CN104177095A - Composite refractory material for ladle - Google Patents
Composite refractory material for ladle Download PDFInfo
- Publication number
- CN104177095A CN104177095A CN201310213118.8A CN201310213118A CN104177095A CN 104177095 A CN104177095 A CN 104177095A CN 201310213118 A CN201310213118 A CN 201310213118A CN 104177095 A CN104177095 A CN 104177095A
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- CN
- China
- Prior art keywords
- mgo
- composite refractory
- refractory material
- ladle
- composite
- Prior art date
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a composite refractory material for ladle. The composite refractory material is a MgO composite material, namely a MgO-Si3N4 composite refractory material layer. Further improvements are as below: the MgO-Si3N4 composite refractory material layer has thickness of 0.4-0.5 mm, and is prepared through combination of fused magnesia (MgO purity no less than 98.2%) and silicon nitride (beta-Si3N4 purity higher than 96.5%). The composite refractory material of the invention has good slag corrosion resistance and thermal shock resistance, does not carburize to clean molten steel, and can significantly improve the cleanliness of steel material.
Description
Technical field
The present invention relates to a kind of Refractory For Steelmaking, relate to specifically a kind of refining ladle slag line refractory materials material.
Background technology
Magnesite refractory is because its anti-slag erosion ability is strong and the free of contamination performance of molten steel is widely used in to ferrous metallurgical industry, but its slag penetration resistance and thermal shock resistance are poor.The high-performance refractory material having both for producing resistance performance of slag corrosion and heat shock resistance, make carbon composite refractory and obtained satisfied effect, but in carbon containing refractory, carbon is easily oxidized, its advantage is weakened and is caused material damage, in addition carbon add pollution molten steel, be unfavorable for the smelting of Clean Steel.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, propose a kind of possess good resistance performance of slag corrosion and thermal shock resistance, can, to carburizing in purifying of steel, not significantly improve the ladle composite refractory of the cleanliness factor of ferrous materials.
The present invention is achieved through the following technical solutions technical object.
A ladle composite refractory is MgO matrix material; Its improvements are: described MgO matrix material is MgO-Si
3n
4composite refractory layer.
Further improve and be: described MgO-Si
3n
4composite refractory bed thickness 0.4～0.5mm.
Further improve and be: described MgO-Si
3n
4composite refractory layer is by electrosmelted magnesite clinker (MgO purity>=98.2%) and silicon nitride powder (β-Si
3n
4purity>=96.5%) be composited.
The present invention compared with prior art, has following positively effect:
1. the present invention is MgO-Si
3n
4composite refractory layer, the heat-shock resistance having had, oxidation-resistance and high physical strength.
2. the present invention is MgO-Si
3n
4composite refractory layer, has good slag penetration resistance, can, to carburizing in purifying of steel, can not significantly improve the cleanliness factor of ferrous materials.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Ladle composite refractory, for MgO matrix material, MgO matrix material is MgO-Si3N4 composite refractory layer, in the present embodiment, MgO-Si3N4 composite refractory bed thickness 0.4～0.5mm, is composited by electrosmelted magnesite clinker (MgO purity >=98.2%) and silicon nitride powder (β-Si3N4 purity >=96.5%).
Claims (3)
1. a ladle composite refractory, is MgO matrix material; It is characterized in that: described MgO matrix material is MgO-Si
3n
4composite refractory layer.
2. ladle composite refractory according to claim 2, is characterized in that: described MgO-Si
3n
4composite refractory bed thickness 0.4～0.5mm.
3. according to the ladle composite refractory described in claim 2 or 3, it is characterized in that: described MgO-Si
3n
4composite refractory layer is by electrosmelted magnesite clinker (MgO purity>=98.2%) and silicon nitride powder (β-Si
3n
4purity>=96.5%) be composited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310213118.8A CN104177095A (en) | 2013-05-27 | 2013-05-27 | Composite refractory material for ladle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310213118.8A CN104177095A (en) | 2013-05-27 | 2013-05-27 | Composite refractory material for ladle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104177095A true CN104177095A (en) | 2014-12-03 |
Family
ID=51958480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310213118.8A Pending CN104177095A (en) | 2013-05-27 | 2013-05-27 | Composite refractory material for ladle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104177095A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277481A (en) * | 2015-10-27 | 2016-01-27 | 武汉钢铁(集团)公司 | Method and device for detecting eroding degree of refractory material |
-
2013
- 2013-05-27 CN CN201310213118.8A patent/CN104177095A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105277481A (en) * | 2015-10-27 | 2016-01-27 | 武汉钢铁(集团)公司 | Method and device for detecting eroding degree of refractory material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141203 |
|
| WD01 | Invention patent application deemed withdrawn after publication |