CN105801130A - Composite material for ladle - Google Patents
Composite material for ladle Download PDFInfo
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- CN105801130A CN105801130A CN201410839062.1A CN201410839062A CN105801130A CN 105801130 A CN105801130 A CN 105801130A CN 201410839062 A CN201410839062 A CN 201410839062A CN 105801130 A CN105801130 A CN 105801130A
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- Prior art keywords
- fused magnesite
- ladle
- alumina
- particle diameter
- fine powder
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- 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.)
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- Compositions Of Oxide Ceramics (AREA)
Abstract
The invention discloses a composite material for ladle. The composite material comprises the following main components: fused magnesia, fused magnesia fine powder, alumina, brown fused alumina, titanium dioxide, graphite, phenolic resin, an anti-oxidant, and a composite additive. Each component of the material is proportioned, particle sizes and preparation technology are selected, so that oxidation, sudden cooling and heating resisting performance of the composite material are substantially improved, and the purposes for prolonging service life of the ladle and reducing cost are realized.
Description
Technical field
The present invention relates to technical field of ferrous metallurgy, particularly relate to a kind of ladle carbonaceous composite.
Background technology
Ladle is in tapping process, owing to slag remains in a certain fixed position, after molten steel is drained, along with sharp temperature drop and air enter, deslagging position shrinkage ratio strengthens, and traditional product causes, because temperature decline shrinkage stress is big, peeling of bursting apart, and affects the service life of ladle.
Therefore, for meeting the instructions for use of steel mill, need a kind of composite that can meet ladle deslagging position antioxidation, resistance to rapid heat cycle in the market.
Summary of the invention
For meeting customer need, extend the service life of ladle, improve the performance of its antioxidation, resistance to rapid heat cycle, the invention provides a kind of ladle composite.
One, the ladle deslagging position composite that the present invention proposes, it includes following components in percentage by weight:
Fused magnesite 50-65%
Fused magnesite fine powder 6-12%
Alumina 5-10%
Brown Alundum 3-7%
Titanium dioxide 2-5%
Graphite 6-10%
Antioxidant 1-3%
Compound additive 3-7%
Phenolic resin 3-5%
Preferably, in described fused magnesite and fused magnesite fine powder, magnesian content is more than 97%；
Preferably, in described fused magnesite, particle diameter is the fused magnesite of 3-6mm: particle diameter is the ratio of the fused magnesite of 0-3mm is 2:3；
Preferably, the particle diameter of described fused magnesite fine powder is less than 0.088mm；
Preferably, in described Alumina, the content of aluminium oxide is more than 88%, and the particle diameter of Alumina is less than 3mm；
Preferably, in described Brown Alundum, the content of aluminium oxide is more than 95%, and the particle diameter of Brown Alundum is less than 1mm；
Separately below each component is analyzed:
1, magnesia
Due to the periclase that is mainly composed of of magnesia raw material, the good base portion of high temperatures introduces certain fused magnesite fine powder, it is possible to improve agglutinating property, and fused magnesite impurity is few, is not likely to produce low melt-phase.
[Microsoft user 1]
[Microsoft user 2]
The magnesia that the present invention selects is fused magnesite, and wherein magnesian content is more than 97%.
2, Alumina
Alumina with corundum and mullite for principal crystalline phase, Stability Analysis of Structures.The ability that Alumina is antiacid, basic clinker corrodes is strong, and elevated temperature strength is high, is widely used in iron and steel, the industry such as coloured, [Microsoft user 3].
Alumina in the present invention is main and fused magnesite secondary bond [Microsoft user 4] in applied at elevated temperature process, and the present invention adds Brown Alundum and titanium dioxide fine powder in the composite, to improve base portion oxidative attack's energy further.
3, Brown Alundum
Brown Alundum main chemical is AL2O3, and its content is at 94.5%-97%, another containing a small amount of Fe, Si, Ti etc..Brown Alundum has purity height, advantages of good crystallization, and mobility is strong, and linear expansion coefficient is low, corrosion resistant feature.
4, graphite
[Microsoft user 5].The present invention adopts-197 graphite, owing to graphite is in use easily oxidized, therefore according to experiment adding on the basis of multiple antioxidant, controls the content of carbon at 6-10%.
5, antioxidant
The antioxidant of the present invention comprises boron carbide.Primarily serve the protection to carbon, it is prevented that the effect that carbon is oxidized.
6, compound additive
The compound additive of the present invention is almag, and a small amount of addition is remarkably improved graphite antioxygenic property.
7, bonding agent
The present invention adopts phenolic resin to make the bonding agent of refractory material.
Ladle deslagging position provided by the invention carbonaceous composite, selected and preparation technology by the proportioning of feed components and particle diameter, substantially increasing the antioxidation of composite, heat impact strength, thus reaching to improve the service life of ladle, saving the purpose of cost.
Detailed description of the invention
Embodiment 1:
A kind of ladle composite, it includes following components in percentage by weight:
Fused magnesite 3-6mm24%
Fused magnesite≤3mm36%
Fused magnesite fine powder≤0.088mm6%
Alumina≤3mm5%
Brown Alundum≤1mm4%
Titanium dioxide 6.5%
Graphite 10%
Boron carbide 1%
Al-Mg alloy powder 4%
Phenolic resin 3.5%
In described fused magnesite and fused magnesite fine powder, magnesian content is more than 97%；
In described Alumina, the content of aluminium oxide is more than 88%；
In described Brown Alundum, the content of aluminium oxide is more than 95%；
Described graphite is-197 graphite；
The above; it is only the present invention preferably detailed description of the invention; but protection scope of the present invention is not limited thereto; any those familiar with the art is in the technical scope that the invention discloses; it is equal to replacement according to technical scheme and inventive concept thereof or is changed, all should be encompassed within protection scope of the present invention.
Claims (3)
1. a ladle composite, it is characterised in that include following components in percentage by weight:
Fused magnesite 50-65%
Fused magnesite fine powder 6-12%
Alumina 5-10%
Brown Alundum 3-7%
Titanium dioxide 2-5%
Graphite 6-10%
Antioxidant 1-3%
Compound additive 3-7%
Phenolic resin 3-3.5%.
2. ladle composite as claimed in claim 1, it is characterised in that described fused magnesite and in fused magnesite fine powder magnesian content more than 97%；In described fused magnesite, particle diameter is the fused magnesite of 3-6mm: particle diameter is the ratio of the fused magnesite of 0-3mm is 2:3；The particle diameter of described fused magnesite fine powder is less than 0.088mm.
3. ladle composite as claimed in claim 1, it is characterised in that in described Alumina, the content of aluminium oxide is more than 88%, and the particle diameter of Alumina is less than 3mm；In described Brown Alundum, the content of aluminium oxide is more than 95%, and the particle diameter of Brown Alundum is less than 1mm；The particle diameter of described tar asphalt powder is less than 0.088mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839062.1A CN105801130A (en) | 2014-12-30 | 2014-12-30 | Composite material for ladle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410839062.1A CN105801130A (en) | 2014-12-30 | 2014-12-30 | Composite material for ladle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105801130A true CN105801130A (en) | 2016-07-27 |
Family
ID=56981039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410839062.1A Pending CN105801130A (en) | 2014-12-30 | 2014-12-30 | Composite material for ladle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105801130A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110128118A (en) * | 2018-02-09 | 2019-08-16 | 维苏威美国公司 | Fire proofing composition and anti-oxidant barrier layer in situ |
-
2014
- 2014-12-30 CN CN201410839062.1A patent/CN105801130A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110128118A (en) * | 2018-02-09 | 2019-08-16 | 维苏威美国公司 | Fire proofing composition and anti-oxidant barrier layer in situ |
| CN110128118B (en) * | 2018-02-09 | 2023-02-28 | 维苏威英国有限公司 | Refractory composition and in-situ oxidation resistant barrier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160727 |