CN110156462A - The smelting stainless steel submersed nozzle and its production method of resistant to corrosion long-life - Google Patents

The smelting stainless steel submersed nozzle and its production method of resistant to corrosion long-life Download PDF

Info

Publication number
CN110156462A
CN110156462A CN201910470818.2A CN201910470818A CN110156462A CN 110156462 A CN110156462 A CN 110156462A CN 201910470818 A CN201910470818 A CN 201910470818A CN 110156462 A CN110156462 A CN 110156462A
Authority
CN
China
Prior art keywords
parts
mesh
powder
baddeleyite
submersed nozzle
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
Application number
CN201910470818.2A
Other languages
Chinese (zh)
Inventor
李涛
孙逊
张程
徐福余
李志义
吴比
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ANSHAN HE FENG REFRACTORY MATERIAL Co Ltd
Original Assignee
ANSHAN HE FENG REFRACTORY MATERIAL Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ANSHAN HE FENG REFRACTORY MATERIAL Co Ltd filed Critical ANSHAN HE FENG REFRACTORY MATERIAL Co Ltd
Priority to CN201910470818.2A priority Critical patent/CN110156462A/en
Publication of CN110156462A publication Critical patent/CN110156462A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B22D41/50—Pouring-nozzles
    • B22D41/52—Manufacturing or repairing thereof
    • B22D41/54—Manufacturing or repairing thereof characterised by the materials used therefor
    • 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
    • C04B35/48—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 zirconium or hafnium oxides, zirconates, zircon or hafnates
    • C04B35/481—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 zirconium or hafnium oxides, zirconates, zircon or hafnates containing silicon, e.g. zircon
    • 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
    • C04B35/48—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 zirconium or hafnium oxides, zirconates, zircon or hafnates
    • C04B35/482—Refractories from grain sized mixtures
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—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
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3208—Calcium oxide or oxide-forming salts thereof, e.g. lime
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/38—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
    • C04B2235/38—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
    • C04B2235/02—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
    • C04B2235/70—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
    • C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
    • C04B2235/9676—Resistance against chemicals, e.g. against molten glass or molten salts against molten metals such as steel or aluminium

Abstract

A kind of submersed nozzle and its production method of resistant to corrosion long-life, slag lining material include: stable calcium oxide zirconium oxide or 20~30 parts of 20~30 parts of 40 mesh of baddeleyite, stable calcium oxide zirconium oxide or 100 mesh of baddeleyite, stable calcium oxide zirconium oxide or 25~35 parts of 325 mesh of baddeleyite, 5~15 parts of crystalline flake graphite, 0~5 part of SiC powder, 0.5~5 part of metal Si powder, B in parts by weight40~3 part of C powder, 2~6 parts of 180 mesh of calcium hexaluminate, 4~8 parts of liquid resin, 0~2 part of hard resin powder.The present invention introduces extrusion granulation technique by the processing compound of the optimization resistance to material of submersed nozzle slag lining, improves the anti-corrosion-resistant property of high temperature of the resistance to material of submersed nozzle slag lining；Delay the infiltration of submersed nozzle slag lining, corrode and the melting loss that goes bad, the generation to fall off, improves submersed nozzle service life.

Description

The smelting stainless steel submersed nozzle and its production method of resistant to corrosion long-life
Technical field
The functional refractory material of clean steel is smelted the present invention relates to steel mill tundish more particularly to a kind of smelting is stainless The steel submersed nozzle and its production method of resistant to corrosion long-life.
Background technique
Submersed nozzle is the device for entering crystallizer for protecting and controlling molten steel from intermediate packet stream, submersed nozzle in addition to While being provided safeguard for stable steel stream, also there is isolation atmosphere to prevent secondary oxidation of steel and prevent the work of molten steel cooling With.It is epochmaking functional refractory material.See Fig. 1.
Therefore, submersed nozzle, internal layer refractory material will resist washing away, corroding it for tundish outflow high-temperature molten steel Outside, outer refractory slag lining will be by various basicity, the erosion of the continuous casting covering slag of composition and steel slag, and outer layer is resistance to Fiery material tapping hole position should be washed away and be impacted by flow at high speed molten steel, in addition, due to the continuous vibration of crystallizer, band Dynamic molten steel causes mechanical shock incessantly to soaking water gap.
Currently used for the long damage situation for pouring time soaking water gap of the fine work steel tundish such as smelting stainless steel, mainly lack It falls into, mainly slag lining anti-erosion, spalling resistance cannot be met the requirements, and melt that damage digit rate is too fast, be unable to satisfy the long need poured time It wants, during pouring molten steel, if submersed nozzle slag lining corrodes seriously, residual thickness is excessively thin, easily snaps off, can not MOLTEN STEEL FLOW is controlled, will cause big production accident.
Summary of the invention
The purpose of the present invention is to provide the smelting stainless steel submersed nozzle and its production method of resistant to corrosion long-life, By optimizing the processing compound of the resistance to material of submersed nozzle slag lining, while extrusion granulation technique is introduced in production technology, change The anti-corrosion-resistant property of high temperature of the kind resistance to material of submersed nozzle slag lining；The stomata of the resistance to material of mouth of a river slag lining is closed, steel is prevented Water and steel slag to infiltration inside resistance to material, corrode, delay the resistance to material of submersed nozzle slag lining because molten steel and steel slag are to inside resistance to material Infiltration is corroded and the melting loss that goes bad, the generation to fall off, so that the high temperature for substantially improving the resistance to material of submersed nozzle slag lining resists resistance to invade Corrosion energy, it is final to improve submersed nozzle service life.
In order to achieve the above object, the present invention is implemented with the following technical solutions:
The smelting stainless steel submersed nozzle of resistant to corrosion long-life, slag lining material includes: oxygen in parts by weight Change calcia-stabilised zirconia and/or 20~30 parts of 20~30 parts of 40 mesh of baddeleyite, stable calcium oxide zirconium oxide and/or 100 mesh of baddeleyite, Stable calcium oxide zirconium oxide and/or 25~35 parts of 325 mesh of baddeleyite, 5~15 parts of crystalline flake graphite, 0~5 part of SiC powder, metal Si powder 0.5~5 part, B40~3 part of C powder, 2~6 parts of 180 mesh of calcium hexaluminate, 4~8 parts of liquid resin, 0~2 part of hard resin powder.
The crystalline flake graphite is positive 598 crystalline flake graphites.
The production method of the smelting stainless steel submersed nozzle of resistant to corrosion long-life, the producer of slag lining pug Method includes the following steps:
1) weighing ingredient is carried out by material composition, granularity, weight ratio, tolerance is closed spare less than 0.02 kilogram；
2) by stable calcium oxide zirconium oxide and/or 5~10 parts of 325 mesh of baddeleyite, 0~5 part of SiC powder, metal Si powder 0.5~5 Part, B40~3 part of C powder, 2~6 parts of 180 mesh of calcium hexaluminate, 0~2 part of hard resin powder are premixed with 0.5L double helix taper in advance It is device mixing 15-30 minutes, stand-by as premixing flour；
3) by stable calcium oxide zirconium oxide and/or 20~30 parts of 40 mesh of baddeleyite, stable calcium oxide zirconium oxide and/or baddeleyite 100 20~30 parts of mesh match the remaining stable calcium oxide zirconium oxide of premixing flour and/or 325 mesh of baddeleyite, put into adjustable speed mixing In pelletizer, one time mixed at high speed 2-6 minutes, 5~15 parts of crystalline flake graphite, and whole premixing flours, secondary high speed is then added Mixing 2-6 minutes, being eventually adding liquid resin is 4~8 parts, mixed at high speed 2-10 minutes three times, is finally discharged；
4) mixed pug enters kneader and squeezes 20-30 minutes, loose pug is squeezed into fine and close bulk Block material is put into hammer mill again later by material, and broken pug is sieved by 0.6mm vibrating screen, and oversize is again Broken, minus mesh goes successively to drying machine or dryer, while stirring heating, drying, and drying temperature is 50-65 DEG C, 20-30 points Clock；
5) 1000-2000 kilograms of pug makes difference in molding before use, mixing 15-30 minutes in dedicated mixed machine The time pug of production is uniform and stable；
6) mixed pug is placed 12-36 hours under fixed temperature, humidity, i.e., plastic production.
Compared with prior art, the beneficial effects of the present invention are:
1) extrusion granulation technique is introduced, the pug secondary treatment that kneading machine is come out, extrusion granulation, crushing and screening pass through The pug porosity of processing is low, abnormal compact, slag lining zirconium carbonaceous pug after molding, and bulk density improves 10%-15%, Innovatively improve the anti-corrosion-resistant property of high temperature of the resistance to material of submersed nozzle slag lining；
2) former zirconium oxide-carbon materials matter of soaking water gap slag lining is optimized, introduces 2~6 parts of calcium hexaluminates, utilized The characteristic that can be improved viscosity coefficient of dross when its high temperature makes the neoteric resistance to material of submersed nozzle slag lining in applied at elevated temperature, Surface covers one layer of high viscosity liquid phase slag, closes the stomata of the resistance to material of mouth of a river slag lining, prevents in molten steel and the resistance to material of steel slag line Portion's infiltration is corroded, delay the resistance to material of submersed nozzle slag lining because molten steel and steel slag to infiltration inside resistance to material, corrode due to go bad and melt The generation damage, to fall off；
3) present invention greatly improved the anti-corrosion-resistant property of high temperature of the resistance to material of submersed nozzle slag lining, final to improve Submersed nozzle service life meets the fine work steel tundish such as steel mill's user's smelting stainless steel, ultra-low-carbon steel length and pours time production Needs.
The submersed nozzle of resistant to corrosion long-life of the invention, slag lining bulk density improve 10%-15%, use Service life is obviously improved.By taking certain steel mill makes steel two subsidiary factory's hot rolling conticaster submersed nozzle of head factory as an example, slag lining volume Density is from 3.98g/cm3It is increased to 4.40g/cm3, it is poured using the time from 8 hours before, is increased to 10 hours or more, meets The fine work steel tundish such as steel mill's user's smelting stainless steel, ultra-low-carbon steel is long to pour time needs of production.
Detailed description of the invention
Fig. 1 is the working state schematic representation of submersed nozzle.
Fig. 2 is production technological process of the invention.
In figure: 1- long nozzle, 2- stopper, packet gas-permeable nozzle, 4- submersed nozzle in 3-.
Specific embodiment
Specific embodiments of the present invention will be further explained below:
The smelting stainless steel submersed nozzle of resistant to corrosion long-life, slag lining material includes: oxygen in parts by weight Change calcia-stabilised zirconia and/or 20~30 parts of 20~30 parts of 40 mesh of baddeleyite, stable calcium oxide zirconium oxide and/or 100 mesh of baddeleyite, Stable calcium oxide zirconium oxide and/or 25~35 parts of 325 mesh of baddeleyite, 5~15 parts of crystalline flake graphite, 0~5 part of SiC powder, metal Si powder 0.5~5 part, B40~3 part of C powder, 2~6 parts of 180 mesh of calcium hexaluminate, 4~8 parts of liquid resin, 0~2 part of hard resin powder.
The crystalline flake graphite is positive 598 crystalline flake graphites, and graphite particle size is the sieve of 500 mesh or more, and carbon content is greater than 98%.
The production method of the smelting stainless steel submersed nozzle of resistant to corrosion long-life, the producer of slag lining pug Method includes the following steps:
1) weighing ingredient is carried out by material composition, granularity, weight ratio, tolerance is closed spare less than 0.02 kilogram；
2) by stable calcium oxide zirconium oxide and/or 5~10 parts of 325 mesh of baddeleyite, 0~5 part of SiC powder, metal Si powder 0.5~5 Part, B40~3 part of C powder, 2~6 parts of 180 mesh of calcium hexaluminate, 0~2 part of hard resin powder are premixed with 0.5L double helix taper in advance It is device mixing 15-30 minutes, stand-by as premixing flour；
3) by stable calcium oxide zirconium oxide and/or 20~30 parts of 40 mesh of baddeleyite, stable calcium oxide zirconium oxide and/or baddeleyite 100 20~30 parts of mesh match the remaining stable calcium oxide zirconium oxide of premixing flour and/or 325 mesh of baddeleyite, put into adjustable speed mixing In pelletizer, one time mixed at high speed 2-6 minutes, 5~15 parts of positive 598 crystalline flake graphite, and whole premixing flours is then added, it is secondary Mixed at high speed 2-6 minutes, being eventually adding liquid resin was 4~8 parts, mixed at high speed 2-10 minutes three times, during which can be according to pug Effect changes high, medium and low revolving speed mixing, finally discharges；
4) mixed pug enters kneader and squeezes 20-30 minutes, by distinctive extrusion structure, by loose mud Material is squeezed into fine and close block material, block material is put into hammer mill again later, broken pug has to pass through 0.6mm Vibrating screen screening, oversize are crushed again, and minus mesh goes successively to drying machine or dryer, while stirring heating, drying, drying Temperature is 50-65 DEG C, and 20-30 minutes, fugitive constituent detection is qualified to discharge；
5) it is uniform and stable, 1000-2000 kilograms of the pug for guaranteeing different pug compositions, fugitive constituent, is used in molding Before, it also to be mixed 15-30 minutes in dedicated mixed machine, the pug for producing different time is uniform and stable；
6) mixed pug is placed 12-36 hours under fixed temperature, humidity, i.e., plastic production.
Embodiment:
Guangzhou steel mill started building on 2 17th, 2003, consistent for the steel-making of South China's first hand, hot rolling, cold rolling Operation Stainless Steel Plant and maximum professional stainless steel production base.Various types of stainless steel is produced per year up to million tons, product includes band steel Embryo, steel plate, coils of hot-rolled steel and cold-rolled steel coils, especially band steel embryo conticaster, used various trade mark stainless steel smelting requirements Tundish immersed nozzle will be increased to 12 tanks time or more from original 8-9 tank.Early period, other producers carried out test successively, Mostly it is slag lining not resistance to erosion, steel mill's requirement is not achieved.
The present invention passes through the material prescription and its production method of following embodiment, to band steel embryo continuous casting tundish immersion The mouth of a river is transformed, and is effectively improved submersed nozzle slag lining slag-resistant permeability, it is final improve slag lining to slag Corrosion resistance.
Embodiment 1:
Various raw materials are by weight ratio: 40 mesh of stable calcium oxide zirconium oxide is 26 parts, 100 mesh of stable calcium oxide zirconium oxide For 28 parts, 20 parts of 325 mesh of stable calcium oxide zirconium oxide, 325 mesh of baddeleyite is 10 parts, positive 598 crystalline flake graphite is 8 parts, 98SiC powder 1 part, metal Si powder be 3 parts, B4C powder is 1 part, 3 parts of 180 mesh of calcium hexaluminate, liquid resin are 8 parts, 1 part of hard resin powder.
The production method of the submersed nozzle of resistant to corrosion long-life, the production method of slag lining pug include following step It is rapid:
1) weighing ingredient is carried out by material composition, granularity, weight ratio, tolerance is closed spare less than 0.02 kilogram；
2) by 10 parts of 325 mesh of baddeleyite, 98SiC powder, metal Si powder, B4C powder, 180 mesh of calcium hexaluminate, hard resin powder, It is mixed 20 minutes with 0.5L double helix taper premixed device in advance, it is stand-by as premixing flour；
3) by 40 mesh of stable calcium oxide zirconium oxide, 100 mesh of stable calcium oxide zirconium oxide, 325 mesh of stable calcium oxide zirconium oxide It 20 parts, puts into adjustable speed mixed granulation machine, one time mixed at high speed 3 minutes, positive 598 crystalline flake graphite, Yi Jiquan is then added Portion's premixing flour, secondary mixed at high speed 6 minutes, is eventually adding liquid resin, three times mixed at high speed 8 minutes, during which can be according to pug Effect changes high, medium and low revolving speed mixing, finally discharges；
4) mixed pug enters kneader and squeezes 26-28 minutes, by distinctive extrusion structure, by loose mud Material is squeezed into fine and close block material, block material is put into hammer mill again later, broken pug has to pass through 0.6mm Vibrating screen screening, oversize are crushed again, and minus mesh goes successively to drying machine or dryer, while stirring heating, drying, drying Temperature is 55-60 DEG C, and 20-22 minutes, fugitive constituent detection is qualified to discharge；
It 5) is uniform and stable, 1000 kilograms of the pug for guaranteeing different pug compositions, fugitive constituent, in molding before use, also It to be mixed 20-22 minutes in dedicated mixed machine, the pug for producing different time is uniform and stable；
6) mixed pug is placed 12-36 hours under fixed temperature, humidity, i.e., plastic production.
Embodiment 2:
Various raw materials are by weight ratio: 40 mesh of stable calcium oxide zirconium oxide is 28 parts, 100 mesh of stable calcium oxide zirconium oxide For 26 parts, 325 mesh of stable calcium oxide zirconium oxide be 34 parts, positive 598 crystalline flake graphite is 10 parts, 3 parts of 98SiC powder, metal Si powder are 2 Part, B4C powder is 2 parts, 5 parts of 180 mesh of calcium hexaluminate, liquid resin are 6 parts, 1.5 parts of hard resin powder.
The production method of the submersed nozzle of resistant to corrosion long-life: wherein 7 parts of 325 mesh of stable calcium oxide zirconium oxide, 98SiC Powder, metal Si powder, B4C powder, 180 mesh of calcium hexaluminate, hard resin powder are as premixing flour, other to mix as major ingredient, remaining side Method is the same as embodiment 1.
Embodiment 3:
Various raw materials are by weight ratio: stable calcium oxide zirconium oxide or 40 mesh of baddeleyite are 22 parts, stable calcium oxide oxygen Changing 100 mesh of zirconium is 14 parts, and 100 mesh of baddeleyite is 8 parts, 325 mesh of stable calcium oxide zirconium oxide is 8 parts, and 325 mesh of baddeleyite is 18 Part, positive 598 crystalline flake graphite are 13 parts, 4 parts of 98SiC powder, metal Si powder are 4 parts, B4C powder is 2.5 parts, 180 mesh 4 of calcium hexaluminate Part, liquid resin are 5 parts, 0.5 part of hard resin powder.
The production method of the submersed nozzle of resistant to corrosion long-life: wherein 18 parts of 325 mesh of baddeleyite, 98SiC powder, metal Si Powder, B4C powder, 180 mesh of calcium hexaluminate, hard resin powder are as premixing flour, and other to mix as major ingredient, remaining method is same
Embodiment 1.
The embodiment of the present invention is in certain 1450 casting machine of rigid factory's steel-making portion, using 60,12.18 tank of average life, much Higher than original 8-9 tank, meets the fine work steel tundish such as steel mill's user's smelting stainless steel, ultra-low-carbon steel length and pour time production It needs.

Claims (3)

1. the smelting stainless steel submersed nozzle of resistant to corrosion long-life, which is characterized in that its slag lining material is by weight Number includes: stable calcium oxide zirconium oxide and/or 20~30 parts of 40 mesh of baddeleyite, 100 mesh of stable calcium oxide zirconium oxide and/or baddeleyite 25~35 parts of 20~30 parts, stable calcium oxide zirconium oxide and/or 325 mesh of baddeleyite, 5~15 parts of crystalline flake graphite, 0~5 part of SiC powder, 0.5~5 part of metal Si powder, B40~3 part of C powder, 2~6 parts of 180 mesh of calcium hexaluminate, 4~8 parts of liquid resin, hard resin powder 0~ 2 parts.
2. the smelting stainless steel according to claim 1 submersed nozzle of resistant to corrosion long-life, which is characterized in that described Crystalline flake graphite is positive 598 crystalline flake graphites.
3. the smelting stainless steel as described in claim 1 production method of the submersed nozzle of resistant to corrosion long-life, feature It is, the production method of slag lining pug includes the following steps:
1) weighing ingredient is carried out by material composition, granularity, weight ratio, tolerance is closed spare less than 0.02 kilogram；
2) by 5~10 parts of stable calcium oxide zirconium oxide and/or 325 mesh of baddeleyite, 0~5 part of SiC powder, 0.5~5 part of metal Si powder, B40~3 part of C powder, 2~6 parts of 180 mesh of calcium hexaluminate, 0~2 part of hard resin powder, it is mixed with 0.5L double helix taper premixed device in advance It closes 15-30 minutes, it is stand-by as premixing flour；
3) by stable calcium oxide zirconium oxide and/or 20~30 parts of 40 mesh of baddeleyite, stable calcium oxide zirconium oxide and/or baddeleyite 100 20~30 parts of mesh, matches the remaining stable calcium oxide zirconium oxide of premixing flour and/or 325 mesh of baddeleyite, put into adjustable speed mixing granulation In machine, one time mixed at high speed 2-6 minutes, 5~15 parts of crystalline flake graphite, and whole premixing flours, secondary mixed at high speed is then added 2-6 minutes, being eventually adding liquid resin was 4~8 parts, mixed at high speed 2-10 minutes three times, was finally discharged；
4) mixed pug enters kneader and squeezes 20-30 minutes, loose pug is squeezed into fine and close block material, it Block material is put into hammer mill again afterwards, broken pug is sieved by 0.6mm vibrating screen, and oversize is crushed again, Minus mesh goes successively to drying machine or dryer, while stirring heating, drying, and drying temperature is 50-65 DEG C, 20-30 minutes；
5) 1000-2000 kilograms of pug makes different time in molding before use, mixing 15-30 minutes in dedicated mixed machine The pug of production is uniform and stable；
6) mixed pug is placed 12-36 hours under fixed temperature, humidity, i.e., plastic production.
CN201910470818.2A 2019-05-31 2019-05-31 The smelting stainless steel submersed nozzle and its production method of resistant to corrosion long-life Pending CN110156462A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910470818.2A CN110156462A (en) 2019-05-31 2019-05-31 The smelting stainless steel submersed nozzle and its production method of resistant to corrosion long-life

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910470818.2A CN110156462A (en) 2019-05-31 2019-05-31 The smelting stainless steel submersed nozzle and its production method of resistant to corrosion long-life

Publications (1)

Publication Number Publication Date
CN110156462A true CN110156462A (en) 2019-08-23

Family

ID=67630921

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910470818.2A Pending CN110156462A (en) 2019-05-31 2019-05-31 The smelting stainless steel submersed nozzle and its production method of resistant to corrosion long-life

Country Status (1)

Country Link
CN (1) CN110156462A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113307625A (en) * 2021-05-28 2021-08-27 郑州大学 ZrO (ZrO)2-C fiber composite material and preparation method thereof
CN113560559A (en) * 2021-09-27 2021-10-29 北京利尔高温材料股份有限公司 Preparation method of long-life submerged nozzle and long-life submerged nozzle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1176236A (en) * 1997-02-27 1998-03-18 宝山钢铁(集团)公司 Production method of refractory material for immersed sprue
WO2010127810A1 (en) * 2009-05-07 2010-11-11 Refractory Intellectual Property Gmbh & Co. Kg Moulded product consisting of a fire-proof ceramic material
CN102603334A (en) * 2012-03-26 2012-07-25 武汉科技大学 Submersed nozzle and preparation method thereof
CN107617732A (en) * 2017-09-15 2018-01-23 北京科技大学 A kind of refractory material liner body for ladle and preparation method thereof
CN109095896A (en) * 2018-08-21 2018-12-28 北京利尔高温材料股份有限公司 A kind of ladle slag line brick of useless submersed nozzle slag line material pug

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1176236A (en) * 1997-02-27 1998-03-18 宝山钢铁(集团)公司 Production method of refractory material for immersed sprue
WO2010127810A1 (en) * 2009-05-07 2010-11-11 Refractory Intellectual Property Gmbh & Co. Kg Moulded product consisting of a fire-proof ceramic material
CN102603334A (en) * 2012-03-26 2012-07-25 武汉科技大学 Submersed nozzle and preparation method thereof
CN107617732A (en) * 2017-09-15 2018-01-23 北京科技大学 A kind of refractory material liner body for ladle and preparation method thereof
CN109095896A (en) * 2018-08-21 2018-12-28 北京利尔高温材料股份有限公司 A kind of ladle slag line brick of useless submersed nozzle slag line material pug

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
董伟霞等: "《陶瓷工艺基础》", 31 December 2017, 江苏凤凰美术出版社 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113307625A (en) * 2021-05-28 2021-08-27 郑州大学 ZrO (ZrO)2-C fiber composite material and preparation method thereof
CN113560559A (en) * 2021-09-27 2021-10-29 北京利尔高温材料股份有限公司 Preparation method of long-life submerged nozzle and long-life submerged nozzle
CN113560559B (en) * 2021-09-27 2022-01-07 日照利尔高温新材料有限公司 Preparation method of long-life submerged nozzle and long-life submerged nozzle

Similar Documents

Publication Publication Date Title
CN106083110B (en) High strength steel ladle-lining castable
CN102020480B (en) Castable used for electric furnace slag/iron notch as well as method for pouring electric furnace slag/iron notch
CN110511046B (en) Refractory castable for slag stopping component of continuous casting tundish and preparation method
CN106431437A (en) Ladle slag line magnesia carbon brick as well as preparation and application thereof
CN104493150B (en) A kind of alumina-silica drainage agent and preparation method thereof
CN112500139A (en) High-strength anti-erosion ladle self-flow castable and preparation method thereof
CN109202055B (en) High-quality special steel drainage agent and preparation method thereof
CN107244904A (en) A kind of corundum spinel castable and preparation method thereof
CN110156462A (en) The smelting stainless steel submersed nozzle and its production method of resistant to corrosion long-life
CN104788105B (en) Desulphurization gun castable for nickel iron ladles, and preparation method and application thereof
CN107651968A (en) A kind of refined steel ladles chromium matter stuffing sand and preparation method thereof
CN112408947A (en) High-temperature-resistant coating for steel ladle and preparation method thereof
CN110372341A (en) A kind of ramming mass type slag runner dam
CN103387402A (en) Iron runner casting material for blast furnace for smelting vanadium titanium ore and preparation method thereof
CN104261844A (en) Magnesium diversion sand for ladles and preparation method thereof
CN110372406A (en) A kind of converter slag-resisting Al2O3Outer nozzle brick of-C and preparation method thereof
CN112430105A (en) Aluminum-magnesium-carbon brick prepared from regenerated tabular corundum and preparation method thereof
CN109133874A (en) A kind of bakie working lining fireproof coating
CN110451999A (en) A kind of aluminum-spinel refractory casting material and preparation method thereof
CN108409300A (en) Rich magnesium alkalinity sliding plate brick and preparation method thereof
CN107365159A (en) A kind of long production method for pouring time integral column of sagger of smelting suprelow carbon steel tundish
CN104370560B (en) A kind of preparation method of basket pouring material
CN110395998B (en) Castable for ferrovanadium spray gun and method for pouring ferrovanadium spray gun
CN114478031A (en) Production process of unburned aluminum-magnesia-carbon brick for electric furnace steel ladle
CN116396063B (en) 99 castable for resisting copper liquid erosion and peeling in low-oxygen copper rod production

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