CN116283246A - Unshaped refractory material and preparation process thereof - Google Patents
Unshaped refractory material and preparation process thereof Download PDFInfo
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- CN116283246A CN116283246A CN202310274074.3A CN202310274074A CN116283246A CN 116283246 A CN116283246 A CN 116283246A CN 202310274074 A CN202310274074 A CN 202310274074A CN 116283246 A CN116283246 A CN 116283246A
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- aluminate cement
- aluminum
- alumina
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- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000011819 refractory material Substances 0.000 title abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 78
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 74
- 150000004645 aluminates Chemical class 0.000 claims abstract description 44
- 239000004568 cement Substances 0.000 claims abstract description 44
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 38
- RGPUVZXXZFNFBF-UHFFFAOYSA-K diphosphonooxyalumanyl dihydrogen phosphate Chemical compound [Al+3].OP(O)([O-])=O.OP(O)([O-])=O.OP(O)([O-])=O RGPUVZXXZFNFBF-UHFFFAOYSA-K 0.000 claims abstract description 29
- 239000005350 fused silica glass Substances 0.000 claims abstract description 27
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000002994 raw material Substances 0.000 claims abstract description 25
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 23
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 22
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 19
- 229910052596 spinel Inorganic materials 0.000 claims abstract description 15
- 239000011029 spinel Substances 0.000 claims abstract description 15
- 239000000654 additive Substances 0.000 claims abstract description 13
- 230000000996 additive effect Effects 0.000 claims abstract description 13
- 239000004576 sand Substances 0.000 claims abstract description 11
- 235000019738 Limestone Nutrition 0.000 claims abstract description 10
- 239000006028 limestone Substances 0.000 claims abstract description 10
- 239000011230 binding agent Substances 0.000 claims abstract description 6
- 239000002131 composite material Substances 0.000 claims abstract description 6
- 239000002245 particle Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 38
- 239000002893 slag Substances 0.000 claims description 28
- 238000002156 mixing Methods 0.000 claims description 26
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 24
- 239000000706 filtrate Substances 0.000 claims description 16
- 238000007580 dry-mixing Methods 0.000 claims description 15
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 12
- 239000000047 product Substances 0.000 claims description 11
- 238000003756 stirring Methods 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 10
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 8
- 159000000009 barium salts Chemical class 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- 238000001354 calcination Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 4
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 239000011574 phosphorus Substances 0.000 claims description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims description 4
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 4
- 238000005245 sintering Methods 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 6
- 239000000463 material Substances 0.000 abstract description 12
- 239000000395 magnesium oxide Substances 0.000 description 6
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 6
- 244000025254 Cannabis sativa Species 0.000 description 4
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 4
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 235000009120 camo Nutrition 0.000 description 4
- 235000005607 chanvre indien Nutrition 0.000 description 4
- 239000011487 hemp Substances 0.000 description 4
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 239000005995 Aluminium silicate Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 235000012211 aluminium silicate Nutrition 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 239000010977 jade Substances 0.000 description 3
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 3
- 229910052582 BN Inorganic materials 0.000 description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 2
- QXZUUHYBWMWJHK-UHFFFAOYSA-N [Co].[Ni] Chemical compound [Co].[Ni] QXZUUHYBWMWJHK-UHFFFAOYSA-N 0.000 description 2
- AYJRCSIUFZENHW-DEQYMQKBSA-L barium(2+);oxomethanediolate Chemical compound [Ba+2].[O-][14C]([O-])=O AYJRCSIUFZENHW-DEQYMQKBSA-L 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 239000010893 paper waste Substances 0.000 description 2
- 239000011087 paperboard Substances 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- -1 color Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- C04B35/01—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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/36—Aluminium phosphates
-
- 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
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
-
- 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
- C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
- C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
- C04B35/6303—Inorganic additives
- C04B35/6306—Binders based on phosphoric acids or phosphates
- C04B35/6309—Aluminium phosphates
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/32—Aluminous cements
-
- 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
- C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
- C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
-
- 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
- C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Ceramic Products (AREA)
Abstract
The invention discloses an unshaped refractory material, which comprises 60-85 parts of aggregate, 20-40 parts of powder, 12.5-16 parts of composite binding agent and 0.5-2 parts of additive; the aggregate comprises 20-35 parts of high bauxite, 10-30 parts of magnesia-alumina spinel, 10-15 parts of alumina powder, 5-20 parts of silica powder and 3-8 parts of silica powder, wherein the powder contains more than 10 mass percent and less than 35 mass percent of MgO, the total mass percent of aluminate cement and aluminum dihydrogen phosphate in the powder is more than 90% relative to the whole mass of the powder, and the additive is fused quartz particles and consists of the following components in percentage by mass: fused silica sand with granularity of 0.3-0.2mm and content of 4-6%. According to the unshaped refractory material and the preparation process thereof, high-temperature resistance of the refractory material is guaranteed by taking high bauxite, magnesia-alumina spinel and alumina powder as aggregate, and meanwhile, the raw materials are red mud, limestone and aluminum ash, so that the preparation cost of the material is greatly reduced, and the practical value of the material preparation is increased.
Description
Technical Field
The invention relates to the technical field of refractory materials, in particular to an unshaped refractory material and a preparation process thereof.
Background
The unshaped refractory has wide application range and is widely used in the fields of steel, color, building materials, light industry, petrochemical industry and the like.
The prior publication No. CN102924098A discloses a preparation method of low-aggregation explosion-proof fiber for unshaped refractory materials, which belongs to the field of refractory materials. Taking waste paper (books, newspapers, paperboards and the like) and waste hemp products (gunny bags, hemp ropes and the like) as raw materials, adding a proper amount of anti-agglomeration additive, putting into a high-efficiency pulverizer for crushing, and then utilizing processes such as screening technology and the like to prepare the anti-explosion fiber with different length-diameter ratios. The preparation method is simple in process and convenient to operate, the obtained product is environment-friendly, resources are recycled, the cost performance is high, the steam pressure in the unshaped refractory material can be effectively reduced, and accordingly the bursting phenomenon is avoided, and the bursting prevention effect is more remarkable particularly in the high-strength quick-drying unshaped refractory material.
In addition, publication No. CN112250456A discloses an unshaped refractory material which comprises the following raw materials in parts by weight: 30-50 parts of quartz sand, 5-10 parts of graphite, 8-12 parts of kaolin, 5-8 parts of semisteel jade, 10-15 parts of titanium dioxide, 20-30 parts of barium carbonate, 3-15 parts of zirconium oxide, 2-20 parts of magnesium oxide, 5-15 parts of silicon dioxide, 20-40 parts of nickel-cobalt alloy, 2-10 parts of zinc borate, 2-8 parts of lanthanum oxide, 5-12 parts of calcium oxide, 10-25 parts of boron nitride, 5-13 parts of chromium boride and 10-20 parts of spinel. The invention adopts quartz, graphite, kaolin and semisteel jade as base materials, can improve the overall strength of the material, ensures that the material is not scattered, has higher compactness and has certain fireproof performance, and further improves the fireproof performance of the material by adding titanium dioxide, barium carbonate, zirconium oxide, magnesium oxide, silicon dioxide, nickel-cobalt alloy, zinc borate, lanthanum oxide, calcium oxide, boron nitride, chromium boride, spinel, quartz, graphite, kaolin and semisteel jade into a whole.
In the first technology, waste paper (books, newspapers, paperboards and the like) and waste hemp products (gunny bags, hemp ropes and the like) are used as raw materials, so that although the preparation cost of the whole material is reduced, the fire resistance of the material is reduced, and in the document 2, the material is mainly solidified chemical substances, so that the material can only be melted and solidified at higher cost in the use process, such as spray design, a high-pressure sealing environment is required to be designed for sealing, and the later use cost is greatly increased.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides an unshaped refractory material and a preparation process thereof, and solves the problems.
(II) technical scheme
In order to achieve the above purpose, the present invention provides the following technical solutions: an unshaped refractory material comprises 60-85 parts of aggregate, 20-40 parts of powder, 12.5-16 parts of composite binding agent and 0.5-2 parts of additive;
the aggregate comprises 20-35 parts of high bauxite, 10-30 parts of magnesia-alumina spinel, 10-15 parts of alumina powder, 5-20 parts of silica micropowder and 3-8 parts of silica micropowder, wherein the powder contains MgO with the mass percent of more than 10% and less than 35%;
in the powder, the total mass percent of aluminate cement and aluminum dihydrogen phosphate is more than 90 percent relative to the whole mass of the powder;
the additive is fused quartz particles, and consists of the following components in percentage by mass: fused silica sand with granularity of 0.3-0.2mm and content of 4-6%; fused quartz powder with granularity of 0.075mm-0.065mm and content of 18% -22%; fused quartz powder with granularity of 0.04-0035 mm and content of 72-78%.
An unshaped refractory material comprises 60-85 parts of aggregate, 20-40 parts of powder, 12.5-16 parts of composite binding agent and 0.5-2 parts of additive;
the aggregate comprises 20-35 parts of high bauxite, 10-30 parts of magnesia-alumina spinel, 10-15 parts of alumina powder, 5-20 parts of silica micropowder and 3-8 parts of silica micropowder, wherein the powder contains MgO with the mass percent of more than 10% and less than 35%;
in the powder, the total mass percent of aluminate cement and aluminum dihydrogen phosphate is more than 90 percent relative to the whole mass of the powder;
the additive is fused quartz particles, and consists of the following components in percentage by mass: fused silica sand with granularity of 0.3-0.2mm and content of 4-6%; fused quartz powder with granularity of 0.075mm-0.065mm and content of 18% -22%; fused quartz powder with granularity of 0.04-0035 mm and content of 72-78%.
Preferably, step one; weighing: accurately weighing and quantifying high bauxite, magnesia-alumina spinel with 200 meshes, silica micropowder, alumina powder, aluminate cement and aluminum dihydrogen phosphate;
step two: dry blending: placing the high bauxite, the high bauxite 200 meshes, the silicon micropowder and the alumina powder weighed in the first step into a forced mixer for dry mixing;
step three: stirring: adding aluminum dihydrogen phosphate and fused quartz sand into the mixture obtained after dry mixing in the step two, and stirring to uniformly mix the mixture;
step four: and (3) forming: and (3) adding the mixture obtained after the step (III) is uniformly mixed into aluminate cement to enable the plasticity of the mixture to be capable of being bonded together.
Preferably, the dry mixing is carried out in a forced mixer for 4min, and the mixing time of the mixture and the aluminum dihydrogen phosphate is 5min.
Preferably, the preparation method of the aluminate cement comprises the following steps:
a1, crushing pretreated red mud, limestone, aluminum ash and industrial alumina;
a2, uniformly mixing the crushed raw materials of the A1 and the crushed raw materials, and then adding copper sulfate into the obtained mixture to prepare aluminate cement raw materials;
a3, calcining the aluminate cement raw material, and cooling the calcined aluminate cement raw material along with a furnace to obtain aluminate cement clinker;
and A4, adding polyacrylonitrile short fibers into the aluminate cement clinker, and grinding to obtain the aluminate cement.
Preferably, the preparation method of the aluminum dihydrogen phosphate comprises the following steps:
b1, washing and drying the lithium slag to obtain slag powder;
b2, mixing the slag powder with phosphoric acid, and performing sintering treatment to obtain a sintered product;
b3, dissolving the sintered product in water, and filtering to obtain filtrate;
and B4, adding aluminum salt into the filtrate according to the mass ratio of the aluminum salt to the slag powder of (0-0.05): 1, enabling the molar ratio of the aluminum element to the phosphorus element in the filtrate to be 1 (2.7-3.1), then adding barium salt into the filtrate according to the mass ratio of the barium salt to the slag powder of (0-0.08): 1, mixing, and filtering to obtain the aluminum dihydrogen phosphate solution.
Preferably, the pretreated red mud, limestone, aluminum ash and industrial alumina are crushed to 250-300 meshes.
Preferably, the aluminum ash is one or a mixture of two of primary industrial aluminum ash and secondary industrial aluminum ash.
Preferably, in the step of mixing the slag powder with the phosphoric acid, the mass ratio of the slag powder to the phosphoric acid is 1:1.2; weighing: accurately weighing and quantifying high bauxite, magnesia-alumina spinel with 200 meshes, silica micropowder, alumina powder, aluminate cement and aluminum dihydrogen phosphate;
step two: dry blending: placing the high bauxite, the high bauxite 200 meshes, the silicon micropowder and the alumina powder weighed in the first step into a forced mixer for dry mixing;
step three: stirring: adding aluminum dihydrogen phosphate and fused quartz sand into the mixture obtained after dry mixing in the step two, and stirring to uniformly mix the mixture;
step four: and (3) forming: and (3) adding the mixture obtained after the step (III) is uniformly mixed into aluminate cement to enable the plasticity of the mixture to be capable of being bonded together.
Preferably, the dry mixing is carried out in a forced mixer for 4min, and the mixing time of the mixture and the aluminum dihydrogen phosphate is 5min.
Preferably, the preparation method of the aluminate cement comprises the following steps:
a1, crushing pretreated red mud, limestone, aluminum ash and industrial alumina;
a2, uniformly mixing the crushed raw materials of the A1 and the crushed raw materials, and then adding copper sulfate into the obtained mixture to prepare aluminate cement raw materials;
a3, calcining the aluminate cement raw material, and cooling the calcined aluminate cement raw material along with a furnace to obtain aluminate cement clinker;
and A4, adding polyacrylonitrile short fibers into the aluminate cement clinker, and grinding to obtain the aluminate cement.
Preferably, the preparation method of the aluminum dihydrogen phosphate comprises the following steps:
b1, washing and drying the lithium slag to obtain slag powder;
b2, mixing the slag powder with phosphoric acid, and performing sintering treatment to obtain a sintered product;
b3, dissolving the sintered product in water, and filtering to obtain filtrate;
and B4, adding aluminum salt into the filtrate according to the mass ratio of the aluminum salt to the slag powder of (0-0.05): 1, enabling the molar ratio of the aluminum element to the phosphorus element in the filtrate to be 1 (2.7-3.1), then adding barium salt into the filtrate according to the mass ratio of the barium salt to the slag powder of (0-0.08): 1, mixing, and filtering to obtain the aluminum dihydrogen phosphate solution.
Preferably, the pretreated red mud, limestone, aluminum ash and industrial alumina are crushed to 250-300 meshes.
Preferably, the aluminum ash is one or a mixture of two of primary industrial aluminum ash and secondary industrial aluminum ash.
Preferably, in the step of mixing the slag powder with phosphoric acid, the mass ratio of the slag powder to the phosphoric acid is 1:1.2.
(III) beneficial effects
The invention provides an unshaped refractory material and a preparation process thereof, and the unshaped refractory material has the following beneficial effects:
according to the unshaped refractory material and the preparation process thereof, high-temperature resistance of the refractory material is guaranteed by taking high bauxite, magnesia-alumina spinel and alumina powder as aggregate, and meanwhile, the raw materials are red mud, limestone and aluminum ash, so that the preparation cost of the material is greatly reduced, and the practical value of the material preparation is increased.
Detailed Description
All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The invention provides a technical scheme that: an unshaped refractory material comprises 60-85 parts of aggregate, 20-40 parts of powder, 12.5-16 parts of composite binding agent and 0.5-2 parts of additive;
the aggregate comprises 20-35 parts of high bauxite, 10-30 parts of magnesia-alumina spinel, 10-15 parts of alumina powder, 5-20 parts of silica micropowder and 3-8 parts of silica micropowder, wherein the powder contains MgO with the mass percent of more than 10% and less than 35%;
in the powder, the total mass percent of aluminate cement and aluminum dihydrogen phosphate is more than 90 percent relative to the whole mass of the powder;
the additive is fused quartz particles, and consists of the following components in percentage by mass: fused silica sand with granularity of 0.3-0.2mm and content of 4-6%; fused quartz powder with granularity of 0.075mm-0.065mm and content of 18% -22%; fused quartz powder with granularity of 0.04-0035 mm and content of 72-78%.
Step one, a step one; weighing: accurately weighing and quantifying high bauxite, magnesia-alumina spinel with 200 meshes, silica micropowder, alumina powder, aluminate cement and aluminum dihydrogen phosphate;
step two: dry blending: placing the high bauxite, the high bauxite 200 meshes, the silicon micropowder and the alumina powder weighed in the first step into a forced mixer for dry mixing;
step three: stirring: adding aluminum dihydrogen phosphate and fused quartz sand into the mixture obtained after dry mixing in the step two, and stirring to uniformly mix the mixture;
step four: and (3) forming: and (3) adding the mixture obtained after the step (III) is uniformly mixed into aluminate cement to enable the plasticity of the mixture to be capable of being bonded together.
The dry mixing time in the forced mixer is 4min, and the mixing time of the mixture and the aluminum dihydrogen phosphate is 5min.
The preparation method of the aluminate cement comprises the following steps:
a1, crushing pretreated red mud, limestone, aluminum ash and industrial alumina;
a2, uniformly mixing the crushed raw materials of the A1 and the crushed raw materials, and then adding copper sulfate into the obtained mixture to prepare aluminate cement raw materials;
a3, calcining the aluminate cement raw material, and cooling the calcined aluminate cement raw material along with a furnace to obtain aluminate cement clinker;
and A4, adding polyacrylonitrile short fibers into the aluminate cement clinker, and grinding to obtain the aluminate cement.
The pretreated red mud, limestone, aluminum ash and industrial aluminum oxide are crushed to 250-300 meshes, the aluminum ash is one or a mixture of two of primary industrial aluminum ash and secondary industrial aluminum ash, and in the step of mixing slag powder with phosphoric acid, the mass ratio of the slag powder to the phosphoric acid is 1:1.2.
Example 2
An unshaped refractory material comprises 60-85 parts of aggregate, 20-40 parts of powder, 12.5-16 parts of composite binding agent and 0.5-2 parts of additive;
the aggregate comprises 20-35 parts of high bauxite, 10-30 parts of magnesia-alumina spinel, 10-15 parts of alumina powder, 5-20 parts of silica micropowder and 3-8 parts of silica micropowder, wherein the powder contains MgO with the mass percent of more than 10% and less than 35%;
in the powder, the total mass percent of aluminate cement and aluminum dihydrogen phosphate is more than 90 percent relative to the whole mass of the powder;
the additive is fused quartz particles, and consists of the following components in percentage by mass: fused silica sand with granularity of 0.3-0.2mm and content of 4-6%; fused quartz powder with granularity of 0.075mm-0.065mm and content of 18% -22%; fused quartz powder with granularity of 0.04-0035 mm and content of 72-78%.
Step one, a step one; weighing: accurately weighing and quantifying high bauxite, magnesia-alumina spinel with 200 meshes, silica micropowder, alumina powder, aluminate cement and aluminum dihydrogen phosphate;
step two: dry blending: placing the high bauxite, the high bauxite 200 meshes, the silicon micropowder and the alumina powder weighed in the first step into a forced mixer for dry mixing;
step three: stirring: adding aluminum dihydrogen phosphate and fused quartz sand into the mixture obtained after dry mixing in the step two, and stirring to uniformly mix the mixture;
step four: and (3) forming: and (3) adding the mixture obtained after the step (III) is uniformly mixed into aluminate cement to enable the plasticity of the mixture to be capable of being adhered together.
The dry mixing time in the forced mixer is 4min, and the mixing time of the mixture and the aluminum dihydrogen phosphate is 5min.
The preparation method of the aluminum dihydrogen phosphate comprises the following steps:
b1, washing and drying the lithium slag to obtain slag powder;
b2, mixing the slag powder with phosphoric acid, and performing sintering treatment to obtain a sintered product;
b3, dissolving the sintered product in water, and filtering to obtain filtrate;
and B4, adding aluminum salt into the filtrate according to the mass ratio of the aluminum salt to the slag powder of (0-0.05): 1, enabling the molar ratio of the aluminum element to the phosphorus element in the filtrate to be 1 (2.7-3.1), then adding barium salt into the filtrate according to the mass ratio of the barium salt to the slag powder of (0-0.08): 1, mixing, and filtering to obtain the aluminum dihydrogen phosphate solution.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. An unshaped refractory characterized by: comprises 60-85 parts of aggregate, 20-40 parts of powder, 12.5-16 parts of composite binding agent and 0.5-2 parts of additive;
the aggregate comprises 20-35 parts of high bauxite, 10-30 parts of magnesia-alumina spinel, 10-15 parts of alumina powder, 5-20 parts of silica micropowder and 3-8 parts of silica micropowder, wherein the powder contains MgO with the mass percent of more than 10% and less than 35%;
in the powder, the total mass percent of aluminate cement and aluminum dihydrogen phosphate is more than 90 percent relative to the whole mass of the powder;
the additive is fused quartz particles, and consists of the following components in percentage by mass: fused silica sand with granularity of 0.3-0.2mm and content of 4-6%; fused quartz powder with granularity of 0.075mm-0.065mm and content of 18% -22%; fused quartz powder with granularity of 0.04-0035 mm and content of 72-78%.
2. A process for the preparation of an unshaped refractory according to claim 1, characterized in that: step one, a step one; weighing: accurately weighing and quantifying high bauxite, magnesia-alumina spinel with 200 meshes, silica micropowder, alumina powder, aluminate cement and aluminum dihydrogen phosphate;
step two: dry blending: placing the high bauxite, the high bauxite 200 meshes, the silicon micropowder and the alumina powder weighed in the first step into a forced mixer for dry mixing;
step three: stirring: adding aluminum dihydrogen phosphate and fused quartz sand into the mixture obtained after dry mixing in the step two, and stirring to uniformly mix the mixture;
step four: and (3) forming: and (3) adding the mixture obtained after the step (III) is uniformly mixed into aluminate cement to enable the plasticity of the mixture to be capable of being bonded together.
3. The process for preparing an unshaped refractory according to claim 1, wherein: the dry mixing time in the forced mixer is 4min, and the mixing time of the mixture and the aluminum dihydrogen phosphate is 5min.
4. The process for preparing an unshaped refractory according to claim 1, wherein: the preparation method of the aluminate cement comprises the following steps:
a1, crushing pretreated red mud, limestone, aluminum ash and industrial alumina;
a2, uniformly mixing the crushed raw materials of the A1 and the crushed raw materials, and then adding copper sulfate into the obtained mixture to prepare aluminate cement raw materials;
a3, calcining the aluminate cement raw material, and cooling the calcined aluminate cement raw material along with a furnace to obtain aluminate cement clinker;
and A4, adding polyacrylonitrile short fibers into the aluminate cement clinker, and grinding to obtain the aluminate cement.
5. The process for preparing an unshaped refractory according to claim 1, wherein: the preparation method of the aluminum dihydrogen phosphate comprises the following steps:
b1, washing and drying the lithium slag to obtain slag powder;
b2, mixing the slag powder with phosphoric acid, and performing sintering treatment to obtain a sintered product;
b3, dissolving the sintered product in water, and filtering to obtain filtrate;
and B4, adding aluminum salt into the filtrate according to the mass ratio of the aluminum salt to the slag powder of (0-0.05): 1, enabling the molar ratio of the aluminum element to the phosphorus element in the filtrate to be 1 (2.7-3.1), then adding barium salt into the filtrate according to the mass ratio of the barium salt to the slag powder of (0-0.08): 1, mixing, and filtering to obtain the aluminum dihydrogen phosphate solution.
6. The process for preparing an unshaped refractory according to claim 4, wherein: the pretreated red mud, limestone, aluminum ash and industrial alumina are crushed to 250-300 meshes.
7. The process for preparing an unshaped refractory according to claim 4, wherein: the aluminum ash is one or a mixture of two of primary industrial aluminum ash and secondary industrial aluminum ash.
8. The process for preparing an unshaped refractory according to claim 5, wherein: in the step of mixing the slag powder with the phosphoric acid, the mass ratio of the slag powder to the phosphoric acid is 1:1.2.
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| CN1715247A (en) * | 2004-06-29 | 2006-01-04 | 杰富意钢铁株式会社 | Unshaped refractories |
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| CN110407592A (en) * | 2019-08-09 | 2019-11-05 | 洛阳特耐窑炉工程有限公司 | A kind of formula and preparation method thereof of aluminum amorphous refractory |
| CN112811835A (en) * | 2021-01-14 | 2021-05-18 | 淄博正河净水剂有限公司 | Preparation method of aluminate cement |
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| CN1715247A (en) * | 2004-06-29 | 2006-01-04 | 杰富意钢铁株式会社 | Unshaped refractories |
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