CN102898152B - Carbon-free integral stopper rod body - Google Patents
Carbon-free integral stopper rod body Download PDFInfo
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- CN102898152B CN102898152B CN201110217390.4A CN201110217390A CN102898152B CN 102898152 B CN102898152 B CN 102898152B CN 201110217390 A CN201110217390 A CN 201110217390A CN 102898152 B CN102898152 B CN 102898152B
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- carbon
- stopper rod
- particle
- barred body
- andaluzite
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- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention relates to a carbon-free integral stopper rod body, which comprises the following components, by mass, 12-15% of high bauxite particles with a particle size of 1-3 mm, 21-24% of andalusite particles with a particle size of 1-3 mm, 8-10% of high bauxite particles with a particle size of not more than 1 mm, 22-24% of andalusite particles with a particle size of not more than 1 mm, 10-12% of high bauxite particles with a particle size of not more than 325 mesh, 20-22% of andalusite particles with a particle size of not more than 325 mesh, and 4-6% of a binding agent. The prepared carbon-free integral stopper rod body has excellent thermal shock resistance, and is particularly suitable for continuous casting processes of low carbon steel and ultra clean steel.
Description
Technical field
The present invention relates to Refractory For Steelmaking technical field, particularly a kind of carbon-free integral stopper rod barred body.
Background technology
Integral stopper rod is for the disposable functional refractory of smelter continuous casting, uses stopper to control the molten steel flow that enters crystallizer from middle packet flow, reaches the object of uninterrupted casting.
Existing integral stopper rod, have the material integral stopper rod such as aluminium carbonaceous, zirconium carbonaceous and magnesium carbonaceous, because the working face of stopper is caput, and barred body is non-working surface, so do not affecting under the prerequisite of stopper serviceability, reducing the barred body cost Shi Ge integral stopper rod manufacturer problem demanding prompt solution of stopper.
Prior art is in order to address this problem, it is main component that barred body has adopted fused brown corundum, and in the barred body composition of stopper, the content of fused brown corundum is up to 70% left and right, and fused brown corundum adopts electric smelting mode to produce, its price is relatively high, has caused equally the increase of stopper manufacture and use cost, caused unnecessary waste, and the thermal shock resistance of fused brown corundum is poor, in the Working environment of stopper harshness, easily cause stopper to peel off, work-ing life is shorter.
Summary of the invention
The object of the present invention is to provide a kind of carbon-free integral stopper rod barred body, solve the problem existing in above-mentioned current integral stopper rod barred body material, selecting alumine and andaluzite is that main raw material is prepared carbon-free stopper barred body, thereby has avoided well the problem of oxidation because adopting carbonaceous material to produce.
For achieving the above object, technical scheme of the present invention is:
A kind of carbon-free integral stopper rod barred body, its composition quality per-cent is: granularity 1～3mm alumine particle 12～15%, granularity 1～3mm andaluzite particle 21～24%, granularity is not more than 1mm alumine particle 8～10%, granularity is not more than 1mm andaluzite particle 22～24%, and granularity is not more than 325 height of eye bauxitic clay powder 10～12%, and granularity is not more than 325 order andaluzite powder 20～22%, bonding agent is additional 4～6%, and its addition is for by the percentage composition of aforementioned composition total.
Further, Al in described alumine
2o
3quality percentage composition is not less than 80%.
Al in described andaluzite
2o
3quality percentage composition is not less than 52%.
Described bonding agent is yellow starch gum or xylogen.
After carbon-free integral stopper rod barred body and caput compression moulding, need to burn till through 1450～1500 ℃ of high temperature.
The carbon-free integral stopper rod barred body that adopts the present invention to prepare has excellent anti-thermal shock stability, is particularly suitable for the casting process of soft steel and ultra clean steel.
The invention has the beneficial effects as follows:
The present invention introduces andaluzite as raw material, can increase substantially the heat-shock resistance of carbon-free integral stopper rod, the heat-shock resistance of the stopper further improving by grain composition and design of components, avoided the problem of oxidation because adopting carbonaceous material to produce simultaneously, reduce the pollution to molten steel recarburization, be particularly suitable for the casting process of soft steel and ultra clean steel.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.
Embodiment 1
Raw material and quality percentage composition that in the present embodiment, carbon-free stopper barred body adopts are 1～3mm alumine particle 12%, 1～3mm andaluzite particle 24%, be not more than 1mm alumine particle 8%, be not more than 1mm andaluzite particle 24%, be not more than 325 height of eye bauxitic clay powder 10%, be not more than 325 order andaluzite powder 22%, add bonding agent yellow starch gum 4%.After the carbon-free integral stopper rod barred body of preparing in the present embodiment and caput compression moulding, need to burn till through 1450 ℃.
Embodiment 2
Raw material and quality percentage composition that in the present embodiment, carbon-free stopper barred body adopts are 1～3mm alumine particle 15%, 1～3mm andaluzite particle 21%, be not more than 1mm alumine particle 10%, be not more than 1mm andaluzite particle 22%, be not more than 325 height of eye bauxitic clay powder 12%, be not more than 325 order andaluzite powder 20%, add bonding agent xylogen 6%.After the carbon-free integral stopper rod barred body of preparing in the present embodiment and caput compression moulding, need to burn till through 1500 ℃.
Embodiment 3
Raw material and quality percentage composition that in the present embodiment, carbon-free stopper barred body adopts are 1～3mm alumine particle 13%, 1～3mm andaluzite particle 23%, be not more than 1mm alumine particle 9%, be not more than 1mm andaluzite particle 23%, be not more than 325 height of eye bauxitic clay powder 11%, be not more than 325 order andaluzite powder 21%, add bonding agent xylogen 5%.After the carbon-free integral stopper rod barred body of preparing in the present embodiment and caput compression moulding, need to burn till through 1460 ℃.
Embodiment 4
Raw material and quality percentage composition that in the present embodiment, carbon-free stopper barred body adopts are 1～3mm alumine particle 14%, 1～3mm andaluzite particle 22%, be not more than 1mm alumine particle 10%, be not more than 1mm andaluzite particle 22%, be not more than 325 height of eye bauxitic clay powder 12%, be not more than 325 order andaluzite powder 20%, add bonding agent xylogen 5%.After the carbon-free integral stopper rod barred body of preparing in the present embodiment and caput compression moulding, need to burn till through 1480 ℃.
Embodiment 5
Raw material and quality percentage composition that in the present embodiment, carbon-free stopper barred body adopts are 1～3mm alumine particle 15%, 1～3mm andaluzite particle 21%, be not more than 1mm alumine particle 9%, be not more than 1mm andaluzite particle 23%, be not more than 325 height of eye bauxitic clay powder 10%, be not more than 325 order andaluzite powder 22%, add bonding agent xylogen 5%.After the carbon-free integral stopper rod barred body of preparing in the present embodiment and caput compression moulding, need to burn till through 1490 ℃.
Table 1 unit: mass percent
Carbon-free integral stopper rod barred body prepared by the present invention has excellent heat-shock resistance, avoided the problem of oxidation because adopting carbonaceous material to produce, reduced the pollution to molten steel recarburization, improved the corrosion resistance of stopper, reduce the risk that produces inclusion in steel billet, can also effectively reduce the generation of stopper and nozzle clogging phenomenon, be applicable to the continuous pouring of ultra low-carbon steel, and cost is relatively low, there is good promotion prospect.
Claims (4)
1. a carbon-free integral stopper rod barred body, its composition quality per-cent is:
Granularity 1～3mm alumine particle 12～15%,
Granularity 1～3mm andaluzite particle 21～24%,
Granularity is not more than 1mm alumine particle 8～10%,
Granularity is not more than 1mm andaluzite particle 22～24%,
Granularity is not more than 325 height of eye bauxitic clay powder 10～12%,
Granularity is not more than 325 order andaluzite powder 20～22%,
Bonding agent additional 4～6%.
2. carbon-free integral stopper rod barred body as claimed in claim 1, is characterized in that Al in described alumine
2o
3quality percentage composition is not less than 80%.
3. carbon-free integral stopper rod barred body as claimed in claim 1, is characterized in that Al in described andaluzite
2o
3quality percentage composition is not less than 52%.
4. carbon-free integral stopper rod barred body as claimed in claim 1, is characterized in that, described bonding agent is yellow starch gum or xylogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110217390.4A CN102898152B (en) | 2011-07-29 | 2011-07-29 | Carbon-free integral stopper rod body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110217390.4A CN102898152B (en) | 2011-07-29 | 2011-07-29 | Carbon-free integral stopper rod body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102898152A CN102898152A (en) | 2013-01-30 |
| CN102898152B true CN102898152B (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110217390.4A Active CN102898152B (en) | 2011-07-29 | 2011-07-29 | Carbon-free integral stopper rod body |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106588049B (en) * | 2016-12-15 | 2020-06-09 | 王世泰 | Silicon-free carbon-free corundum nozzle stopper rod product for continuous casting and preparation process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1210098A (en) * | 1998-08-25 | 1999-03-10 | 李博文 | Self-strengthening refractory casting material and production thereof |
| CN101417883A (en) * | 2008-11-11 | 2009-04-29 | 阳泉市下千耐火材料有限公司 | Bauxite base slight expansion high-alumina brick for ladle and method for producing the same |
-
2011
- 2011-07-29 CN CN201110217390.4A patent/CN102898152B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1210098A (en) * | 1998-08-25 | 1999-03-10 | 李博文 | Self-strengthening refractory casting material and production thereof |
| CN101417883A (en) * | 2008-11-11 | 2009-04-29 | 阳泉市下千耐火材料有限公司 | Bauxite base slight expansion high-alumina brick for ladle and method for producing the same |
Non-Patent Citations (2)
| Title |
|---|
| 文洪杰等.红柱石粉精矿及合成莫来石的烧结性能.《耐火材料》.1995,第29卷(第5期),第247页2.2烧结试验部分及表1和表2中的M1-1. |
| 红柱石粉精矿及合成莫来石的烧结性能;文洪杰等;《耐火材料》;19951231;第29卷(第5期);第247页2.2烧结试验部分及表1和表2中的M1-1 * |
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| CN102898152A (en) | 2013-01-30 |
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