CN103755366B - Tundish permanent layer mould material - Google Patents
Tundish permanent layer mould material Download PDFInfo
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- CN103755366B CN103755366B CN201410009462.XA CN201410009462A CN103755366B CN 103755366 B CN103755366 B CN 103755366B CN 201410009462 A CN201410009462 A CN 201410009462A CN 103755366 B CN103755366 B CN 103755366B
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- alumina
- aggregate
- alumina aggregate
- mould material
- permanent layer
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Abstract
The present invention relates to tundish permanent layer mould material, be made up of the component of following weight percent: 8 ~ 20mm alumina aggregate 8.3 ~ 11.9%, 5 ~ 8mm alumina aggregate 13.7 ~ 17.3%, 3 ~ 5mm alumina aggregate 17.8 ~ 21.7%, 0 ~ 3mm alumina aggregate 16.2 ~ 33.7%, cement 5.5 ~ 6.22%, high alumina micro mist 4 ~ 5.68%, alumina fine powder 11.3 ~ 12.8%, silicon powder 3.7 ~ 4.3%, kyanite 2 ~ 3%, tripoly phosphate sodium STPP 0 ~ 0.3%, Sodium hexametaphosphate 99 0 ~ 0.3%, calcium lignin sulphonate 0 ~ 0.25%, explosion-proof fiber 0 ~ 0.15%; Advantage of the present invention: the tundish permanent layer mould material be mixed by said components has good mobility, intensity and volume stability good, stability can be good, reduces mould material generation crack performance few, improve work-ing life.
Description
Technical field
The present invention relates to tundish permanent layer mould material.
Background technology
Tundish is the key equipment in continuous casting, Ye Shi steel mill refractory consumption rate rich and influential family, it is used for the molten steel that receives in ladle it is injected crystallizer continuously, evenly, stably, after existing tundish permanent layer mould material cast, during cast, vibrated by vibrator, during operation, there is vibration not in place, void content is more, and local stress segregation is with concentrated; In construction process, mould floats and causes pour mass lower, transverse to rupture, and destroys the integrity of pour mass; Water cement ratio is undesirable, amount of water is excessive, there is following shortcoming: mould material easily occur be full of cracks and slabbing, peel off, slag lining generation melting loss, Bao Bi collapse, permanent layer superficial charring, sintering etc., tundish permanent layer is damaged frequently, both add tundish and protect the workload and hidden danger of quality of producing maintenance, affect again carrying out smoothly of steel mill's Sustainable high yield, working life is short.
Summary of the invention
It is short to there is work-ing life in the technical problem to be solved in the present invention existing tundish permanent layer mould material, and Practical Performance is poor, thus provides tundish permanent layer mould material.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions: tundish permanent layer mould material, be made up of the component of following weight percent: 8 ~ 20mm alumina aggregate 8.3 ~ 11.9%, 5 ~ 8mm alumina aggregate 13.7 ~ 17.3%, 3 ~ 5mm alumina aggregate 17.8 ~ 21.7%, 0 ~ 3mm alumina aggregate 16.2 ~ 33.7%, cement 5.5 ~ 6.22%, high alumina micro mist 4 ~ 5.68%, alumina fine powder 11.3 ~ 12.8%, silicon powder 3.7 ~ 4.3%, kyanite 2 ~ 3%, tripoly phosphate sodium STPP 0 ~ 0.3%, Sodium hexametaphosphate 99 0 ~ 0.3%, calcium lignin sulphonate 0 ~ 0.25%, explosion-proof fiber 0 ~ 0.15%.
Preferably, be made up of the component of following weight percent: 8 ~ 20mm alumina aggregate 11.9%, 5 ~ 8mm alumina aggregate 17.3%, 3 ~ 5mm alumina aggregate 21.7%, 0 ~ 3mm alumina aggregate 16.2%, cement 6.22%, high alumina micro mist 5.58%, alumina fine powder 12.8%, silicon powder 4.3%, kyanite 3%, tripoly phosphate sodium STPP 0.3%, Sodium hexametaphosphate 99 0.3%, calcium lignin sulphonate 0.25%, explosion-proof fiber 0.15%, ensure that the tundish permanent layer mould material of mixing has good mobility, intensity and volume stability good, improve intensity, its folding strength at various temperatures and remaining Linear change rate are evenly improved, stability can be good, reduce mould material generation crack performance few, improve work-ing life, easy construction, cost index declines, prevent the sintering hanging layer.
Preferably, be made up of the component of following weight percent: 8 ~ 20mm alumina aggregate 10%, 5 ~ 8mm alumina aggregate 15%, 3 ~ 5mm alumina aggregate 20%, 0 ~ 3mm alumina aggregate 25%, cement 6%, high alumina micro mist 4%, alumina fine powder 12%, silicon powder 4%, kyanite 2.5%, tripoly phosphate sodium STPP 0.17%, Sodium hexametaphosphate 99 0.2%, calcium lignin sulphonate 0.1%, explosion-proof fiber 0.03%, ensure that the tundish permanent layer mould material of mixing has good mobility, intensity and volume stability good, improve intensity, its folding strength at various temperatures and remaining Linear change rate are evenly improved, stability can be good, reduce mould material generation crack performance few, improve work-ing life, easy construction, cost index declines, prevent the sintering hanging layer.
Preferably, be made up of the component of following weight percent: 8 ~ 20mm alumina aggregate 8.3%, 5 ~ 8mm alumina aggregate 13.7%, 3 ~ 5mm alumina aggregate 17.8%, 0 ~ 3mm alumina aggregate 33.7%, cement 5.5%, high alumina micro mist 4%, alumina fine powder 11.3%, silicon powder 3.7%, kyanite 2%, ensure that the tundish permanent layer mould material of mixing has good mobility, intensity and volume stability good, improve intensity, its folding strength at various temperatures and remaining Linear change rate are evenly improved, stability can be good, reduce mould material generation crack performance few, improve work-ing life, easy construction, cost index declines, prevent the sintering hanging layer.
Preferably, Al in described 8 ~ 20mm alumina aggregate
2o
3content, Al in 5 ~ 8mm alumina aggregate
2o
3content, Al in 3 ~ 5mm alumina aggregate
2o
3content, Al in 0 ~ 3mm alumina aggregate
2o
3content be 80%, Al in described alumina fine powder
2o
3content be 85%, can improve the volume stability of material, can effectively prevent from hanging the sintering of layer, intensity is high, and stability is good, long service life.
Preferably, SiO in described silicon powder
2content>=94%, can improve the folding strength of mixed mould material, thus the generation of chapping when decreasing use, stability is good.
Preferably, granularity >=400 order of described high alumina micro mist, granularity >=200 order of described alumina fine powder, the granularity of described kyanite is 180 orders, granularity >=400 object high alumina micro mist makes that mould material has good quality product, production cost is low, weather resistance good, granularity >=200 object alumina fine powder makes mould material have satisfactory stability and physicals, and granularity is that 180 object kyanites make mould material have good hot expansibility and high refractoriness.
In sum, advantage of the present invention: by 8 ~ 20mm alumina aggregate, 5 ~ 8mm alumina aggregate, 3 ~ 5mm alumina aggregate, 0 ~ 3mm alumina aggregate, cement, high alumina micro mist, alumina fine powder, silicon powder, kyanite, tripoly phosphate sodium STPP, Sodium hexametaphosphate 99, calcium lignin sulphonate, the tundish permanent layer mould material that explosion-proof blending in of fibers is made has good mobility, intensity and volume stability good, improve intensity, its folding strength at various temperatures and remaining Linear change rate are evenly improved, stability can be good, reduce mould material generation crack performance few, improve work-ing life, easy construction, cost index declines, prevent the sintering hanging layer.
Embodiment
Embodiment one:
Tundish permanent layer mould material, is made up of the component of following weight percent: 8 ~ 20mm alumina aggregate 11.9%, 5 ~ 8mm alumina aggregate 17.3%, 3 ~ 5mm alumina aggregate 21.7%, 0 ~ 3mm alumina aggregate 16.2%, cement 6.22%, high alumina micro mist 5.58%, alumina fine powder 12.8%, silicon powder 4.3%, kyanite 3%, tripoly phosphate sodium STPP 0.3%, Sodium hexametaphosphate 99 0.3%, calcium lignin sulphonate 0.25%, explosion-proof fiber 0.15%.
Embodiment two:
Tundish permanent layer mould material, is made up of the component of following weight percent: 8 ~ 20mm alumina aggregate 10%, 5 ~ 8mm alumina aggregate 15%, 3 ~ 5mm alumina aggregate 20%, 0 ~ 3mm alumina aggregate 25%, cement 6%, high alumina micro mist 4%, alumina fine powder 12%, silicon powder 4%, kyanite 2.5%, tripoly phosphate sodium STPP 0.17%, Sodium hexametaphosphate 99 0.2%, calcium lignin sulphonate 0.1%, explosion-proof fiber 0.03%.
Embodiment three:
Tundish permanent layer mould material, is made up of the component of following weight percent: 8 ~ 20mm alumina aggregate 8.3%, 5 ~ 8mm alumina aggregate 13.7%, 3 ~ 5mm alumina aggregate 17.8%, 0 ~ 3mm alumina aggregate 33.7%, cement 5.5%, high alumina micro mist 4%, alumina fine powder 11.3%, silicon powder 3.7%, kyanite 2%.
Al in described 8 ~ 20mm alumina aggregate
2o
3content, Al in 5 ~ 8mm alumina aggregate
2o
3content, Al in 3 ~ 5mm alumina aggregate
2o
3content, Al in 0 ~ 3mm alumina aggregate
2o
3content be 80%, Al in described alumina fine powder
2o
3content be 85%, can improve the volume stability of material, can effectively prevent from hanging the sintering of layer, intensity is high, and stability is good, long service life, SiO in described silicon powder
2content>=94%, the folding strength of mixed mould material can be improved, thus the generation of chapping when decreasing use, stability is good, granularity>=400 order of described high alumina micro mist, granularity>=200 order of described alumina fine powder, the granularity of described kyanite is 180 orders, granularity>=400 object high alumina micro mist makes mould material have good quality product, production cost is low, weather resistance is good, granularity>=200 object alumina fine powder makes mould material have satisfactory stability and physicals, granularity is that 180 object kyanites make mould material have good hot expansibility and high refractoriness.
By 8 ~ 20mm alumina aggregate, 5 ~ 8mm alumina aggregate, 3 ~ 5mm alumina aggregate, 0 ~ 3mm alumina aggregate, cement, high alumina micro mist, alumina fine powder, silicon powder, kyanite, tripoly phosphate sodium STPP, Sodium hexametaphosphate 99, calcium lignin sulphonate, the tundish permanent layer mould material that explosion-proof blending in of fibers is made has good mobility, intensity and volume stability good, improve intensity, its folding strength at various temperatures and remaining Linear change rate are evenly improved, stability can be good, reduce mould material generation crack performance few, improve work-ing life, easy construction, cost index declines, prevent the sintering hanging layer.
Claims (3)
1. tundish permanent layer mould material, is characterized in that: be made up of the component of following weight percent: 8 ~ 20mm alumina aggregate 8.3 ~ 11.9%, 5 ~ 8mm alumina aggregate 13.7 ~ 17.3%, 3 ~ 5mm alumina aggregate 17.8 ~ 21.7%, 0 ~ 3mm alumina aggregate 16.2 ~ 33.7%, cement 5.5 ~ 6.22%, high alumina micro mist 4 ~ 5.68%, alumina fine powder 11.3 ~ 12.8%, silicon powder 3.7 ~ 4.3%, kyanite 2 ~ 3%, tripoly phosphate sodium STPP 0 ~ 0.3%, Sodium hexametaphosphate 99 0 ~ 0.3%, calcium lignin sulphonate 0 ~ 0.25%, explosion-proof fiber 0 ~ 0.15%;
Al in described 8 ~ 20mm alumina aggregate
2o
3content, Al in 5 ~ 8mm alumina aggregate
2o
3content, Al in 3 ~ 5mm alumina aggregate
2o
3content, Al in 0 ~ 3mm alumina aggregate
2o
3content be 80%, Al in described alumina fine powder
2o
3content be 85%;
SiO in described silicon powder
2content>=94%;
Granularity >=400 order of described high alumina micro mist, granularity >=200 order of described alumina fine powder, the granularity of described kyanite is 180 orders.
2. tundish permanent layer mould material according to claim 1, is characterized in that: be made up of the component of following weight percent: 8 ~ 20mm alumina aggregate 11.9%, 5 ~ 8mm alumina aggregate 17.3%, 3 ~ 5mm alumina aggregate 21.7%, 0 ~ 3mm alumina aggregate 16.2%, cement 6.22%, high alumina micro mist 5.58%, alumina fine powder 12.8%, silicon powder 4.3%, kyanite 3%, tripoly phosphate sodium STPP 0.3%, Sodium hexametaphosphate 99 0.3%, calcium lignin sulphonate 0.25%, explosion-proof fiber 0.15%.
3. tundish permanent layer mould material according to claim 1, is characterized in that: be made up of the component of following weight percent: 8 ~ 20mm alumina aggregate 8.3%, 5 ~ 8mm alumina aggregate 13.7%, 3 ~ 5mm alumina aggregate 17.8%, 0 ~ 3mm alumina aggregate 33.7%, cement 5.5%, high alumina micro mist 4%, alumina fine powder 11.3%, silicon powder 3.7%, kyanite 2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410009462.XA CN103755366B (en) | 2014-01-08 | 2014-01-08 | Tundish permanent layer mould material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410009462.XA CN103755366B (en) | 2014-01-08 | 2014-01-08 | Tundish permanent layer mould material |
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| Publication Number | Publication Date |
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| CN103755366A CN103755366A (en) | 2014-04-30 |
| CN103755366B true CN103755366B (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410009462.XA Expired - Fee Related CN103755366B (en) | 2014-01-08 | 2014-01-08 | Tundish permanent layer mould material |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108585805A (en) * | 2018-06-21 | 2018-09-28 | 德清凯瑞新材料有限公司 | Packet permanent layer castable and preparation method thereof in one kind |
| CN109534831A (en) * | 2018-12-05 | 2019-03-29 | 钢城集团凉山瑞海实业有限公司 | Half cylinder of steel permanent layer castable |
| CN111377715A (en) * | 2020-03-23 | 2020-07-07 | 浙江欣辉耐火材料股份有限公司 | Tundish castable and preparation method thereof |
| CN111484344A (en) * | 2020-04-21 | 2020-08-04 | 鞍山市正大炉料有限公司 | Cylindrical refractory castable prefabricated member |
| CN111995405A (en) * | 2020-08-05 | 2020-11-27 | 河南好运祥耐材有限公司 | High-temperature-resistant heat-preservation permanent lining for steel ladle |
| CN112341222B (en) * | 2020-11-11 | 2023-04-14 | 湖南湘钢瑞泰科技有限公司 | Hot metal ladle castable and preparation method thereof |
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2014
- 2014-01-08 CN CN201410009462.XA patent/CN103755366B/en not_active Expired - Fee Related
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