CN102746004A - Slag dam for aluminum-sol-combined tundish - Google Patents
Slag dam for aluminum-sol-combined tundish Download PDFInfo
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- CN102746004A CN102746004A CN2012102409451A CN201210240945A CN102746004A CN 102746004 A CN102746004 A CN 102746004A CN 2012102409451 A CN2012102409451 A CN 2012102409451A CN 201210240945 A CN201210240945 A CN 201210240945A CN 102746004 A CN102746004 A CN 102746004A
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- slag weir
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Abstract
The invention relates to a slag dam for an aluminum-sol-combined tundish, which belongs to the technical field of a continuous tundish-casting process in a ferrous metallurgical industry. A slag-dam product is obtained through recovering and sorting, sieving, preparing, dry mixing, wet mixing, vibration molding, demoulding, natural curing and drying. The slag dam has the characteristics that waste and old refractory materials are fully utilized, the process is advanced, and the rate of finished products is high; and the waste refractory materials can be reutilized, so that the cost of the product is lowered, and meanwhile, bauxite and corundum resources are protected, and the influence degree of the waste refractory materials to environment is also decreased. Meanwhile, aluminum sol is adopted as a bonding agent, so that a mullite substrate with excellent performances is generated by the aluminum sol and silicon micro powder at a lower temperature and is distributed in a whole bonding system, and therefore, each performance of the slag dam is greatly improved.
Description
Technical field
The present invention relates to a kind of iron and steel metallurgical industry continuous casting tundish in steelmaking process and use slag weir, particularly relate to the aluminium colloidal sol bonded tundish that a kind of waste refractory materials utilizes again and use slag weir, belong to continuous casting tundish Technology field in the iron and steel metallurgical industry.
Background technology
Development along with steel industry and continuous casting technology; Produce high-quality variety steel and become the target that each iron and steel enterprise chases; The continuous casting tundish is a necessary means that improves steel product quality with the setting of flow control devices such as slag weir, and traditional continuous casting tundish use slag weir use raw material is pure alumina or corundum raw material, is characterized in that cost is high; Simultaneously because the raising of steel-making industry turnaround speed; The corundum that annual ladle produces, the discarded fire-resistant village of corundum spinelle brick material are very many, not only be not fully used to make and cause the wasting of resources, and also be a very big influence to environment simultaneously.
Summary of the invention
The technical problem that the present invention will solve provides a kind of continuous casting tundish with slag weir and preparation method thereof; The present invention not only can make that waste refractory materials obtains second stage employ; Reduce the cost of product, protected bauxitic clay corundum resource simultaneously, also reduced the influence degree of waste refractory materials environment; Adopt colloidal sol as articulated system simultaneously, optimize each item performance of product.
In order to solve the problems of the technologies described above, a kind of continuous casting tundish provided by the invention is with slag weir and preparation method thereof.A kind of aluminium colloidal sol bonded tundish is used slag weir; Adopt following technical scheme: prepare burden according to following weight percent: useless magnesia brick 12-8mm is that 8～l0%, useless magnesia brick 8-5mm are that l1～15%, useless magnesia brick 5-3mm are 12～15%, and useless corundum spinelle brick 3 one lmm are 10～15%, the corundum spinelle brick≤1mm that gives up is 30～35%, metatitanic acid aluminium powder 0～5%; Silicon powder 3～5%; Pure calcium aluminate cement 3～6%, dispersion agent 0.12～0.16%, admixture 0.5～0.95%.
The content of magnesia of said useless magnesia brick >=95%, corundum spinelle content >=95% of useless corundum spinelle brick.
Said dispersion agent be in ROHM PAA or the Sodium hexametaphosphate 99 any, its add-on 0.12～0.16%; Admixture is the mixture 0.5～0.95% of metallic aluminium powder and heat-resistant steel fiber.
The metallic aluminium powder of said admixture is 0.05%, and steel fiber is 0.90%.
Described a kind of tundish is with the making method of slag weir:
Step 1. screening, will reclaim useless magnesia brick, useless corundum spinelle brick screens, reject non-useless magnesia brick such as slag, corundum spinelle brick appearance piece gives up;
Step 2: carry out fragmentation, use the special-purpose disintegrating apparatus of refractory materials,, and be processed as fine powder as required with the useless magnesia brick after the selection, useless corundum spinelle brick fragmentation;
Step 3: screening, use the vibratory screening apparatus useless magnesia brick that fragmentation is good, useless corundum spinelle brick sieve into 12-8mm, 8-5mm, 5-3mm, 3-1mm ,≤particle of 1mm;
Step 4: batching; Prepare burden according to following weight percent: useless magnesia brick 12-8mm is that 8～l0%, useless magnesia brick 8-5mm are that l1～15%, useless magnesia brick 5-3mm are 12～15%, and useless corundum spinelle brick 3 one lmm are 10～15%, the corundum spinelle brick≤1mm that gives up is 30～35%, metatitanic acid aluminium powder 0～5%; Silicon powder 3～5%; Pure calcium aluminate cement 3～6%, dispersion agent ROHM PAA or Sodium hexametaphosphate 99 0.12～0.16%, admixture 0.5～0.95%;
Step 5: do and mix, the described batching of step 4 is mixed in sand mill evenly;
Step 6: wet mixing, 4～8% aluminium colloidal sol with adding material weight in the described material of step 5 utilizes forced stirrer to stir into the mud shape that is fit to cast;
Step 7: vibratory compaction;
Step 8: the demoulding obtains the work in-process of slag weir;
Step 9: natural curing;
Step 10: drying obtains the slag weir finished product with the slag weir work in-process after the natural curing.
Vibratory compaction in the said step 7 is to use shaking table vibratory compaction.
In the said step 8 product tape mould after the moulding placed 24 hours naturally and then carry out the demoulding.
Natural curing is the maintenances 48 hours under physical environment of dam work in-process after the demoulding in the said step 9.
Drying process in the said step 10 is in roasting kiln, to carry out drying 12～24 hours, and 350 ℃ of top temperatures naturally cool to normal temperature then.
The present invention utilizes the alternative alumina of useless corundum spinelle brick, corundum to make slag weir, and this technology not only can reduce the raw materials cost of product, can also make waste and old refractory materials obtain second stage employ simultaneously, has not only practiced thrift the bauxite corundum resource but also protected environment.Adopt aluminium colloidal sol as wedding agent simultaneously, make aluminium colloidal sol and silicon powder under lower temperature, generate the mullite matrix of excellent performance, be distributed in the whole articulated system, improved slag weir each item performance greatly.
Embodiment
Below in conjunction with embodiment the present invention is further specified.
In order to solve the problems of the technologies described above, a kind of continuous casting tundish provided by the invention comprises the steps: with slag weir and preparation method
Step 1. screening, will reclaim useless magnesia brick, useless corundum spinelle brick screens, reject non-useless magnesia brick such as slag, corundum spinelle brick appearance piece gives up;
Step 2: carry out fragmentation, use the special-purpose disintegrating apparatus of refractory materials,, and be processed as fine powder as required with the useless magnesia brick after the selection, useless corundum spinelle brick fragmentation;
Step 3: screening, use the vibratory screening apparatus useless magnesia brick that fragmentation is good, useless corundum spinelle brick sieve into 12-8mm, 8-5mm, 5-3mm, 3-1mm ,≤particle of 1mm;
Step 4: batching; Prepare burden according to following weight percent: useless magnesia brick 12-8mm is that l0%, useless magnesia brick 8-5mm are 15%, the magnesia brick 5-3mm that gives up is 15%, and useless corundum spinelle brick 3 one lmm are 10%, the corundum spinelle brick≤1mm that gives up is 40%, silicon powder 5%; Pure calcium aluminate cement 4%; Dispersion agent ROHM PAA 0.08%, Sodium hexametaphosphate 99 0.08%, admixture metallic aluminium powder are 0.05%, and steel fiber is 0.90%;
Step 5: do and mix, the described batching of step 4 is mixed in sand mill evenly;
Step 6: wet mixing, 4～6% aluminium colloidal sol with adding material weight in the described material of step 5 utilizes forced stirrer to stir into the mud shape that is fit to cast;
Step 7: vibratory compaction;
Step 8: the demoulding obtains the work in-process of slag weir;
Step 9: natural curing;
Step 10: drying obtains the slag weir finished product with the slag weir work in-process after the natural curing.
Vibratory compaction in the said step 7 is to use shaking table vibratory compaction.
In the said step 8 product tape mould after the moulding placed 24 hours naturally and then carry out the demoulding.
Natural curing is the maintenances 48 hours under physical environment of dam work in-process after the demoulding in the said step 9 of root.
Drying process in the said step 10 is in roasting kiln, to carry out drying 12～24 hours, and 350 ℃ of top temperatures naturally cool to normal temperature then.
Utilize useless magnesia brick, the alternative alumina of useless corundum spinelle brick, corundum to make slag weir; This technology not only can reduce the raw materials cost of product; Simultaneously can also make waste and old refractory materials obtain second stage employ, not only practice thrift alumina, corundum resource but also protected environment.
Above-described specific descriptions; Purpose, technical scheme and beneficial effect to invention further specify, and institute it should be understood that the above is merely specific embodiment of the present invention and oneself; And be not used in qualification protection scope of the present invention; All within spirit of the present invention and principle, any modification of being made, be equal to alternative, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1.
A kind of aluminium colloidal sol bondedTundish is used slag weir, it is characterized in that, prepares burden according to following weight percent: useless magnesia brick 12-8mm is that 8～l0%, useless magnesia brick 8-5mm are that l1～15%, useless magnesia brick 5-3mm are 12～15%; Useless corundum spinelle brick 3 one lmm are 10～15%, the corundum spinelle brick≤1mm that gives up is 30～35%; Metatitanic acid aluminium powder 0～5%, silicon powder 3～5%, pure calcium aluminate cement 3～6%; Dispersion agent 0.12～0.16%, admixture 0.5～0.95%.
2. a kind of aluminium colloidal sol bonded tundish according to claim 1 is used slag weir, it is characterized in that: the content of magnesia of said useless magnesia brick >=95%, corundum spinelle content >=95% of useless corundum spinelle brick.
3. a kind of aluminium colloidal sol bonded tundish according to claim 1 is used slag weir, and it is characterized in that: said dispersion agent is any among Sodium hexametaphosphate 99 or the vinylformic acid PAA, and its add-on is 0.12～0.16%; Admixture is the mixture 0.5～0.95% of metallic aluminium powder and heat-resistant steel fiber.
4. use slag weir according to claim 3 or 4 described a kind of aluminium colloidal sol bonded tundish, it is characterized in that: the metallic aluminium powder of said admixture is 0.05%, and steel fiber is 0.90%.
5. a kind of aluminium colloidal sol bonded tundish according to claim 1 is characterized in that with the making method of slag weir:
Step 1. screening, will reclaim useless magnesia brick, useless corundum spinelle brick screens, reject non-useless magnesia brick such as slag, corundum spinelle brick appearance piece gives up;
Step 2: carry out fragmentation, use the special-purpose disintegrating apparatus of refractory materials,, and be processed as fine powder as required with the useless magnesia brick after the selection, useless corundum spinelle brick fragmentation;
Step 3: screening, use the vibratory screening apparatus waste and old high alumina brick that fragmentation is good sieve into 12-8mm, 8-5mm, 5-3mm, 3-1mm ,≤particle of 1mm;
Step 4: batching; Prepare burden according to following weight percent: useless magnesia brick 12-8mm is that 8～l0%, useless magnesia brick 8-5mm are that l1～15%, useless magnesia brick 5-3mm are 12～15%, and useless corundum spinelle brick 3 one lmm are 10～15%, the corundum spinelle brick≤1mm that gives up is 30～35%, metatitanic acid aluminium powder 0～5%; Silicon powder 3～5%; Pure calcium aluminate cement 3～6%, dispersion agent 0.12～0.16%, admixture 0.5～0.95%;
Step 5: do and mix, the described batching of step 4 is mixed in sand mill evenly;
Step 6: wet mixing, 4～6% aluminium colloidal sol with adding material weight in the described material of step 5 utilizes forced stirrer to stir into the mud shape that is fit to cast;
Step 7: vibratory compaction;
Step 8: the demoulding obtains the work in-process of slag weir;
Step 9: natural curing;
Step 10: drying obtains the slag weir finished product with the slag weir work in-process after the natural curing.
6. a kind of aluminium colloidal sol bonded tundish according to claim 5 is with the making method of slag weir, and it is characterized in that: the vibratory compaction in the said step 7 is to use shaking table vibratory compaction.
7. a kind of aluminium colloidal sol bonded tundish according to claim 5 is characterized in that with the making method of slag weir: in the said step 8 product tape mould after the moulding placed 24 hours naturally and then carry out the demoulding.
8. a kind of aluminium colloidal sol bonded tundish according to claim 5 is characterized in that with the making method of slag weir: natural curing is the maintenances 48 hours under physical environment of slag weir work in-process after the demoulding in the said step 9.
9. a kind of aluminium colloidal sol bonded tundish according to claim 5 is with the making method of slag weir; It is characterized in that: the drying process in the said step 10 is in roasting kiln, to carry out drying 12～24 hours; 350 ℃ of top temperatures naturally cool to normal temperature then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012102409451A CN102746004A (en) | 2012-07-12 | 2012-07-12 | Slag dam for aluminum-sol-combined tundish |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012102409451A CN102746004A (en) | 2012-07-12 | 2012-07-12 | Slag dam for aluminum-sol-combined tundish |
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| CN102746004A true CN102746004A (en) | 2012-10-24 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964878A (en) * | 2014-05-28 | 2014-08-06 | 张婷 | Slag dam for 80-ton tundish and preparation method thereof |
| CN104944993A (en) * | 2015-07-15 | 2015-09-30 | 郑州振东科技有限公司 | Method for producing carbon-free spinel bricks used for ladles and jar opening parts through waste spinel bricks |
| CN109761593A (en) * | 2019-03-13 | 2019-05-17 | 武汉科技大学 | It is a kind of using Aluminum sol as anode material of lithium battery sintering saggar of bonding agent and preparation method thereof |
| CN112500175A (en) * | 2021-02-05 | 2021-03-16 | 北京利尔高温材料股份有限公司 | Light high-strength steel ladle permanent layer castable and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101579726A (en) * | 2009-06-25 | 2009-11-18 | 莱芜钢铁股份有限公司 | Compound spoil-retaining wall with holes for tundish and preparation process thereof |
| CN102161212A (en) * | 2011-01-18 | 2011-08-24 | 北京利尔高温材料股份有限公司 | Method for manufacturing low-cost slag blocking dam |
-
2012
- 2012-07-12 CN CN2012102409451A patent/CN102746004A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101579726A (en) * | 2009-06-25 | 2009-11-18 | 莱芜钢铁股份有限公司 | Compound spoil-retaining wall with holes for tundish and preparation process thereof |
| CN102161212A (en) * | 2011-01-18 | 2011-08-24 | 北京利尔高温材料股份有限公司 | Method for manufacturing low-cost slag blocking dam |
Non-Patent Citations (1)
| Title |
|---|
| 石雄 等: "钢包用铝镁浇注料的抗渣性能", 《耐火材料》, vol. 42, no. 05, 31 December 2008 (2008-12-31), pages 394 - 395 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103964878A (en) * | 2014-05-28 | 2014-08-06 | 张婷 | Slag dam for 80-ton tundish and preparation method thereof |
| CN104944993A (en) * | 2015-07-15 | 2015-09-30 | 郑州振东科技有限公司 | Method for producing carbon-free spinel bricks used for ladles and jar opening parts through waste spinel bricks |
| CN109761593A (en) * | 2019-03-13 | 2019-05-17 | 武汉科技大学 | It is a kind of using Aluminum sol as anode material of lithium battery sintering saggar of bonding agent and preparation method thereof |
| CN112500175A (en) * | 2021-02-05 | 2021-03-16 | 北京利尔高温材料股份有限公司 | Light high-strength steel ladle permanent layer castable and preparation method thereof |
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Application publication date: 20121024 |