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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- CN
- China
- Prior art keywords
- brick
- useless
- slag weir
- colloidal sol
- slag
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 239000002893 slag Substances 0.000 title claims abstract description 39
- 229910052593 corundum Inorganic materials 0.000 claims abstract description 36
- 239000010431 corundum Substances 0.000 claims abstract description 36
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 13
- 239000011819 refractory material Substances 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 10
- 239000002699 waste material Substances 0.000 claims abstract description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000000465 moulding Methods 0.000 claims abstract description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 62
- 239000011449 brick Substances 0.000 claims description 56
- 239000000395 magnesium oxide Substances 0.000 claims description 31
- 239000004411 aluminium Substances 0.000 claims description 26
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 238000005056 compaction Methods 0.000 claims description 9
- 238000013467 fragmentation Methods 0.000 claims description 9
- 238000006062 fragmentation reaction Methods 0.000 claims description 9
- 238000012216 screening Methods 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000006185 dispersion Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000011863 silicon-based powder Substances 0.000 claims description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 5
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 4
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 4
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N Acrylic acid Chemical compound OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims 1
- 229910001570 bauxite Inorganic materials 0.000 abstract description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052863 mullite Inorganic materials 0.000 abstract description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 abstract 1
- 239000007767 bonding agent Substances 0.000 abstract 1
- 238000005266 casting Methods 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000007580 dry-mixing Methods 0.000 abstract 1
- 238000007873 sieving Methods 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
- 238000009749 continuous casting Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000002994 raw material Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
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 |
|---|---|---|---|
| CN2012102409451A CN102746004A (en) | 2012-07-12 | 2012-07-12 | Slag dam for aluminum-sol-combined tundish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102409451A CN102746004A (en) | 2012-07-12 | 2012-07-12 | Slag dam for aluminum-sol-combined tundish |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102746004A true CN102746004A (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102409451A Pending CN102746004A (en) | 2012-07-12 | 2012-07-12 | Slag dam for aluminum-sol-combined tundish |
Country Status (1)
| Country | Link |
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| CN (1) | CN102746004A (en) |
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 | A saggar for sintering positive electrode material of lithium battery using aluminum sol as binder 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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| 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)
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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 | A saggar for sintering positive electrode material of lithium battery using aluminum sol as binder 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 |