaded 15-20 minutes；
4) pug is released from high speed mixing smelting machine after, being kneaded, and molding is hit in 1000T friction presses and forms adobe,
Between each adobe is hit 6-8 times during strike, adobe after molding；
5), tunnel kilning of the molding adobe Jing Guo 180-220 DEG C of temperature is copied 24 hours, you can magnalium carbon refractory brick is made.
Product index analysis：
The anti-folding of apparent porosity, bulk density, cold crushing strength, high temperature is detected by national standard, and thermal shock resistance is examined by smelting mark
It surveys, the data of conventional performance index detection are shown in Table 2：
1 product of embodiment is compared with common plus 30% regeneration material products 1 indexs.
The product that the embodiment of the present invention 1 produces contains 70% reworked material（Add regenerative magnesia-carbon brick waste material 15%, regeneration aluminium-magnesia carbon brick
Waste material 55%）Contain 30% reworked material with what company produced（Add regeneration aluminium-magnesia carbon brick waste material 30%）Aluminium-magnesia carbon brick comparison, the master of finished product
Want physical property as shown in table 2.
The data comparison from table：Two products are in same process, and in the case of 9%, product of the invention adds carbon content
The index of 70% reworked material adds the index of 30% aluminium-magnesia carbon brick of reworked material, compressive resistance, high temperature break resistant intensity, thermal shock than company original
Stability slightly improves.
It wraps using above two aluminium-magnesia carbon brick in the 100 tons of refinings of certain steel mill, from the point of view of actual effect, can reach 85 times
Requirement, but the present invention 10% or more cost reduction, economic benefit is apparent.
2 product of embodiment is compared with common plus 30% regeneration material products 2 indexs.
The magnalium of the product for 60% reworked material of addition that the embodiment of the present invention 2 produces and 30% reworked material of addition of company's production
Carbon brick compares the comparison of finished product index, and the Main physical performance of finished product is as shown in table 2.
The data comparison from table：Two products are in same process, and carbon content is in the case of 12%, product of the invention
Add the index that the index of 60% reworked material adds 30% aluminium-magnesia carbon brick of reworked material than company original, compressive resistance, high temperature break resistant intensity,
Thermal shock resistance slightly improves.
Above two aluminium-magnesia carbon brick is used on 120 tons of ladles of certain steel mill, can be reached 128 times, reaching similarly makes
With the service life, but the two cost is different, therefore it is different to generate economic benefit.
Claims (9)
1. utilizing the method for reworked material manufacture magnalium carbon refractory brick, which is characterized in that this method comprises the following steps：
Step 1, prepare aggregate, the component containing following parts by weight：
Make regenerative magnesia-carbon brick waste material, the 10%-30% of granularity 1-8mm by oneself, granularity is the 5%-15% of 0.1-1mm；From preparation, regeneration
Aluminium-magnesia carbon brick waste material, the 15-40% of granularity 1-8mm, granularity are the 5%-15% of 0.1-1mm；Fused magnesite, granularity 0.1-
The 5%-10% of 1mm；
Step 2, premixed powder is prepared, by the component mixing for standby use of following parts by weight：
(a) the fused magnesite fine powder 5%-10% that granularity is 10 μm -88 μm；The white fused alumina fine powder 5-15% that granularity is 1 μm -44 μm；
(b) specialist additive:Make aluminium borate whisker 0.5-5%, nano level silicon carbide micro-powder 2-5%, 5 μm of calcined alumina by oneself
Micro mist 1-2%；
(c) bonding agent is helped：Asphalt powder 0.5-1%；The boric anhydride 0.1-0.5%, needle coke 1-2% that granularity is 30 μm -88 μm;
(d) antioxidant 1%~5%；
Step 3, mixing sequence：By the aggregate of step 1, step 2 premixed powder and account for gross weight 1-5% granularities be 100 mesh stone
Ink is added sequentially in muller, and low speed is kneaded 2-3 minutes, adds the additional bonding agent low speed kneading for accounting for gross weight 2.8%-3%
5-8 minutes, then be kneaded 15-20 minutes at a high speed；
Step 4, moulding process：Pug takes out after being kneaded in step 3, according to the regulation of " 3 light 5 weight ", is hit molding shape
At adobe, adobe density is 2.95-3.3g/cm3 after molding；
Step 5, dry：After 180-220 °C of temperature drying for 24 hours by the molding adobe in step 4 to obtain the final product.
2. the method according to claim 1 for manufacturing magnalium carbon refractory brick using reworked material, which is characterized in that the step
1 self-control regenerative magnesia-carbon brick and aluminium-magnesia carbon brick waste material is reworked material by sorting crushing, aquation, drying, rolling, sieve and waited
Made from journey.
3. the method according to claim 1 for manufacturing magnalium carbon refractory brick using reworked material, which is characterized in that in step 2
The antioxidant is one or both of metallic silicon power, Al-Mg alloy powder or metallic aluminium powder mixture.
4. the method according to claim 1 for manufacturing magnalium carbon refractory brick using reworked material, which is characterized in that in step 2
The method of the self-control aluminium borate whisker, is to react aluminium oxide at 1200~1300 DEG C with boron oxide, obtains large scale boron
Sour al whisker；The SiC content of the nano level silicon carbide is more than 95%；The Al2O3 of described 5 μm of calcined alumina micro mist contains
Amount is more than 99%.
5. the method according to claim 1 for manufacturing magnalium carbon refractory brick using reworked material, which is characterized in that the boric acid
A diameter of 1-1.5 μm of al whisker, average length are 20-50 μm.
6. the method according to claim 1 for manufacturing magnalium carbon refractory brick using reworked material, which is characterized in that in step 2
The carbon content for helping the boron oxide content of boric anhydride in bonding agent to be more than or equal to 95%, needle coke is more than 98.5%.
7. the method according to claim 1 for manufacturing magnalium carbon refractory brick using reworked material, which is characterized in that in step 3
The additional bonding agent is phenol-formaldehyde resin modified.
8. the method according to claim 1 for manufacturing magnalium carbon refractory brick using reworked material, which is characterized in that in step 3
Carbon content is more than or equal to 95% in the graphite.
9. the method according to claim 1 for manufacturing magnalium carbon refractory brick using reworked material, which is characterized in that it is described from
Preparation, regeneration magnesia carbon brick waste material, self-control regeneration aluminium-magnesia carbon brick waste material, fused magnesite, white fused alumina index are as shown in the table：
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| CN112028613A (en) * | 2020-09-02 | 2020-12-04 | 江苏苏嘉集团新材料有限公司 | Magnesia carbon brick using catalyst-added phenolic resin |
| CN112062586A (en) * | 2020-09-24 | 2020-12-11 | 山东柯信新材料有限公司 | Production method of environment-friendly carbon-containing brick |
| CN112500134A (en) * | 2021-02-05 | 2021-03-16 | 北京利尔高温材料股份有限公司 | Magnesia carbon brick and preparation method thereof |
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| CN109678534B (en) * | 2018-12-17 | 2021-10-15 | 武汉钢铁集团耐火材料有限责任公司 | Aluminium-magnesia-carbon brick for ladle furnace lining |
| CN110668831A (en) * | 2019-10-21 | 2020-01-10 | 上海利尔耐火材料有限公司 | Preparation method of recycled aluminum-magnesia-carbon brick for ladle edge part |
| CN112028613A (en) * | 2020-09-02 | 2020-12-04 | 江苏苏嘉集团新材料有限公司 | Magnesia carbon brick using catalyst-added phenolic resin |
| CN112062586A (en) * | 2020-09-24 | 2020-12-11 | 山东柯信新材料有限公司 | Production method of environment-friendly carbon-containing brick |
| CN112500134A (en) * | 2021-02-05 | 2021-03-16 | 北京利尔高温材料股份有限公司 | Magnesia carbon brick and preparation method thereof |
| CN112500134B (en) * | 2021-02-05 | 2021-06-08 | 北京利尔高温材料股份有限公司 | Magnesia carbon brick and preparation method thereof |
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