CN106747342A - A kind of continuous casting tundish coating - Google Patents
A kind of continuous casting tundish coating Download PDFInfo
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- CN106747342A CN106747342A CN201611111528.1A CN201611111528A CN106747342A CN 106747342 A CN106747342 A CN 106747342A CN 201611111528 A CN201611111528 A CN 201611111528A CN 106747342 A CN106747342 A CN 106747342A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/02—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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62222—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining ceramic coatings
-
- 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
- C04B2235/38—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
- C04B2235/50—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
- C04B2235/5252—Fibers having a specific pre-form
- C04B2235/5256—Two-dimensional, e.g. woven structures
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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)
- Inorganic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Ceramic Products (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention belongs to technical field of refractory materials, it is related to a kind of continuous casting tundish coating.The tundish paint is made up of each raw material of following parts by weight：21.3 25.5 parts of the magnesia of 50 100 mesh, 26.5 32.5 parts of the magnesia of 100 150 mesh, 31.5 35.5 parts of the magnesia of 150 200 mesh, 1.5 5.5 parts of the alpha-silicon nitride powders of 800 1500 mesh, 1.5 5.5 parts of the silicon carbide powder of 1,000 1500 mesh, 0.5 1.5 parts of the brucite powder of 100 200 mesh, 1.5 2.5 parts of ceramic fiber paper, 0.2 0.6 parts of polycarboxylic acids sodium.Advantages of the present invention is that, containing silicon carbide powder and alpha-silicon nitride powders, the thermal shock resistance of two kinds of powder is preferable, can ensure that dope layer is less prone to slight crack when being baked or comes off, meanwhile, surface is smooth after silicon carbide powder is sintered conjunction with alpha-silicon nitride powders, is difficult to be moistened by molten steel.
Description
Technical field
The invention belongs to technical field of refractory materials, it is related to a kind of continuous casting tundish coating.
Background technology
Tundish be steel-making continuous casting production in molten steel intermediate store, molten steel is played shunting, insulation, remove be mingled with
Thing, sequence casting etc. are acted on.Coating quality quality is to steel product quality, the service life of tundish and work(used by bakie working lining
Energy performance plays the role of important.Therefore the requirement to bakie working lining coating is：Anti-slag erosion is good, resistance to erosion, compared with
Small bulk density, relatively low thermal conductivity factor and good insulating power, removal of inclusions ability are strong, do not pollute molten steel, construct
Simply, well easily cost is low for Wrecking property.In the production that molten steel supplies the kinds such as very sufficient building iron, particularly in water
Mouthful can under conditions of fast online replacement, it is necessary to tundish the features such as there is long service life, existing tundish is by height
The raw materials such as the magnesia prefabricated component of performance, magnesia coating and Mg-Al-Cr coating improve service life, with tundish metallurgy skill
The ratio of the development of art, high-quality steel and special steel increases, by the production restriction of the variety variations and the same steel of casting for pouring cast steel
Cause the service life to tundish less demanding, but tundish is proposed by molten steel moistening and heat-insulating property aspect new
It is required that.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of continuous casting tundish coating, and it is not moistened and be incubated by molten steel
Performance is good.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：A kind of continuous casting tundish coating, it is by following weight
Each raw material composition of number：Magnesia 21.3-25.5 parts of 50-100 mesh, magnesia 26.5-32.5 parts of 100-150 mesh, 150-200
Alpha-silicon nitride powders 1.5-5.5 parts of 31.5-35.5 parts of purpose magnesia, 800-1500 mesh, the silicon carbide powder of 1000-1500 mesh
1.5-5.5 parts, brucite powder 0.5-1.5 parts of 100-200 mesh, ceramic fiber paper 1.5-2.5 parts, 0.2-0.6 parts of polycarboxylic acids sodium.
On the basis of above-mentioned technical proposal, the present invention can also have following further specifically chosen or optimum choice.
Preferably, it is made up of each raw material of following parts by weight：23.5 parts of the magnesia of 50-100 mesh, the magnesium of 100-150 mesh
30.5 parts of sand, 33.5 parts of the magnesia of 150-200 mesh, 3.5 parts of the alpha-silicon nitride powders of 800-1500 mesh, the carbonization of 1000-1500 mesh
2.5 parts of Si powder, 0.8 part of the brucite powder of 100-200 mesh, 2.1 parts of ceramic fiber paper, 0.5 part of polycarboxylic acids sodium.
Specifically, the alpha-silicon nitride powders are high purity silicon nitride, wherein the content of α phase silicon nitrides is more than 92.5%.Nitrogen
SiClx is a kind of high grade refractory, its sinter with carborundum after thermal shock resistance is good and sintering conjunction after surface it is smooth be difficult by
Molten steel is moistened.
Specifically, the silicon carbide powder is black silicon carbide micro mist, its particle diameter is 1200-1500 mesh.
Specifically, the magnesia is highly-purity magnesite, wherein content of magnesia is more than 98%.
Compared with prior art, the beneficial effects of the invention are as follows：Contain silicon carbide powder and silicon nitride in its constitutive material
Powder, the thermal shock resistance of two kinds of powder is preferable, it is ensured that dope layer is less prone to slight crack when being baked or comes off, together
When, surface is smooth after silicon carbide powder is sintered conjunction with alpha-silicon nitride powders, is difficult to be moistened by molten steel；Draw first in its constitutive material
Enter ceramic fiber paper component, it has high-flexibility and heat shock resistance, while its thermal conductivity is extremely low, advantageously reduce whole painting
The thermal conductivity of the bed of material, to reach preferable heat insulation effect.
Specific embodiment
Principle of the invention and feature are described below in conjunction with specific embodiment, example is served only for explaining this hair
It is bright, it is not intended to limit the scope of the present invention.
In the following embodiments of the present invention using to raw material be commercially available prod.
Embodiment 1
A kind of continuous casting tundish coating, it is made up of each raw material of following parts by weight：
23.5 parts of the magnesia of 50-100 mesh, 30.5 parts of the magnesia of 100-150 mesh, 33.5 parts of the magnesia of 150-200 mesh, 800-
3.5 parts of the alpha-silicon nitride powders (content of α phase silicon nitrides is more than 92.5%) of 1500 mesh, the silicon carbide powder of 1000-1500 mesh
2.5 parts, 0.8 part of the brucite powder of 100-200 mesh, 2.1 parts of ceramic fiber paper, 0.5 part of polycarboxylic acids sodium.
Embodiment 2
A kind of continuous casting tundish coating, it is made up of each raw material of following parts by weight：
21.3 parts of the magnesia of 50-100 mesh, 26.5 parts of the magnesia of 100-150 mesh, 31.5 parts of the magnesia of 150-200 mesh, 800-
1.5 parts of the alpha-silicon nitride powders (content of α phase silicon nitrides is more than 92.5%) of 1500 mesh, the silicon carbide powder of 1000-1500 mesh
1.5 parts, 0.5 part of the brucite powder of 100-200 mesh, 1.5 parts of ceramic fiber paper, 0.2 part of polycarboxylic acids sodium.
Embodiment 3
A kind of continuous casting tundish coating, it is made up of each raw material of following parts by weight：
25.5 parts of the magnesia of 50-100 mesh, 32.5 parts of the magnesia of 100-150 mesh, 35.5 parts of the magnesia of 150-200 mesh, 800-
5.5 parts of the alpha-silicon nitride powders (content of α phase silicon nitrides is more than 92.5%) of 1500 mesh, the silicon carbide powder of 1000-1500 mesh
5.5 parts, 1.5 parts of the brucite powder of 100-200 mesh, 2.5 parts of ceramic fiber paper, 0.6 part of polycarboxylic acids sodium.
Embodiment 4
A kind of continuous casting tundish coating, it is made up of each raw material of following parts by weight：
21.5 parts of the magnesia of 50-100 mesh, 32.5 parts of the magnesia of 100-150 mesh, 31.5 parts of the magnesia of 150-200 mesh, 800-
1.5 parts of the alpha-silicon nitride powders (content of α phase silicon nitrides is more than 92.5%) of 1500 mesh, the black silicon carbide of 1200-1500 mesh is micro-
5.5 parts of powder, 0.8 part of the brucite powder of 100-200 mesh, 2.1 parts of ceramic fiber paper, 0.5 part of polycarboxylic acids sodium.
Embodiment 5
A kind of continuous casting tundish coating, it is made up of each raw material of following parts by weight：
25.5 parts of the magnesia of 50-100 mesh, 32.5 parts of the magnesia of 100-150 mesh, 31.5 parts of the magnesia of 150-200 mesh, 800-
1.5 parts of the alpha-silicon nitride powders of 1500 mesh, 1.5 parts of the black silicon carbide micro mist of 1200-1500 mesh, the brucite powder 1.5 of 100-200 mesh
Part, 2.5 parts of ceramic fiber paper, 0.3 part of polycarboxylic acids sodium.
Comparative example 1
Compared with Example 1, alpha-silicon nitride powders are only not added with the coating of comparative example 1.
Comparative example 2
Compared with Example 1, only it is not added with silicon carbide powder in the coating of comparative example 2.
Comparative example 3
Compared with Example 1, only it is not added with ceramic fiber paper in the coating of comparative example 3.
Comparative example 4
Compared with Example 1, brucite powder and polycarboxylic acids sodium are only not added with the coating of comparative example 4.
The tundish paint that above-described embodiment 1 to 5 is produced is tried out on 55 tons of tundish of continuous casting respectively, result on trial
For：Gained coating is good with wettability, tack is good；It is flawless and come off during baking；Molten steel and tundish without adhesion attachment,
Tundish is not moistened by molten steel；Compared to the tundish using traditional coating, its good heat insulating, energy consumption is obviously reduced.Meanwhile,
Comparative example 1 without alpha-silicon nitride powders and the comparative example without silicon carbide powder 2 occur slight crack, and phase once in a while in baking
The centre answered is surrounded by the phenomenon slightly moistened by molten steel；The corresponding tundish of coating of the comparative example 3 without ceramic fiber paper
Heat insulation effect is compared with the heat insulation effect of the corresponding tundish of the coating of embodiment 1 to 5, hence it is evident that be deteriorated；Without brucite powder and
The coating of the comparative example 4 of polycarboxylic acids sodium its poor dispersion in water in spraying, effect is deteriorated during spraying.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all it is of the invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (5)
1. a kind of continuous casting tundish coating, it is characterised in that be made up of each raw material of following parts by weight：The magnesia of 50-100 mesh
21.3-25.5 parts, magnesia 26.5-32.5 parts of 100-150 mesh, magnesia 31.5-35.5 parts of 150-200 mesh, 800-1500 mesh
Alpha-silicon nitride powders 1.5-5.5 parts, silicon carbide powder 1.5-5.5 parts, the brucite powder of 100-200 mesh of 1000-1500 mesh
0.5-1.5 parts, ceramic fiber paper 1.5-2.5 parts, 0.2-0.6 parts of polycarboxylic acids sodium.
2. a kind of continuous casting tundish coating according to claim 1, it is characterised in that by each raw material of following parts by weight
Composition：23.5 parts of the magnesia of 50-100 mesh, 30.5 parts of the magnesia of 100-150 mesh, 33.5 parts of the magnesia of 150-200 mesh, 800-
3.5 parts of the alpha-silicon nitride powders of 1500 mesh, 2.5 parts of the silicon carbide powder of 1000-1500 mesh, the brucite powder 0.8 of 100-200 mesh
Part, 2.1 parts of ceramic fiber paper, 0.5 part of polycarboxylic acids sodium.
3. a kind of side according to claim 1 casts tundish paint, it is characterised in that the alpha-silicon nitride powders are High Purity Nitrogen
SiClx, wherein the content of α phase silicon nitrides is more than 92.5%.
4. a kind of side according to claim 1 casts tundish paint, it is characterised in that the silicon carbide powder is black carbonization
Silicon powder, its particle diameter is 1200-1500 mesh.
5. a kind of continuous casting tundish coating according to any one of Claims 1-4, it is characterised in that the magnesia is height
Pure magnesia, wherein content of magnesia is more than 98%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611111528.1A CN106747342A (en) | 2016-12-06 | 2016-12-06 | A kind of continuous casting tundish coating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611111528.1A CN106747342A (en) | 2016-12-06 | 2016-12-06 | A kind of continuous casting tundish coating |
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| Publication Number | Publication Date |
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| CN106747342A true CN106747342A (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611111528.1A Pending CN106747342A (en) | 2016-12-06 | 2016-12-06 | A kind of continuous casting tundish coating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109467413A (en) * | 2018-12-14 | 2019-03-15 | 浙江红鹰集团股份有限公司 | Continuous casting production no paper fibers magnesia coating and preparation method thereof |
Citations (5)
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|---|---|---|---|---|
| CN101012121A (en) * | 2007-01-26 | 2007-08-08 | 牟元全 | Abrasion resistant ceramic coating |
| CN102775175A (en) * | 2012-08-27 | 2012-11-14 | 武汉钢铁(集团)公司 | Magnesium paint for continuous steel casting tundish |
| CN103833394A (en) * | 2014-01-08 | 2014-06-04 | 长兴明晟冶金炉料有限公司 | Tundish coating |
| CN105198461A (en) * | 2015-10-14 | 2015-12-30 | 武汉科技大学 | Continuous casting tundish paint and preparation method thereof |
| CN106007678A (en) * | 2016-05-18 | 2016-10-12 | 南京可赛新新型材料有限公司 | Ceramic coating with high-temperature resistance and wear resistance and preparation method of ceramic coating |
-
2016
- 2016-12-06 CN CN201611111528.1A patent/CN106747342A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101012121A (en) * | 2007-01-26 | 2007-08-08 | 牟元全 | Abrasion resistant ceramic coating |
| CN102775175A (en) * | 2012-08-27 | 2012-11-14 | 武汉钢铁(集团)公司 | Magnesium paint for continuous steel casting tundish |
| CN103833394A (en) * | 2014-01-08 | 2014-06-04 | 长兴明晟冶金炉料有限公司 | Tundish coating |
| CN105198461A (en) * | 2015-10-14 | 2015-12-30 | 武汉科技大学 | Continuous casting tundish paint and preparation method thereof |
| CN106007678A (en) * | 2016-05-18 | 2016-10-12 | 南京可赛新新型材料有限公司 | Ceramic coating with high-temperature resistance and wear resistance and preparation method of ceramic coating |
Non-Patent Citations (2)
| Title |
|---|
| 沙力争等: "《纸加工技术》", 28 February 2009, 中国轻工业出版社 * |
| 陈照峰等: "《无机非金属材料学》", 29 February 2016, 西北工业大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109467413A (en) * | 2018-12-14 | 2019-03-15 | 浙江红鹰集团股份有限公司 | Continuous casting production no paper fibers magnesia coating and preparation method thereof |
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Application publication date: 20170531 |