CN110342911A - Gravity flow pouring material is used in a kind of repairing of fish torpedo ladle - Google Patents

Gravity flow pouring material is used in a kind of repairing of fish torpedo ladle Download PDF

Info

Publication number
CN110342911A
CN110342911A CN201910513134.6A CN201910513134A CN110342911A CN 110342911 A CN110342911 A CN 110342911A CN 201910513134 A CN201910513134 A CN 201910513134A CN 110342911 A CN110342911 A CN 110342911A
Authority
CN
China
Prior art keywords
silicon
torpedo ladle
gravity flow
fish torpedo
repairing
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
CN201910513134.6A
Other languages
Chinese (zh)
Inventor
温太阳
钟凯
崔园园
曹勇
祝少军
杨彬
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.)
Shougang Group Co Ltd
Original Assignee
Shougang Group 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 Shougang Group Co Ltd filed Critical Shougang Group Co Ltd
Priority to CN201910513134.6A priority Critical patent/CN110342911A/en
Publication of CN110342911A publication Critical patent/CN110342911A/en
Pending legal-status Critical Current

Links

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
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3205—Alkaline earth oxides or oxide forming salts thereof, e.g. beryllium oxide
    • C04B2235/3206—Magnesium oxides or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • C04B2235/3222—Aluminates other than alumino-silicates, e.g. spinel (MgAl2O4)
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
    • 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
    • C04B2235/3427—Silicates other than clay, e.g. water glass
    • C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
    • 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
    • C04B2235/38—Non-oxide ceramic constituents or additives
    • C04B2235/3852—Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
    • C04B2235/3873—Silicon nitrides, e.g. silicon carbonitride, silicon oxynitride
    • 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
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
    • C04B2235/447—Phosphates or phosphites, e.g. orthophosphate, hypophosphite
    • 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
    • C04B2235/9676—Resistance against chemicals, e.g. against molten glass or molten salts against molten metals such as steel or aluminium

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Products (AREA)

Abstract

The present invention provides a kind of fish torpedo ladle repairing gravity flow pouring materials, including raw material and bonding agent, the component of the raw material includes: the percentages to account for the total mass of raw material, Brown Alundum 50~70%, silicon-carbide particle 5~15%, metallic silicon 1~5%, ferro-silicon nitride 0~5%, pelletted pitch 0.3~1.5%, pyrophillite 1~5%, spinelle 1~5%, sintering aid 1~8%, the sum of mass percent of above-mentioned raw materials are 100%；The bonding agent component includes: the percentages to account for the total mass of raw material, magnesia powder 0~1%, dispersing agent 0~0.5%, additive 0~0.5%, silica solution 7~12%.Fish torpedo ladle artesian repairing material intensity provided by the invention is high, and resistant to corrosion, anti-strip, oxidation resistance is strong, easily constructs, and primary construction can extend 200 furnace of fish torpedo ladle service life or more, improve Molten Iron Transportation efficiency, reduces steel mill's production cost.

Description

Gravity flow pouring material is used in a kind of repairing of fish torpedo ladle
Technical field
The invention belongs to transport molten iron fish torpedo ladle technical field, and in particular to gravity flow pouring is used in a kind of repairing of fish torpedo ladle Material.
Background technique
Torpedo tank car is a kind of large-scale Molten Iron Transportation equipment, has that heat loss is small, soaking time is long, energy saving etc. excellent Point is widely used in major steel plant.But the torpedo tank car of current major steel mill commonly encounters following problem: (1) torpedo Tank liner mainly uses Al2O3- SiC-C brick masonry, the damage of regional area oxidative exfoliation are more serious；(2) torpedo tank lining structure therewith shape Formula is irregular, is similar to " torpedo ", comprising: the band of column, conical ring, plug and tank mouth position, seam is more, builds complicated, part damage After be not easy to repair；(3) it is influenced by process for making and steel interface organization of production, most steel mill's fish torpedo ladle turnover rates are lower, in tank Temperature drop is big, aggravates resistance to material damage；(4) certain steel mills carry out in tank plus iron scale " de- titanium " molten iron pre-processes, and are further exacerbated by resistance to Material liner body corrodes, and influences fish torpedo ladle service life.
Unshape refractory maintenance have quick construction, liner body good integrity without brickwork joint, be not required to " playing support " masonry etc. Advantage is the important technical of torpedo tank liner maintenance.Fish torpedo ladle repairing at present is mainly used and fish torpedo ladle brick with castable The Al of same material2O3- SiC-C type castable (hereinafter referred to as ASC type), main composition is Al2O3, SiC and C, each component content because The difference using the difference at position.Common raw material has alumine, Brown Alundum, dense alumina, SiC, carbon etc., uses Bonding agent be aluminous cement, SiO2Micro mist and Al2O3Furthermore micro mist is additionally added a small amount of additive, such as antioxidant metal Si powder, Al powder etc..But it is directed to the use environment of current fish torpedo ladle, there are several defects for used ASC type castable:
(1) traditional cement ASC castable refractory, due to containing the crystallization water in cement, (crystallization water even entirely makes With being all difficult to empty in the process, thus refractory casting body can be made to form inhomogeneous structure), so needing longer maintenance and baking The roasting time.Meanwhile the CaO in cement easily reacts with other compositions generate eutectic phase at high temperature, this may cause material High-temperature behavior decline.
(2) used colloidal sol combination ASC type castable, due to not proposing to make castable to keep volume stability or microdilatancy Measure is easy to cause fish torpedo ladle in bearing hot and cold alternation effect repeatedly, and castable cracks and flakes off, and influences using the longevity Life.
(3) used ASC type castable, which does not suggest that, is suitable for adding the pretreated fish torpedo ladle anti-slag of iron scale " de- titanium " molten iron The solution of problem.Contain more Fe in such fish torpedo ladle slag2+、Fe3+, can be generated with the reaction of ASC castable big Eutectic is measured, service life is seriously affected.
Summary of the invention
In view of this, the shortcomings that for existing fish torpedo ladle repairing castable, the present invention provides a kind of repairings of fish torpedo ladle to use Gravity flow pouring material, the gravity flow pouring material intensity height, anti-strip, corrosion resistance are strong, and primary construction can extend fish torpedo ladle and use the longevity 200 furnaces or more are ordered, Molten Iron Transportation efficiency is effectively improved, reduce steel mill's production cost.
First aspect present invention provides a kind of fish torpedo ladle repairing gravity flow pouring material, including raw material and bonding agent, described The component of raw material includes: the percentages to account for the total mass of raw material, Brown Alundum 50~70%, silicon-carbide particle 5~15%, Metallic silicon 1~5%, ferro-silicon nitride 0~5%, pelletted pitch 0.3~1.5%, pyrophillite 1~5%, spinelle 1~5% help burning Agent 1~8%, the sum of mass percent of above-mentioned raw materials are 100%；The bonding agent component includes: to account for the total matter of the raw material The percentages of amount, magnesia powder 0~1%, dispersing agent 0~0.5%, additive 0~0.5%, silica solution 7~12%.
The effect of each raw material is as follows in above-mentioned fish torpedo ladle repairing gravity flow pouring material:
Brown Alundum: it is used as aggregate, preferably Al2O3Content is in the Brown Alundum of 90~98.5wt%, and purity is high, elevated temperature strength is good, Creep is small.
Silicon carbide: being mainly used as aggregate, and product is made to have high-intensitive, high thermal shock resistance within the scope of wider temperature, Excellent wearability, high heat conductance, resistance to chemical attack.
Metallic silicon and ferro-silicon nitride: it prevents SiC and C in oxygen and castable in air from reacting, makes SiC and C It is gradually consumed, material structure becomes loose, and corrosion resistance and wearability are deteriorated.
Pyrophillite and magnesia powder: usually adding pyrophyllite in ASC type castable, using wherein quartzy α → β phase The micro-crack and micro- stomata that expansion generates caused by becoming result in the reduction of elasticity modulus, enhance the resistance to flaking of sample, but Quartz is precipitated under about 1000 DEG C or higher temperature in glass phase, influences using effect.Pyrophyllite and magnesia powder in the present invention Cordierite is produced, does not decompose and converts at 1300 DEG C or more, and generating process generates affter-expansion, that is, can inhibit material The generation being cracked in thermal cycle repeatedly, to increase substantially the service life of such castable refractory.
Spinelle: MgO-SiO is utilized2-H2O cohesion provides normal temperature strength, forms magnesium aluminate spinel at high temperature, easily The Fe in absorption slag2+、Fe3+Deng, formation composite spinelle, and then the viscosity for improving slag prevents slag from further seeping to castable Thoroughly, it is possible to improving the slag resistance of castable.
Sintering aid: being difficult to be sintered between the aggregate of ASC type castable, usually only relies on substrate formed combination phase ability It bonds them together, is present in around corundum in granules after silicon powder or the addition of aluminium micro mist, in the engaging portion of particle and matrix Position forms the mullite in situ reaction annulus around distribution of particles, and corundum in granules and matrix are combined as a whole.
Dispersing agent: after requiring castable to be mixed when construction with certain activity duration (be generally no less than 45min, Castable must have mobility i.e. in 45min), dispersing agent provided by the invention can reduce the viscosity of matrix slurry, provide silicon The mobility of colloidal sol combined corundum castable, convenient for construction.
Bonding agent: based on silica solution, since silica solution is liquid bonding agent, dispersion performance is more preferable, can be uniformly distributed In castable, hydrated product is not generated in maintenance processes, the key variation only between silica sol particle forms nanometer after dehydration The silica dioxide granule of grade, activity are bigger, it is easier to and mullite is generated, has cooking performance good, elevated temperature strength height, volume stability The advantages that property is good.
Additive: castable requires to have certain mobility (can solve by addition dispersing agent) in construction period, but Hardening need to be condensed within a short period of time again after moulding by casting, and castable is made to obtain enough mechanical strengths.However silica solution knot It is long to close the generally existing condensation firm time of castable, the low problem of demoulding strength, and the problem can not be by simply reconciling dispersion The number of agent additional amount solves.Previous patent does not refer to the solution of the problem yet.Since demoulding strength mainly takes The certainly condensation reaction in castable maintenance processes between silica sol particle, additive of the invention can provide a kind of living with surface The anionic small organic molecule structure of property agent, can solve silica sol particle because its Zeta-potential is higher and is difficult to happen collision Problem accelerates its condensation reaction, improves demoulding intensity.
Preferably, in above-mentioned fish torpedo ladle repairing gravity flow pouring material, to account for the percentages of the total mass of raw material, institute State the Brown Alundum 30~50% and granularity≤1mm Brown Alundum 20~40% that Brown Alundum includes 5~1mm of granularity, the silicon carbide Granularity≤1mm of particle, granularity≤0.075mm of the metallic silicon, granularity≤0.045mm of the ferro-silicon nitride, the leaf Granularity≤0.18mm of cured stone, granularity≤0.075mm of the spinelle, granularity≤0.075mm of the magnesia powder.
Castable from flow phenomenon be its gravity be more than its yield stress as a result, the smaller easier stream of its yield stress It is dynamic.And the acquisition of smaller yield stress, it needs enough matrix sufficiently to wrap up and lubricate particles of aggregates, to reduce aggregate Intergranular direct contact and friction.Gradation provided by the invention can make base portion sufficiently wrap up and lubricate aggregate, castable When construction need not vibration can pave automatically by construction part, mobility is not segregated under the premise of reaching 80-120%, not bleeding.
Preferably, in above-mentioned fish torpedo ladle repairing gravity flow pouring material, by percentage to the quality, in the Brown Alundum Al2O3Content is 90~98.5%；SiC content in the silicon-carbide particle is 70~98.5%；Si content in the metallic silicon >=98%；Content of MgO in the magnesia powder is 95~99%；Al in the spinelle2O3Content is 40~55%；Institute State SiO in silica solution2For content 25~40%, pH value is 9~10.5.
Preferably, the sintering aid is silicon powder, α-Al2O3One or both of micro mist.Specifically, when with silicon powder With α-Al2O3When micro mist mixture is as sintering aid, two kinds of components can be mixed by any ratio.
Preferably, the dispersing agent is one or both of sodium tripolyphosphate, calgon.Specifically, when with three When polyphosphate sodium and calgon mixture are as dispersing agent, two kinds of components can be mixed by any ratio.
Preferably, the additive mixes for the one or two of citric acid and naphthalenesulfonic acid-formaldehyde condensate.
Preferably, in above-mentioned fish torpedo ladle repairing gravity flow pouring material, the component of the raw material includes: to account for the raw material The percentages of gross mass, Brown Alundum 50~70%, silicon-carbide particle 5~15%, metallic silicon 1~5%, ferro-silicon nitride 3~ 5%, pelletted pitch 0.3~1.5%, pyrophillite 1~5%, spinelle 1~5%, sintering aid 1~8%, the quality of above-mentioned raw materials The sum of percentage is 100%；The bonding agent component includes: the percentages to account for the total mass of raw material, magnesia powder 0.4 ~1%, dispersing agent 0.08~0.5%, additive 0.1~0.5%, silica solution 7~10%.
Preferably, self drainage >=80% of the gravity flow pouring material, the porosity≤15%；Bulk density >=2.7g/cm3。
Second aspect of the present invention provides the preparation method of above-mentioned fish torpedo ladle repairing gravity flow pouring material, and step includes:
S1, Brown Alundum, pelletted pitch, silicon-carbide particle, metallic silicon, ferro-silicon nitride, pyrophillite, spinelle helped according to the ratio Dry-mixed 3~8min after burning agent, magnesia powder, additive and dispersant；
S2, continue to stir 6~10min of wet mixing after silica solution is added according to the ratio；
S3, the castable of the self drainage >=80% automatic levelling reparation construction position in fish torpedo ladle is obtained.
Compared with prior art, the beneficial effects of the present invention are:
Fish torpedo ladle repairing gravity flow pouring material provided by the invention can reach: self drainage >=80%, high temperature break resistant intensity (1400℃×0.5h)≥5MPa；Flexural strength (1500 DEG C × 3h) >=15MPa after burning；Compressive resistance (1500 DEG C × 3h) after burning ≥80MPa；The porosity≤15%；Bulk density >=2.7g/cm3.Primary construction can extend 200 furnace of fish torpedo ladle service life with On, Molten Iron Transportation efficiency is improved, steel mill's production cost is reduced.
Specific embodiment
To facilitate the understanding of the present invention, present invention work more comprehensively, is meticulously described below in conjunction with embodiment, but this hair Bright protection scope is not limited to embodiment in detail below.
Unless otherwise defined, all technical terms used hereinafter and the normally understood meaning of those skilled in the art It is identical.Technical term used herein is intended merely to the purpose of description specific embodiment, is not intended to the limitation present invention Protection scope.
Unless otherwise specified, various raw material, reagent, the instrument and equipment etc. used in the present invention, can pass through Market is commercially available or can be prepared by existing method.
Embodiment 1
A kind of fish torpedo ladle repairing gravity flow pouring material is present embodiments provided, by including following components in percentage by weight system At the Brown Alundum 30wt% of the Brown Alundum 40wt% of: 5~1mm of granularity, 1~0mm of granularity, the silicon carbide of 1~0mm of granularity 10wt%, granularity≤0.075mm metallic silicon 3wt%, granularity≤0.045mm ferro-silicon nitride 5wt%, granularity≤0.18mm leaf are cured Stone 2wt%, granularity≤0.075mm spinelle 3wt%, sintering aid (silicon powder) 7wt%；The sum of weight percent of above-mentioned raw materials It is 100%；Dispersing agent (the trimerization phosphorus of magnesia powder 0.5wt%, 0.1wt% of additional above-mentioned raw materials gross weight granularity≤0.075mm Sour sodium), the additive (citric acid) of 0.1wt%, 9wt% silica solution make bonding agent.
By percentage to the quality, the Al in the Brown Alundum2O3Content is 95%；SiC content in the silicon-carbide particle 88.5%；Si content 98% in the metallic silicon；Content of MgO in the magnesia powder is 97%；In the spinelle Al2O3Content is 48%；SiO in the silica solution2Content is 35%, pH value 9.5.
Above-mentioned fish torpedo ladle repairing gravity flow pouring material the preparation method comprises the following steps:
According to the ratio by Brown Alundum, pitch, silicon carbide, metallic silicon, ferro-silicon nitride, pyrophillite, spinelle, magnesia powder, help It burns the solid particles such as agent, dispersing agent, additive and powder is put into the dry-mixed 5min of blender.The silica solution of addition 9% is stirred for wet Mixed 8min, obtains gravity flow pouring material
Through detecting, gained castable self drainage 85%, physical index are as follows: bulk density 2.81g/cm3；Apparent porosity 12.2%, high temperature break resistant intensity (1100 DEG C × 0.5h) 5MPa；Compressive resistance (1500 DEG C × 3h) 101MPa after burning, in fish torpedo ladle The first use service life construct up to 205 times.
Embodiment 2
A kind of fish torpedo ladle repairing gravity flow pouring material is present embodiments provided, by including following components in percentage by weight system At the Brown Alundum 35wt% of the Brown Alundum 35wt% of: 5~1mm of granularity, 1~0mm of granularity, the silicon carbide of 1~0mm of granularity 10wt%, granularity≤0.075mm metallic silicon 5wt%, granularity≤0.045mm ferro-silicon nitride 3wt%, granularity≤0.18mm leaf are cured Stone 2wt%, granularity≤0.075mm spinelle 5wt%, sintering aid (α-Al2O3Micro mist) 5wt%；The weight percent of above-mentioned raw materials The sum of be 100%；The dispersing agent of magnesia powder 0.4wt%, 0.08wt% of additional above-mentioned raw materials gross weight granularity≤0.075mm The additive (naphthalenesulfonic acid-formaldehyde condensate) of (calgon), 0.2wt%, the silica solution of 9.5wt% make bonding agent.
By percentage to the quality, the Al in the Brown Alundum2O3Content is 92%；SiC content in the silicon-carbide particle 75%；Si content 98.5% in the metallic silicon；Content of MgO in the magnesia powder is 95%；In the spinelle Al2O3Content is 53%；SiO in the silica solution2Content is 30%, pH value 9.
Above-mentioned fish torpedo ladle repairing gravity flow pouring material the preparation method comprises the following steps:
According to the ratio by corundum, pitch, silicon carbide, metallic silicon, ferro-silicon nitride, pyrophillite, spinelle, magnesia powder, help burning The solid particles such as agent, dispersing agent, additive and powder are put into the dry-mixed 5min of blender.The silica solution of addition 9.5% is stirred for wet Mixed 8min；
Through detecting, gained castable self drainage 90%, physical index are as follows: bulk density 2.72g/cm3；Apparent porosity 13.8%, high temperature break resistant intensity (1100 DEG C × 0.5h) 4.1MPa；Compressive resistance (1500 DEG C × 3h) 93MPa after burning, in torpedo Tank constructs the first use service life up to 200 times.
Embodiment 3
A kind of fish torpedo ladle repairing gravity flow pouring material is present embodiments provided, by including following components in percentage by weight system At the Brown Alundum 20wt% of the Brown Alundum 45wt% of: 5~1mm of granularity, 1~0mm of granularity, the silicon carbide of 1~0mm of granularity 15wt%, granularity≤0.075mm metallic silicon 3wt%, granularity≤0.045mm ferro-silicon nitride 1wt%, granularity≤0.18mm leaf are cured Stone 4wt%, granularity≤0.075mm spinelle 5wt%, sintering aid (silicon powder: α-Al2O3Micro mist mass ratio is 1:1) 7wt%；On Stating the sum of weight percent of raw material is 100%；The magnesia powder 0.8wt% of additional above-mentioned raw materials gross weight granularity≤0.075mm, The dispersing agent (sodium tripolyphosphate) of 0.2wt%, 0.5wt% additive (0.2wt% citric acid+0.3wt% sodium naphthalene sulfonate), The silica solution of 8wt% makees bonding agent.
By percentage to the quality, the Al in the Brown Alundum2O3Content is 98%；SiC content in the silicon-carbide particle 95%；Si content 98% in the metallic silicon；Content of MgO in the magnesia powder is 99%；In the spinelle Al2O3Content is 42%；SiO in the silica solution2Content is 38%, pH value 9.1.
Above-mentioned fish torpedo ladle repairing gravity flow pouring material the preparation method comprises the following steps:
According to the ratio by corundum, pitch, silicon carbide, metallic silicon, ferro-silicon nitride, pyrophillite, spinelle, magnesia powder, help burning The solid particles such as agent, dispersing agent, additive and powder are put into the dry-mixed 5min of blender.The silica solution for being added 8% is stirred for wet mixing 8min；Gained castable character and performance and embodiment 1 are almost the same.
Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as It selects embodiment and falls into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims (9)

1. a kind of fish torpedo ladle repairing gravity flow pouring material, it is characterised in that: including raw material and bonding agent, the component packet of the raw material It includes: the percentages to account for the total mass of raw material, Brown Alundum 50~70%, silicon-carbide particle 5~15%, metallic silicon 1~ 5%, ferro-silicon nitride 0~5%, pelletted pitch 0.3~1.5%, pyrophillite 1~5%, spinelle 1~5%, sintering aid 1~8%, The sum of mass percent of above-mentioned raw materials is 100%；The bonding agent component includes: the percentage to account for the total mass of raw material Meter, magnesia powder 0~1%, dispersing agent 0~0.5%, additive 0~0.5%, silica solution 7~12%.
2. fish torpedo ladle repairing gravity flow pouring material as described in claim 1, it is characterised in that: to account for the total mass of raw material Percentages, the Brown Alundum include the Brown Alundum 30~50% and granularity≤1mm Brown Alundum 20~40% of 5~1mm of granularity, Granularity≤1mm of the silicon-carbide particle, granularity≤0.075mm of the metallic silicon, the granularity of the ferro-silicon nitride≤ 0.045mm, granularity≤0.18mm of the pyrophillite, granularity≤0.075mm of the spinelle, the granularity of the magnesia powder ≤0.075mm。
3. fish torpedo ladle repairing gravity flow pouring material as described in claim 1, it is characterised in that: by percentage to the quality, described Al in Brown Alundum2O3Content is 90~98.5%；SiC content in the silicon-carbide particle is 70~98.5%；The metal Si content >=98% in silicon；Content of MgO in the magnesia powder is 95~99%；Al in the spinelle2O3Content is 40 ~55%；SiO in the silica solution2For content 25~40%, pH value is 9~10.5.
4. fish torpedo ladle as described in claim 1 repairing gravity flow pouring material, it is characterised in that: the sintering aid be silicon powder, α-Al2O3One or both of micro mist.
5. fish torpedo ladle repairing gravity flow pouring material as described in claim 1, it is characterised in that: the dispersing agent is tripolyphosphate One or both of sodium, calgon.
6. fish torpedo ladle as described in claim 1 repairing gravity flow pouring material, it is characterised in that: the additive be citric acid and One or both of naphthalenesulfonic acid-formaldehyde condensate.
7. fish torpedo ladle as described in claim 1 repairing gravity flow pouring material, it is characterised in that: the component of the raw material includes: To account for the percentages of the total mass of raw material, Brown Alundum 50~70%, silicon-carbide particle 5~15%, metallic silicon 1~5%, nitrogen SiClx iron 3~5%, pelletted pitch 0.3~1.5%, pyrophillite 1~5%, spinelle 1~5%, sintering aid 1~8%, above-mentioned original The sum of mass percent of material is 100%；The bonding agent component includes: the percentages to account for the total mass of raw material, magnesium Sand fine powder 0.4~1%, dispersing agent 0.08~0.5%, additive 0.1~0.5%, silica solution 7~10%.
8. fish torpedo ladle repairing gravity flow pouring material as described in claim 1, it is characterised in that: the gravity flow of the gravity flow pouring material Property >=80%, the porosity≤15%；Bulk density >=2.7g/cm3。
9. the fish torpedo ladle repairing preparation method of gravity flow pouring material, step packet described in any one of claim 1~8 claim It includes:
S1, according to the ratio by Brown Alundum, pelletted pitch, silicon-carbide particle, metallic silicon, ferro-silicon nitride, pyrophillite, spinelle, help burning Dry-mixed 3~8min after agent, magnesia powder, additive and dispersant；
S2, continue to stir 6~10min of wet mixing after silica solution is added according to the ratio；
S3, the castable of the self drainage >=80% automatic levelling reparation construction position in fish torpedo ladle is obtained.
CN201910513134.6A 2019-06-13 2019-06-13 Gravity flow pouring material is used in a kind of repairing of fish torpedo ladle Pending CN110342911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910513134.6A CN110342911A (en) 2019-06-13 2019-06-13 Gravity flow pouring material is used in a kind of repairing of fish torpedo ladle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910513134.6A CN110342911A (en) 2019-06-13 2019-06-13 Gravity flow pouring material is used in a kind of repairing of fish torpedo ladle

Publications (1)

Publication Number Publication Date
CN110342911A true CN110342911A (en) 2019-10-18

Family

ID=68182042

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910513134.6A Pending CN110342911A (en) 2019-06-13 2019-06-13 Gravity flow pouring material is used in a kind of repairing of fish torpedo ladle

Country Status (1)

Country Link
CN (1) CN110342911A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111777409A (en) * 2020-07-10 2020-10-16 首钢集团有限公司 Brick for molten iron ladle with high slag corrosion resistance and preparation method thereof
CN112745134A (en) * 2021-01-13 2021-05-04 营口四通高温新材料科技有限公司 Air brick containing corundum ceramic balls and preparation method thereof
CN114163220A (en) * 2021-10-29 2022-03-11 武汉钢铁集团耐火材料有限责任公司 Torpedo tank mouth pouring body made of composite material and construction method thereof
CN115259839A (en) * 2022-07-25 2022-11-01 中冶武汉冶金建筑研究院有限公司 Integral refractory castable for preheating section side wall of belt type roasting machine and preparation method thereof
CN115403391A (en) * 2022-08-16 2022-11-29 鄂尔多斯市西金矿冶有限责任公司 Silicon carbide-based castable for repairing carbonaceous furnace eye bricks and preparation method thereof

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
张阳: "外加剂对硅溶胶结合刚玉质浇注料脱模强度和流动性的影响", 《中国学术期刊（光盘版）》 *
徐自伟: "叶蜡石粉对Al2O3-SiC-C质浇注料性能的影响", 《耐火材料》 *
李勇: "《氮化硅铁及其在耐火材料中的应用》", 30 May 2018, 冶金工业出版社 *
王诚训: "《耐火浇注料及其技术发展》", 30 April 2015, 冶金工业出版社 *
韩亚苓: "Al2O3／堇青石陶瓷的制备和抗热震性能研究", 《沈阳工业大学学报》 *
魏军从: "结合剂对氧化铝-碳化硅-碳质铁沟浇注料力学性能和显微结构的影响", 《硅酸盐通报》 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111777409A (en) * 2020-07-10 2020-10-16 首钢集团有限公司 Brick for molten iron ladle with high slag corrosion resistance and preparation method thereof
CN112745134A (en) * 2021-01-13 2021-05-04 营口四通高温新材料科技有限公司 Air brick containing corundum ceramic balls and preparation method thereof
CN114163220A (en) * 2021-10-29 2022-03-11 武汉钢铁集团耐火材料有限责任公司 Torpedo tank mouth pouring body made of composite material and construction method thereof
CN114163220B (en) * 2021-10-29 2022-12-23 武汉钢铁集团耐火材料有限责任公司 Torpedo tank mouth pouring body made of composite material and construction method thereof
CN115259839A (en) * 2022-07-25 2022-11-01 中冶武汉冶金建筑研究院有限公司 Integral refractory castable for preheating section side wall of belt type roasting machine and preparation method thereof
CN115259839B (en) * 2022-07-25 2023-03-21 中冶武汉冶金建筑研究院有限公司 Integral refractory castable for preheating section side wall of belt type roasting machine and preparation method thereof
CN115403391A (en) * 2022-08-16 2022-11-29 鄂尔多斯市西金矿冶有限责任公司 Silicon carbide-based castable for repairing carbonaceous furnace eye bricks and preparation method thereof

Similar Documents

Publication Publication Date Title
CN110342911A (en) Gravity flow pouring material is used in a kind of repairing of fish torpedo ladle
CN101857446B (en) Refractory castable for desulfurization stirrer
CN100436376C (en) Ceramic Al203SiC refractory and preparation method thereof
CN102491769B (en) Composite bonding low-temperature constructional castable refractory
CN100439290C (en) Alumina base andalusite-SiC-C brick, manufacturing method and its application
CN109293375A (en) A kind of blast furnace iron tap channel refractory pour material and preparation method
CN101618967B (en) Dry coke quenching furnace circular passage tilt channel regional patching material
CN100467426C (en) Silicon carbide crusting resistant pouring material and preparation method thereof
CN101337821B (en) Low density fire resistant pouring material for KR stirring paddle
CN105859314B (en) A kind of smelting molten steel equipment carbon containing gunning refractory and preparation method thereof
CN101723685B (en) Magnesia-alumina spinel stemming
CN101618966B (en) Ladle castable
CN102491765B (en) Main ditch self-flowing anti-blowout pour material of main channel and construction method thereof
CN105819875B (en) Refractory castable for Ausmelt copper smelting furnace flue and preparation method thereof
CN101654375A (en) Low-carbon magnesia carbon brick
CN105254319B (en) A kind of castable of feeding chamber preformed bricks and preparation method thereof
CN101555146B (en) Refractory castable composition with heat insulation and wear resistance and application thereof
CN107141002A (en) Composite fibre for desulfurization agitator strengthens castable refractory
CN106904980A (en) A kind of magnesium aluminum spinel pouring material of blast furnace iron outlet groove slag corrosion resistance
JP2012036064A (en) Alumina-carbon unfired brick for lining molten metal holding furnace, method for producing the same, and furnace equipment and construction method using the same
CN104529495A (en) Skimming tool and production process
CN109111209B (en) Microcrystal material for cement kiln
CN110156445A (en) A kind of rotary hearth furnace high-strength wear-resistant pouring material and preparation method thereof
CN100355703C (en) Refractory brick of aluminium-chromium silicon carbide
CN101337822B (en) MgO-SiC-C fire resistant pouring material based on forsterite and method for preparing same

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

Application publication date: 20191018

RJ01 Rejection of invention patent application after publication