CN109503128A - A kind of high intensity converter mouth castable and preparation method - Google Patents
A kind of high intensity converter mouth castable and preparation method Download PDFInfo
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- CN109503128A CN109503128A CN201811623309.0A CN201811623309A CN109503128A CN 109503128 A CN109503128 A CN 109503128A CN 201811623309 A CN201811623309 A CN 201811623309A CN 109503128 A CN109503128 A CN 109503128A
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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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3409—Boron oxide, borates, boric acids, or oxide forming salts thereof, e.g. borax
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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
- C04B2235/38—Non-oxide ceramic constituents or additives
- C04B2235/3817—Carbides
- C04B2235/3826—Silicon carbides
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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
- C04B2235/40—Metallic constituents or additives not added as binding phase
- C04B2235/402—Aluminium
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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
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
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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
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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
- C04B2235/9607—Thermal properties, e.g. thermal expansion coefficient
- C04B2235/9615—Linear firing shrinkage
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- Ceramic Products (AREA)
Abstract
The present invention relates to a kind of high-intensitive converter mouth castables, and raw material and parts by weight include: granularity is 20-30 parts of highly-purity magnesite of 3-5mm；Granularity is 20-30 parts of highly-purity magnesite of 1-3mm；Granularity is 20-30 parts of highly-purity magnesite of 0-1mm；Granularity is 20-30 parts of highly-purity magnesite of 200 mesh；Antioxidant: 3-4 parts of silicon carbide；1-2 parts of metallic aluminium powder；Bonding agent: 1-10 parts of anhydrous magnesium sulfate；1-5 parts of citric acid；1-3 parts of boric acid；1-5 parts of sodium citrate；1-10 parts of calgon.Compressive resistance of the present invention is high, meets the resistance to material requirement of converter mouth.Furnace life is greatly improved, and reduces loss per ton steel for steel mill, reduces the consumption of resistance to material, and then reduce the exploitation to China mine, and china natural resources is made to have more permanent utilizing to develop.
Description
Technical field
The present invention relates to refractory material, in particular to a kind of high-intensitive converter mouth castable and preparation method.
Background technique
Pneumatic steelmaking is current the most frequently used method for making steel, with the development of metallurgical industry, the operating condition day of pneumatic steelmaking
It is beneficial harsh, therefore the requirement to the resistance to material of coverter pig is also higher and higher.It develops extremely urgent suitable for coverter pig high-strength fireproof.
The working environment of fire door is severe, is baked by high-temperature furnace gas, the vehement of flame, by the heat radiation of fluid slag when turndown is slagged tap
And leaching, sometimes also subject to the mechanical collision of loading hopper.
Castable has many advantages, such as that refractoriness is high, refractoriness under load is high, resistance to slag is strong and purification molten steel, thus from
It smelts clean steel and reduces molten steel temperature loss and go on smoothly and improve converter mouth service life angularly with ensure continuous casting
It sets out, is unfavorable using carbon containing refractory, and pour using castable is new developing direction.
For converter mouth castable, a kind of high-intensitive converter mouth castable and its life are researched and developed in proposition
Production method.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of high-intensitive converter mouth castable, compressive resistances
Height meets the resistance to material requirement of converter mouth.
To achieve the above object, the present invention is implemented with the following technical solutions:
A kind of high intensity converter mouth castable, raw material and parts by weight include: granularity is the highly-purity magnesite of 3-5mm
20-30 parts；Granularity is 20-30 parts of highly-purity magnesite of 1-3mm；Granularity is 20-30 parts of highly-purity magnesite of 0-1mm；Granularity is 200 mesh
20-30 parts of highly-purity magnesite；Antioxidant: 3-4 parts of silicon carbide；1-2 parts of metallic aluminium powder；Bonding agent: 1-10 parts of anhydrous magnesium sulfate；
1-5 parts of citric acid；1-3 parts of boric acid；1-5 parts of sodium citrate；1-10 parts of calgon.
Content of MgO >=96.5% of the highly-purity magnesite.
A kind of physical and chemical index of high intensity converter mouth castable: 1100 DEG C of heating permanent line variations≤-
0.06%, 1550 DEG C of heating permanent line variations≤- 0.10%；110 DEG C of compressive resistance≤65.6Mpa, 1110 DEG C of compressive resistances≤
48.2Mpa, 1550 DEG C of compressive resistance≤42.0Mpa；Bulk density >=3.25g/cm3。
A kind of high intensity converter mouth castable preparation method, the specific steps are as follows:
(1) raw material crushes and screens fine grinding:
It is broken into bulky grain with jaw crusher by raw materials used, then is ground into bulky grain therein with kibbler roll
Partial size is the little particle of 0~5mm；Selected part little particle is finely ground into the micro mist that partial size is 200 mesh with ball mill；Little particle presses grain
Diameter difference carries out the raw material for three kinds of partial sizes for being sieved into 0-1mm, 1-3mm, 3-5mm.
(2) ingredient: raw material is weighed by formula:
(3) it stirs: the material prepared is put into batch mixer；Mixing is uniform, is done time only not less than 12min, is then gone out
Material；
(4) it discharges.
Compared with prior art, the beneficial effects of the present invention are:
Compressive resistance of the present invention is high, meets the resistance to material requirement of converter mouth.Furnace life is greatly improved, and reduces for steel mill
Loss per ton steel reduces the consumption of resistance to material, and then reduces the exploitation to China mine, and china natural resources is made to have more permanent utilizing to send out
Exhibition.Metallurgical electric furnace materials production domesticization, instead of the high price material of external import.
Specific embodiment
Below with reference to embodiment, the present invention is further described:
The present invention will be described in detail for following embodiment.These embodiments be only to preferred embodiment of the invention into
Row description, does not limit the scope of the present invention.
A kind of high intensity converter mouth castable, raw material include 3-5mm (refer to and be less than or equal to 5mm greater than 3mm)
20-30 parts of 96.5 highly-purity magnesites (content of MgO >=96.5%), 1-3mm (refer to and are less than or equal to 3mm greater than 1mm) 96.5 highly-purity magnesites
20-30 parts, 0-1mm (refers to and is less than or equal to 1mm greater than 0mm) 20-30 parts of 96.5 highly-purity magnesite, 200 mesh (being less than 0.074mm) 96.5
20-30 parts of highly-purity magnesite, 3-4 parts of antioxidant silicon carbide, 1-2 parts of metallic aluminium powder, 1-10 parts of bonding agent anhydrous magnesium sulfate, lemon
It is 1-5 parts sour, 1-3 parts of boric acid, 1-5 parts of sodium citrate, 1-10 parts of calgon.
Raw material is marketable material in above-mentioned formula.
The above feedstock specifications such as table 1:
Table 1: raw material chemical constituent mass percentage %
| Igloss | SiO2 | Fe2O3 | Al2O3 | CaO | MgO | Cr2O3 | |
| 96.5 highly-purity magnesite 1-3mm | 0.17 | 0.99 | 0.81 | 0.11 | 1.36 | 96.56 | - |
| 96.5 highly-purity magnesite 3-5mm | 0.13 | 0.88 | 0.84 | 0.11 | 1.29 | 96.75 | - |
| 96.5 highly-purity magnesite, 200 mesh | 0.11 | 1.67 | 0.95 | 0.23 | 1.56 | 95.48 | - |
| 96.5 highly-purity magnesite 0-1mm | 0.18 | 1.01 | 0.92 | 0.13 | 1.29 | 96.47 | - |
A kind of high intensity converter mouth castable preparation method, the specific steps are as follows:
(1) raw material crushes and screens fine grinding:
To close it is raw materials used be broken into bulky grain with jaw crusher, then bulky grain therein is crushed with kibbler roll
The little particle for being 0~5mm at partial size；Selected part little particle is finely ground into the micro mist that partial size is 200 mesh with ball mill；Little particle is pressed
Partial size difference is sieved, the raw material of three kinds of partial sizes of 0-1mm, 1-3mm, 3-5mm.
(2) ingredient: raw material is weighed by formula:
(3) it stirs: the material prepared is put into batch mixer；Guarantee the uniform of mixing, done time only not less than 12min,
Then it discharges；
(4) it discharges.
After discharging, which is inspected by random samples, sampling observation execution standard is shown in Table 2；
A kind of table 2: physical and chemical index execution standard of high intensity converter mouth castable
(5) it checks and accepts and packs:
A. it checks and accepts:
The sampling of material is checked and accepted and presses YB 367-75 " refractory product is sampled, checked and accepted, keeping and transport are regular " progress；It takes at random
Sample does chemical composition analysis；
B. pack, transport, storage and quality certificate:
Packaging, transport and the storage of material are carried out by YB 367-75 " refractory product sampling, examination, keeping and transport rule ",
It must be accompanied by quality certificate that technical supervision department signs and issues when material factory, indicate supplier's title or emblem mark, demander's title, delivery
Date, contract number, standard number, name of product, the trade mark, lot number and physical and chemical index wait results to report.
Embodiment
It is a kind of high intensity converter mouth castable parts by weight of raw materials proportion be shown in Table 3:
Table 3: parts by weight of raw materials proportion
The high-intensitive converter mouth castable preparation method of embodiment 1-2, comprising the following steps:
(1) raw material crushes and screens fine grinding:
Magnesia is broken into bulky grain with jaw crusher, then bulky grain therein is ground into partial size with kibbler roll
For the little particle of 0-5mm；Selected part little particle is finely ground into the micro mist that partial size is 200 mesh with ball mill；Little particle presses partial size not
It is same to be sieved, the raw material of three kinds of partial sizes of 0-1mm, 1-3mm, 3-5mm.
(2) ingredient: raw material is weighed by formula:
(3) it stirs: the material prepared is put into batch mixer；Guarantee the uniform of mixing, done time only not less than 12min,
Then it discharges.
(4) it discharges.
After discharging, which is inspected by random samples, Examined is shown in Table 4；
Table 4: the result of embodiment 1-2 sampling observation performance indicator
(5) it checks and accepts and packs:
A. it checks and accepts:
The sampling of material is checked and accepted and presses YB 367-75 " refractory product is sampled, checked and accepted, keeping and transport are regular " progress；It takes at random
Sample does chemical composition analysis；
B. pack, transport, storage and quality certificate:
Packaging, transport and the storage of material are carried out by YB 367-75 " refractory product sampling, examination, keeping and transport rule ",
It must be accompanied by quality certificate that technical supervision department signs and issues when material factory, indicate supplier's title or emblem mark, demander's title, delivery
Date, contract number, standard number, name of product, the trade mark, lot number and physical and chemical index wait results to report.
Claims (4)
1. a kind of high intensity converter mouth castable, which is characterized in that raw material and parts by weight include: granularity 3-5mm
20-30 parts of highly-purity magnesite；Granularity is 20-30 parts of highly-purity magnesite of 1-3mm；Granularity is 20-30 parts of highly-purity magnesite of 0-1mm；
Granularity is 20-30 parts of highly-purity magnesite of 200 mesh；Antioxidant: 3-4 parts of silicon carbide；1-2 parts of metallic aluminium powder；Bonding agent: anhydrous sulphur
Sour magnesium 1-10 parts；1-5 parts of citric acid；1-3 parts of boric acid；1-5 parts of sodium citrate；1-10 parts of calgon.
2. a kind of high-intensitive converter mouth castable according to claim 1, which is characterized in that the high purity magnesium
Content of MgO >=96.5% of sand.
3. a kind of high-intensitive converter mouth castable according to claim 1, which is characterized in that the reason of castable
Change index: 1100 DEG C of heating permanent line variations≤- 0.06%, 1550 DEG C of heating permanent line variations≤- 0.10%；110 DEG C of pressure resistances
Intensity≤65.6Mpa, 1110 DEG C of compressive resistance≤48.2Mpa, 1550 DEG C of compressive resistance≤42.0Mpa；Bulk density >=
3.25g/cm3。
4. a kind of high-intensitive converter mouth castable preparation method according to claim 1, which is characterized in that tool
Steps are as follows for body:
(1) raw material crushes and screens fine grinding:
It is broken into bulky grain with jaw crusher by raw materials used, then bulky grain therein is ground into partial size with kibbler roll
For the little particle of 0~5mm；Selected part little particle is finely ground into the micro mist that partial size is 200 mesh with ball mill；Little particle presses partial size not
With the raw material for carrying out three kinds of partial sizes for being sieved into 0-1mm, 1-3mm, 3-5mm.
(2) ingredient: raw material is weighed by formula:
(3) it stirs: the material prepared is put into batch mixer；Mixing is uniform, is done time only not less than 12min, is then discharged；
(4) it discharges.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811623309.0A CN109503128A (en) | 2018-12-28 | 2018-12-28 | A kind of high intensity converter mouth castable and preparation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811623309.0A CN109503128A (en) | 2018-12-28 | 2018-12-28 | A kind of high intensity converter mouth castable and preparation method |
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| CN109503128A true CN109503128A (en) | 2019-03-22 |
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| CN201811623309.0A Pending CN109503128A (en) | 2018-12-28 | 2018-12-28 | A kind of high intensity converter mouth castable and preparation method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111747760A (en) * | 2020-05-28 | 2020-10-09 | 云南铜业股份有限公司西南铜业分公司 | Castable for converter mouth and pouring method |
| CN115650703A (en) * | 2022-11-04 | 2023-01-31 | 辽宁利尔镁质合成材料股份有限公司 | Magnesium castable and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0517208A (en) * | 1991-07-08 | 1993-01-26 | Nippon Steel Corp | Production of coarse aggregate blended magnesia-carbon refractories |
| CN105523749A (en) * | 2015-12-21 | 2016-04-27 | 江苏苏嘉集团新材料有限公司 | Magnesium boron brick and preparation method thereof |
| CN107235712A (en) * | 2017-07-18 | 2017-10-10 | 海城市中兴镁质合成材料有限公司 | A kind of RH furnace bottom of fining furnace magnesium chromium matter ramming mass and its production method |
| CN107285744A (en) * | 2017-07-18 | 2017-10-24 | 海城市中兴高档镁质砖有限公司 | A kind of ladle low carbon magnesia carbon brick and preparation method thereof |
-
2018
- 2018-12-28 CN CN201811623309.0A patent/CN109503128A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0517208A (en) * | 1991-07-08 | 1993-01-26 | Nippon Steel Corp | Production of coarse aggregate blended magnesia-carbon refractories |
| CN105523749A (en) * | 2015-12-21 | 2016-04-27 | 江苏苏嘉集团新材料有限公司 | Magnesium boron brick and preparation method thereof |
| CN107235712A (en) * | 2017-07-18 | 2017-10-10 | 海城市中兴镁质合成材料有限公司 | A kind of RH furnace bottom of fining furnace magnesium chromium matter ramming mass and its production method |
| CN107285744A (en) * | 2017-07-18 | 2017-10-24 | 海城市中兴高档镁质砖有限公司 | A kind of ladle low carbon magnesia carbon brick and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 王德永: "《洁净钢与清洁辅助原料》", 31 July 2017, 冶金工业出版社 * |
| 贾江议等: "硫酸镁对镁质浇注料性能的影响", 《河南冶金》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111747760A (en) * | 2020-05-28 | 2020-10-09 | 云南铜业股份有限公司西南铜业分公司 | Castable for converter mouth and pouring method |
| CN115650703A (en) * | 2022-11-04 | 2023-01-31 | 辽宁利尔镁质合成材料股份有限公司 | Magnesium castable and preparation method thereof |
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