CN106365656B - A kind of magnesium carbon zirconium composite refractory and preparation method thereof - Google Patents
A kind of magnesium carbon zirconium composite refractory and preparation method thereof Download PDFInfo
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- CN106365656B CN106365656B CN201610772666.8A CN201610772666A CN106365656B CN 106365656 B CN106365656 B CN 106365656B CN 201610772666 A CN201610772666 A CN 201610772666A CN 106365656 B CN106365656 B CN 106365656B
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- forsterite
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- plasticizer
- bonding agent
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- GEGYPQSSXPHIRH-UHFFFAOYSA-N [Zr].[Mg].[C] Chemical compound [Zr].[Mg].[C] GEGYPQSSXPHIRH-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 239000002131 composite material Substances 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229910052839 forsterite Inorganic materials 0.000 claims abstract description 42
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000007767 bonding agent Substances 0.000 claims abstract description 22
- 239000004014 plasticizer Substances 0.000 claims abstract description 21
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 18
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 14
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 33
- 239000000203 mixture Substances 0.000 claims description 21
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 16
- 239000011863 silicon-based powder Substances 0.000 claims description 15
- 239000000440 bentonite Substances 0.000 claims description 13
- 229910000278 bentonite Inorganic materials 0.000 claims description 13
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 13
- 239000004927 clay Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 11
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 11
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 11
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 11
- 238000000227 grinding Methods 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 10
- 238000004321 preservation Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 238000007885 magnetic separation Methods 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 239000011819 refractory material Substances 0.000 abstract description 25
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 10
- 230000035939 shock Effects 0.000 abstract description 10
- 230000007797 corrosion Effects 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 8
- 239000002893 slag Substances 0.000 abstract description 8
- 239000012298 atmosphere Substances 0.000 abstract description 6
- 230000003628 erosive effect Effects 0.000 abstract description 5
- 239000000395 magnesium oxide Substances 0.000 abstract description 5
- 239000000377 silicon dioxide Substances 0.000 abstract description 5
- 238000003723 Smelting Methods 0.000 abstract description 4
- MEYZYGMYMLNUHJ-UHFFFAOYSA-N tunicamycin Natural products CC(C)CCCCCCCCCC=CC(=O)NC1C(O)C(O)C(CC(O)C2OC(C(O)C2O)N3C=CC(=O)NC3=O)OC1OC4OC(CO)C(O)C(O)C4NC(=O)C MEYZYGMYMLNUHJ-UHFFFAOYSA-N 0.000 abstract description 4
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 7
- 229910052863 mullite Inorganic materials 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 235000010755 mineral Nutrition 0.000 description 4
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical group O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 3
- 239000002075 main ingredient Substances 0.000 description 3
- 229910052901 montmorillonite Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910003978 SiClx Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 235000001055 magnesium Nutrition 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 240000007817 Olea europaea Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- PZZYQPZGQPZBDN-UHFFFAOYSA-N aluminium silicate Chemical compound O=[Al]O[Si](=O)O[Al]=O PZZYQPZGQPZBDN-UHFFFAOYSA-N 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 238000006701 autoxidation reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- -1 coloured Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910001607 magnesium mineral Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 230000008961 swelling Effects 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
- C04B35/66—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
- 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
- C04B35/03—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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
- C04B35/043—Refractories from grain sized mixtures
-
- 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
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/56—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
- C04B35/565—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
-
- 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
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, 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
- C04B2235/3418—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
- C04B2235/3436—Alkaline earth metal silicates, e.g. barium silicate
- C04B2235/3445—Magnesium silicates, e.g. forsterite
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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
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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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
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
Abstract
The invention discloses a kind of magnesium carbon zirconium composite refractory and preparation method thereof, consisting of: forsterite 45%-65%, silicon carbide 20%-35%, zirconium oxide 5%-10%, 5%-9% parts of bonding agent, plasticizer 1-5%.It is in terms of 100% by the quality of forsterite, the partial size of forsterite matches are as follows: 8-5mm 20%-30%, 5-3mm 50%-65%, 3-1mm 10%-15% is less than 1mm≤5%.Forsterite, which decomposes, generates sintered magnesia, has a good repellence to basic slag and scum, and the thermal expansion coefficient of silicon carbide and zirconium oxide is small, and the thermal shock resistance of refractory material can be improved.Silicon carbide high temperature generates silica tunic, refractory material layer can be protected from corrosion, while silicon carbide reacts with the alkaline atmosphere in smelting furnace, product vitrifying prevents in furnace inside alkaline atmosphere erosion of refractory.
Description
Technical field
The present invention relates to technical field of refractory materials, and in particular to a kind of erosion-resisting characteristics is excellent, thermal shock resistance is good, anti-
The magnesium carbon zirconium composite refractory and preparation method thereof of slagging effect protrusion.
Background technique
Mullite is the aluminium silicate mineral formed under a kind of high temperature, as a kind of high-quality refractory material, have intensity it is high,
The advantages such as fusing point is high, thermal conductivity is low, are now widely used in kiln, the Thermal Equipment of each industrial circle such as steel, coloured, chemical industry
In structures.But there are still following deficiencies when mullite is used as refractory material: 1) mullite is a kind of high aluminum mineral,
Main ingredient 3Al2O3·2SiO2, vulnerable to invading when being used in the equipment that converter etc. has alkaline atmosphere as refractory material
Erosion.2) it is poor to resist scum, the effect of alkaline body refuse when using in the equipment such as converter for mullite.3) mullite refractory system
The heat-resistant knocking stability of product is poor.
Chinese patent CN2007103045733, patent name high-strength low heat conductivity energy-saving material, in March, 2016 date of application
31 days, disclose one kind using micro-pore mullite as aggregate, addition Reactive alumina, fine silica powder, high-temperature cement with
The fire resistive material product of alumina fine powder has thermal coefficient small, the few advantage of heat loss, but aluminium oxide in the refractory material
Content reaches 52%-81%, keeps the weak refractory material resistive connection slag ability, corrosion resistance and thermal shock resistance poor, thus for steel-making
The equipment such as furnace, metallurgical furnace it is poor for applicability.
Summary of the invention
For high aluminum minerals such as mullites as the thermal shock resistance of refractory material, alkali resistance atmosphere erosiveness and Anti-slagging
The problem of ability difference, the purpose of the present invention is to provide a kind of using the rich magnesiums such as Forsterite mineral as the thermal shock resistance of raw material
Good, corrosion resistance is excellent, the magnesium carbon zirconium composite refractory of Anti-slagging effect protrusion.
It is another object of the present invention to provide the preparation methods of the refractory material.
The present invention provides the following technical solution:
A kind of magnesium carbon zirconium composite refractory, composition and corresponding mass percent are as follows: forsterite 45%-65%, carbon
SiClx 20%-35%, zirconium oxide 5%-10%, bonding agent 5%-9%, plasticizer 1-5%.The main ingredient of forsterite is 2MgO
2SiO2, it is a kind of rich magnesium mineral, there is high temperature resistant, anti-erosion, good chemical stability.After forsterite calcining and decomposing
Magnesia be a kind of basic anhydride, have good hot-face insulation performance, crystalline substance can be changed by burning through 1000 DEG C or more high temperature
Body rises to 1500 DEG C or more and then becomes sintered magnesia, and thermal conductivity coefficient is low, anti-erosion and stable chemical performance, to basic slag and
Scum has good repellence.Silicon carbide stable chemical performance, sublimation temperature are up to 2700 DEG C, are suitable as refractory material
Additive, and the thermal expansion coefficient of silicon carbide is small, and the thermal shock resistance of refractory material can be improved, while under silicon carbide high temperature
Autoxidation characteristic can generate silica tunic in refractory material layer, and can react with smelting furnace clinker, make and fire proofed wood
Expect that the viscosity of the clinker of working surface contact increases, prevents clinker to be impregnated with refractory material layer, refractory material is inhibited to be subject to
Corrosion.The exposed silicon carbide in fire resisting layer surface can react with the alkaline atmosphere in smelting furnace, and obtained product is after melting
Vitrifying can prevent the inside of alkaline atmosphere erosion of refractory in furnace, enhance the erosion-resisting characteristics of refractory material.Zirconium oxide
Fusing point is up to 2680 DEG C, has the advantages that resistance to oxidation, corrosion resistant, and thermal expansion coefficient is small, good thermal shock, can strengthen resistance to
The thermal shock resistance of fiery material.
It preferably as one kind of the invention, is the partial size grade of the forsterite in terms of 100% by the quality of forsterite
And corresponding quality proportioning are as follows: 8-5 mm 20%-30%, 5-3 mm 50%-65%, 3-1 mm 10%-15% is less than 1mm≤5%.
The partial size of forsterite can efficiently use the biggish forsterite of partial size in this way, can reduce original accordingly mainly in 3mm or more
The cost of material.
It preferably as one kind of the invention, is the composition of the bonding agent and corresponding in terms of 100% by the quality of bonding agent
Mass ratio are as follows: silicon powder 30%-50%, clay 50%-70%.Silicon powder temperature tolerance is good, acid-alkali-corrosive-resisting, stable chemical performance,
It can be filled in powder gap, and be reacted with magnesia and generate gelinite.Clay can form good in conjunction with non-plastic raw material
Good plastic walk.
It preferably as one kind of the invention, is the composition of the plasticizer and corresponding in terms of 100% by the quality of plasticizer
Mass ratio are as follows: bentonite 50%-70%, hydroxypropyl methyl cellulose 30-50%.Bentonitic main ingredient is montmorillonite, brilliant
Body structure is 2:1 type layer structure, is heated to 200-700 DEG C of appearance slowly expansion, forms anhydrous cover in 700-800 DEG C of dehydration and takes off
Then stone is shunk, and start to expand after 950 DEG C or more, have good plasticity, and anhydrous montmorillonite can change it is resistance to
The adhesive force of fiery material surface prevents refractory surface attachment slag etc..Hydroxypropyl methyl cellulose can be to avoid fire proofed wood
Material is cracked very much because of dry fastly after application, and enhances the hardening strength of coating refractory.
Preferably as one kind of the invention, the preparation process of the bonding agent is as follows: taking respectively by corresponding mass ratio
Clay and silicon powder are put into 2 times of clays and the ethylene glycol of silicon powder gross mass, stir 15 minutes at 70 DEG C, make clay and silicon
Micro mist is uniformly dispersed in ethylene glycol.Bonding agent makees solvent using ethylene glycol, silicon powder and clay is dispersed in ethylene glycol
Even, the binding performance showed surpasses silicon powder is directly dry-mixed with clay, and heating stirring facilitates clay and silicon powder
Uniformly mixing.
Preferably as one kind of the invention, the preparation process of the plasticizer is as follows: bentonite, which is ground to, can be sieved through 200
Sieve more than mesh takes the bentonite after grinding by corresponding mass ratio, is added the ethylene glycol of 3 times of bentonite quality, and 70 DEG C
Lower stirring 15 minutes, then takes the hydroxypropyl methyl cellulose of corresponding mass ratio to be added to bentonitic glycolic suspension
In, continue to stir 30 minutes at 70 DEG C, hydroxypropyl methyl cellulose is made to be uniformly dispersed.By after bentonite grind into powder state with
The good mixing effect of hydroxypropyl methyl cellulose, and can better filling fire resisting material gap.
Forsterite is carried out clear water removal of impurities and magnetic separation de-iron, so by a kind of preparation method of magnesium carbon zirconium composite refractory
Dry at 80 DEG C afterwards, the forsterite after mill-drying is distinguished to the sieve that can be sieved through 80 mesh or more by above-mentioned mass ratio
Take grinding after forsterite and other each raw materials, the forsterite after grinding is uniformly mixed with silicon carbide, zirconium oxide, to mix
It closes in material and the bonding agent prepared is added, mixed 15 minutes at 50 DEG C, continuously add the plasticizer prepared, mix 15 points
Clock, then dry 10-12 hour at 220 DEG C -290 DEG C, through 1500 DEG C -1730 DEG C of calcinings 2 hours, be cooled to 1000 DEG C -
1180 DEG C heat preservation 2.5-5 hours, be cooled to 550 DEG C of -620 DEG C of heat preservations 2.5-5 hours, be cooled to 220 DEG C of -290 DEG C of heat preservation 1.0-
2.5 hours, it is naturally cooling to room temperature, is encapsulated.Before mixing each raw material, forsterite is ground to fine powder state, is facilitated
The uniform mixing of each raw material, whipping temp, which is arranged at 50 DEG C, then facilitates being uniformly dispersed for bonding agent and plasticizer, makes resistance to
The component composition of fiery material each section uniformly, stablize, and is calcined after dry by performance, removes the igloss composition in forsterite.
It in such a way that the stage cools down, realizes that refractory material is down to room temperature, temperature decrease is avoided to make certain components that crystalline form conversion, shadow occur
Ring the using effect of refractory material.
Beneficial effects of the present invention are as follows:
The advantages of purpose of the present invention refractory material has corrosion resistance excellent, and Anti-slagging effect is protruded.1) magnesium olive
Stone refractoriness with higher decomposes under high temperature and generates magnesia, anti-erosion and stable chemical performance, has to basic slag and scum
There is good repellence.2) thermal expansion coefficient of silicon carbide and zirconium oxide is small, and the thermal shock resistance of refractory material can be improved.Carbon
SiClx high temperature generates silica tunic, and refractory material layer can be protected from corroding, and silica tunic and smelting furnace clinker
Reaction, can prevent clinker to be impregnated with refractory material layer.3) the anhydrous montmorillonite that bentonite is formed after firing, can change resistance to
The adhesive force of fiery material surface prevents refractory surface attachment slag etc..
Specific embodiment
Below in conjunction with specific embodiment, the present invention will be further described, but the limitation not to its protection scope:
In the present invention, if not refering in particular to, used raw material is available on the market or commonly used in the art, following
Method in embodiment is unless otherwise instructed the conventional method of this field.
The partial size grade and corresponding quality proportioning of forsterite used in the present invention are as follows: be with the quality of forsterite
100% meter, 8-5 mm 20%-30%, 5-3 mm 50%-65%, 3-1 mm 10%-15% are less than 1mm≤5%.
The composition of bonding agent used in the present invention and corresponding mass ratio are as follows: by the quality of bonding agent be 100% in terms of, knot
The composition of mixture and corresponding mass ratio are as follows: silicon powder 30%-50%, clay 50%-70%.
The preparation process of bonding agent used in the present invention is as follows: clay and silicon powder are taken respectively by corresponding mass ratio,
It is put into 2 times of clays and the ethylene glycol of silicon powder gross mass, is stirred 15 minutes at 70 DEG C, make clay and silicon powder in ethylene glycol
It is uniformly dispersed.
The composition of plasticizer used in the present invention and corresponding mass ratio are as follows: by the quality of plasticizer be 100% in terms of, swelling
Native 50%-70%, hydroxypropyl methyl cellulose 30-50%.
The preparation process of plasticizer used in the present invention is as follows: bentonite being ground to the sieve that can be sieved through 200 mesh or more, is pressed
Corresponding mass ratio takes the bentonite after grinding, and the ethylene glycol of 3 times of bentonite quality is added, and stirs 15 minutes at 70 DEG C, so
It takes the hydroxypropyl methyl cellulose of corresponding mass ratio to be added in bentonitic glycolic suspension afterwards, continues to stir at 70 DEG C
30 minutes, hydroxypropyl methyl cellulose is made to be uniformly dispersed.
Embodiment 1:
A kind of magnesium carbon zirconium composite refractory, composition and corresponding mass percent are as follows: forsterite 45%, silicon carbide
35%, zirconium oxide 10%, bonding agent 7%, plasticizer 3%.
The preparation method of magnesium carbon zirconium composite refractory: forsterite is subjected to clear water removal of impurities and magnetic separation de-iron, is then existed
Dry at 80 DEG C, the forsterite after mill-drying is taken respectively by above-mentioned mass ratio and is ground to the sieve that can be sieved through 80 mesh or more
Forsterite and other raw materials after mill, the forsterite after grinding are uniformly mixed with silicon carbide, zirconium oxide, into mixture
The bonding agent prepared is added, is mixed 15 minutes at 50 DEG C, continuously adds the plasticizer prepared, mixes 15 minutes, then exists
It is 10 hours dry at 220 DEG C, it is calcined 2 hours through 1500 DEG C, is cooled to 1000 DEG C and keeps the temperature 2.5 hours, be cooled to 550 DEG C of heat preservations
It 2.5 hours, is cooled to 220 DEG C and keeps the temperature 1.0 hours, be naturally cooling to room temperature, examine, encapsulation.
Embodiment 2:
A kind of magnesium carbon zirconium composite refractory, composition and corresponding mass percent are as follows: forsterite 60%, silicon carbide
23%, zirconium oxide 7%, bonding agent 5%, plasticizer 5%.
The preparation method of magnesium carbon zirconium composite refractory: forsterite is subjected to clear water removal of impurities and magnetic separation de-iron, is then existed
Dry at 80 DEG C, the forsterite after mill-drying is taken respectively by above-mentioned mass ratio and is ground to the sieve that can be sieved through 80 mesh or more
Forsterite and other raw materials after mill, the forsterite after grinding are uniformly mixed with silicon carbide, zirconium oxide, into mixture
The bonding agent for preparing is added, mix 15 minutes at 50 DEG C mixed, continuously adds the plasticizer prepared, mixing 15 minutes, then
It is 11 hours dry at 250 DEG C, it is calcined 2 hours through 1600 DEG C, is cooled to 1100 DEG C and keeps the temperature 4 hours, be cooled to 580 DEG C of heat preservations 4
Hour, it is cooled to 250 DEG C and keeps the temperature 2.0 hours, be naturally cooling to room temperature, examine, encapsulation.
Embodiment 3:
A kind of magnesium carbon zirconium composite refractory, composition and corresponding mass percent are as follows: forsterite 65%, silicon carbide
20%, zirconium oxide 5%, bonding agent 9%, plasticizer 1%.
The preparation method of magnesium carbon zirconium composite refractory: forsterite is subjected to clear water removal of impurities and magnetic separation de-iron, is then existed
Dry at 80 DEG C, the forsterite after mill-drying is taken respectively by above-mentioned mass ratio and is ground to the sieve that can be sieved through 80 mesh or more
Forsterite and other raw materials after mill, the forsterite after grinding are uniformly mixed with silicon carbide, zirconium oxide, into mixture
The bonding agent prepared is added, is mixed 15 minutes at 50 DEG C, continuously adds the plasticizer prepared, mixes 15 minutes, then exists
It is 12 hours dry at 290 DEG C, it is calcined 2 hours through 1730 DEG C, is cooled to 1180 DEG C and keeps the temperature 5 hours, it is small to be cooled to 620 DEG C of heat preservations 5
When, it is cooled to 290 DEG C and keeps the temperature 2.5 hours, be naturally cooling to room temperature, examine, encapsulation.
The test performance of the refractory material of the refractory material and comparative example 1 of embodiment 1-3 preparation is shown in Table 1, wherein comparative example 1
For commercially available mullite aluminous refractory.Water is added in each refractory material before test and latex stirs, then in a usual manner
It is applied on test pole, tests after drying, test pole is that celion cloth material is made, and highest can bear 2500 DEG C of height
Temperature.Thermal shock resistance is indicated with the number of alternations being able to bear between water cooling and 1400 DEG C.Corrosion resistance is with copper smelter slag 1400
DEG C when erode test after Erosion Size indicate, wherein the test result of comparative example 1 be 100, the bigger expression of test result
Corrosion resistance is lower.Anti- clinkering property then with erosion test after, the infiltration size Expressing of copper smelter slag, the wherein survey of comparative example 1
Test result is 100, and test result numerical value is bigger to indicate that anti-clinkering property is weaker.
Table 1
Claims (2)
1. a kind of magnesium carbon zirconium composite refractory, which is characterized in that the composition of the magnesium carbon zirconium composite refractory and corresponding
Mass percent are as follows: forsterite 45%-65%, silicon carbide 20%-35%, zirconium oxide 5%-10%, bonding agent 5%-9%,
Plasticizer 1%-5%；
It is the composition of the bonding agent and corresponding mass ratio are as follows: silicon powder 30%- in terms of 100% by the quality of bonding agent
50%, clay 50%-70%；
The preparation process of the bonding agent is as follows: take clay and silicon powder respectively by corresponding mass ratio, be put into 2 times of clays with
In the ethylene glycol of silicon powder gross mass, is stirred 15 minutes at 70 DEG C, clay and silicon powder is made to be uniformly dispersed in ethylene glycol；
It is the composition of the plasticizer and corresponding mass ratio are as follows: bentonite 50%- in terms of 100% by the quality of plasticizer
70%, hydroxypropyl methyl cellulose 30-50%；
The preparation process of the plasticizer is as follows: bentonite being ground to the sieve that can be sieved through 200 mesh or more, by corresponding quality
Ratio takes the bentonite after grinding, and the ethylene glycol of 3 times of bentonite quality is added, stirs 15 minutes at 70 DEG C, then takes corresponding matter
The hydroxypropyl methyl cellulose of amount ratio is added in bentonitic glycolic suspension, continues to stir 30 minutes at 70 DEG C, make
Hydroxypropyl methyl cellulose is uniformly dispersed；
The magnesium carbon zirconium composite refractory is prepared through following procedure: forsterite being carried out clear water removal of impurities and magnetic separation de-iron, so
Dry at 80 DEG C afterwards, the forsterite after mill-drying is distinguished to the sieve that can be sieved through 80 mesh or more by above-mentioned mass ratio
Take grinding after forsterite and other each raw materials, the forsterite after grinding is uniformly mixed with silicon carbide, zirconium oxide, to mix
It closes in material and the bonding agent prepared is added, mixed 15 minutes at 50 DEG C, continuously add the plasticizer prepared, mix 15 points
Clock, then dry 10-12 hour at 220 DEG C -290 DEG C, through 1500 DEG C -1730 DEG C of calcinings 2 hours, be cooled to 1000 DEG C -
1180 DEG C heat preservation 2.5-5 hours, be cooled to 550 DEG C of -620 DEG C of heat preservations 2.5-5 hours, be cooled to 220 DEG C of -290 DEG C of heat preservation 1.0-
2.5 hours, it is naturally cooling to room temperature, is encapsulated.
2. magnesium carbon zirconium composite refractory according to claim 1, which is characterized in that be with the quality of forsterite
100% meter, the partial size grade and corresponding quality proportioning of the forsterite are as follows: 8-5mm 20%-30%, 5-3mm 50%-
65%, 3-1mm 10%-15% are less than 1mm≤5%.
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| CN112010658B (en) * | 2019-05-28 | 2022-08-16 | 宝山钢铁股份有限公司 | Slag adhesion preventing material for refining ladle opening and preparation method thereof |
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| CN102617165A (en) * | 2012-03-28 | 2012-08-01 | 宜兴新威利成耐火材料有限公司 | Forsterite fireproof castable |
| CN103360084A (en) * | 2012-04-06 | 2013-10-23 | 孙莹 | Novel refractory material |
| CN105263883A (en) * | 2013-06-28 | 2016-01-20 | 耐火材料控股有限公司 | Refractory batch and use thereof |
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| CN102617165A (en) * | 2012-03-28 | 2012-08-01 | 宜兴新威利成耐火材料有限公司 | Forsterite fireproof castable |
| CN103360084A (en) * | 2012-04-06 | 2013-10-23 | 孙莹 | Novel refractory material |
| CN105263883A (en) * | 2013-06-28 | 2016-01-20 | 耐火材料控股有限公司 | Refractory batch and use thereof |
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