CN109265146A - A kind of coverter pig mending material and preparation method thereof - Google Patents
A kind of coverter pig mending material and preparation method thereof Download PDFInfo
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- CN109265146A CN109265146A CN201811181421.3A CN201811181421A CN109265146A CN 109265146 A CN109265146 A CN 109265146A CN 201811181421 A CN201811181421 A CN 201811181421A CN 109265146 A CN109265146 A CN 109265146A
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- coverter pig
- mending material
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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
- C04B35/03—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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite
- C04B35/04—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 magnesium oxide, calcium oxide or oxide mixtures derived from dolomite based on magnesium oxide
- C04B35/043—Refractories from grain sized mixtures
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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
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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- 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
- C21C5/44—Refractory linings
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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
- 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
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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
- 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)
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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
- 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
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- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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- 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
- C04B2235/405—Iron group metals
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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
- 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
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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
- 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
- C04B2235/52—Constituents or additives characterised by their shapes
- C04B2235/5208—Fibers
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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
- 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
- C04B2235/9692—Acid, alkali or halogen resistance
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
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- Organic Chemistry (AREA)
- Structural Engineering (AREA)
- Metallurgy (AREA)
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- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The present invention relates to technical field of refractory materials more particularly to a kind of coverter pig mending material and preparation method thereof.Raw material including following parts by weight: 30~60 parts of medium-grade magnesite；30~60 parts of spinelle sand；10~20 parts of bonding agent；2~5 parts of additive；Wetting agent；6~10 parts.The present invention preferably adaptation iron converter slag basicity can control the use environment 0.5~1.0.Greatly improve the mending material low-temperature sintering performance, the service condition suitable for cupola furnace low temperature.The present invention is other than the good self drainage of demand, hot strength, corrosion resistance and thermal shock, also have firm time short, the advantages of to reduce converter blowing out maintenance time, improve its operating efficiency, it is good with converter working lining bonding simultaneously, to prevent it from peeling off in use.Cupola furnace furnace life, economic benefits are greatly improved.
Description
Technical field
The present invention relates to technical field of refractory materials more particularly to a kind of coverter pig mending material and preparation method thereof.
Background technique
As winter arrives, the north initially enters heating period, and to protect environment, most of steel mill's blast furnace enters limited production of avoiding the peak hour
Stage, while steel mill's production is continual and steady to be carried out not influence, a kind of novel converter iron processes are come into being, converter iron master
Want technique substantially are as follows: 50t molten iron, steel scrap, slag former, concurrent heating agent etc. are put into furnace in three times, each oxygen blast 10min or so,
Duration 70min or so is smelted every time, and 1300-1400 DEG C of tapping temperature, the MgO in 0.5-1.0, slag of basicity of slag control at present contains
6-10%, TFe8-12%, C3-5% are measured, and the change iron converter deactivates depending on still enabling with steel mill's molten iron demand.
Currently without the mending material for being suitable for this converter iron process, existing mending material firm time is longer, with converter
Working lining bonding is bad, can not prevent its peeling, causing iron converter service life is lower.
Summary of the invention
To overcome above-mentioned the deficiencies in the prior art, the present invention provides a kind of coverter pig mending materials and preparation method thereof.This
Invention firm time is short, good with converter working lining bonding, to prevent it from peeling off in use, improving iron converter
Service life.
In order to achieve the above object, the present invention is implemented with the following technical solutions:
A kind of coverter pig mending material, the raw material including following parts by weight:
MgO mass percentage >=95% of the medium-grade magnesite, grain composition is: 8~3mm be 20~30 parts, 3~
1mm is 20~30 parts.
MgO mass percentage >=28%, AL 2O3 mass percentage >=65% of the spinelle sand；Grain composition
Be: 1~0mm is 10~20 parts, and 10~15 parts of fine powder, granularity is less than 0.088mm.
The bonding agent is one of pitch, silicon ash, resin-oatmeal or more than one mixture.
The additive is one of Fe powder, silicon ash, explosion-proof fiber or more than one mixture.
The wetting agent is one of kerosene, diesel oil or used oil or more than one mixture.
A kind of preparation method of coverter pig mending material, specifically comprises the following steps:
(1) raw material is broken, sieves, fine grinding: medium-grade magnesite is broken, screening, fine grinding separate 8~3mm and two kinds of 3~1mm
The other medium-grade magnesite of granular-grade；Spinelle sand is broken, screening, fine grinding, separate 0~1mm and≤0.088mm two kinds of particles rank
Spinelle sand；
(2) ingredient: raw material is weighed by formula described in claim 1~6；
(3) it is kneaded: first aggregate and wetting agent being added and are kneaded equipment, is kneaded 2~3min；Again by bonding agent, additive, thin
Powder, which is added, is kneaded equipment, is kneaded 3~5min；
(4) dry: mixture being put into drying in bulk material drying machine, is mended after drying up to loose, dry shape, uniformly
Furnace charge.Compared with prior art, the beneficial effects of the present invention are:
The present invention is that main aggregate makes the mending material have excellent acid resistance using spinelle sand as matrix with medium-grade magnesite
It corrodes, preferably adaptation iron converter slag basicity can control the use environment 0.5~1.0.The present invention using Fe powder, silicon ash,
One of explosion-proof fiber or more than one mixture increase and breathe freely, alleviate stress, not promote sintering, greatly as additive
The mending material low-temperature sintering performance, the service condition suitable for the cupola furnace low temperature are improved greatly.The present invention is good in addition to demand
Outside self drainage, hot strength, corrosion resistance and thermal shock, also have firm time short, to reduce converter blowing out maintenance time, improves
The advantages of its operating efficiency, at the same it is good with converter working lining bonding, to prevent it from peeling off in use.Significantly mention
The high cupola furnace furnace life, economic benefits.
Specific embodiment
Specific embodiments of the present invention will be further explained below, but is not intended to limit the scope of the invention:
It is exemplified below 6 embodiments to illustrate as to the specific embodiment of the invention is raw materials used, particular content
As shown in table 1.
A kind of table 1: the list of ingredients (unit: parts by weight) of embodiment 1 to the coverter pig mending material of embodiment 6
A kind of preparation method of coverter pig mending material, specifically comprises the following steps:
(1) raw material is broken, sieves, fine grinding: medium-grade magnesite is broken, screening, fine grinding separate 8~3mm and two kinds of 3~1mm
The other medium-grade magnesite of granular-grade；Spinelle sand is broken, screening, fine grinding, separate 0~1mm and≤0.088mm two kinds of particles rank
Spinelle sand；
(2) ingredient: raw material is weighed by formula described in table 1；
(3) it is kneaded: first aggregate and wetting agent being added and are kneaded equipment, is kneaded 2~3min；Again by bonding agent, additive, thin
Powder, which is added, is kneaded equipment, is kneaded 3~5min；
(4) dry: mixture being put into drying in bulk material drying machine, is mended after drying up to loose, dry shape, uniformly
Furnace charge.
The present invention is that main aggregate makes the mending material have excellent acid resistance using spinelle sand as matrix with medium-grade magnesite
It corrodes, preferably adaptation iron converter slag basicity can control the use environment 0.5~1.0.The present invention using Fe powder, silicon ash,
One of explosion-proof fiber or more than one mixture increase and breathe freely, alleviate stress, not promote sintering, greatly as additive
The mending material low-temperature sintering performance, the service condition suitable for the cupola furnace low temperature are improved greatly.The present invention is good in addition to demand
Outside self drainage, hot strength, corrosion resistance and thermal shock, also have firm time short, to reduce converter blowing out maintenance time, improves
The advantages of its operating efficiency, at the same it is good with converter working lining bonding, to prevent it from peeling off in use.Significantly mention
The high cupola furnace furnace life, economic benefits.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of coverter pig mending material, which is characterized in that the raw material including following parts by weight:
2. a kind of coverter pig mending material according to claim 1, which is characterized in that the MgO mass hundred of the medium-grade magnesite
Divide content >=95%, grain composition is: 8~3mm is 20~30 parts, and 3~1mm is 20~30 parts.
3. a kind of coverter pig mending material according to claim 1, which is characterized in that the MgO mass hundred of the spinelle sand
Divide content >=28%, AL2O3Mass percentage >=65%；Grain composition is: 1~0mm be 10~20 parts, 10~15 parts of fine powder,
Its granularity is less than 0.088mm.
4. a kind of coverter pig mending material according to claim 1, which is characterized in that the bonding agent is pitch, silicon ash, tree
One of cosmetics or more than one mixture.
5. a kind of coverter pig mending material according to claim 1, which is characterized in that the additive is Fe powder, silicon ash, prevents
One of quick-fried fiber or more than one mixture.
6. a kind of coverter pig mending material according to claim 1, which is characterized in that the wetting agent be kerosene, diesel oil or
One of used oil or more than one mixture.
7. a kind of preparation method of coverter pig mending material according to claim 1, which is characterized in that specifically include following step
It is rapid:
(1) raw material is broken, sieves, fine grinding: medium-grade magnesite is broken, screening, fine grinding separate 8~3mm and 3~1mm two kinds of particles
The medium-grade magnesite of rank；Spinelle sand is broken, screening, fine grinding, separate the point of 0~1mm and≤0.088mm two kinds of particles rank
Spar sand；
(2) ingredient: raw material is weighed by formula described in claim 1~6；
(3) it is kneaded: first aggregate and wetting agent being added and are kneaded equipment, is kneaded 2~3min；Bonding agent, additive, fine powder are added again
Enter and be kneaded equipment, is kneaded 3~5min；
(4) dry: mixture to be put into drying in bulk material drying machine, up to loose, dry shape, uniform fettling after drying
Material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811181421.3A CN109265146A (en) | 2018-10-11 | 2018-10-11 | A kind of coverter pig mending material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811181421.3A CN109265146A (en) | 2018-10-11 | 2018-10-11 | A kind of coverter pig mending material and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN109265146A true CN109265146A (en) | 2019-01-25 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811181421.3A Withdrawn CN109265146A (en) | 2018-10-11 | 2018-10-11 | A kind of coverter pig mending material and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112441840A (en) * | 2020-12-07 | 2021-03-05 | 云南濮耐昆钢高温材料有限公司 | Converter repairing material prepared by utilizing recycled magnesia-hercynite bricks |
-
2018
- 2018-10-11 CN CN201811181421.3A patent/CN109265146A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112441840A (en) * | 2020-12-07 | 2021-03-05 | 云南濮耐昆钢高温材料有限公司 | Converter repairing material prepared by utilizing recycled magnesia-hercynite bricks |
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Application publication date: 20190125 |