CN106630976A - Gate valve sliding plate brick for slag retaining of converter and preparation method thereof - Google Patents

Gate valve sliding plate brick for slag retaining of converter and preparation method thereof Download PDF

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Publication number
CN106630976A
CN106630976A CN201610873909.7A CN201610873909A CN106630976A CN 106630976 A CN106630976 A CN 106630976A CN 201610873909 A CN201610873909 A CN 201610873909A CN 106630976 A CN106630976 A CN 106630976A
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Prior art keywords
sliding plate
fine powder
gate valve
percent
fused alumina
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Inventor
彭学峰
李亚伟
郁书中
崔任渠
陈波
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Ruitai Masteel New Material Technology Co ltd
Magang Group Holding Co Ltd
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ANHUI MA STEEL REFRACTORY Co Ltd
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Priority to CN201610873909.7A priority Critical patent/CN106630976A/en
Publication of CN106630976A publication Critical patent/CN106630976A/en
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C04B35/101—Refractories from grain sized mixtures
    • C04B35/106—Refractories from grain sized mixtures containing zirconium oxide or zircon (ZrSiO4)
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/5001—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with carbon or carbonisable materials
    • 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
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • C04B41/85—Coating or impregnation with inorganic materials
    • C04B41/87—Ceramics
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4653—Tapholes; Opening or plugging 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
    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3817—Carbides
    • C04B2235/3821—Boron 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
    • C04B2235/02—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
    • C04B2235/40—Metallic constituents or additives not added as binding phase
    • C04B2235/402—Aluminium
    • 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
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/422—Carbon
    • C04B2235/425—Graphite
    • 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
    • C04B2235/42—Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/428—Silicon
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Metallurgy (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

The invention discloses a gate valve sliding plate brick for slag retaining of a converter and a preparation method thereof. Based on the total amount of 100 percent, the brick comprises the following components in percentage by weight: 20 to 30 percent of tabular corundum particles, 30 to 45 percent of zirconia corundum particles, 5 to 10 percent of tabular corundum fine powder, 5 to 10 percent of zirconia corundum fine powder, 5 to 20 percent of white corundum fine powder, 0 to 5 percent of alpha-Al2O3, 1 to 4 percent of flake graphite, 0 to 2 percent of expanded graphite, 0 to 5 percent of aluminum metal powder, 0 to 5 percent of silicon metal powder, 0 to 3 percent of boron carbide and 4 to 6 percent of additional phenolic resin. According to the gate valve sliding plate brick and the preparation method thereof, the service life of the brick on 100-ton converters is prolonged from original 10 to 12 converters to 13 to 15 converters, and is basically equivalent to that of a zirconia plate embedded gate valve sliding plate; compared with a conventional alumina-zirconia-carbon gate valve sliding plate, a sliding plate for which the brick is used has the advantages that transverse cracking and fracturing phenomena of the sliding plate are remarkably reduced, and the thermal shock resistance is obviously improved, the surface of the plate is smooth, the erosion pore expanding rate is low, the number of continuous using times is increased, and the safety is improved.

Description

A kind of converter slag-resisting gate valve sliding plate brick and preparation method thereof
Technical field
The invention belongs to technical field of refractory materials, more particularly to a kind of converter slag-resisting gate valve sliding plate brick and its preparation side Method.
Background technology
Converter slag-resisting gate valve sliding plate brick is aoxidized due to directly being washed away by high-temperature molten steel with high oxidative atmosphere, Yi Jipin Numerous rapid heat cycle effect, the thermal shock resistance, non-oxidizability and corrosion resistance to refractory material requires extremely harsh.It is domestic at present Outer converter slag-resisting gate valve sliding plate brick material includes that conventional reheating aluminium zirconium carbonaceous and body adopt reheating aluminum-zirconium-carbon slide, mosaic coating Using the composite construction of zirconium material.Service life is 10～12 stoves to conventional reheating aluminium zirconium carbon materials matter in converter more than 100 tons； There is certain amplitude to extend than conventional reheating aluminum-zirconium-carbon slide although inlaying zirconium matter slide plate service life, its complex manufacturing journey Degree is greatly increased, and production cost is doubled, and as the hidden danger that service life elongated strap is come is increased, to operating personnel Harsher requirement is proposed with the personnel of judge.Therefore, the combination property of sliding plate brick, research and development thermal shock resistance of new generation are further improved Energy, resistance to erosion, erosion-resistant efficient converter slag-resisting are significant to clean steel smelting with gate valve sliding plate brick.
There are document and patent report at present, proper amount of expanded graphite is added in Magnesia-carbon material and is remarkably improved the strong of material Degree, thermal shock resistance and corrosion resistance, traditional Magnesia-carbon material, as carbon source, with respect to crystalline flake graphite, is expanded using crystalline flake graphite The aspect ratio and specific surface area of graphite is big, can be with aggregate and matrix former reason bonding, it is easier to be plastically deformed, and It is overlapped mutually in material.Therefore, adding the expanded graphite of appropriate level can increase the intensity and toughness of material, while reducing material Carbon content in material, but it is less for the report that expanded graphite is introduced in aluminum-zirconium-carbon slide brick both at home and abroad.
The content of the invention
In order to overcome the defect of prior art, it is an object of the invention to provide a kind of converter slag-resisting gate valve sliding plate brick, carries High converter gate valve intensity, non-oxidizability and thermal shock resistance, corrosion resistance, extend the use longevity of converter slag-resisting gate valve sliding plate brick Life.
In order to realize above-mentioned goal of the invention, the present invention is employed the following technical solutions：
A kind of converter slag-resisting gate valve sliding plate brick, its composition is by weight percentage：
Plate diamond spar particle 20～30%, fused alumina zirconia particle 30～45%, plate diamond spar fine powder 5～10%, fused alumina zirconia are thin Powder 5～10%, white fused alumina fine powder 5～20%, α-Al2O3Micro mist 0～5%, crystalline flake graphite 1～4%, expanded graphite 0～2%, gold Category aluminium powder 0～5%, metallic silicon power 0～5%, boron carbide 0～3%, percent of total is 100%, additional phenolic resin 4～6%.
Each raw material is as follows with the effect in gate valve sliding plate brick in converter slag-resisting：High-quality plate diamond spar and fused alumina zirconia aggregate are The basic guarantee of high-quality slide plate, plays a supportive role；Corundum class fine powder is the main composition of slide plate matrix；Crystalline flake graphite has preferable Resistance to slag；Rational grain composition is conducive to improving compactness, uniformity and the processability of converter slag-resisting gate valve sliding plate brick；Add Plus the additive such as metallic aluminium powder, metallic silicon power, boron carbide is conducive to increasing the toughness and non-oxidizability of product；Addition expansion stone Ink, by its high reactivity worth the formation of matrix situ ceramic phase is promoted, and significantly optimizes the microstructure of material, and it is certainly The special construction of body and the formation of in-situ ceramic phase strengthen Al2O3-ZrO2-C material jointly, toughness reinforcing.In addition, the graphite of expanded graphite There is substantial amounts of micro-, nano aperture and show high compressibility and flexibility in interlayer, it can inhale in thermal shock cyclic process Receive and discharge the thermal stress of alumina-carbon material, and then improve the thermal shock resistance of material.Expanded graphite-SiC heterojunction structures are in matrix Material forms strong interfaces and combines, and further improves the mechanical property and thermal shock resistance of material, and its structure is kept in the material Relative fullness, suppresses it in hot stage structure alteration, improves material against oxidative and corrosion resistance.
Further, described plate diamond spar particle, its grade includes：6-14 mesh：10～15%, 14-28 mesh：10～ 15%.
Further, described fused alumina zirconia particle, its grade includes：8-14 mesh：10～15%, 14-28 mesh：10～ 20%th, the mesh of ＜ 28：10～15%.
Further, described plate diamond spar fine powder, fused alumina zirconia fine powder, white fused alumina fine powder, its grade is 325 mesh.
Further, described α-Al2O3Micro mist grade is≤5 μm.
Further, the chemical constituent of the plate diamond spar is：Al2O3>=98.5%, pH value is in neutrality；The change of fused alumina zirconia Learning component is：Al2O3+ZrO2>=98% and ZrO2>=23%.
Further, the expansion multiple of the expanded graphite is 150～300 times.
It is a further object of the present invention to provide a kind of preparation method of converter slag-resisting with gate valve sliding plate brick, specially：
Step S1, dispensing
1), prepared according to the weight percent proportioning of following raw material：Plate diamond spar particle 20～30%, fused alumina zirconia particle 30～45%, plate diamond spar fine powder 5～10%, fused alumina zirconia fine powder 5～10%, white fused alumina fine powder 5～20%, α-Al2O3Micro mist 0 ～5%, crystalline flake graphite 1～4%, expanded graphite 0～2%, metallic aluminium powder 0～5%, metallic silicon power 0～5%, boron carbide 0～ 3%；
Step S2, raw material premix
By the plate diamond spar fine powder in raw material, fused alumina zirconia fine powder, white fused alumina fine powder, α-Al2O3Micro mist, crystalline flake graphite, expansion Graphite, metallic aluminium powder, metallic silicon power, boron carbide carry out 40～50min of premix；
Step S3, mixed grind
Particulate material is initially charged in muller according to raw material proportioning, after 1～2 minute, addition accounts for total binding dosage to mixed grind 50～60% bonding agent kneading, is subsequently adding premix fine powder and remaining bonding agent, continues to knead to good shaping pug Can, always the kneading time is 50～70min, and pug granularity has certain without bad phenomenons such as obvious segregation, conglomeration, white material, reunions Mobility；
It is step S3, compressing：Adobe size, overlap, defect, hemp skin, slabbing presentation quality, shaping are controlled on press Job number mark is carried out in adobe afterwards, is piled up neat；
Step S4, heat treatment：Go out drier after being heat-treated 36～48h at 180～250 DEG C；
Step S5, burn till：Enter tunnel cave or shuttle kiln, control 1400～1450 DEG C of temperature, insulation 10h buries carbon and burns till；
Step S6, digestion carbonization：The burned product that step S5 is obtained is placed in asphalt storage, temperature control is 180～200 DEG C, Stress control is lowered the temperature after 1.2～1.8MPa, insulation 5h, then enters the kiln that is carbonized, and carbonization kiln temperature control is at 450 ± 10 DEG C；
Step S7, finishing：To reduce the frictional force between sliding plate brick sliding surface, sliding surface is carried out using surface grinding machine Processing, controls thickness, and flatness reaches regulation requirement.
Step S8, inspection, packaging：Jing after the assay was approved, loads packing case, and carries out mark.
Compared with prior art, the beneficial effect that the present invention can be realized at least includes the following aspects：
1) present invention service life in 100 tons of converters is promoted to 13～15 stoves by original 10～12 stove, service life with Inlay zirconium plate gate valve slide plate substantially suitable；It is existing with tail skid transversal crack and fracture compared with the gate valve slide plate of conventional aluminum zirconium carbon As substantially reducing, thermal shock resistance is significantly improved；It is smooth with rear plate face, corrode reaming little；Repeatedly it is used in conjunction rear strength retention to reach To more than 80%；It is used in conjunction number of times and security is significantly improved.
2) preparation method of the present invention is simple, and easy to control, energy consumption is low, and operating environment cleaning, labor strength is little, product Qualification rate is high, long shelf-life, low cost of manufacture.
Specific embodiment
Firstly, it is necessary to explanation, below will by way of example illustrate converter slag-resisting gate valve slide plate of the present invention Brick and preparation method thereof feature and advantage etc., but all of description is intended merely to what is illustrated, and should not be construed as Any restriction is formed to the present invention.
The embodiment for being just given by this below is come to converter slag-resisting gate valve sliding plate brick of the present invention and preparation method thereof It is illustrative.
Embodiment 1
A kind of converter slag-resisting gate valve sliding plate brick, its composition is by weight percentage：Plate diamond spar particle 25%, fused alumina zirconia Particle 40%, plate diamond spar fine powder 5%, fused alumina zirconia fine powder 5%, white fused alumina fine powder 10%, α-Al2O3Micro mist 2.5%, scale stone Ink 1.8%, expanded graphite 0.7%, metallic aluminium powder 4%, metallic silicon power 4%, boron carbide 2%, additional phenolic resin 5%, its In：
In the present embodiment, the chemical constituent of the plate diamond spar is：Al2O3>=98.5%, pH value is in neutrality；Fused alumina zirconia Chemical constituent be：Al2O3+ZrO2>=98% and ZrO2>=23%.
In the present embodiment, the expansion multiple of the expanded graphite is 150 times.
Embodiment 2
A kind of converter slag-resisting gate valve sliding plate brick, its composition is by weight percentage：Plate diamond spar particle 20%, fused alumina zirconia Particle 45%, plate diamond spar fine powder 3%, fused alumina zirconia fine powder 3%, white fused alumina fine powder 10%, α-Al2O3Micro mist 4%, crystalline flake graphite 1.5%th, expanded graphite 1%, metallic aluminium powder 5%, metallic silicon power 5%, boron carbide 2.5%, additional phenolic resin 5%, wherein：
In the present embodiment, the chemical constituent of the plate diamond spar is：Al2O3>=98.5%, pH value is in neutrality；Fused alumina zirconia Chemical constituent be：Al2O3+ZrO2>=98% and ZrO2>=23%.
In the present embodiment, the expansion multiple of the expanded graphite is 200 times.
Embodiment 3
A kind of converter slag-resisting gate valve sliding plate brick, its composition is by weight percentage：Plate diamond spar particle 30%, fused alumina zirconia Particle 30%, plate diamond spar fine powder 6%, fused alumina zirconia fine powder 6%, white fused alumina fine powder 10%, α-Al2O3Micro mist 4%, crystalline flake graphite 1%th, expanded graphite 1.5%, metallic aluminium powder 4.5%, metallic silicon power 4.5%, boron carbide 2.5%, additional phenolic resin 5%, its In：
In the present embodiment, the chemical constituent of the plate diamond spar is：Al2O3>=98.5%, pH value is in neutrality；Fused alumina zirconia Chemical constituent be：Al2O3+ZrO2>=98% and ZrO2>=23%.
In the present embodiment, the expansion multiple of the expanded graphite is 300 times.
Embodiment 4
The present invention provides a kind of preparation method of converter slag-resisting gate valve sliding plate brick, specially：
Step S1, dispensing
1), prepared according to the weight percent proportioning of following raw material：Plate diamond spar particle 20～30%, fused alumina zirconia particle 30～45%, plate diamond spar fine powder 5～10%, fused alumina zirconia fine powder 5～10%, white fused alumina fine powder 5～20%, α-Al2O3Micro mist 0 ～5%, crystalline flake graphite 1～4%, expanded graphite 0～2%, metallic aluminium powder 0～5%, metallic silicon power 0～5%, boron carbide 0～ 3%；
Step S2, raw material premix
By the plate diamond spar fine powder in raw material, fused alumina zirconia fine powder, white fused alumina fine powder, α-Al2O3Micro mist, crystalline flake graphite, expansion Graphite, metallic aluminium powder, metallic silicon power, boron carbide carry out 40～50min of premix；
Step S3, mixed grind
Particulate material is initially charged in muller according to raw material proportioning, after 1～2 minute, addition accounts for total binding dosage to mixed grind 50～60% bonding agent kneading, is subsequently adding premix fine powder and remaining bonding agent, continues to knead to good shaping pug Can, always the kneading time is 50～70min, and pug granularity has certain without bad phenomenons such as obvious segregation, conglomeration, white material, reunions Mobility；
It is step S3, compressing：Adobe size, overlap, defect, hemp skin, slabbing presentation quality, shaping are controlled on press Job number mark is carried out in adobe afterwards, is piled up neat；
Step S4, heat treatment：Go out drier after being heat-treated 36～48h at 180～250 DEG C；
Step S5, burn till：Enter tunnel cave or shuttle kiln, control 1400～1450 DEG C of temperature, insulation 10h buries carbon and burns till；
Step S6, digestion carbonization：The burned product that step S5 is obtained is placed in asphalt storage, temperature control is 180～200 DEG C, Stress control is lowered the temperature after 1.2～1.8MPa, insulation 5h, then enters the kiln that is carbonized, and carbonization kiln temperature control is at 450 ± 10 DEG C；
Step S7, finishing：To reduce the frictional force between sliding plate brick sliding surface, sliding surface is carried out using surface grinding machine Processing, controls thickness, and flatness reaches regulation requirement.
Step S8, inspection, packaging：Jing after the assay was approved, loads packing case, and carries out mark.
Below only by way of example come elaborate converter slag-resisting gate valve sliding plate brick of the present invention and preparation method thereof these Individual example is only used for the principle and embodiments thereof of the explanation present invention, rather than limitation of the present invention, without departing from the present invention's In the case of spirit and scope, those skilled in the art can also make various modifications and improvement.Therefore, the technology of all equivalents Scheme all should belong to scope of the invention and the every claim by the present invention is limited.

Claims (10)

1. a kind of converter slag-resisting gate valve sliding plate brick, it is characterised in that its composition is by weight percentage：Plate diamond spar particle 20 ～30%, fused alumina zirconia particle 30～45%, plate diamond spar fine powder 5～10%, fused alumina zirconia fine powder 5～10%, white fused alumina fine powder 5～ 20%th, α-Al2O3Micro mist 0～5%, crystalline flake graphite 1～4%, expanded graphite 0～2%, metallic aluminium powder 0～5%, metallic silicon power 0 ～5%, boron carbide 0～3%, percent of total is 100%, additional phenolic resin 4～6%.
2. converter slag-resisting according to claim 1 gate valve sliding plate brick, it is characterised in that described plate diamond spar particle, Its grade includes：6-14 mesh：10～15%, 14-28 mesh：10～15%.
3. converter slag-resisting according to claim 1 gate valve sliding plate brick, it is characterised in that described fused alumina zirconia particle, its Grade includes：8-14 mesh：10～15%, 14-28 mesh：10～20%, the mesh of ＜ 28：10～15%.
4. converter slag-resisting according to claim 1 gate valve sliding plate brick, it is characterised in that described plate diamond spar fine powder, Fused alumina zirconia fine powder, white fused alumina fine powder, its grade is 325 mesh.
5. converter slag-resisting according to claim 1 gate valve sliding plate brick, it is characterised in that described α-Al2O3Micro mist grade For≤5 μm.
6. converter slag-resisting according to claim 1 gate valve sliding plate brick, it is characterised in that the chemical group of the plate diamond spar It is divided into：Al2O3>=98.5%, pH value is in neutrality；The chemical constituent of fused alumina zirconia is：Al2O3+ZrO2>=98% and ZrO2>=23%.
7. converter slag-resisting according to claim 1 gate valve sliding plate brick, it is characterised in that the expansion of the expanded graphite times Number is 150～300 times.
8. a kind of converter slag-resisting preparation method of gate valve sliding plate brick, it is characterised in that specially：
Step S1, dispensing
1), prepared according to the weight percent proportioning of following raw material：Plate diamond spar particle 20～30%, fused alumina zirconia particle 30～ 45%th, plate diamond spar fine powder 5～10%, fused alumina zirconia fine powder 5～10%, white fused alumina fine powder 5～20%, α-Al2O3Micro mist 0～ 5%th, crystalline flake graphite 1～4%, expanded graphite 0～2%, metallic aluminium powder 0～5%, metallic silicon power 0～5%, boron carbide 0～3%；
Step S2, raw material premix
By the plate diamond spar fine powder in raw material, fused alumina zirconia fine powder, white fused alumina fine powder, α-Al2O3Micro mist, crystalline flake graphite, expansion stone Ink, metallic aluminium powder, metallic silicon power, boron carbide carry out 40～50min of premix；
Step S3, mixed grind
Particulate material is initially charged in muller according to raw material proportioning, mixed grind is after 1～2 minute, addition account for total binding dosage 50～ 60% bonding agent is kneaded, and is subsequently adding and is premixed fine powder and remaining bonding agent, continuation kneading to good shaping pug performance, always The kneading time is 50～70min, and pug granularity has certain stream without bad phenomenons such as obvious segregation, conglomeration, white material, reunions Dynamic property；
It is step S3, compressing：Adobe size, overlap, defect, hemp skin, slabbing presentation quality, brick after shaping are controlled on press Base carries out job number mark, piles up neat；
Step S4, heat treatment：Go out drier after being heat-treated 36～48h at 180～250 DEG C；
Step S5, burn till：Enter tunnel cave or shuttle kiln, control 1400～1450 DEG C of temperature, insulation 10h buries carbon and burns till；
Step S6, digestion carbonization：The burned product that step S5 is obtained is placed in asphalt storage, temperature control at 180～200 DEG C, Stress control is lowered the temperature after 1.2～1.8MPa, insulation 5h, then enters the kiln that is carbonized, and carbonization kiln temperature control is at 450 ± 10 DEG C；
Step S7, finishing：To reduce the frictional force between sliding plate brick sliding surface, sliding surface is carried out using surface grinding machine to add Work, controls thickness, and flatness reaches regulation requirement.
Step S8, inspection, packaging：Jing after the assay was approved, loads packing case, and carries out mark.
9. the converter slag-resisting according to claim 8 preparation method of gate valve sliding plate brick, it is characterised in that described tabular Corundum in granules, its grade includes：6-14 mesh：10～15%, 14-28 mesh：10～15%.
10. the converter slag-resisting according to claim 8 preparation method of gate valve sliding plate brick, it is characterised in that described zirconium Corundum in granules, its grade includes：8-14 mesh：10～15%, 14-28 mesh：10～20%, the mesh of ＜ 28：10～15%.
CN201610873909.7A 2016-09-30 2016-09-30 Gate valve sliding plate brick for slag retaining of converter and preparation method thereof Pending CN106630976A (en)

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CN107602099A (en) * 2017-09-22 2018-01-19 马鞍山利尔开元新材料有限公司 A kind of low carbon sliding plate brick of converter slag-resisting containing modified graphite and preparation method thereof
CN107903075A (en) * 2017-11-13 2018-04-13 安徽马钢耐火材料有限公司 The preparation method of steel ladle air brick
CN108484138A (en) * 2018-05-23 2018-09-04 瑞泰马钢新材料科技有限公司 A kind of sliding plate brick and preparation method thereof adding composite alumina micro mist and carbon source
CN110436941A (en) * 2019-09-06 2019-11-12 华北理工大学 A kind of method of modifying of zirconium modification expanded graphite
CN111410519A (en) * 2020-04-24 2020-07-14 河南熔金高温材料股份有限公司 Aluminum titanate-added Al2O3-C sliding brick and production method thereof
CN112456986A (en) * 2020-12-11 2021-03-09 马鞍山利尔开元新材料有限公司 Long-life ladle upper nozzle brick for calcium-treated steel and preparation method thereof
CN112778003A (en) * 2021-01-07 2021-05-11 瑞泰马钢新材料科技有限公司 Manufacturing method of aluminum-zirconium-carbon light-fired converter gate valve
CN113173781A (en) * 2021-03-09 2021-07-27 广州市白云区石井特种耐火材料厂 Refractory material and preparation method and application thereof
CN113998989A (en) * 2021-11-01 2022-02-01 河南工业大学 High-wear-resistance sintered Al2O3-ZrO2-C sliding plate brick and preparation method thereof
CN115894037A (en) * 2022-11-21 2023-04-04 洛阳亿特立新材料科技有限公司 Al4SiC4 combined silicon carbide porous ceramic and preparation method thereof
CN115947591A (en) * 2022-08-15 2023-04-11 河北国亮新材料股份有限公司 Medium-temperature sintered metal-bonded aluminum-zirconium-carbon sliding plate brick with high carbon content and preparation method thereof
CN117303924A (en) * 2023-11-29 2023-12-29 河北国亮新材料股份有限公司 Long-service-life sliding plate brick and preparation method thereof

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Publication number Priority date Publication date Assignee Title
CN107602099A (en) * 2017-09-22 2018-01-19 马鞍山利尔开元新材料有限公司 A kind of low carbon sliding plate brick of converter slag-resisting containing modified graphite and preparation method thereof
CN107903075A (en) * 2017-11-13 2018-04-13 安徽马钢耐火材料有限公司 The preparation method of steel ladle air brick
CN107903075B (en) * 2017-11-13 2021-01-22 瑞泰马钢新材料科技有限公司 Production and preparation method of air-permeable sliding plate brick for ladle
CN108484138A (en) * 2018-05-23 2018-09-04 瑞泰马钢新材料科技有限公司 A kind of sliding plate brick and preparation method thereof adding composite alumina micro mist and carbon source
CN110436941A (en) * 2019-09-06 2019-11-12 华北理工大学 A kind of method of modifying of zirconium modification expanded graphite
CN111410519A (en) * 2020-04-24 2020-07-14 河南熔金高温材料股份有限公司 Aluminum titanate-added Al2O3-C sliding brick and production method thereof
CN112456986B (en) * 2020-12-11 2022-12-27 马鞍山利尔开元新材料有限公司 Long-life ladle upper nozzle brick for calcium-treated steel and preparation method thereof
CN112456986A (en) * 2020-12-11 2021-03-09 马鞍山利尔开元新材料有限公司 Long-life ladle upper nozzle brick for calcium-treated steel and preparation method thereof
CN112778003A (en) * 2021-01-07 2021-05-11 瑞泰马钢新材料科技有限公司 Manufacturing method of aluminum-zirconium-carbon light-fired converter gate valve
CN113173781A (en) * 2021-03-09 2021-07-27 广州市白云区石井特种耐火材料厂 Refractory material and preparation method and application thereof
CN113998989A (en) * 2021-11-01 2022-02-01 河南工业大学 High-wear-resistance sintered Al2O3-ZrO2-C sliding plate brick and preparation method thereof
CN115947591A (en) * 2022-08-15 2023-04-11 河北国亮新材料股份有限公司 Medium-temperature sintered metal-bonded aluminum-zirconium-carbon sliding plate brick with high carbon content and preparation method thereof
CN115894037A (en) * 2022-11-21 2023-04-04 洛阳亿特立新材料科技有限公司 Al4SiC4 combined silicon carbide porous ceramic and preparation method thereof
CN115894037B (en) * 2022-11-21 2024-02-06 洛阳亿特立新材料科技有限公司 Al (aluminum) alloy 4 SiC 4 Porous ceramic combined with silicon carbide and preparation method thereof
CN117303924A (en) * 2023-11-29 2023-12-29 河北国亮新材料股份有限公司 Long-service-life sliding plate brick and preparation method thereof
CN117303924B (en) * 2023-11-29 2024-01-23 河北国亮新材料股份有限公司 Long-service-life sliding plate brick and preparation method thereof

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