CN104130002A - Magnesium spinel ladle direct current castable - Google Patents
Magnesium spinel ladle direct current castable Download PDFInfo
- Publication number
- CN104130002A CN104130002A CN201410369210.8A CN201410369210A CN104130002A CN 104130002 A CN104130002 A CN 104130002A CN 201410369210 A CN201410369210 A CN 201410369210A CN 104130002 A CN104130002 A CN 104130002A
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- China
- Prior art keywords
- spinel
- direct current
- aluminum
- mould material
- reducing agent
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Abstract
The invention discloses a magnesium spinel ladle direct current castable, comprising the following components by weight: 58-75% of white corundum, 7-12% of fused magnesia alumina spinel, 10-20% of aluminate spinel rich in magnesium, 33-7% of alpha-Al2O, 2-4% of aluminate cement, and 0.1-0.3% of a composite water reducing agent. The castable provided by the invention has low resistance to shear stress, and can be pumped; and addition of spinel significantly improves the performance of alumina refractory material, and reduces the cost of furnace lining.
Description
Technical field
The invention belongs to technical field of refractory materials, be specifically related to ladle direct current mould material.
Background technology
Traditional Refractory Carstables for Ladles adopts the thin component of high purity aluminium oxide-spinel refractory, but the anti-shearing stress of this mould material is large, is unfavorable for pumping.
Summary of the invention
Technical problem to be solved by this invention is just to provide a kind of magnesia spinel matter ladle direct current cast, makes mould material have low opposing shear stress, is conveniently pumped.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: magnesia spinel matter ladle direct current mould material, is made up of the raw material of following mass component: white fused alumina 58～75%, electric smelting aluminum-spinel 7～12%, rich aluminum-spinel 10～20%, α-Al
2o
33～7%, aluminate cement 2～4%, composite water-reducing agent 0.1～0.3%.
Preferably, by white fused alumina 67%, electric smelting aluminum-spinel 10%, rich aluminum-spinel 15%, α-Al
2o
35%, aluminate cement 2.8%, composite water-reducing agent 0.2% form.
Preferably, described white fused alumina consist of 8～10 μ m10%, 5～8 μ m10%, 3～5 μ m12%, 1～3 μ m10%, 0-1 μ m25%.
Preferably, described electric smelting aluminum-spinel and rich aluminum-spinel adopt 325 object particles.
Preferably, by white fused alumina 58%, electric smelting aluminum-spinel 14%, rich aluminum-spinel 18%, α-Al
2o
36%, aluminate cement 3.7%, composite water-reducing agent 0.3% form.
Preferably, by white fused alumina 72%, electric smelting aluminum-spinel 8%, rich aluminum-spinel 12%, α-Al
2o
34%, aluminate cement 3.75%, composite water-reducing agent 0.25% form.
The present invention is in order to make mould material have low opposing shear stress, use white fused alumina as main ingredient, electric smelting aluminum-spinel and rich aluminum-spinel and aluminate cement and composite water-reducing agent have been added simultaneously, make mould material there is low opposing shear stress, can be pumped, and spinel add the remarkable performance that increases alumina refractory, reduced the cost of furnace lining.
Embodiment
Magnesia spinel matter ladle direct current mould material, is made up of the raw material of following mass component: white fused alumina 58～75%, electric smelting aluminum-spinel 7～12%, rich aluminum-spinel 10～20%, α-Al
2o
33～7%, aluminate cement 2～4%, composite water-reducing agent 0.1～0.3%.
Below in conjunction with specific embodiment explanation magnesia spinel matter ladle direct current mould material.
Embodiment 1, by white fused alumina 67%, electric smelting aluminum-spinel 10%, rich aluminum-spinel 15%, α-Al
2o
35%, aluminate cement 2.8%, composite water-reducing agent 0.2% form.Wherein, described white fused alumina consist of 8～10 μ m10%, 5～8 μ m10%, 3～5 μ m12%, 1～3 μ m10%, 0-1 μ m25%.Described electric smelting aluminum-spinel and rich aluminum-spinel adopt 325 object particles.
Its main performance index is: 1, volume density (g/cm3): 110 DEG C of * 24h >=2.51500 DEG C × 3h >=2.6; 2,110 DEG C of * 24h >=81500 of folding strength (MPa) DEG C × 3h >=13; 3,110 DEG C of * 24h >=48 1500 of compressive strength (MPa) DEG C × 3h >=2004, %1500 DEG C of * 3h ± 0.15 of heater wire velocity of variation.
Embodiment 2, by white fused alumina 58%, electric smelting aluminum-spinel 14%, rich aluminum-spinel 18%, α-Al
2o
36%, aluminate cement 3.7%, composite water-reducing agent 0.3% form.
Embodiment 3, by white fused alumina 72%, electric smelting aluminum-spinel 8%, rich aluminum-spinel 12%, α-Al
2o
34%, aluminate cement 3.75%, composite water-reducing agent 0.25% form.
Wherein, above-mentioned per-cent is the per-cent that occupies raw material total mass.
Magnesium-aluminium spinel is the one having in the oxide compound of same crystal structure, and this crystalline structure is called spinel structure.Spinel group has 20 many oxides, is common but only have little number.The structural formula of spinel group is AB2O4, and A represents divalent-metal ion here, for example magnesium, iron, nickel, manganese and/or zinc, and B represents trivalent metal ion, for example aluminium, iron, chromium or manganese.In raw material of the present invention, add and have electric smelting aluminum-spinel and rich aluminum-spinel, spinel add the remarkable performance that increases alumina refractory, reduced the cost of furnace lining.Spinel is mainly used in ladle lining, strike plate, gas permeable brick, brick cup, the mouth of a river, dreg blocking weir, spray gun and slide plate.The overwhelming majority of these mould material is all to utilize silicon powder to reduce the special benefits of shearing force, mould material can be pumped, and not show swollen property flow behavior, and it is solid-state that swollen property flow behavior can make material become in flexible pipe.Existence that can pumping component due to silicon oxide and other can reduce hot strength greatly, develops this high-purity mould material without swollen property flow behavior.The experimental study of high-purity fine substrate material has produced novel active oxidation alumina-spinelle product aluminium-aluminum-spinel matter ladle direct current mould material.This product innovation is used to substitute the thin component of high purity aluminium oxide-spinel refractory.Make mould material there is low opposing shear stress, can be pumped.
Claims (6)
1. magnesia spinel matter ladle direct current mould material, is characterized in that being made up of the raw material of following mass component: white fused alumina 58～75%, electric smelting aluminum-spinel 7～12%, rich aluminum-spinel 10～20%, α-Al
2o
33～7%, aluminate cement 2～4%, composite water-reducing agent 0.1～0.3%.
2. magnesia spinel matter ladle direct current mould material according to claim 1, is characterized in that: by white fused alumina 67%, electric smelting aluminum-spinel 10%, rich aluminum-spinel 15%, α-Al
2o
35%, aluminate cement 2.8%, composite water-reducing agent 0.2% form.
3. magnesia spinel matter ladle direct current mould material according to claim 2, is characterized in that: described white fused alumina consist of 8～10 μ m10%, 5～8 μ m10%, 3～5 μ m12%, 1～3 μ m10%, 0-1 μ m25%.
4. magnesia spinel matter ladle direct current mould material according to claim 3, is characterized in that: described electric smelting aluminum-spinel and rich aluminum-spinel adopt 325 object particles.
5. magnesia spinel matter ladle direct current mould material according to claim 1, is characterized in that: by white fused alumina 58%, electric smelting aluminum-spinel 14%, rich aluminum-spinel 18%, α-Al
2o
36%, aluminate cement 3.7%, composite water-reducing agent 0.3% form.
6. magnesia spinel matter ladle direct current mould material according to claim 1, is characterized in that: by white fused alumina 72%, electric smelting aluminum-spinel 8%, rich aluminum-spinel 12%, α-Al
2o
34%, aluminate cement 3.75%, composite water-reducing agent 0.25% form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410369210.8A CN104130002A (en) | 2014-07-30 | 2014-07-30 | Magnesium spinel ladle direct current castable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410369210.8A CN104130002A (en) | 2014-07-30 | 2014-07-30 | Magnesium spinel ladle direct current castable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104130002A true CN104130002A (en) | 2014-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410369210.8A Pending CN104130002A (en) | 2014-07-30 | 2014-07-30 | Magnesium spinel ladle direct current castable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111995417A (en) * | 2020-08-21 | 2020-11-27 | 浙江锦诚新材料股份有限公司 | Magnesium aluminate spinel castable for aluminum melting furnace |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295460A (en) * | 2010-06-28 | 2011-12-28 | 淄博海泰高温材料科技有限公司 | Making method of high-strength alumina magnesia spinel pouring material for ladles |
| CN103553643A (en) * | 2013-09-30 | 2014-02-05 | 萍乡市京祥实业有限公司 | Compact electro-fused corundum-spinel ladle casting material |
-
2014
- 2014-07-30 CN CN201410369210.8A patent/CN104130002A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295460A (en) * | 2010-06-28 | 2011-12-28 | 淄博海泰高温材料科技有限公司 | Making method of high-strength alumina magnesia spinel pouring material for ladles |
| CN103553643A (en) * | 2013-09-30 | 2014-02-05 | 萍乡市京祥实业有限公司 | Compact electro-fused corundum-spinel ladle casting material |
Non-Patent Citations (1)
| Title |
|---|
| 宋希文 等: "《耐火材料概论》", 28 February 2009, article "耐火材料概论", pages: 201-202 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111995417A (en) * | 2020-08-21 | 2020-11-27 | 浙江锦诚新材料股份有限公司 | Magnesium aluminate spinel castable for aluminum melting furnace |
| CN111995417B (en) * | 2020-08-21 | 2022-10-25 | 浙江锦诚新材料股份有限公司 | Magnesium aluminate spinel castable for aluminum melting furnace |
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Application publication date: 20141105 |