CN115057693A - Tundish high-aluminum working lining dry material, working lining and preparation method thereof - Google Patents
Tundish high-aluminum working lining dry material, working lining and preparation method thereof Download PDFInfo
- Publication number
- CN115057693A CN115057693A CN202210990268.9A CN202210990268A CN115057693A CN 115057693 A CN115057693 A CN 115057693A CN 202210990268 A CN202210990268 A CN 202210990268A CN 115057693 A CN115057693 A CN 115057693A
- Authority
- CN
- China
- Prior art keywords
- working lining
- tundish
- parts
- dry material
- corundum
- 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
- 239000000463 material Substances 0.000 title claims abstract description 81
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 66
- 239000010431 corundum Substances 0.000 claims abstract description 66
- 229910001570 bauxite Inorganic materials 0.000 claims abstract description 36
- 238000005245 sintering Methods 0.000 claims abstract description 34
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 33
- 239000003607 modifier Substances 0.000 claims abstract description 32
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 239000011230 binding agent Substances 0.000 claims abstract description 16
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 51
- 238000002156 mixing Methods 0.000 claims description 23
- 239000007767 bonding agent Substances 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 12
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 11
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical group [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 11
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 11
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical group [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 9
- 239000005011 phenolic resin Substances 0.000 claims description 9
- 229920001568 phenolic resin Polymers 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 229910021538 borax Inorganic materials 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 239000004328 sodium tetraborate Substances 0.000 claims description 7
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 7
- 229910000278 bentonite Inorganic materials 0.000 claims description 6
- 239000000440 bentonite Substances 0.000 claims description 6
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 6
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 6
- 239000004327 boric acid Substances 0.000 claims description 6
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims description 6
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 5
- 239000004927 clay Substances 0.000 claims description 5
- 239000008103 glucose Substances 0.000 claims description 5
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 37
- 239000010959 steel Substances 0.000 abstract description 37
- 238000005266 casting Methods 0.000 abstract description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 17
- 238000010276 construction Methods 0.000 abstract description 13
- 239000002893 slag Substances 0.000 abstract description 11
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 16
- 239000000395 magnesium oxide Substances 0.000 description 8
- 235000012245 magnesium oxide Nutrition 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 229910052749 magnesium Inorganic materials 0.000 description 5
- 239000011777 magnesium Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 230000024121 nodulation Effects 0.000 description 4
- 239000011819 refractory material Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 229910052596 spinel Inorganic materials 0.000 description 3
- 239000011029 spinel Substances 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 238000002679 ablation Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- -1 magnesium aluminate Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 201000001880 Sexual dysfunction Diseases 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000007306 turnover Effects 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
- C04B35/103—Refractories from grain sized mixtures containing non-oxide refractory materials, e.g. carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/02—Linings
-
- 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
-
- 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
- C04B35/63448—Polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B35/63472—Condensation polymers of aldehydes or ketones
- C04B35/63476—Phenol-formaldehyde condensation 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
- C04B35/64—Burning or sintering processes
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3409—Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax
-
- 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
- C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention provides a tundish high-aluminum working lining dry material, a working lining and a preparation method thereof, wherein the preparation raw materials of the tundish high-aluminum working lining dry material comprise the following components in parts by mass: 80-100 parts of bauxite and corundum, 2-8 parts of binding agent, 1-3 parts of sintering agent and 1-3 parts of modifier. The tundish working lining dry material does not contain MgO, and can meet the steel casting requirement of aluminum-containing steel; the body density is high, the strength is high, and the requirements of site demoulding construction can be met; meanwhile, the coating has good slag corrosion resistance.
Description
Technical Field
The invention belongs to the technical field of refractory materials, and particularly relates to a tundish high-aluminum working lining dry material, a working lining and a preparation method thereof.
Background
The steel smelting technology in China is greatly developed under the continuous effort of technologists, and clean steel also becomes a product pursued by some domestic steel mills for gaining the market and the international reputation. Therefore, a mature tundish working lining refractory material which is suitable for the smelting requirement of clean steel must be developed timely.
The tundish dry vibration material is widely applied to various large steel mills due to the advantages of convenient construction, short baking time, long service life, good slag resistance, small pollution to molten steel, good heat preservation effect, low energy consumption, low labor intensity, simple construction equipment, easy ladle turning and the like. The prior tundish magnesium dry material is most widely applied because the dry material has the characteristics of better high-iron and alkaline slag corrosion resistance, long service life, no molten steel pollution, convenient construction, easy ladle removal and ladle turning and the like.
When the steel factory pours the aluminum-containing steel, the aluminum deoxidation is used in the aluminum-containing steel, so that the [ O ] in the steel can be deoxidized]The content is reduced to a lower level, but the deoxidation product is Al 2 O 3 The melting point is high and difficult to remove from the steel. MgO in the working lining magnesium dry material is dissolved in steel to a certain amount and can react with a deoxidation product Al 2 O 3 The reaction produces magnesia-alumina spinel which has a high melting point. Leading to the phenomena of water gap nodulation, casting blank inclusion and the like which often occur in the casting and pouring process of the aluminum-containing steel, and causing accidents such as the interruption of a casting machine, unqualified product quality and the like. According to statistics, when a certain steel mill pours the steel containing aluminum, the molten steel flowsThe proportion of accident stop casting caused by sexual problems is 8%, which brings great influence to smooth production. Meanwhile, the falling of the plug attached to the tundish nozzle wall can cause the fluctuation of the liquid level of the crystallizer, and large-scale inclusions can be formed in steel, so that the accidents such as steel splitting and the like occur in the rolling process.
Therefore, the existing tundish magnesium working lining can not meet the steel casting requirement of the aluminum-containing steel, and the development of a tundish dry material suitable for the aluminum-containing steel is urgently needed.
Disclosure of Invention
The invention solves the technical problem of providing a tundish high-aluminum working lining dry material, a working lining and a preparation method thereof, wherein the tundish working lining dry material does not contain MgO and can meet the steel casting requirement of aluminum-containing steel; the body density is high, the strength is high, and the requirements of site demoulding construction can be met; meanwhile, the coating has good slag corrosion resistance.
In order to solve the problems, the invention provides a tundish high-alumina working lining dry material, which is prepared from the following raw materials in parts by mass:
80-100 parts of bauxite and corundum, 2-8 parts of binding agent, 1-3 parts of sintering agent and 1-3 parts of modifier.
Preferably, the preparation raw materials comprise the following components in parts by mass:
92-94 parts of bauxite and corundum, 4-6 parts of binding agent, 1-2 parts of sintering agent and 1-2 parts of modifier.
Preferably, the mass ratio of bauxite with the granularity of 5-3mm to corundum, bauxite with the granularity of 2-1mm to corundum, bauxite with the granularity of 0.83-0.074 mm to corundum and bauxite with the granularity of less than 0.074mm to corundum is (10-20): (20-25): (20-40): (22-28).
Preferably, in the bauxite, Al 2 O 3 ≥80wt%，Fe 2 O 3 Not more than 2.5wt%, and the volume density of the particles is not less than 3.05g/cm 3 ；
In corundum, Al 2 O 3 ≥99wt%，Fe 2 O 3 Not more than 0.1wt%, and the volume density of the particles is not less than 3.45g/cm 3 。
Preferably, the binder is phenolic resin or glucose.
Preferably, the sintering agent is one or a mixture of more of red clay, bentonite, boric anhydride, boric acid and borax.
Preferably, the modifier is silicon carbide.
The invention also provides a tundish high-alumina working lining which is prepared by adopting the tundish high-alumina working lining dry material.
The invention also provides a preparation method of the tundish high-alumina working lining, which comprises the following steps:
s1, mixing bauxite, corundum, the bonding agent, the sintering agent and the modifier according to the selected mass parts to obtain a tundish high-alumina working lining dry material;
and S2, carrying out dry shaping and baking on the tundish high-alumina working lining obtained in the step S1 to obtain the tundish high-alumina working lining.
Preferably, step S1 specifically includes the following steps:
mixing bauxite and corundum for 2-3min according to the selected mass parts, then adding the bonding agent, the sintering agent and the modifier, and mixing for 5-6min to obtain the tundish high-alumina working lining dry material.
Preferably, step S2 specifically includes the following steps:
pouring the dry material of the tundish high-aluminum working lining between the outer wall of the tundish mold and the tundish permanent lining, starting a vibration motor to vibrate for 5-10min, baking at the temperature of 200-.
Compared with the prior art, the invention has the following beneficial effects:
the tundish high-alumina working lining dry material adopts bauxite or corundum as a main raw material, has stable chemical properties, and has good resistance to acid and alkaline steel slag; because no MgO is contained, the casting steel requirement of the aluminum-containing steel can be met, the phenomena of water gap nodulation, casting blank inclusion and the like which often occur in the casting process and the pouring process of the aluminum-containing steel are avoided, and the production is ensuredMoving forward; because no MgO is contained, Al which is a deoxidation product cannot be mixed with 2 O 3 The magnesium aluminate spinel is generated by reaction to cause casting blank inclusion; the main crystal phases of the raw materials of bauxite and corundum are alpha-Al 2 O 3 The linear expansion coefficient of which is 8.0 x 10 -6 ℃ -1 Approximately periclase (linear expansion coefficient of 15X 10) -6 ℃ -1 ) 1/2, the probability of the aluminum dry material collapsing during the baking process is greatly reduced. The tundish high-aluminum working lining dry material further accurately controls the mass parts of the main material and the additive, and improves the compressive strength and the ablation resistance of the working lining prepared from the tundish working lining dry material; the particle grading adopts a broken-grade mode, so that the volume density of the dry material can be improved, and the slag corrosion resistance of the dry material is further enhanced.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a tundish high-alumina working lining dry material, which comprises the following raw materials in parts by mass:
80-100 parts of bauxite and corundum, 2-8 parts of binding agent, 1-3 parts of sintering agent and 1-3 parts of modifier.
The tundish high-aluminum working lining dry material of the embodiment adopts bauxite or corundum as a main raw material, and the aluminum dry material has stable chemical property and good resistance to acid and alkaline steel slag; the dry material does not contain MgO, so that the steel casting requirement of the aluminum-containing steel can be met, the phenomena of water gap nodulation, casting blank inclusion and the like of the aluminum-containing steel in the casting process are avoided, and the smooth production is ensured; because the raw materials and the additive do not contain MgO, the raw materials and the additive do not react with the deoxidation product Al 2 O 3 The magnesium aluminate spinel is generated by reaction to cause casting blank inclusion; the raw materials of bauxite and corundum have a main crystal phase of alpha-Al 2 O 3 The linear expansion coefficient of which is 8.0 x 10 -6 ℃ -1 Approximately periclase (linear expansion coefficient of 15X 10) -6 ℃ -1 ) 1/2, the probability of the aluminum dry material collapsing during the baking process is greatly reduced.
In some embodiments, the tundish high-alumina working lining dry material is prepared from the following components in parts by mass:
92-94 parts of bauxite and corundum, 4-6 parts of binding agent, 1-2 parts of sintering agent and 1-2 parts of modifier.
In the embodiment, the compression strength and the ablation resistance of the working lining prepared from the dry material of the tundish working lining are improved by further accurately controlling the mass parts of the main material and the additive.
In some embodiments, the mass ratio of bauxite to corundum of 5-3mm particle size, bauxite to corundum of 2-1mm particle size, bauxite to corundum of 0.83-0.074 mm particle size, bauxite to corundum of <0.074mm particle size is (10-20): (20-25): (20-40): (22-28).
The particle grading of the embodiment adopts a step-off type, so that the volume density of the dry material can be improved, and the slag corrosion resistance of the dry material is further enhanced.
In some embodiments, the bauxite contains Al 2 O 3 ≥80wt%，Fe 2 O 3 Not more than 2.5wt%, and the volume density of the particles is not less than 3.05g/cm 3 (ii) a In corundum, Al 2 O 3 ≥99wt%，Fe 2 O 3 Not more than 0.1wt%, and the volume density of the particles is not less than 3.45g/cm 3 。
In the embodiment of the invention, the binder is used for baking the dry material to 200-400 ℃ through a belt die so as to obtain enough demoulding strength, and in some embodiments, the binder is phenolic resin or glucose.
In the embodiment of the invention, the sintering agent can effectively promote the dry material to be sintered on the hot surface of the working layer to form a sintering layer with proper thickness within a certain temperature range, and the loose material behind the dry material cannot be sintered to a higher degree. In some embodiments, the sintering agent is one or more of red clay, bentonite, boric anhydride, boric acid and borax.
In some embodiments, the sintering agent is one of boric anhydride, boric acid and borax, and B is contained in the boric anhydride, the boric acid and the borax 2 O 3 ，B 2 O 3 Melting at 450-550 deg.C to obtain certain strength, and finally forming 9Al with melting point up to 1950 deg.C 2 O 3 
2B 2 O 3 And the high-temperature performance of the dry material cannot be influenced.
In the embodiment of the invention, the modifier is used for forming SiO between the refractory material and the slag 2 And the dense layer hinders the penetration and corrosion of slag and protects the carbon inside the refractory material from being oxidized. In some embodiments, the modifier is silicon carbide.
The second aspect of the embodiment of the invention provides a tundish high-alumina working lining which is prepared by adopting the tundish high-alumina working lining dry material.
A third aspect of the embodiment of the present invention provides a method for preparing the tundish high-alumina working lining, including the following steps:
s1, mixing bauxite, corundum, the bonding agent, the sintering agent and the modifier according to the selected mass parts to obtain a tundish high-alumina working lining dry material;
and S2, carrying out dry shaping and baking on the tundish high-alumina working lining obtained in the step S1 to obtain the tundish high-alumina working lining.
In some embodiments, step S1 specifically includes the following steps:
mixing bauxite and corundum for 2-3min according to the selected mass parts, then adding the bonding agent, the sintering agent and the modifier, and mixing for 5-6min to obtain the tundish high-alumina working lining dry material.
In some embodiments, step S2 specifically includes the following steps:
pouring the dry material of the tundish high-aluminum working lining between the outer wall of the tundish mold and the tundish permanent lining, starting a vibration motor to vibrate for 5-10min, baking at the temperature of 200-.
The starting materials mentioned in the examples of the present invention are commercially available.
Example 1
The tundish high-aluminum working lining dry material provided by the embodiment is prepared from the following raw materials in parts by mass:
10 parts of bauxite with the granularity of 5-3mm, 25 parts of bauxite with the granularity of 2-1mm, 30 parts of bauxite with the granularity of 0.83-0.074 mm, 28 parts of bauxite fine powder with the granularity of less than 0.074mm, 4 parts of bonding agent phenolic resin, 2 parts of sintering agent red clay and 1 part of modifier silicon carbide.
The preparation method of the tundish high-alumina working lining comprises the following steps:
s1, mixing bauxite with different grain compositions according to the selected mass parts for 2min, then adding a bonding agent, a sintering agent and a modifier, and mixing for 5min to obtain a tundish high-alumina working lining dry material;
s2, during on-site construction, pouring the dry material of the tundish high-aluminum working lining obtained in the step S1 between the outer wall of the tundish mould and the tundish permanent lining, starting a vibration motor to vibrate for 10min, baking at the temperature of 200 ℃ for 1h, and demolding to obtain the tundish high-aluminum working lining.
Example 2
The tundish high-aluminum working lining dry material provided by the embodiment is prepared from the following raw materials in parts by mass:
10 parts of corundum with the granularity of 5-3mm, 25 parts of corundum with the granularity of 2-1mm, 30 parts of corundum with the granularity of 0.83-0.074 mm, 27 parts of corundum fine powder with the granularity of less than 0.074mm, 4 parts of binding agent phenolic resin, 2 parts of sintering agent bentonite and 2 parts of modifier silicon carbide.
The preparation method of the tundish high-alumina working lining comprises the following steps:
s1, mixing corundum with different grain grades for 3min according to the selected mass parts, adding a bonding agent, a sintering agent and a modifier, and mixing for 6min to obtain the tundish high-alumina working lining dry material.
S2, during on-site construction, pouring the dry material of the tundish high-aluminum working lining obtained in the step S1 between the outer wall of the tundish mould and the tundish permanent lining, starting a vibration motor to vibrate for 5min, baking at 400 ℃ for 1.5h, and demolding to obtain the tundish high-aluminum working lining.
Example 3
The tundish high-aluminum working lining dry material provided by the embodiment is prepared from the following raw materials in parts by mass:
15 parts of corundum with the granularity of 5-3mm, 25 parts of corundum with the granularity of 2-1mm, 25 parts of corundum with the granularity of 0.83-0.074 mm, 27 parts of corundum fine powder with the granularity of less than 0.074mm, 6 parts of bonding agent glucose, 1 part of sintering agent boric acid and 1 part of modifier silicon carbide.
The preparation method of the tundish high-alumina working lining comprises the following steps:
s1, mixing corundum with different grain grades for 2min according to the selected mass parts, adding a bonding agent, a sintering agent and a modifier, and mixing for 5min to obtain the tundish high-alumina working lining dry material.
S2, during on-site construction, pouring the dry material of the tundish high-aluminum working lining obtained in the step S1 between the outer wall of the tundish mould and the tundish permanent lining, starting a vibration motor to vibrate for 8min, baking at the temperature of 250 ℃ for 1.5h, and demolding to obtain the tundish high-aluminum working lining.
Example 4
The tundish high-aluminum working lining dry material provided by the embodiment is prepared from the following raw materials in parts by mass:
15 parts of corundum with the granularity of 5-3mm, 25 parts of corundum with the granularity of 2-1mm, 28 parts of corundum with the granularity of 0.83-0.074 mm, 24 parts of corundum fine powder with the granularity of less than 0.074mm, 6 parts of bonding agent glucose, 1 part of sintering agent borax, 1 part of borax and 1 part of modifier silicon carbide.
The preparation method of the tundish high-alumina working lining comprises the following steps:
s1, mixing corundum with different grain gradations for 3min according to the selected mass parts, and then adding a bonding agent, a sintering agent and a modifier for mixing for 5min to obtain the tundish high-alumina working lining dry material.
S2, during on-site construction, pouring the dry material of the tundish high-aluminum working lining obtained in the step S1 between the outer wall of the tundish mould and the tundish permanent lining, starting a vibration motor to vibrate for 6min, baking for 1h at the temperature of 300 ℃, and demoulding to obtain the tundish high-aluminum working lining.
Example 5
The tundish high-alumina working lining dry material described in the embodiment is prepared from the following raw materials in parts by mass:
20 parts of corundum with the granularity of 5-3mm, 24 parts of corundum with the granularity of 2-1mm, 25 parts of corundum with the granularity of 0.83-0.074 mm, 23 parts of corundum fine powder with the granularity of less than 0.074mm, 5 parts of binding agent phenolic resin, 1 part of sintering agent boric anhydride and 2 parts of modifier silicon carbide.
The preparation method of the tundish high-alumina working lining comprises the following steps:
s1, mixing corundum with different grain grades for 3min according to the selected mass parts, adding a bonding agent, a sintering agent and a modifier, and mixing for 5min to obtain the tundish high-alumina working lining dry material.
S2, during on-site construction, pouring the dry material of the tundish high-aluminum working lining obtained in the step S1 between the outer wall of the tundish mould and the tundish permanent lining, starting a vibration motor to vibrate for 6min, baking for 1h at the temperature of 350 ℃, and demoulding to obtain the tundish high-aluminum working lining.
Example 6
The tundish high-alumina working lining dry material described in the embodiment is prepared from the following raw materials in parts by mass:
20 parts of corundum with the granularity of 5-3mm, 24 parts of corundum with the granularity of 2-1mm, 25 parts of corundum with the granularity of 0.83-0.074 mm, 23 parts of corundum fine powder with the granularity of less than 0.074mm, 5 parts of binding agent phenolic resin, 1 part of sintering agent red clay and 2 parts of modifier silicon carbide.
The preparation method of the tundish high-alumina working lining comprises the following steps:
s1, mixing corundum with different grain grades for 3min according to the selected mass parts, adding a bonding agent, a sintering agent and a modifier, and mixing for 5min to obtain the tundish high-alumina working lining dry material.
S2, during on-site construction, pouring the dry material of the tundish high-aluminum working lining obtained in the step S1 between the outer wall of the tundish mould and the tundish permanent lining, starting a vibration motor to vibrate for 6min, baking for 1h at the temperature of 350 ℃, and demoulding to obtain the tundish high-aluminum working lining.
Example 7
The tundish high-aluminum working lining dry material provided by the embodiment is prepared from the following raw materials in parts by mass:
10 parts of corundum with the granularity of 5-3mm, 25 parts of corundum with the granularity of 2-1mm, 25 parts of corundum with the granularity of 0.83-0.074 mm, 20 parts of corundum fine powder with the granularity of less than 0.074mm, 8 parts of binding agent phenolic resin, 1 part of sintering agent bentonite and 1 part of modifier silicon carbide.
The preparation method of the tundish high-alumina working lining comprises the following steps:
s1, mixing corundum with different grain gradations for 3min according to the selected mass parts, and then adding a bonding agent, a sintering agent and a modifier for mixing for 6min to obtain the tundish high-alumina working lining dry material.
S2, during on-site construction, pouring the dry material of the tundish high-aluminum working lining obtained in the step S1 between the outer wall of the tundish mould and the tundish permanent lining, starting a vibration motor to vibrate for 5min, baking at 400 ℃ for 1.5h, and demolding to obtain the tundish high-aluminum working lining.
Example 8
The tundish high-aluminum working lining dry material provided by the embodiment is prepared from the following raw materials in parts by mass:
25 parts of corundum with the granularity of 5-3mm, 25 parts of corundum with the granularity of 2-1mm, 25 parts of corundum with the granularity of 0.83-0.074 mm, 25 parts of corundum fine powder with the granularity of less than 0.074mm, 2 parts of binding agent phenolic resin, 3 parts of sintering agent bentonite and 3 parts of modifier silicon carbide.
The preparation method of the tundish high-alumina working lining comprises the following steps:
s1, mixing corundum with different grain grades for 3min according to the selected mass parts, adding a bonding agent, a sintering agent and a modifier, and mixing for 6min to obtain the tundish high-alumina working lining dry material.
S2, during on-site construction, pouring the dry material of the tundish high-aluminum working lining obtained in the step S1 between the outer wall of the tundish mould and the tundish permanent lining, starting a vibration motor to vibrate for 5min, baking at 400 ℃ for 1.5h, and demolding to obtain the tundish high-aluminum working lining.
Tundish working lining performance detection
The dry materials of the tundish working lining obtained in the above embodiments were subjected to the volume density, compressive strength and linear change tests, and the test results are shown in table 1 below.
TABLE 1 results of testing the properties of the examples
The pouring test is carried out on the tundish high-alumina dry material in each embodiment in a certain steel mill, and the result proves that the dry material is slightly corroded after being off line and has good adaptability to acidic and alkaline slag; when pouring the aluminum-containing steel, the phenomena of water gap nodulation, casting blank inclusion and the like do not occur in the casting and pouring processes; the phenomena of bulging, collapsing and the like do not occur in the casting and steel casting processes, the ladle is easy to turn over after the production line is finished, and the integral service condition is good.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the invention.
Claims (10)
1. The tundish high-aluminum working lining dry material is characterized by comprising the following raw materials in parts by mass:
80-100 parts of bauxite and corundum, 2-8 parts of binding agent, 1-3 parts of sintering agent and 1-3 parts of modifier.
2. The tundish high-alumina working lining dry material as claimed in claim 1, characterized in that the preparation raw materials comprise the following components in parts by mass:
92-94 parts of bauxite and corundum, 4-6 parts of binding agent, 1-2 parts of sintering agent and 1-2 parts of modifier.
3. The tundish high-alumina working lining dry material according to claim 1, characterized in that:
the mass ratio of the bauxite with the granularity of 5-3mm to the corundum, the bauxite with the granularity of 2-1mm to the corundum, the bauxite with the granularity of 0.83-0.074 mm to the corundum and the bauxite with the granularity of less than 0.074mm to the corundum is (10-20): (20-25): (20-40): (22-28).
4. The tundish high-alumina working lining dry material according to claim 1, characterized in that:
in bauxite, Al 2 O 3 ≥80wt%，Fe 2 O 3 Not more than 2.5wt%, and the volume density of the particles is not less than 3.05g/cm 3 ；
In corundum, Al 2 O 3 ≥99wt%，Fe 2 O 3 Not more than 0.1wt%, and the volume density of the particles is not less than 3.45g/cm 3 。
5. The tundish high-alumina working lining dry material according to claim 1, characterized in that:
the binding agent is phenolic resin or glucose.
6. The tundish high-alumina working lining dry material according to claim 1, characterized in that:
the sintering agent is one or a mixture of more of red clay, bentonite, boric anhydride, boric acid and borax.
7. The tundish high-alumina working lining dry material according to claim 1, characterized in that:
the modifier is silicon carbide.
8. A tundish high-alumina working lining prepared from the tundish high-alumina working lining dry material claimed in any one of claims 1 to 7.
9. A method for preparing a tundish high alumina working lining as claimed in claim 8, comprising the steps of:
s1, mixing bauxite, corundum, the bonding agent, the sintering agent and the modifier according to the selected mass parts to obtain a tundish high-alumina working lining dry material;
and S2, carrying out dry shaping and baking on the tundish high-alumina working lining obtained in the step S1 to obtain the tundish high-alumina working lining.
10. The method for preparing a tundish high-alumina working lining according to claim 9, wherein the step S2 comprises the following steps:
pouring the tundish high-aluminum dry material between the outer wall of the tundish mold and the tundish permanent lining, starting a vibration motor to vibrate for 5-10min, baking at the temperature of 200-400 ℃ for 1-2h, and demolding to obtain the tundish high-aluminum working lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210990268.9A CN115057693A (en) | 2022-08-18 | 2022-08-18 | Tundish high-aluminum working lining dry material, working lining and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210990268.9A CN115057693A (en) | 2022-08-18 | 2022-08-18 | Tundish high-aluminum working lining dry material, working lining and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115057693A true CN115057693A (en) | 2022-09-16 |
Family
ID=83208136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210990268.9A Pending CN115057693A (en) | 2022-08-18 | 2022-08-18 | Tundish high-aluminum working lining dry material, working lining and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115057693A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000169247A (en) * | 1998-12-01 | 2000-06-20 | Tokyo Yogyo Co Ltd | Induction furnace |
| CN101402527A (en) * | 2008-10-30 | 2009-04-08 | 武汉科技大学 | Compact aluminum silicon carbide composite material and method of manufacturing the same |
| CN103553665A (en) * | 2013-10-23 | 2014-02-05 | 河北赢达工业炉工程材料有限公司 | Corundum amorphous fireproof anti-explosive material capable of realizing quick furnace drying and application method thereof |
| CN105461322A (en) * | 2014-08-21 | 2016-04-06 | 青岛炜烨锻压机械有限公司 | Refractory material for foundry ladle furnace lining, and preparation method thereof |
| CN111253166A (en) * | 2020-03-27 | 2020-06-09 | 江苏嘉耐高温材料股份有限公司 | Al containing reclaimed material2O3-SiC-C brick and preparation method thereof |
-
2022
- 2022-08-18 CN CN202210990268.9A patent/CN115057693A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000169247A (en) * | 1998-12-01 | 2000-06-20 | Tokyo Yogyo Co Ltd | Induction furnace |
| CN101402527A (en) * | 2008-10-30 | 2009-04-08 | 武汉科技大学 | Compact aluminum silicon carbide composite material and method of manufacturing the same |
| CN103553665A (en) * | 2013-10-23 | 2014-02-05 | 河北赢达工业炉工程材料有限公司 | Corundum amorphous fireproof anti-explosive material capable of realizing quick furnace drying and application method thereof |
| CN105461322A (en) * | 2014-08-21 | 2016-04-06 | 青岛炜烨锻压机械有限公司 | Refractory material for foundry ladle furnace lining, and preparation method thereof |
| CN111253166A (en) * | 2020-03-27 | 2020-06-09 | 江苏嘉耐高温材料股份有限公司 | Al containing reclaimed material2O3-SiC-C brick and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102133632B (en) | Continuous-casting comprehensive tundish working liner and production process | |
| CN104003741B (en) | Tundish covering castable and preparation method thereof | |
| CN109879661B (en) | Tundish coating material and preparation method thereof | |
| CN102218514A (en) | Medium and low carbon steel continuous casting mold powder as well as preparation method thereof and continuous casting method | |
| CN110642631B (en) | Ramming material for ladle lining and preparation method thereof | |
| CN106521297B (en) | A kind of method for reducing Form in High Nickel Austenite Nodular Cast Iron turbine case internal flaw | |
| CN113087537B (en) | Steel ladle permanent layer castable containing porous balls | |
| CN115057693A (en) | Tundish high-aluminum working lining dry material, working lining and preparation method thereof | |
| CN101524750B (en) | Preformed piece for plate blank tundish and preparation method thereof | |
| CN113843411B (en) | Low-cost composite dry material working lining for two-flow plate blank continuous casting tundish and construction method | |
| CN111925220A (en) | Environment-friendly tundish dry material, tundish working lining and preparation method thereof | |
| CN111299531B (en) | Process method for improving quality and yield of continuous casting tail billet | |
| CN114874003A (en) | Low-heat-conduction steel ladle permanent layer castable containing calcium hexaluminate | |
| CN112279661B (en) | Light non-stick aluminum material and production method thereof | |
| CN111113638B (en) | Preparation method of low-cost long-service-life slab continuous casting tundish turbulator | |
| CN114573324A (en) | RH vacuum furnace lining refractory material and preparation method thereof | |
| CN113798458B (en) | Continuous casting crystallizer casting powder and preparation method and application thereof | |
| EP3050858B1 (en) | A method for lining metallurgical vessels using self hardening refractory material | |
| CN116041048A (en) | Magnesium aluminum dry material for continuous casting tundish | |
| CN116396063B (en) | 99 castable for resisting copper liquid erosion and peeling in low-oxygen copper rod production | |
| CN116143501B (en) | Mechanical pressing tundish hanging plate and preparation method thereof | |
| CN111331092B (en) | Preparation method of metallurgical exothermic agent for continuous casting tailing blank | |
| CN117735955A (en) | Self-flowing tundish working lining dry material, tundish working lining and preparation method thereof | |
| CN117773039A (en) | 27SiMn series steel grade, preparation method thereof and covering slag | |
| CN115772036A (en) | Crack-reducing magnesium tundish prefabricated part and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220916 |