CN110128152A - A kind of tundish dry material and preparation method thereof - Google Patents

A kind of tundish dry material and preparation method thereof Download PDF

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Publication number
CN110128152A
CN110128152A CN201910392487.5A CN201910392487A CN110128152A CN 110128152 A CN110128152 A CN 110128152A CN 201910392487 A CN201910392487 A CN 201910392487A CN 110128152 A CN110128152 A CN 110128152A
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CN
China
Prior art keywords
dry material
powder
tundish dry
magnesia
square iron
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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.)
Withdrawn
Application number
CN201910392487.5A
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Chinese (zh)
Inventor
王三忠
鄢长喜
高波
魏久江
曹村兵
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Tianjin Wei Run New Mstar Technology Ltd
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Tianjin Wei Run New Mstar Technology Ltd
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Priority to CN201910392487.5A priority Critical patent/CN110128152A/en
Publication of CN110128152A publication Critical patent/CN110128152A/en
Withdrawn legal-status Critical Current

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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
    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
    • 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
    • C04B2235/3205—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
    • 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
    • C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3272—Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
    • 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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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

The present invention is a kind of tundish dry material and preparation method thereof, the component including following weight percentage: magnesia, metallic silicon power, alumine powder, environmentally friendly bonding agent, CaO and square iron miberal powder.Raw material is put into strength sand mixer first when preparation and is sufficiently kneaded, then mixture is put into bulk material drying machine dry.A1 in the Ultramicro-powder and alumine of magnesia and metallic silicon in the present invention2O3, CaO micro mist generate aluminum-spinel at high temperature, improve the bulk density and corrosion-resistant property of product；Environmentally friendly bonding agent does not generate or generates less irritative gas in baking process simultaneously, has the characteristics that environmentally protective；The solid solution reaction of magnesia and square iron miberal powder when being used under last tundish dry material hot conditions, magnesium square iron miberal powder is generated in base portion, using the Volumetric expansion of solid solution reaction and the sintering activity of generated in-situ magnesium square iron miberal powder, compactness, sintering strength and the scour resistance of product are improved.

Description

A kind of tundish dry material and preparation method thereof
Technical field
The present invention relates to tundish dry material technical fields more particularly to a kind of tundish dry material and preparation method thereof.
Background technique
With the development of world steel production technology, there is tundish metallurgy concept, or metallurgical three times, tundish from Simple molten steel transition vessel is changed into the purifier with a variety of refining functions, tundish refining techniques in continuous casting system As one of the important technology in clean steel production, and form a kind of relatively independent tundish metallurgy.Therefore, refining is intermediate Bao Naicai becomes the focus of world attention.
Tundish dry material is a kind of to apply universal liner in dundish refractory material.Tundish dry material is using In the process, by molten steel and slag erosion and wash away, and refractory raw material particle in dry materials is caused to fall off, the dry type bed of material is gradually It is thinning, until cannot benefit from.Falling off for refractory raw material not only influences tundish service life in tundish dry material, influences energy conservation Emission reduction, the refractory material to fall off, which enters after molten steel such as float in time, will also form the non-metallic inclusion in steel, serious shadow Ring product quality.Therefore, tundish dry material is extremely important in continuous casting production process with refractory material service life.
Currently, also preferable low-temperature binder is thermoplastic phenolic resin to most widely used in tundish dry material and effect Rouge, but phenolic resin is solidifying, is generating the flue gas with penetrating odor in carbonization process, makes to site operation work human and environment At a degree of harm, in addition, the market price of phenolic resin is higher at present, make the production cost of tundish dry material substantially Increase.
Summary of the invention
Present invention seek to address that the deficiencies in the prior art, and a kind of tundish dry material is provided and preparation method thereof.
The present invention to achieve the above object, using following technical scheme:
A kind of tundish dry material, the component including following weight percentage: magnesia 85.4%~90%, metallic silicon power 0.5%~2%, alumine powder 0.2%~1.5%, environmentally friendly bonding agent 3%~6%, CaO2%~7%, square iron miberal powder 3%~8%.
Particularly, the magnesia and metallic silicon power are Ultramicro-powder of the granularity less than 2 μm.
Particularly, the environmentally friendly bonding agent is by the calcium sulfate containing the crystallization water, barium sulfate, ferrous sulfate, magnesium sulfate, sulphur Two kinds in sour aluminium potassium and sodium sulphate mix by weight for the ratio of 1:1.
Particularly, FeO content is not less than 95% in the square iron miberal powder, and granularity is not more than 200 mesh.
A kind of preparation method of tundish dry material, including following preparation step:
(1) it is kneaded
According to the ratio each raw material is put into strength sand mixer to be sufficiently kneaded and mixture is made, mixing time is 5~10 minutes；
(2) dry
Mixture is put into drying in bulk material drying machine, up to loose, uniform tundish dry material after drying.
The beneficial effects of the present invention are: A1 in the Ultramicro-powder and alumine of magnesia and metallic silicon in the present invention2O3, CaO it is micro- Reaction in-situ occurs at high temperature and generates phase transformation generation aluminum-spinel for powder, improves the bulk density and erosion resisting of product Energy；Environmentally friendly bonding agent novel simultaneously replaces solid phenolic resin, does not generate or generate less stimulation in baking process Property gas, has the characteristics that environmentally protective；Magnesia and square iron miberal powder consolidates when using under last tundish dry material hot conditions Molten reaction generates magnesium square iron miberal powder, Volumetric expansion and generated in-situ magnesium side using solid solution reaction in base portion The sintering activity of Iron Ore Powder improves compactness, sintering strength and the scour resistance of product.
Specific embodiment
Below with reference to embodiment, the invention will be further described:
A kind of tundish dry material, the component including following weight percentage: magnesia 85.4%~90%, metallic silicon power 0.5%~2%, alumine powder 0.2%~1.5%, environmentally friendly bonding agent 3%~6%, CaO2%~7%, square iron miberal powder 3%~8%.
Particularly, the magnesia and metallic silicon power are Ultramicro-powder of the granularity less than 2 μm.
Particularly, the environmentally friendly bonding agent is by the calcium sulfate containing the crystallization water, barium sulfate, ferrous sulfate, magnesium sulfate, sulphur Two kinds in sour aluminium potassium and sodium sulphate mix by weight for the ratio of 1:1.
Particularly, FeO content is not less than 95% in the square iron miberal powder, and granularity is not more than 200 mesh.
A kind of preparation method of tundish dry material, including following preparation step:
(1) it is kneaded
According to the ratio each raw material is put into strength sand mixer to be sufficiently kneaded and mixture is made, mixing time is 5~10 minutes；
(2) dry
Mixture is put into drying in bulk material drying machine, up to loose, uniform tundish dry material after drying.
Embodiment one
A kind of tundish dry material, the component including following weight percentage: magnesia 85.5%, metallic silicon power 1% are high Bauxite powder 1%, environmentally friendly bonding agent 6%, CaO3%, square iron miberal powder 3.5%.
Particularly, the magnesia and metallic silicon power are Ultramicro-powder of the granularity less than 2 μm.
Particularly, the ratio of the environmentally friendly bonding agent to be by the calcium sulfate containing the crystallization water and barium sulfate be by weight 1:1 Example mixes.
Particularly, FeO content is not less than 95% in the square iron miberal powder, and granularity is not more than 200 mesh.
A kind of preparation method of tundish dry material, including following preparation step:
(1) it is kneaded
According to the ratio each raw material is put into strength sand mixer to be sufficiently kneaded and mixture is made, mixing time is 5 minutes；
(2) dry
Mixture is put into drying in bulk material drying machine, up to loose, uniform tundish dry material after drying.
Embodiment two
A kind of tundish dry material, the component including following weight percentage: magnesia 90%, metallic silicon power 0.5% are high Bauxite powder 1.5%, environmentally friendly bonding agent 3%, CaO2%, square iron miberal powder 3%.
Particularly, the magnesia and metallic silicon power are Ultramicro-powder of the granularity less than 2 μm.
Particularly, it is 1:1's that the environmentally friendly bonding agent is by the ferrous sulfate containing the crystallization water and magnesium sulfate by weight Ratio mixes.
Particularly, FeO content is not less than 95% in the square iron miberal powder, and granularity is not more than 200 mesh.
A kind of preparation method of tundish dry material, including following preparation step:
(1) it is kneaded
According to the ratio each raw material is put into strength sand mixer to be sufficiently kneaded and mixture is made, mixing time is 10 minutes；
(2) dry
Mixture is put into drying in bulk material drying machine, up to loose, uniform tundish dry material after drying.
Embodiment three
A kind of tundish dry material, the component including following weight percentage: magnesia 87%, metallic silicon power 1.5% are high Bauxite powder 0.5%, environmentally friendly bonding agent 5%, CaO2%, square iron miberal powder 4%.
Particularly, the magnesia and metallic silicon power are Ultramicro-powder of the granularity less than 2 μm.
Particularly, it is 1:1's that the environmentally friendly bonding agent is by the aluminum aluminum sulfate containing the crystallization water and sodium sulphate by weight Ratio mixes.
Particularly, FeO content is not less than 95% in the square iron miberal powder, and granularity is not more than 200 mesh.
A kind of preparation method of tundish dry material, including following preparation step:
(1) it is kneaded
According to the ratio each raw material is put into strength sand mixer to be sufficiently kneaded and mixture is made, mixing time is 8 minutes；
(2) dry
Mixture is put into drying in bulk material drying machine, up to loose, uniform tundish dry material after drying.
Example IV
A kind of tundish dry material, the component including following weight percentage: magnesia 88%, metallic silicon power 1.3% are high Bauxite powder 0.7%, environmentally friendly bonding agent 4%, CaO2%, square iron miberal powder 4%.
Particularly, the magnesia and metallic silicon power are Ultramicro-powder of the granularity less than 2 μm.
Particularly, it is 1:1's that the environmentally friendly bonding agent is by the aluminum aluminum sulfate containing the crystallization water and sodium sulphate by weight Ratio mixes.
Particularly, FeO content is not less than 95% in the square iron miberal powder, and granularity is not more than 200 mesh.
A kind of preparation method of tundish dry material, including following preparation step:
(1) it is kneaded
According to the ratio each raw material is put into strength sand mixer to be sufficiently kneaded and mixture is made, mixing time is 8 minutes；
(2) dry
Mixture is put into drying in bulk material drying machine, up to loose, uniform tundish dry material after drying.
The present invention is exemplarily described above in conjunction with embodiment, it is clear that the present invention implements not by above-mentioned side The limitation of formula as long as using the various improvement that the inventive concept and technical scheme of the present invention carry out, or not improved is directly answered It is within the scope of the present invention for other occasions.

Claims (5)

1. a kind of tundish dry material, which is characterized in that the component including following weight percentage: magnesia 85.4%~ 90%, metallic silicon power 0.5%~2%, alumine powder 0.2%~1.5%, environmentally friendly bonding agent 3%~6%, CaO2%~ 7%, square iron miberal powder 3%~8%.
2. a kind of tundish dry material according to claim 1, which is characterized in that the magnesia and metallic silicon power are grain Spend the Ultramicro-powder less than 2 μm.
3. a kind of tundish dry material according to claim 1, which is characterized in that the environmental protection bonding agent is by containing knot Two kinds in the calcium sulfate of brilliant water, barium sulfate, ferrous sulfate, magnesium sulfate, aluminum aluminum sulfate and sodium sulphate are by weight the ratio for being 1:1 Example mixes.
4. a kind of tundish dry material according to claim 1, which is characterized in that FeO content is not in the square iron miberal powder Less than 95%, granularity is not more than 200 mesh.
5. a kind of preparation method of tundish dry material according to any one of claims 1 to 4, which is characterized in that including such as Lower preparation step:
(1) it is kneaded
According to the ratio each raw material is put into strength sand mixer to be sufficiently kneaded and mixture is made, mixing time is 5~10 minutes；
(2) dry
Mixture is put into drying in bulk material drying machine, up to loose, uniform tundish dry material after drying.
CN201910392487.5A 2019-05-13 2019-05-13 A kind of tundish dry material and preparation method thereof Withdrawn CN110128152A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115028435A (en) * 2021-07-12 2022-09-09 张家港市恒乐阳方高温材料有限公司 High-density tundish dry material and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103011862A (en) * 2012-12-18 2013-04-03 北京利尔高温材料股份有限公司 Environment-friendly carbon-free tundish dry material
CN108178641A (en) * 2018-01-13 2018-06-19 江苏嘉耐高温材料有限公司 A kind of tundish dry material and preparation method thereof
CN110526723A (en) * 2019-09-12 2019-12-03 通化耐博新材料股份有限公司 Environment-friendly type tundish dry material and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103011862A (en) * 2012-12-18 2013-04-03 北京利尔高温材料股份有限公司 Environment-friendly carbon-free tundish dry material
CN108178641A (en) * 2018-01-13 2018-06-19 江苏嘉耐高温材料有限公司 A kind of tundish dry material and preparation method thereof
CN110526723A (en) * 2019-09-12 2019-12-03 通化耐博新材料股份有限公司 Environment-friendly type tundish dry material and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115028435A (en) * 2021-07-12 2022-09-09 张家港市恒乐阳方高温材料有限公司 High-density tundish dry material and preparation method thereof
CN115028435B (en) * 2021-07-12 2023-10-20 张家港市恒乐阳方高温材料有限公司 High-density tundish dry material and preparation method thereof

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