CN104926334A - Casting material for ladle lining - Google Patents
Casting material for ladle lining Download PDFInfo
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- CN104926334A CN104926334A CN201510380596.7A CN201510380596A CN104926334A CN 104926334 A CN104926334 A CN 104926334A CN 201510380596 A CN201510380596 A CN 201510380596A CN 104926334 A CN104926334 A CN 104926334A
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- CN
- China
- Prior art keywords
- ladle
- powder
- aluminate
- casting material
- mould material
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Abstract
The invention relates to a casting material for a ladle lining, in particular to a casting material for the ladle lining or a working layer. In order to solve the technical problems, the invention provides a casting material of which a using position is a direct lining at which a ladle and liquid steel are in contact, the casting material comprises the following components in percentage by weight: 8-20% of white corundum of 12-8mm, 11-15% of sintered micropore aluminum spinel of 8-5mm, 12-15% of sintered micropore aluminum spinel of 5-3mm, 10-15% of sintered micropore aluminum spinel of 3-1mm, 30-35% of sintered micropore aluminum spinel of smaller than or equal to 1mm, 0-5% of modified magnesium-calcium sand of smaller than or equal to 1mm, 1% of chromium carbide powder, 3-5% of composite gel, 1% of hydrated alumina micro powder, 1% of pearl argil powder, 0.5% of bismuth germanate powder, 3-5% of modified pure calcium aluminate cement, 0.1% of C7H10N2O2S, 0.1% of C21H14Na2O6S2 and 0.05% of 2-morpholine ethyl sulfonic acid. The casting material disclosed by the invention can alleviate the reaction degree of the ladle lining material and slag, improves the high temperature property and the slag corrosion resistant property of an anti-slag ladle product, greatly improves the thermal shock resistant property of the ladle, and effectively prolongs the service life of the whole casting ladle, and the service life of the casting material is 30% longer than a conventional ladle in the same type.
Description
Technical field
The present invention relates to a kind of ladle lining fireproof material, specifically a kind of ladle liner mould material.
Background technology
The refractory materials directly contacted with molten steel in ladle is called steel ladle working layer.In prior art, steel ladle working layer generally adopts spinel pouring material, but the properties of ladle liner is general at present, therefore, directly affects the work-ing life of ladle, how to improve the work-ing life of ladle, the performance improving steel ladle working layer is the most key, and therefore the improvement in performance of ladle liner mould material becomes the key extending ladle work-ing life.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of ladle liner mould material, the level of response of lining material in the ladle and slag can be reduced, improve high-temperature behavior, the anti-scour property of its slag resistance ladle product, significantly add the thermal shock resistance of ladle, improve the over-all properties of ladle generally, the work-ing life of final ladle significantly increases.
Technical problem to be solved by this invention is to provide a kind of ladle liner mould material, use the direct liner that position is ladle and steel contacts, wherein each weight percentages of components is: white fused alumina 12-8mm is 8 ~ 20%, sintered microporous aluminate 8-5mm is l1 ~ 15%, sintered microporous aluminate 5-3mm is 12 ~ 15%, sintered microporous aluminate 3 one lmm is 10 ~ 15%, sintered microporous aluminate≤1mm is 30 ~ 35%, modification calcium magnesia sand≤1mm0 ~ 5%, Cr3C2 powder 1%, plural gel powder 3 ~ 5%, hydrated aluminum oxide micro mist 1%, nakrite powder 1%, germanic acid bismuth meal 0.5%, modification pure calcium aluminate cement 3 ~ 5%, additional C
7h
10n
2o
2s0.1%, C
21h
14na
2o
6s
20.1%, MES 0.05%.
The further technical characteristic of the present invention is: described plural gel powder is the composite powder of zirconium gel powder and alumina gel powder, and its weight ratio is 1:2.
Described modification calcium magnesia sand refers to calcium magnesia sand H
2c
2o
4carry out dipping and carbonating process, make film on MgO-CaO clinker form the coating film of water resistant.
Described sintered microporous aluminate is alumina content >=78%, aperture≤5 micron of micropore of remaining silent, and micropore of remaining silent accounts for more than 80% of total pore.
Aluminium content >=30% of described nakrite.
Described modification pure calcium aluminate cement be add in cement production process 5% aluminate, 3% zirconium carbonate again through the produced characteristic cement of high temperature sintering, aluminium content >=75% of modified calcium aluminate cement.
The invention has the beneficial effects as follows:
The present invention can reduce the level of response of lining material in the ladle and slag, improve high-temperature behavior, the anti-scour property of its slag resistance ladle product, significantly add the thermal shock resistance of ladle, effectively improve the work-ing life of integrated poured ladle, the ladle life more of the same type than routine improves more than 30%.
Embodiment
Embodiment 1:
A kind of ladle liner mould material, use the direct liner that position is ladle and steel contacts, wherein each weight percentages of components is: each weight percentages of components is: white fused alumina 12-8mm is 15%, sintered microporous aluminate 8-5mm is 14%, sintered microporous aluminate 5-3mm is 15%, sintered microporous aluminate 3 one lmm is 13%, sintered microporous aluminate≤1mm is 30%, Cr3C2 powder 1%, plural gel powder 5%, hydrated aluminum oxide micro mist 1%, nakrite powder 1%, germanic acid bismuth meal 0.5%, modification pure calcium aluminate cement 4.5%, additional C
7h
10n
2o
2s0.1%, C
21h
14na
2o
6s
20.1%, MES 0.05%.Above-mentioned batching is mixed and obtains Refractory Carstables for Ladles.
Carry out experiment test with the ladle liner casting material formula of embodiment 1: the additional water accounting for above-mentioned formula rate weight 3 ~ 6wt%, test performance index is as follows: volume density is 3.0/cm
3; After 1600 DEG C × 3h burns, folding strength is 18.8MPa; After 1600 DEG C × 3h burns, compressive strength is 79MPa; After 1100 DEG C of water-cooleds 10 times, folding strength conservation rate is 41%; 1500 DEG C of revolution crucible method anti-slag experiment erosion index 14%; Penetration index 24%.The basicity CaO/SiO2=2.03 of the slag that experiment uses.More than 30% is improved than ladle life conventional of the same type.
Embodiment 2:
A kind of ladle liner mould material, wherein each weight percentages of components is: each weight percentages of components is: white fused alumina 12-8mm is 14%, sintered microporous aluminate 8-5mm is 15%, sintered microporous aluminate 5-3mm is 15%, sintered microporous aluminate 3 one lmm is 12%, sintered microporous aluminate≤1mm is 30%, modification calcium magnesia sand≤1mm is 2%, Cr3C2 powder 1%, plural gel powder 5%, hydrated aluminum oxide micro mist 1%, nakrite powder 1%, germanic acid bismuth meal 0.5%, modification pure calcium aluminate cement 3.5%, additional C
7h
10n
2o
2s0.1%, C
21h
14na
2o
6s
20.1%, MES 0.05%.Above-mentioned batching is mixed and obtains Refractory Carstables for Ladles.
Carry out experiment test with the ladle liner casting material formula of embodiment 2: the additional water accounting for above-mentioned formula rate weight 3 ~ 6wt%, test performance index is as follows: volume density is 3.0/cm
3; After 1600 DEG C × 3h burns, folding strength is 18MPa; After 1600 DEG C × 3h burns, compressive strength is 71MPa; After 1100 DEG C of water-cooleds 10 times, folding strength conservation rate is 54%; 1500 DEG C of revolution crucible method anti-slag experiment erosion index 11%; Penetration index 19%.The basicity CaO/SiO of the slag that experiment uses
2=2.03.More than 33% is improved than ladle life conventional of the same type.
Claims (6)
1. a ladle liner mould material, it is characterized in that each weight percentages of components is: white fused alumina 12-8mm is 8 ~ 20%, sintered microporous aluminate 8-5mm is l1 ~ 15%, sintered microporous aluminate 5-3mm is 12 ~ 15%, sintered microporous aluminate 3 one lmm is 10 ~ 15%, sintered microporous aluminate≤1mm is 30 ~ 35%, modification calcium magnesia sand≤1mm0 ~ 5%, Cr3C2 powder 1%, plural gel powder 3 ~ 5%, hydrated aluminum oxide micro mist 1%, nakrite powder 1%, germanic acid bismuth meal 0.5%, modification pure calcium aluminate cement 3 ~ 5%, additional C
7h
10n
2o
2s0.1%, C
21h
14na
2o
6s
20.1%, MES 0.05%.
2. ladle liner mould material as claimed in claim 1, it is characterized in that described plural gel powder is the composite powder of zirconium gel powder and alumina gel powder, its weight ratio is 1:2.
3. ladle liner mould material as claimed in claim 1, it is characterized in that described sintered microporous aluminate is alumina content >=78%, aperture≤5 micron of micropore of remaining silent, micropore of remaining silent accounts for more than 80% of total pore.
4. ladle liner mould material as claimed in claim 1, is characterized in that described modification calcium magnesia sand refers to calcium magnesia sand H
2c
2o
4carry out dipping and carbonating process, make film on MgO-CaO clinker form the coating film of water resistant.
5. ladle liner mould material as claimed in claim 1, is characterized in that aluminium content >=30% of described nakrite.
6. ladle liner mould material as claimed in claim 1, it is characterized in that described modification pure calcium aluminate cement be add in cement production process 5% aluminate, 3% zirconium carbonate again through the produced characteristic cement of high temperature sintering, aluminium content >=75% of modified calcium aluminate cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510380596.7A CN104926334A (en) | 2015-07-02 | 2015-07-02 | Casting material for ladle lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510380596.7A CN104926334A (en) | 2015-07-02 | 2015-07-02 | Casting material for ladle lining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104926334A true CN104926334A (en) | 2015-09-23 |
Family
ID=54113796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510380596.7A Pending CN104926334A (en) | 2015-07-02 | 2015-07-02 | Casting material for ladle lining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104926334A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101544505A (en) * | 2009-03-20 | 2009-09-30 | 高树森 | Nano Al2O3 and MgO composite ceramic bonded spinel-magnesia fireproof casting material and preparation method thereof |
-
2015
- 2015-07-02 CN CN201510380596.7A patent/CN104926334A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101544505A (en) * | 2009-03-20 | 2009-09-30 | 高树森 | Nano Al2O3 and MgO composite ceramic bonded spinel-magnesia fireproof casting material and preparation method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150923 |