CN104193359A - Special corundum self-flowing casting material for stainless steel ladle and construction method of special corundum self-flowing casting material - Google Patents
Special corundum self-flowing casting material for stainless steel ladle and construction method of special corundum self-flowing casting material Download PDFInfo
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- CN104193359A CN104193359A CN201410406375.8A CN201410406375A CN104193359A CN 104193359 A CN104193359 A CN 104193359A CN 201410406375 A CN201410406375 A CN 201410406375A CN 104193359 A CN104193359 A CN 104193359A
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Abstract
The invention discloses a special corundum self-flowing casting material for stainless steel ladle and a construction method of the special corundum self-flowing casting material. The special corundum self-flowing casting material comprises the following components in percentage by weight: brown corundum, fine brown corundum powder, recycled fine corundum powder, recycled fine air brick powder and pure calcium aluminate cement, and a dispersing agent and water further need to be added in construction. In construction, a mold needs to be constructed, the water, the dispersing agent and the self-flowing casting material which are well stirred are poured into the mold, and the material can flow through any surface, can be filled in any space and can be rapidly bonded with residual materials. The special corundum self-flowing casting material for stainless steel ladle, which is disclosed by the invention, is good in high-temperature resistance and can meet the high-temperature condition of the stainless steel ladle.
Description
Technical field
The present invention relates to technical field of refractory materials, relate in particular to the special-purpose corundum gravity flow pouring of a kind of stainless steel ladle and constructional method thereof.
Background technology
Gravity flow pouring material, refers to that it is feature that low cement, ultra-low cement or cement refractory castable be take its mixed mobility, and the refractory castable with this mobility is without applying that external force can flow and degassed, and without obviously segregation.Because gravity flow pouring material has good flow characteristics, caused in recent years people's concern.
Corundum pouring material is suitable for around Ladle Bottom and brick cup, the joint filling of electric furnace top.When charging or discharging, be all subject to shock in various degree for High Temperature Furnaces Heating Apparatus, make the be damaged repairing at position of refractory brick or cast.Especially do not stop production and rush to repair furnace wall, furnace roof, stove gate, furnace bottom, water pipe bundling, its feature is to have temperature to construct, and does not need regular baker, the temperature-raising method of generally relieving, antiacid alkaline residue liquid, anti-oxidant, antiscour.
The mobility of mould material should be subject to the impact of cement, silicon powder grain mixture ratio and dispersion agent very large.
General ordinary steel water temp low (1560 ℃), molten steel is thick, and common corundum self-flowing material can solve this technique, but stainless steel temperature is up to 1630 ℃ of left and right, and molten steel is thin, and temperature is high, easily infiltration, traditional corundum self-flowing material cannot meet the requirement of stainless steel production technique.
Summary of the invention
The technical problem existing based on background technology, the present invention proposes the special-purpose corundum gravity flow pouring of a kind of stainless steel ladle and constructional method thereof, effectively utilized recovery corundum, reduced production cost, meet National Sustainable Development Strategies requirement, can effectively fill the gap filler between iron and steel kiln magnesia carbon brick and gas permeable brick exchange pocket block, what can be used for stainless steel ladle changes pocket block gas permeable brick special-purpose thermal insulation.
The present invention proposes the special-purpose corundum gravity flow pouring material of a kind of stainless steel ladle, and it comprises the component of following weight percent:
Preferably, when construction, also need to add the dispersion agent of above-mentioned gravity flow pouring material weight percent 0.05-0.12% and the water of 5-6%.
Described dispersion agent is dispersed aluminum oxide.
Described recovery corundum and reclaim gas permeable brick fine powder by reclaimed materials through labor cleaning, selected, Mechanical Crushing, screening, classify, be ground to 325 order nano level superfine powders and make, described recovery corundum and recovery gas permeable brick fine powder can have been filled up brown corundum aggregate space, increase the volume density of product, strengthened the flowing property of product.
The main component of described recovery gas permeable brick is corundum, spinel, electrosmelted magnesite clinker, Reactive alumina, chromium compounds, pure calcium aluminate cement, water reducer, spraying aluminium powder and explosion-proof fiber, add recovery gas permeable brick not only to save cost, also the resistance to elevated temperatures of mould material is had to obvious lifting, in raw material, do not need separately to add explosion-proof fiber, do not need to add the high temperature resistant fillers such as silicon carbide yet, it is high temperature resistant more than 1700 ℃ that mould material prepared by the present invention just can reach, during construction, also only need to add on a small quantity conventional dispersion agent aluminum oxide, just can reach good dispersiveness.
The impact of the mould material that in following table, the add-on of detailed analysis recovery gas permeable brick fine powder is prepared the present invention.
When other raw material preparations and construction, comprise:
Recovery gas permeable brick fine powder described in following table by reclaimed materials through labor cleaning, selected, Mechanical Crushing, screening, classify, be ground to 325 order nano level superfine powders and make.
It is known as shown above: in the situation that other conditions are constant, there is remarkable increase in the presetting period of gravity flow pouring material prepared by the present invention along with reclaiming the increase of the add-on of gas permeable brick fine powder and dispersion agent aluminum oxide, and the refractory temperature of gravity flow pouring material prepared by the present invention is significantly increased along with reclaiming the increase of the add-on of gas permeable brick fine powder.
In the add-on that reclaims gas permeable brick fine powder, it is 5% of raw material percent of total, dispersion agent aluminum oxide add-on be raw material percent of total 0.1% time, the refractory temperature of gravity flow pouring material of the present invention is 1750 ℃, the presetting period is about 4.5 hours, good fluidity, this formula is the most economical.
During construction, need to prop up mould, adding the gravity flow pouring material that water, dispersion agent is stirred, inject in mould, just can flow through any surface and fill any space of material, and bonding rapidly with former surplus material, do not need to vibrate, noiselessness reduces workman's labour intensity simultaneously.
This programme is than the usefulness of traditional scheme: the present invention has used a small amount of recovery corundum and reclaimed gas permeable brick fine powder, meet National Sustainable Development Strategies requirement, improved the resistance to elevated temperatures of mould material simultaneously, and only need to add the seldom dispersion agent adjusting function of amount, just can guarantee the mobility of product; Construction does not simply need vibration, and noiselessness reduces workman's labour intensity simultaneously.
Embodiment
Embodiment 1:
The present invention proposes the special-purpose corundum gravity flow pouring material of a kind of stainless steel ladle, and it comprises the component of following weight percent:
When construction, also need to add the dispersed aluminum oxide of above-mentioned gravity flow pouring material weight percent 0.12% and 5% water;
During construction, need to prop up mould, adding the gravity flow pouring material that water, dispersion agent is stirred, inject in mould, just can flow through any surface and fill any space of material, and bonding rapidly with former surplus material, do not need to vibrate, noiselessness reduces workman's labour intensity simultaneously.
Embodiment 2:
The present invention proposes the special-purpose corundum gravity flow pouring material of a kind of stainless steel ladle, and it comprises the component of following weight percent:
When construction, also need to add the dispersed aluminum oxide of above-mentioned gravity flow pouring material weight percent 0.1% and 5.5% water;
During construction, need to prop up mould, adding the gravity flow pouring material that water, dispersion agent is stirred, inject in mould, just can flow through any surface and fill any space of material, and bonding rapidly with former surplus material, do not need to vibrate, noiselessness reduces workman's labour intensity simultaneously.
Embodiment 3:
The present invention proposes the special-purpose corundum gravity flow pouring material of a kind of stainless steel ladle, and it comprises the component of following weight percent:
When construction, also need to add the dispersed aluminum oxide of above-mentioned gravity flow pouring material weight percent 0.05% and 6% water;
During construction, need to prop up mould, adding the gravity flow pouring material that water, dispersion agent is stirred, inject in mould, just can flow through any surface and fill any space of material, and bonding rapidly with former surplus material, do not need to vibrate, noiselessness reduces workman's labour intensity simultaneously.
Embodiment 1-3 is detected:
This detects data only for above-mentioned detection sample.
The above; it is only preferably embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; according to technical scheme of the present invention and inventive concept thereof, be equal to replacement or changed, within all should being encompassed in protection scope of the present invention.
Claims (5)
1. the special-purpose corundum gravity flow pouring material of stainless steel ladle, is characterized in that, comprises the component of following weight percent:
Palm fibre corundum particle diameter≤1 millimeter 15-40%
Palm fibre corundum fine powder particle diameter 325 order 40-70%
Reclaim corundum fine powder particle diameter 325 order 4-8%
Reclaim gas permeable brick fine powder particle diameter 325 order 3-5%
Pure calcium aluminate cement 3-10%.
2. a constructional method for the special-purpose corundum gravity flow pouring material of stainless steel ladle, is characterized in that, comprises the following steps: the first step, water, dispersion agent are added to gravity flow pouring material, and stir; Second step, a good mould, injects the gravity flow pouring material being stirred in mould; The 3rd step, waits gravity flow pouring material and former surplus material bonding.
3. the constructional method of the special-purpose corundum gravity flow pouring material of stainless steel ladle as claimed in claim 2, it is characterized in that, the add-on of described dispersion agent is the 0.05-0.12% of described gravity flow pouring material weight, and the add-on of water is the 5-6% of described gravity flow pouring material weight.
4. the constructional method of the special-purpose corundum gravity flow pouring material of stainless steel ladle as claimed in claim 2, is characterized in that, described dispersion agent is dispersed aluminum oxide.
5. the special-purpose corundum gravity flow pouring material of stainless steel ladle as claimed in claim 1, it is characterized in that, described recovery corundum and reclaim gas permeable brick fine powder by reclaimed materials through labor cleaning, selected, Mechanical Crushing, screening, classify, be ground to 325 order nano level superfine powders and make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410406375.8A CN104193359B (en) | 2014-08-18 | 2014-08-18 | A kind of special corundum gravity flow pouring material of stainless steel ladle and constructional method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410406375.8A CN104193359B (en) | 2014-08-18 | 2014-08-18 | A kind of special corundum gravity flow pouring material of stainless steel ladle and constructional method thereof |
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| CN104193359A true CN104193359A (en) | 2014-12-10 |
| CN104193359B CN104193359B (en) | 2016-01-13 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104529493A (en) * | 2015-01-12 | 2015-04-22 | 上海宝明耐火材料有限公司 | Steel ladle working layer composite precast block and preparation method thereof |
| CN105294137A (en) * | 2015-12-08 | 2016-02-03 | 武汉科技大学 | Disperse alumina micro powder and preparation method thereof |
| CN112592163A (en) * | 2021-03-02 | 2021-04-02 | 北京利尔高温材料股份有限公司 | Ladle upper nozzle castable, prefabricated part and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1182115A (en) * | 1996-11-08 | 1998-05-20 | 淄博科鲁能源动力有限责任公司 | Self-flowing deposited refractory material |
| CN101148363A (en) * | 2007-09-04 | 2008-03-26 | 武汉钢铁(集团)公司 | Large aggregate penetration pouring material and preparation method thereof |
| CN101898897A (en) * | 2010-08-22 | 2010-12-01 | 卿如民 | Quick-drying self-flow iron runner castable material and application method thereof |
-
2014
- 2014-08-18 CN CN201410406375.8A patent/CN104193359B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1182115A (en) * | 1996-11-08 | 1998-05-20 | 淄博科鲁能源动力有限责任公司 | Self-flowing deposited refractory material |
| CN101148363A (en) * | 2007-09-04 | 2008-03-26 | 武汉钢铁(集团)公司 | Large aggregate penetration pouring material and preparation method thereof |
| CN101898897A (en) * | 2010-08-22 | 2010-12-01 | 卿如民 | Quick-drying self-flow iron runner castable material and application method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104529493A (en) * | 2015-01-12 | 2015-04-22 | 上海宝明耐火材料有限公司 | Steel ladle working layer composite precast block and preparation method thereof |
| CN105294137A (en) * | 2015-12-08 | 2016-02-03 | 武汉科技大学 | Disperse alumina micro powder and preparation method thereof |
| CN112592163A (en) * | 2021-03-02 | 2021-04-02 | 北京利尔高温材料股份有限公司 | Ladle upper nozzle castable, prefabricated part and preparation method thereof |
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| Publication number | Publication date |
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| CN104193359B (en) | 2016-01-13 |
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