CN103769571A - Water gap with carbon-free and silicon-free lining layer - Google Patents
Water gap with carbon-free and silicon-free lining layer Download PDFInfo
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- CN103769571A CN103769571A CN201210404455.0A CN201210404455A CN103769571A CN 103769571 A CN103769571 A CN 103769571A CN 201210404455 A CN201210404455 A CN 201210404455A CN 103769571 A CN103769571 A CN 103769571A
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Abstract
The invention discloses a water gap with a carbon-free and silicon-free lining layer. The water gap comprises an outer layer body, an outer layer slag line layer and the lining layer; materials of the outer layer body are formed by following components of, by weight, 14 to 18 parts of flake graphite, 58 to 62 parts of white corundum and 32 to 36 parts of aluminum titanate; materials of the outer layer slag line layer are formed by following components of, by weight, 22 to 26 parts of flake graphite, 50 to 54 parts of zirconium oxide and 26 to 30 parts of aluminum titanate; materials of the lining layer are formed by following components of, by weight, 54 to 58 parts of magnesium aluminate spinel, 16 to 18 parts of light burning aluminum oxide, 12 to 16 parts of light magnesium oxide, 2 to 4 parts of aluminum fluoride, 6 to 8 parts of boron nitride and 4 to 6 parts of phenolic resin; the water gap is formed through compression moulding after mixed granulation is performed on the layers of materials and is formed through anaerobic sintering.
Description
Technical field
The present invention relates to Ferrous Metallurgy technical field of refractory materials, relate in particular to a kind of mouth of a river with carbon less and silicon less inner liner.
Background technology
In the molten steel casting process of steelmaking process, due to oxidation, mouth of a river place is easy to precipitate A l
2o
3, Al
2o
3after precipitation, stop up the mouth of a river, the service life at the mouth of a river is short, has reduced production efficiency.For addressing the above problem, manufacturer has proposed multiple technologies scheme, wherein as 1, argon-blowing method.Although argon-blowing method can effectively prevent Al
2o
3stop up, but the gas spraying into from submersed nozzle causes steel deteriorated, as the increase of plate defect etc.2, adopt CaO-ZrO
2-C material is as anti-blocking liner, and its principle is to utilize Al
2o
3nanocluster and CaO-ZrO
2between-C, reaction forms the erosion that eutectic produces, and can prevent Al
2o
3the generation of precipitation.Although said method has solved mouth of a river Al to a certain extent
2o
3precipitation stop up problem, but along with production efficiency require raising, the casting time of molten steel need to be longer.Existing method can not meet the requirement that production efficiency improves.Although CaO-ZrO
2-C the mouth of a river is very effective to short time direct casting, but along with the growth casting efficiency step-down of time, be mainly that the CaO of mouth of a river internal layer consumes gradually, reduce, and the CaO of liner inside is difficult to diffuse out and Al
2o
3form low molten thing, cause the rear mouth of a river of long-time casting easily to be stopped up, affected equally blocking-proof result.
Publication number is that the Chinese patent application of CN1410195 discloses a kind of carbon less and silicon less nozzle for clean steel, comprise mouth of a river body, carbon less and silicon less inner liner is set in the body of the mouth of a river, and described carbon less and silicon less inner liner is made and is obtained by following method: will comprise that percentage by weight is respectively 65～85% magnesium aluminate spinels, 2～20% light-burned Al
2o
3, 1～5% graphite, 5～10% sintering aids, 5～7% phenolic resins mixes stone roller mud, after compound with mouth of a river body, slag line, through 100～150Mpa isostatic compaction, in 1100～1300 ℃ of nonoxidizing atmospheres, after sintering, obtain carbon less and silicon less nozzle for clean steel.Although this patent application has solved the problem of prior art to a certain extent, because it contains graphite component, still fundamentally do not address the deficiencies of the prior art.
Summary of the invention
The object of the invention is to propose a kind of mouth of a river with carbon less and silicon less inner liner, this mouth of a river overcomes the existing casting mouth of a river easily to be stopped up, and service life is short, thereby affect the shortcoming of production efficiency, in molten steel casting process, should not stop up, long service life, production efficiency is high.
For reaching this object, the present invention by the following technical solutions:
Have a mouth of a river for carbon less and silicon less inner liner, this mouth of a river comprises outer body, outer slag line layer and inner liner, and its ectomesoderm bulk stock is made up of following component in weight fraction: crystalline flake graphite 14-18 part, white fused alumina 58-62 part, aluminium titanates 32-36 part; Outer slag line layer raw material is made up of following component in weight portion: crystalline flake graphite 22-26 part, zirconia 50-54 part, aluminium titanates 26-30 part; Inner liner raw material is made up of following component in weight portion: magnesium aluminate spinel 54-58 part, light-burned Al
2o
316-18 part, light magnesium oxide 12-16 part, aluminum fluoride 2-4 part, boron nitride 6-8 part, phenolic resins 4-6 part; The described mouth of a river is by compression molding after above-mentioned each layer of raw material mixing granulation, and anaerobic sintering forms.
Preferably, described inner liner raw material is made up of following component in weight portion: magnesium aluminate spinel 55-57 part, light-burned Al
2o
316.5-17.5 part, light magnesium oxide 13-15 part, aluminum fluoride 2.5-3.5 part, boron nitride 6.5-7.5 part, phenolic resins 4.5-5.5 part.
Most preferably, inner liner raw material is made up of following component in weight portion: 56 parts of magnesium aluminate spinels, light-burned Al
2o
314 parts of 17 parts, light magnesium oxide, 3 parts of aluminum fluorides, 7 parts of boron nitride, 5 parts, phenolic resins.
The present invention has following beneficial effect:
1) inner liner does not add graphite, make internal layer carbon less and silicon less, by the processability of aluminum fluoride and boron nitride raising inner liner, and improve thermal shock resistance, and fundamentally overcome the existing casting mouth of a river and hold susceptible to plugging defect, in molten steel casting process substantially without dross.
2) magnesium aluminate spinel coefficient of thermal expansion is little, and permeability resistance is good, and molten steel wetability is poor, is difficult for and Al
2o
3react; Light-burned Al
2o
3improve the intensity under liner high temperature.
The specific embodiment
Embodiment mono-
Have a mouth of a river for carbon less and silicon less inner liner, this mouth of a river comprises outer body, outer slag line layer and inner liner, and its ectomesoderm bulk stock is made up of following component in weight fraction: 14 parts of crystalline flake graphites, 62 parts of white fused aluminas, 32 parts of aluminium titanates; Outer slag line layer raw material is made up of following component in weight portion: 22 parts of crystalline flake graphites, 54 parts of zirconias, 26 parts of aluminium titanates; Inner liner raw material is made up of following component in weight portion: 54 parts of magnesium aluminate spinels, light-burned Al
2o
312 parts of 18 parts, light magnesium oxide, 4 parts of aluminum fluorides, 6 parts of boron nitride, 6 parts, phenolic resins, the described mouth of a river is for by compression molding after above-mentioned each layer of raw material mixing granulation, and anaerobic sintering forms.
Embodiment bis-
Have a mouth of a river for carbon less and silicon less inner liner, this mouth of a river comprises outer body, outer slag line layer and inner liner, and its ectomesoderm bulk stock is made up of following component in weight fraction: 18 parts of crystalline flake graphites, 58 parts of white fused aluminas, 36 parts of aluminium titanates; Outer slag line layer raw material is made up of following component in weight portion: 26 parts of crystalline flake graphites, 50 parts of zirconias, 30 parts of aluminium titanates; Inner liner raw material is made up of following component in weight portion: 58 parts of magnesium aluminate spinels, light-burned Al
2o
316 parts of 16 parts, light magnesium oxide, 2 parts of aluminum fluorides, 8 parts of boron nitride, 4 parts, phenolic resins; The described mouth of a river is by compression molding after above-mentioned each layer of raw material mixing granulation, and anaerobic sintering forms.
Embodiment tri-
Have a mouth of a river for carbon less and silicon less inner liner, this mouth of a river comprises outer body, outer slag line layer and inner liner, and its ectomesoderm bulk stock is made up of following component in weight fraction: 16 parts of crystalline flake graphites, 60 parts of white fused aluminas, 34 parts of aluminium titanates; Outer slag line layer raw material is made up of following component in weight portion: 24 parts of crystalline flake graphites, 52 parts of zirconias, 28 parts of aluminium titanates; Inner liner raw material is made up of following component in weight portion: 55 parts of magnesium aluminate spinels, light-burned Al
2o
313 parts of 17.5 parts, light magnesium oxide, 3.5 parts of aluminum fluorides, 6.5 parts of boron nitride, 5.5 parts, phenolic resins; The described mouth of a river is by compression molding after above-mentioned each layer of raw material mixing granulation, and anaerobic sintering forms.
Embodiment tetra-
Have a mouth of a river for carbon less and silicon less inner liner, this mouth of a river comprises outer body, outer slag line layer and inner liner, and its ectomesoderm bulk stock is made up of following component in weight fraction: 16 parts of crystalline flake graphites, 60 parts of white fused aluminas, 34 parts of aluminium titanates; Outer slag line layer raw material is made up of following component in weight portion: 24 parts of crystalline flake graphites, 52 parts of zirconias, 28 parts of aluminium titanates; Inner liner raw material is made up of following component in weight portion: 57 parts of magnesium aluminate spinels, light-burned Al
2o
315 parts of 16.5 parts, light magnesium oxide, 2.5 parts of aluminum fluorides, 7.5 parts of boron nitride, 4.5 parts, phenolic resins; The described mouth of a river is by compression molding after above-mentioned each layer of raw material mixing granulation, and anaerobic sintering forms.
Embodiment five
Have a mouth of a river for carbon less and silicon less inner liner, this mouth of a river comprises outer body, outer slag line layer and inner liner, and its ectomesoderm bulk stock is made up of following component in weight fraction: 16 parts of crystalline flake graphites, 60 parts of white fused aluminas, 34 parts of aluminium titanates; Outer slag line layer raw material is made up of following component in weight portion: 24 parts of crystalline flake graphites, 52 parts of zirconias, 28 parts of aluminium titanates; Inner liner raw material is made up of following component in weight portion: 56 parts of magnesium aluminate spinels, light-burned Al
2o
314 parts of 17 parts, light magnesium oxide, 3 parts of aluminum fluorides, 7 parts of boron nitride, 5 parts, phenolic resins; The described mouth of a river is by compression molding after above-mentioned each layer of raw material mixing granulation, and anaerobic sintering forms.
Claims (3)
1. one kind has the mouth of a river of carbon less and silicon less inner liner, it is characterized in that, this mouth of a river comprises outer body, outer slag line layer and inner liner, and its ectomesoderm bulk stock is made up of following component in weight fraction: crystalline flake graphite 14-18 part, white fused alumina 58-62 part, aluminium titanates 32-36 part; Outer slag line layer raw material is made up of following component in weight portion: crystalline flake graphite 22-26 part, zirconia 50-54 part, aluminium titanates 26-30 part; Inner liner raw material is made up of following component in weight portion: magnesium aluminate spinel 54-58 part, light-burned Al2O3 16-18 part, light magnesium oxide 12-16 part, aluminum fluoride 2-4 part, boron nitride 6-8 part, phenolic resins 4-6 part; The described mouth of a river is by compression molding after above-mentioned each layer of raw material mixing granulation, and anaerobic sintering forms.
2. a kind of mouth of a river with carbon less and silicon less inner liner as claimed in claim 1, it is characterized in that, described inner liner raw material is made up of following component in weight portion: magnesium aluminate spinel 55-57 part, light-burned Al2O316.5-17.5 part, light magnesium oxide 13-15 part, aluminum fluoride 2.5-3.5 part, boron nitride 6.5-7.5 part, phenolic resins 4.5-5.5 part.
3. a kind of mouth of a river with carbon less and silicon less inner liner as claimed in claim 2, it is characterized in that, inner liner raw material is made up of following component in weight portion: 56 parts of magnesium aluminate spinels, 17 parts of light-burned Al2O3,14 parts of light magnesium oxides, 3 parts of aluminum fluorides, 7 parts of boron nitride, 5 parts, phenolic resins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210404455.0A CN103769571A (en) | 2012-10-22 | 2012-10-22 | Water gap with carbon-free and silicon-free lining layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210404455.0A CN103769571A (en) | 2012-10-22 | 2012-10-22 | Water gap with carbon-free and silicon-free lining layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103769571A true CN103769571A (en) | 2014-05-07 |
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ID=50562590
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210404455.0A Pending CN103769571A (en) | 2012-10-22 | 2012-10-22 | Water gap with carbon-free and silicon-free lining layer |
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|---|---|
| CN (1) | CN103769571A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114988855A (en) * | 2022-05-12 | 2022-09-02 | 湖南湘钢瑞泰科技有限公司 | Converter slag-blocking non-fired and non-dipped composite sliding plate brick and preparation method thereof |
-
2012
- 2012-10-22 CN CN201210404455.0A patent/CN103769571A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114988855A (en) * | 2022-05-12 | 2022-09-02 | 湖南湘钢瑞泰科技有限公司 | Converter slag-blocking non-fired and non-dipped composite sliding plate brick and preparation method thereof |
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Application publication date: 20140507 |