CN100354228C - Novel zirconium metering nozzle for tundish - Google Patents
Novel zirconium metering nozzle for tundish Download PDFInfo
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- CN100354228C CN100354228C CNB2006100464336A CN200610046433A CN100354228C CN 100354228 C CN100354228 C CN 100354228C CN B2006100464336 A CNB2006100464336 A CN B2006100464336A CN 200610046433 A CN200610046433 A CN 200610046433A CN 100354228 C CN100354228 C CN 100354228C
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- brick
- overcoat
- zirconium
- mullite
- tundish
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Abstract
The present invention relates to a tundish metering nozzle (a functional refractory product) for continuous casting, which is composed of zirconium core bricks and housing bricks, wherein the raw materials of the zirconium core bricks are prepared from zircon sand, zirconium dioxide powder of 200 mesh, and 70% starch gum solution as binding agents according to a certain weight proportion; the raw materials of the housing bricks are prepared form mullite granules, fine mullite powder, N330 type black carbon, super-fine alumina powder of 200 mesh, and binding agents according to a certain weight proportion. The present invention has the advantages of scouring resistance, corrosion resistance, long service life, stable pulling rate, good steel billet finish and high purity.
Description
Technical field
The present invention relates to the functional refractory product of a kind of continuous casting---tundish metering nozzle.
Background technology
The tundish metering nozzle is positioned at the tundish bottom, joins with submerged nozzle below, and suitable for reading and stopper joins, and the outside is with the tundish brick cup.During use, by cooperatively interacting of the mouth of a river up and down, control molten steel flow speed,, stablize pulling rate, make steel billet consummate smooth, reach the purpose of raising billet quality.Along with rapid development of national economy, the domestic iron and steel enterprises continuous casting line even waters number of times and improves year by year, original tundish metering nozzle technology day show to fall behind, can not in time adapt to after steel mill's technological transformation high connect to water reduce cost, enlarge output, improve the quality and the requirement of security.
Summary of the invention
The object of the present invention is to provide a kind ofly anti-ly wash away, anti-erosion, long service life, the tundish metering nozzle that function is more superior.
The object of the present invention is achieved like this:
A kind of tundish metering nozzle is made up of four parts, is divided into zirconium core brick, overcoat brick, clay, box hat.Zirconium core brick is embedded in the overcoat brick, and both are adhesively fixed by clay in the slit, and the outside specified location of overcoat brick is wrapped box hat fire prevention explosion.
A kind of tundish metering nozzle is assembled by zirconium core brick and overcoat brick, it is characterized in that:
Zirconium core brick raw material is formed by following weight part proportioning in the tundish metering nozzle:
Zircon sand: 80～85 parts, wherein grain diameter is that the zircon sand of 1-2mm and the part by weight of the zircon sand that grain diameter is 0-1mm are 1: 1;
200 purpose zirconia powders: 15-20 part
Wedding agent: 70% dextrin solution 6-8 part
Overcoat brick raw material is formed by following weight part proportioning:
Mullite particle: 40-60 part, wherein grain diameter is that the mullite of 0-1mm and the part by weight of the mullite that grain diameter is 1-3mm are 2: 3;
200 order mullite fine powders: 20-30 part
N330 type carbon black: 10～15 parts
5～10 parts of high grade bauxite 200 order fine powders
Wedding agent: thermosetting resin 6-8 part.
Above-mentioned tundish metering nozzle manufacturing process comprises the manufacturing process of zirconium core brick and the manufacturing process of overcoat brick:
(1) manufacturing process of zirconium core brick:
1) premix: zircon sand particle in the above-mentioned raw materials is mixed by described proportioning, stir;
2) mixing: earlier the particulate material of premix is added wedding agent 70% concentration dextrin solution by described weight part proportioning and stir, it is mixing to add the continuation of zirconium white powder 200 order fine powders in described weight part ratio then, evenly agglomerating until grog;
3) moulding: mixing back grog is good by the weighing of every zirconium core brick fixed weight, pour extrusion molding under 200 tons of pressure in the mold into;
4) burn till: the zirconium core brick after the moulding is put into the high temperature kiln, and 1750 ℃ are burnt till.
(2) manufacturing process of overcoat brick:
1) premix: mullite particle in the above-mentioned raw materials is mixed by described proportioning, stir;
2) mixing: as earlier the particulate material of premix to be added the wedding agent thermosetting resin by described weight part proportioning and stir, then in described weight part ratio add porzite powder 200 order fine powders, N330 type carbon black, high grade bauxite 200 order fine powders continue mixing, evenly agglomerating until grog;
3) moulding: mixing back grog is good by the weighing of every overcoat brick fixed weight, pour extrusion molding under 600 tons of pressure in the mold into;
4) burn till: the overcoat brick after the moulding is put into the high temperature kiln, and 1000 ℃ are burnt till.
(3) assembling:
1) assembling; Inlay and into burn till in the later finished product overcoat brick burning till later finished product zirconium core brick, both slits are adhesively fixed by clay and seal.
2) oven dry: the tundish zirconium matter metering nozzle that assembles is transported in the drying baker 200 ℃ of oven dry clay.
3) welding: the outside specified location of overcoat brick is wrapped fire prevention explosion box hat, and the seam crossing welding is complete.
Advantage of the present invention is:
1) high temperature that can bear high-temperature molten steel (1550～1650 ℃) washes away, and good erosion resistance is arranged, and connects to water to reach more than 35 stoves; protection reaches more than 22 hours the duration of pouring; reach the unlimited duration of pouring more than 12 hours, the aperture melting loss is less than 1mm, and the material metamorphic layer is less than 3mm.
2) thermal shock resistance is good, and is non-microcracked in tundish preheating and casting process, uses the no cold conditions line in back.
3) hot strength height can bear in the casting process stopper to the bump of metering nozzle.
4) pulling rate is stable, and steel billet smooth finish is good, the purity essence.
5) apparent size is accurate, and is easy for installation.
6) be applicable to all steel kind.
Embodiment
Embodiment 1:
A kind of tundish metering nozzle is assembled by zirconium core brick and overcoat brick, and wherein zirconium core brick raw material is formed by following weight part proportioning:
Zircon sand: 80 parts, wherein grain diameter is that the zircon sand of 1-2mm and the part by weight of the zircon sand that grain diameter is 0-1mm are 1: 1;
200 purpose zirconia powders: 15 parts
Wedding agent: 6 parts of 70% dextrin solutions
Overcoat brick raw material is formed by following weight part proportioning:
Mullite particle: 40 parts, wherein grain diameter is that the mullite of 0-1mm and the part by weight of the mullite that grain diameter is 1-3mm are 2: 3;
200 order mullite fine powders: 20 parts
N330 type carbon black: 10 parts
5 parts of high grade bauxite 200 order fine powders
Wedding agent: 6 parts of thermosetting resins.
Above-mentioned tundish metering nozzle manufacturing process comprises the manufacturing process of zirconium core brick and the manufacturing process of overcoat brick:
(1) manufacturing process of zirconium core brick:
1) premix: zircon sand particle in the above-mentioned raw materials is mixed by described proportioning, stir;
2) mixing: earlier the particulate material of premix is added wedding agent 70% concentration dextrin solution by described weight part proportioning and stir, it is mixing to add the continuation of zirconium white powder 200 order fine powders in described weight part ratio then, evenly agglomerating until grog;
3) moulding: mixing back grog is good by the weighing of every zirconium core brick fixed weight, pour extrusion molding under 200 tons of pressure in the mold into;
4) burn till: the zirconium core brick after the moulding is put into the high temperature kiln, and 1750 ℃ are burnt till.
(2) manufacturing process of overcoat brick:
1) premix: mullite particle in the above-mentioned raw materials is mixed by described proportioning, stir;
2) mixing: as earlier the particulate material of premix to be added the wedding agent thermosetting resin by described weight part proportioning and stir, then in described weight part ratio add porzite powder 200 order fine powders, N330 type carbon black, high grade bauxite 200 order fine powders continue mixing, evenly agglomerating until grog;
3) moulding: mixing back grog is good by the weighing of every overcoat brick fixed weight, pour extrusion molding under 600 tons of pressure in the mold into;
4) burn till: the overcoat brick after the moulding is put into the high temperature kiln, and 1000 ℃ are burnt till.
(3) assembling:
1) assembling; Inlay and into burn till in the later finished product overcoat brick burning till later finished product zirconium core brick, both slits are adhesively fixed by clay and seal.
2) oven dry: the tundish zirconium matter metering nozzle that assembles is transported in the drying baker 200 ℃ of oven dry clay.
3) welding: the outside specified location of overcoat brick is wrapped fire prevention explosion box hat, and the seam crossing welding is complete.
Embodiment 2:
A kind of tundish metering nozzle is assembled by zirconium core brick and overcoat brick, and zirconium core brick raw material is formed by following weight part proportioning:
Zircon sand: 85 parts, wherein grain diameter is that the zircon sand of 1-2mm and the part by weight of the zircon sand that grain diameter is 0-1mm are 1: 1;
200 purpose zirconia powders: 20 parts
Wedding agent: 8 parts of 70% dextrin solutions
Overcoat brick raw material is formed by following weight part proportioning:
Mullite particle: 60 parts, wherein grain diameter is that the mullite of 0-1mm and the part by weight of the mullite that grain diameter is 1-3mm are 2: 3;
200 order mullite fine powders: 30 parts
N330 type carbon black: 15 parts
10 parts of high grade bauxite 200 order fine powders
Wedding agent: 8 parts of thermosetting resins.
Above-mentioned tundish metering nozzle manufacturing process is with embodiment 1.
Claims (2)
1, tundish metering nozzle is assembled by zirconium core brick and overcoat brick, it is characterized in that:
Zirconium core brick raw material is formed by following weight part proportioning in the tundish metering nozzle:
Zircon sand: 80～85 parts, wherein grain diameter is that the zircon sand of 1-2mm and the part by weight of the zircon sand that grain diameter is 0-1mm are 1: 1;
200 purpose zirconia powders: 15-20 part
Wedding agent: 70% dextrin solution 6-8 part
Overcoat brick raw material is formed by following weight part proportioning:
Mullite particle: 40-60 part, wherein grain diameter is that the mullite of 0-1mm and the part by weight of the mullite that grain diameter is 1-3mm are 2: 3;
200 order mullite fine powders: 20-30 part
N330 type carbon black: 10～15 parts
5～10 parts of high grade bauxite 200 order fine powders
Wedding agent: thermosetting resin 6-8 part.
2, above-mentioned tundish metering nozzle manufacturing process according to claim 1 comprises the manufacturing process of zirconium core brick and the manufacturing process of overcoat brick, is made by following step:
(1) manufacturing process of zirconium core brick:
1) premix: zircon sand particle in the above-mentioned raw materials is mixed by described proportioning, stir;
2) mixing: earlier the particulate material of premix is added wedding agent 70% concentration dextrin solution by described weight part proportioning and stir, it is mixing to add the continuation of zirconium white powder 200 order fine powders in described weight part ratio then, evenly agglomerating until grog;
3) moulding: mixing back grog is good by the weighing of every zirconium core brick fixed weight, pour extrusion molding under 200 tons of pressure in the mold into;
4) burn till: the zirconium core brick after the moulding is put into the high temperature kiln, and 1750 ℃ are burnt till;
(2) manufacturing process of overcoat brick:
1) premix: mullite particle in the above-mentioned raw materials is mixed by described proportioning, stir;
2) mixing: as earlier the particulate material of premix to be added the wedding agent thermosetting resin by described weight part proportioning and stir, then in described weight part ratio add porzite powder 200 order fine powders, N330 type carbon black, high grade bauxite 200 order fine powders continue mixing, evenly agglomerating until grog;
3) moulding: mixing back grog is good by the weighing of every overcoat brick fixed weight, pour extrusion molding under 600 tons of pressure in the mold into;
4) burn till: the overcoat brick after the moulding is put into the high temperature kiln, and 1000 ℃ are burnt till;
(3) assembling:
1) assembling; Inlay and into burn till in the later finished product overcoat brick burning till later finished product zirconium core brick, both slits are adhesively fixed by clay and seal;
2) oven dry: the tundish zirconium matter metering nozzle that assembles is transported in the drying baker 200 ℃ of oven dry clay;
3) welding: the outside specified location of overcoat brick is wrapped fire prevention explosion box hat, and the seam crossing welding is complete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100464336A CN100354228C (en) | 2006-04-27 | 2006-04-27 | Novel zirconium metering nozzle for tundish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100464336A CN100354228C (en) | 2006-04-27 | 2006-04-27 | Novel zirconium metering nozzle for tundish |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1844047A CN1844047A (en) | 2006-10-11 |
| CN100354228C true CN100354228C (en) | 2007-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100464336A Expired - Fee Related CN100354228C (en) | 2006-04-27 | 2006-04-27 | Novel zirconium metering nozzle for tundish |
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| Country | Link |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249704B (en) * | 2011-04-22 | 2013-11-13 | 浙江省长兴铁狮耐火材料有限公司 | Zirconia metering nozzle manufacturing method |
| CN115959920A (en) * | 2023-02-08 | 2023-04-14 | 江苏泰瑞耐火有限公司 | Toughened zirconia ceramic tundish nozzle for continuous casting of square and round billets and production process thereof |
| CN116199509A (en) * | 2023-02-08 | 2023-06-02 | 江苏泰瑞耐火有限公司 | Toughened zirconia ceramic tundish nozzle for continuous casting of slabs, large square billets and rectangular billets and production process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102743A (en) * | 1985-04-10 | 1986-10-08 | 冶金部洛阳耐火材料研究所 | The direct compound metering nozzle of vibration moulding |
| CN1112909A (en) * | 1995-03-13 | 1995-12-06 | 无锡市南方耐火材料厂 | Refractory for continuous casting and immersion type riser |
-
2006
- 2006-04-27 CN CNB2006100464336A patent/CN100354228C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102743A (en) * | 1985-04-10 | 1986-10-08 | 冶金部洛阳耐火材料研究所 | The direct compound metering nozzle of vibration moulding |
| CN1112909A (en) * | 1995-03-13 | 1995-12-06 | 无锡市南方耐火材料厂 | Refractory for continuous casting and immersion type riser |
Non-Patent Citations (1)
| Title |
|---|
| 连铸用高强度复合定径水口的研制 李顺禄.陶瓷学报，第23卷第2期 2002 * |
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| CN1844047A (en) | 2006-10-11 |
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Owner name: ANSHAN CITY YUNLU FIRERESISTING MATERIALS CO., LTD Free format text: FORMER NAME OR ADDRESS: ANSHAN YUNLU REFRACTORY MATERIALS FACTORY |
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Address after: 114011, C1-3-6, Da Xi Street, Tiexi District, Liaoning, Anshan Patentee after: Anshan City Yunlu Refractory Materials Factory Address before: 114011, C1-3-6, Da Xi Street, Tiexi District, Liaoning, Anshan Patentee before: Yunlu Refractory materials factory, Anshan |
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Granted publication date: 20071212 Termination date: 20120427 |