CN115385670A - 一种高纯高强骨料型氧化铬制品的制备方法 - Google Patents
一种高纯高强骨料型氧化铬制品的制备方法 Download PDFInfo
- Publication number
- CN115385670A CN115385670A CN202210947770.1A CN202210947770A CN115385670A CN 115385670 A CN115385670 A CN 115385670A CN 202210947770 A CN202210947770 A CN 202210947770A CN 115385670 A CN115385670 A CN 115385670A
- Authority
- CN
- China
- Prior art keywords
- chromium oxide
- aggregate
- chromium
- purity
- wet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 229910000423 chromium oxide Inorganic materials 0.000 title claims abstract description 71
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 75
- 239000011449 brick Substances 0.000 claims abstract description 34
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 31
- 239000011651 chromium Substances 0.000 claims abstract description 31
- 238000001238 wet grinding Methods 0.000 claims abstract description 25
- 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 24
- 238000002156 mixing Methods 0.000 claims abstract description 21
- 239000002245 particle Substances 0.000 claims abstract description 20
- 239000011230 binding agent Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 16
- 239000002131 composite material Substances 0.000 claims abstract description 14
- 238000009694 cold isostatic pressing Methods 0.000 claims abstract description 6
- 238000009818 secondary granulation Methods 0.000 claims abstract description 6
- 239000011159 matrix material Substances 0.000 claims description 25
- 239000000203 mixture Substances 0.000 claims description 19
- 239000000243 solution Substances 0.000 claims description 19
- 238000005245 sintering Methods 0.000 claims description 18
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 17
- 238000005469 granulation Methods 0.000 claims description 10
- 230000003179 granulation Effects 0.000 claims description 10
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 9
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 9
- 229920005610 lignin Polymers 0.000 claims description 8
- 239000004375 Dextrin Substances 0.000 claims description 7
- 229920001353 Dextrin Polymers 0.000 claims description 7
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 7
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 7
- 235000019425 dextrin Nutrition 0.000 claims description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 5
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 5
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims description 4
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims description 4
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000004537 pulping Methods 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 238000011068 loading method Methods 0.000 claims description 3
- 239000007767 bonding agent Substances 0.000 claims description 2
- 238000000265 homogenisation Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000003754 machining Methods 0.000 claims description 2
- 238000012856 packing Methods 0.000 claims description 2
- 230000002035 prolonged effect Effects 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000011550 stock solution Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000010304 firing Methods 0.000 abstract description 10
- 230000003628 erosive effect Effects 0.000 abstract description 4
- 239000006060 molten glass Substances 0.000 abstract description 4
- 238000005507 spraying Methods 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 239000003232 water-soluble binding agent Substances 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 13
- 238000000462 isostatic pressing Methods 0.000 description 8
- 229910052814 silicon oxide Inorganic materials 0.000 description 8
- 239000004408 titanium dioxide Substances 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 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 4
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 238000000227 grinding Methods 0.000 description 3
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 3
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 3
- 229910052845 zircon Inorganic materials 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- UMUXBDSQTCDPJZ-UHFFFAOYSA-N chromium titanium Chemical compound [Ti].[Cr] UMUXBDSQTCDPJZ-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000005543 nano-size silicon particle Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- WOWYFSLPUZRCPA-UHFFFAOYSA-N [O-2].[Ti+4].[O-2].[Cr+3].[Si+2]=O.[O-2].[Al+3] Chemical compound [O-2].[Ti+4].[O-2].[Cr+3].[Si+2]=O.[O-2].[Al+3] WOWYFSLPUZRCPA-UHFFFAOYSA-N 0.000 description 1
- QQHSIRTYSFLSRM-UHFFFAOYSA-N alumanylidynechromium Chemical compound [Al].[Cr] QQHSIRTYSFLSRM-UHFFFAOYSA-N 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- ZDVUHAMBHUYTNW-UHFFFAOYSA-N chromium(3+) oxygen(2-) titanium(4+) Chemical compound [O-2].[Ti+4].[O-2].[Cr+3] ZDVUHAMBHUYTNW-UHFFFAOYSA-N 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000006104 solid solution Substances 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
- C04B35/12—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 chromium oxide
-
- 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
-
- 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
- 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
- C04B35/632—Organic additives
- C04B35/634—Polymers
-
- 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
- C04B35/632—Organic additives
- C04B35/634—Polymers
- C04B35/63404—Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63416—Polyvinylalcohols [PVA]; Polyvinylacetates
-
- 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
- C04B35/632—Organic additives
- C04B35/636—Polysaccharides or derivatives 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
- 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
- C04B35/632—Organic additives
- C04B35/636—Polysaccharides or derivatives thereof
- C04B35/6365—Cellulose or derivatives 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
- C04B2235/3232—Titanium oxides or titanates, e.g. rutile or anatase
-
- 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
-
- 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
- C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
- C04B2235/54—Particle size related information
- C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
- C04B2235/5436—Particle size related information expressed by the size of the particles or aggregates thereof micrometer sized, i.e. from 1 to 100 micron
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
-
- 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
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/658—Atmosphere during thermal treatment
-
- 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
- C04B2235/70—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
-
- 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
- C04B2235/70—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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
本发明提供了一种高纯、高强的骨料型致密氧化铬制品的制备方法，包括：首先将粒径≤45μm的氧化铬复合微粉和水溶性结合剂湿法混匀后喷雾造粒；在一定级配的致密铬边角骨料内加入磷酸二氢铝溶液，湿碾机内湿碾5~10分钟后，加入造粒料继续湿碾15分钟进行二次造粒；然后在160MPa压力条件下冷等静压成型；最后置于Ar气正压保护下，于1550~1650℃保温12~24h，制得高纯、高强的骨料型致密氧化铬制品。本发明具有较高的抗玻璃液的侵蚀；有机和无机结合剂的协同效应和无机结合剂的加入显著提高了对砖坯的中高温强度，提高了产品的烧成成品率。
Description
技术领域
本发明属于耐火材料领域，主要涉及玻纤和玻璃行业应用的一种均质且具有高纯、高强的骨料型致密铬制品的制备方法。
背景技术
与致密型致密铬砖相比，骨料型致密铬砖结构内含有较多的大粒径骨料，体积密度略小，显气孔率较高，具有较好的抗玻璃液侵蚀性能和抗热冲击性能，被广泛应用于无碱玻纤或增强玻纤、C-玻璃、瓶罐玻璃和玻璃棉等池窑的加料口拐角砖、流液洞盖板砖、背衬材料和漏板砖等。
一般是将一定颗粒级配且具有一定化学比例组分的烧结氧化铬骨料和预混基质及结合剂混合均匀后等静压成型，然后在一定条件下高温烧成骨料型致密铬砖；涂淑进等在CN201610509056.9中将粒径为3~0mm的含氧化铬、氧化硅和氧化钛组分的烧结氧化铬合成骨料、粒径≤20μm 的含有氧化铬、氧化锆、氧化硅和氧化钛等组分混合，球磨而成的基质和结合剂混合制得半干式成型料，然后模压成型后，1550~1700℃烧成具有较好抗侵蚀性能的致密铬制品；李盛德等在CN201811008278.8中将氧化铬粉，钛白粉，氧化硅粉、氧化锆粉、锆英石粉和氧化铝粉及电熔锆刚玉砖粉等组分的微粉研磨、混合后烧制，破碎成粒径为1~0mm的氧化铬合成骨料，然后将氧化铬合成细粉和氧化铬粉共同研磨成粒径≤20μm的基质，按质量比为（65~35）：（35~65）的骨料和基质的比例，外加（0.3~2.5）wt.%的含有糊精、木质素、羧甲基纤维素钠、纳米二氧化硅等的结合剂溶液混匀后，等静压成型，1550~1680℃烧制成具有一定结构均匀性和抗热震性能的致密型氧化铬砖；同时，李盛德等人也在CN201811220598.X中将高纯氧化铬粉，钛白粉，氧化硅粉、氧化锆粉和氧化铝粉等组分的微粉研磨混合后，成型烧制破碎后制成粒径为5~0.06mm的氧化铬混合骨料，通过研磨粒径≤0.06mm的高纯氧化铬粉、氧化铬合成料细粉，硅微粉，钛白粉，氧化铝粉和氧化锆粉及其（0.2~0.5）wt.%的含有糊精、木质素及羧甲基纤维素钠等粉状结合剂混合制得基质混合料，然后按质量比为（58~80）：（18~40）的骨料和基质的比例，外加（1.2~2.0）wt.%的含有聚乙烯醇、水玻璃和硅溶胶等液体结合剂混匀等静压成型后，于1550~1680℃烧制成成品率较高的氧化铬砖；何良德等在CN201811009291.5中将氧化铬粉，钛白粉，氧化硅粉，氧化锆粉，锆英石粉和氧化铝粉混合成型后烧制成氧化铬混合骨料，通过混合研磨氧化铬粉，氧化铬合成料细粉，氧化硅粉，钛白粉，氧化铝粉，氧化锆粉和锆英石粉及结合剂制得基质混合料，然后按骨料和基质质量比为（63~71）：（29~37）的比例，在粒径为0.074~4mm的骨料内外加（1~2.5）wt.%的含有聚乙烯醇、糊精、木质素、羧甲基纤维素钠、纳米二氧化硅等的结合剂溶液，混匀加入基质后等静压成型，于1560~1680℃烧制成具有较高抗热震性能的骨料型氧化铬砖。四个专利在氧化铬粉、钛白粉和氧化锆粉的基础上添加了氧化硅，锆英石和氧化铝粉等金属氧化物微粉，在非保护气氛条件下于1550~1700℃高温烧结制备成骨料型氧化铬砖。
研究发现，由于氧化硅粉等氧化物微粉的加入，氧化铬砖内的烧结体系和烧结机理已发生改变，烧结体系已由原氧化铬-氧化钛体系转变为氧化铬-氧化钛-氧化硅-氧化铝等物相体系，烧结机理也由蒸发-凝聚和钛铬的高温固溶为主要烧结机理转变为高温液相和铝铬、钛铬固溶烧结为主，烧结效果对烧结气氛的要求相对变弱。因此，四个专利在非气氛保护要求的条件下烧结氧化铬砖。此体系烧制的骨料型氧化铬砖虽亦具有较好的烧结效果，但其化学组分内的杂质含量相对较高，玻璃相偏多，这些都直接或间接的降低了玻璃液对其的抗侵蚀和抗热震性能，影响了其使用寿命。
发明内容
本发明所要解决的技术问题是要克服上述现有技术存在的不足而提供的一种工艺可控，设备要求低，适于大规模生产，且具有高纯、高强的骨料型致密氧化铬制品的制备方法。
本发明为解决上述问题而提出的技术方案如下：
一种高纯高强骨料型氧化铬制品的制备方法，选用化学组分一致的骨料与基质，使其能保证砖材内各组分性能的均一性；所述的基质为粒径≤45μm的氧化铬复合微粉；所述的致密铬骨料为致密铬制品冷加工后的边角料破碎料；将粒径≤45μm的氧化铬复合微粉和0.5~1.0wt.%的水溶性有机结合剂湿法混匀后喷雾造粒，使基质各组分混合均一，且与骨料颗粒级配匹配度大；在一定级配的致密铬骨料内加入磷酸二氢铝溶液，湿碾机内湿碾后，加入造粒粉继续湿碾二次造粒；在骨料的表面添加磷酸二氢铝溶液，以湿碾的方式匀化骨料和基质混合料并造粒，以达到骨料和基质料的最佳紧密堆积，提高了坯体的成型密度和成型强度，避免了后续脱模、转运和装窑等工序对砖坯的损伤，提高了坯体的成品率；然后将二次造粒混合料于160MPa压力条件下冷等静压成型；最后将干燥后的坯体置于Ar气气氛保护的窑炉内正压高温烧结制得高纯、高强的骨料型致密氧化铬制品，烧成过程中有机和无机结合剂的非一致脱水和失效，延长了中低温过程气体的排出过程，降低了由气体的排出而造成对产品微观结构的损伤，提高了产品的成品率。
所述的基质为粒径≤45μm的氧化铬复合微粉；所述的氧化铬复合微粉由氧化铬、氧化钛和氧化锆微粉组成，其中氧化铬的含量为91.0~96.0wt.%，氧化钛的含量为3.7~4.0wt.%，氧化锆微粉的含量为0~5.0wt.%，其各微粉均为工业纯，粒径均≤45μm。
所述的氧化铬复合微粉和水溶性有机结合剂的匀化造粒方式为湿法制浆喷雾造粒。其中的水溶性有机结合剂为聚乙烯醇、木质素、糊精及羧甲基纤维素的一种或几种有机混合物，其添加量为0.5~1.0wt.%。
所述致密铬骨料的粒径分别为5~3mm、3~~1mm和1~0.2mm，颗粒体积密度为4.15~4.55g/cm3，其质量百分含量总和为30~70wt.%；造粒粉料的质量百分含量为70~30wt.%。
所述的一定级配的致密铬骨料和磷酸二氢铝溶液在湿碾机内预湿碾5~10分钟，然后加入造粒粉料两次湿碾15分钟而成，其磷酸二氢铝溶液为磷酸二氢铝原液或固体磷酸二氢铝一种或两种加水配制而成，其配制后磷酸二氢铝溶液的比重为1.35~1.45，且加入量为1.0~1.5wt.%。
所述的二次造粒混合料冷等静压成型成氧化铬坯体，在Ar气保护的窑炉内正压1550~1650℃保温12~24h后制得高纯、高强的骨料型致密氧化铬制品。
本发明提出的一种高纯、高强骨料型致密氧化铬制品的制备方法，以氧化铬微粉、氧化钛微粉和氧化锆微粉为主原料，加入一定的水溶性结合剂湿磨混合后喷雾或离心造粒成造粒料；按一定的颗粒级配将致密铬骨料预混后，加入磷酸二氢铝溶液湿碾5~10分钟后，继续加入造粒料湿碾混合15分钟，然后冷等静压成型，在Ar气保护条件下于1550~1650℃高温烧成骨料型致密铬砖；砖内骨料和基质各组分间一致性高，较低的杂质含量确保了制备的骨料型致密铬砖具有较高的抗玻璃液的侵蚀；有机和无机结合剂的协同效应保证了冷等静压成型后坯体具有较高的强度，这对于后续脱模、转运和装窑等工艺过程要求降低，可显著降低成型后坯体内外所受损伤的概率；有机和无机结合剂的不一致脱水过程及无机结合剂对砖坯中高温强度的改善，都直接或间接的提高了产品的烧成成品率。此外，致密铬冷加工边角骨料的加入降低了骨料型致密铬砖的生产成本。坯体愈大，效果愈明显。本发明的设备均为耐火材料生产常规使用设备，对设备的要求低，工艺过程易于控制，所述骨料型氧化铬制品的制备方法具有生产成本低，且易于工业化推广和应用的特点。
具体实施方式
下面对本发明所述的烧结方法进行详细描述。其中本发明所述的高纯、高强骨料型致密氧化铬制品不限于实施例中提到的几种产品，只要该骨料型致密氧化铬制品中氧化铬含量（按百分比重量计）在91.0~96.0wt.%，都属于本发明所述的高纯、高强骨料型致密氧化铬制品，都属于本发明的保护范围。
实施例1：选用粒径≤45μm的氧化铬复合微粉：Cr2O3微粉96.0wt.%、TiO2微粉4.0wt.%，与木质素0.2wt.%、羧甲基纤维素0.15wt.%和聚乙烯醇0.15wt.%均匀混合制浆喷雾造粒；将粒径分别为5~3mm、3~1mm和1~0.2mm的致密铬边角骨料分别按25wt.%、55wt.%和20wt.%比例预混5分钟后，外加1.5wt.%的磷酸二氢铝溶液(比重1.35)，湿碾10分钟后，按质量比为70：30的骨料和基质的比例加入造粒料，再湿碾15分钟混匀后等静压成型，Ar气正压保护下，于1600℃保温14h后烧制成高纯、高强的骨料型致密氧化铬砖。比较例1为未添加磷酸二氢铝的同规格试样在同条件下烧结的骨料型致密氧化铬砖。它们内外部区域的体积密度、显气孔率、耐压强度和烧成成品率比较见表1。
表1
实施例2：选用粒径≤45μm的氧化铬复合微粉：Cr2O3微粉91.0wt.%、TiO2微粉4.0wt.%，ZrO2微粉5.0wt.%，与糊精0.2wt.%、木质素0.25wt.%、羧甲基纤维素0.1wt.%和聚乙烯醇0.15wt.%均匀混合制浆离心造粒；将粒径分别为5~3mm、3~1mm和1~0.2mm的致密铬边角料分别按35wt.%、45wt.%和20wt.%比例预混5分钟后，外加1.25wt.%的磷酸二氢铝溶液(比重1.4)湿碾5分钟后，按质量比为60：40的骨料和基质的比例加入造粒料，再湿碾15分钟混匀后等静压成型，Ar气正压保护下，于1550℃保温24h后烧制成高纯、高强的骨料型致密氧化铬砖。比较例2为未加入磷酸二氢铝溶液的同规格试样在同条件下烧结的骨料型致密氧化铬砖。它们内外部区域的体积密度、显气孔率、耐压强度和烧成成品率比较见表2。
表2
实施例3：选用粒径≤45μm的氧化铬复合微粉：Cr2O3微粉94.0wt.%、TiO2微粉3.7wt.%，ZrO2微粉2.3wt.%，与糊精0.7wt.%和聚乙烯醇0.3wt.%均匀混合制浆喷雾造粒；将粒径分别为5~3mm、3~1mm和1~0.2mm的致密铬边角料分别按10wt.%、50wt.%和40wt.%比例预混5分钟后，外加1.0wt.%的磷酸二氢铝溶液(比重1.38)湿碾10分钟后，按质量比为30：70的骨料和基质的比例加入造粒料，再湿碾15分钟混匀后等静压成型，Ar气正压保护下，于1650℃保温12h后烧制成高纯、高强的骨料型致密氧化铬砖。比较例3为未加入磷酸二氢铝溶液的同规格试样在同条件下烧结的骨料型致密氧化铬砖。它们内外部区域的体积密度、显气孔率、耐压强度和烧成成品率比较见表3。
表3
实施例4：选用粒径≤45μm的氧化铬复合微粉：Cr2O3微粉92.0wt.%、TiO2微粉3.9wt.%，ZrO2微粉4.1wt.%，与木质素0.75wt.%混合制浆喷雾造粒；将粒径分别为5~3mm、3~1mm和1~0mm的致密铬边角骨料分别按10wt.%、65wt.%和25wt.%比例预混5分钟后，外加1.0wt.%的磷酸二氢铝溶液(比重1.45)，湿碾5分钟后，按质量比为45：55的骨料和基质的比例加入造粒料，再湿碾15分钟混匀后等静压成型，Ar气正压保护下，于1600℃保温18h烧制成均质高成品率的骨料型致密氧化铬砖。比较例4为未加入磷酸二氢铝的同规格试样在同条件下烧结的骨料型致密氧化铬砖。它们内外部区域的体积密度、显气孔率、耐压强度和烧成成品率比较见表4。
表4
Claims (6)
1.一种高纯高强骨料型氧化铬制品的制备方法，其特征在于：选用化学组分一致的骨料与基质，使其能保证砖材内各组分性能的均一性；所述的基质为粒径≤45μm的氧化铬复合微粉；所述的致密铬骨料为致密铬制品冷加工后的边角料破碎料；将粒径≤45μm的氧化铬复合微粉和0.5~1.0wt.%的水溶性有机结合剂湿法混匀后喷雾造粒，使基质各组分混合均一，且与骨料颗粒级配匹配度大；在一定级配的致密铬骨料内加入磷酸二氢铝溶液，湿碾机内湿碾后，加入造粒粉继续湿碾二次造粒；在骨料的表面添加磷酸二氢铝溶液，以湿碾的方式匀化骨料和基质混合料并造粒，以达到骨料和基质料的最佳紧密堆积，提高了坯体的成型密度和成型强度，避免了后续脱模、转运和装窑等工序对砖坯的损伤，提高了坯体的成品率；然后将二次造粒混合料于160MPa压力条件下冷等静压成型；最后将干燥后的坯体置于Ar气气氛保护的窑炉内正压高温烧结制得高纯、高强的骨料型致密氧化铬制品，烧成过程中有机和无机结合剂的非一致脱水和失效，延长了中低温过程气体的排出过程，降低了由气体的排出而造成对产品微观结构的损伤，提高了产品的成品率。
2.如权利要求书1所述的一种高纯高强骨料型氧化铬制品的制备方法，其特征在于：所述的氧化铬复合微粉由氧化铬、氧化钛和氧化锆微粉组成，其中氧化铬的含量为91.0~96.0wt.%，氧化钛的含量为3.7~4.0wt.%，氧化锆微粉的含量为0~5.0wt.%，其各微粉均为工业纯，粒径均≤45μm。
3.如权利要求书1或2所述的一种高纯高强骨料型氧化铬制品的制备方法，其特征在于：所述的氧化铬复合微粉和水溶性有机结合剂的匀化造粒方式为湿法制浆喷雾造粒；其中水溶性有机结合剂为聚乙烯醇、木质素、糊精及羧甲基纤维素的一种或几种有机结合剂，其添加量为0.5~1.0wt.%。
4.如权利要求书1~3任一所述的一种高纯高强骨料型氧化铬制品的制备方法，其特征在于：所述的致密铬骨料的粒径分别为5~3mm、3~1mm和1~0.2mm，颗粒体积密度为4.15~4.55g/cm3，其质量百分含量总和为30~70wt.%；造粒粉料的质量百分含量为70~30wt.%。
5.如权利要求书1所述的一种高纯高强骨料型氧化铬制品的制备方法，其特征在于：所述的一定级配的致密铬边角骨料和磷酸二氢铝溶液在湿碾机内湿碾5~10分钟，然后加入造粒粉料两次湿碾15分钟左右而成，其磷酸二氢铝溶液为液体磷酸二氢铝原液或固体磷酸二氢铝的一种或两种加水配制而成，其配制后的磷酸二氢铝溶液的比重为1.35~1.45，加入量为1.0~1.5wt.%。
6.如权利要求书1如权利要求书1~3任一所述的一种高纯高强骨料型氧化铬制品的制备方法，其特征在于：制备方法，其特征在于，所述的成型后的氧化铬坯体，在Ar气正压保护下，于1550~1650℃保温12~24h后制得高纯、高强的骨料型致密氧化铬制品。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210947770.1A CN115385670A (zh) | 2022-08-09 | 2022-08-09 | 一种高纯高强骨料型氧化铬制品的制备方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210947770.1A CN115385670A (zh) | 2022-08-09 | 2022-08-09 | 一种高纯高强骨料型氧化铬制品的制备方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115385670A true CN115385670A (zh) | 2022-11-25 |
Family
ID=84119495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210947770.1A Pending CN115385670A (zh) | 2022-08-09 | 2022-08-09 | 一种高纯高强骨料型氧化铬制品的制备方法 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115385670A (zh) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102079652A (zh) * | 2010-11-22 | 2011-06-01 | 武汉科技大学 | 一种高热震Cr2O3-Al2O3-ZrO2砖及其制备方法 |
| US20130167592A1 (en) * | 2010-08-10 | 2013-07-04 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Chromium oxide refractory material |
| CN104355637A (zh) * | 2014-11-13 | 2015-02-18 | 天津大学 | 一种利用纳米氧化锆增韧的高铬耐火材料的制备方法 |
| CN106830906A (zh) * | 2016-12-13 | 2017-06-13 | 中钢集团洛阳耐火材料研究院有限公司 | 一种低梯度差氧化铬制品的致密化方法 |
| CN109020521A (zh) * | 2018-08-31 | 2018-12-18 | 广州市石基耐火材料厂 | 致密型氧化铬砖及其制造方法 |
-
2022
- 2022-08-09 CN CN202210947770.1A patent/CN115385670A/zh active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130167592A1 (en) * | 2010-08-10 | 2013-07-04 | Saint-Gobain Centre De Recherches Et D'etudes Europeen | Chromium oxide refractory material |
| CN102079652A (zh) * | 2010-11-22 | 2011-06-01 | 武汉科技大学 | 一种高热震Cr2O3-Al2O3-ZrO2砖及其制备方法 |
| CN104355637A (zh) * | 2014-11-13 | 2015-02-18 | 天津大学 | 一种利用纳米氧化锆增韧的高铬耐火材料的制备方法 |
| CN106830906A (zh) * | 2016-12-13 | 2017-06-13 | 中钢集团洛阳耐火材料研究院有限公司 | 一种低梯度差氧化铬制品的致密化方法 |
| CN109020521A (zh) * | 2018-08-31 | 2018-12-18 | 广州市石基耐火材料厂 | 致密型氧化铬砖及其制造方法 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101928142B (zh) | 一种高纯氧化锆重质耐火制品及制备方法 | |
| CN106747367B (zh) | 一种高热震稳定性致密氧化铬制品的制备方法 | |
| CN107935608B (zh) | 使用致密锆英石骨料制备锆英石砖的方法 | |
| CN112592156B (zh) | 发泡陶瓷及其制备方法和应用 | |
| CN107805059A (zh) | 一种钢包底座砖及其制备方法 | |
| CN110272292A (zh) | 一种中间包镁质涂抹料及其制备方法 | |
| KR20120022960A (ko) | 크롬 산화물을 기반으로 하는 소결물 | |
| CN1117710C (zh) | 一种低水泥耐火浇注料及其制备方法 | |
| CN107434404B (zh) | 一种锆复合高性能电熔镁钙锆砖及其制造方法 | |
| CN115385670A (zh) | 一种高纯高强骨料型氧化铬制品的制备方法 | |
| CN112759363A (zh) | 一种发泡陶瓷复合添加剂、发泡陶瓷及其制备方法 | |
| CN108911721B (zh) | 骨料型氧化铬耐火材料及其制备方法 | |
| CN108727019B (zh) | 锆英石砖及其制备方法 | |
| CN115368121A (zh) | 一种均质高成品率骨料型致密铬制品的制备方法 | |
| CN106830906B (zh) | 一种低梯度差氧化铬制品的致密化方法 | |
| CN107973586A (zh) | 处理铬铁渣的方法和陶瓷砖 | |
| CN112110716B (zh) | 一种耐火材料生产工艺及其制备的耐火材料 | |
| CN103771877A (zh) | 玻璃熔窑用三抗烧结刚玉制品及其制法 | |
| CN112876267B (zh) | 一种钢化玻璃窑炉用陶瓷辊及其制造工艺 | |
| CN108529673B (zh) | 利用二氧化锆烧结废料生产二氧化锆纳米粉的方法 | |
| CN109867515B (zh) | 一种Al2O3-Ti3AlC2梯度陶瓷及其制备方法 | |
| KR20100104123A (ko) | 고온노즐용 내열 세라믹체 제조방법 | |
| CN104528817A (zh) | 钛酸铝粉体及其制备方法 | |
| CN110695362B (zh) | 一种Fe-Cr基复合陶瓷材料及其制备方法 | |
| CN113754414B (zh) | 一种高密度高强度中铝/中高铝氧化铝球磨介质及其制备方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20221125 |