CN1230529A - Refractory material for the furnace mouth of torpedo vehicle - Google Patents
Refractory material for the furnace mouth of torpedo vehicle Download PDFInfo
- Publication number
- CN1230529A CN1230529A CN 98111216 CN98111216A CN1230529A CN 1230529 A CN1230529 A CN 1230529A CN 98111216 CN98111216 CN 98111216 CN 98111216 A CN98111216 A CN 98111216A CN 1230529 A CN1230529 A CN 1230529A
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- China
- Prior art keywords
- furnace mouth
- refractory
- torpedo
- refractory material
- silicon carbide
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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 refractory material is refractory brick produced with alumina, silicon carbide and carbon as main components and has high heat resistance and erosion resistance. Its use makes the furnace mouth have the same service life as lining bricks, reduces the refractory material consumption, saves the service cost, and raises the utilization rate and production efficiency of car.
Description
The present invention relates to high-temperature refractory, be specially adapted to smelt iron used high-temperature refractory.
At present, all adopt torpedo car to have another name called metal mixer car at Steel Plant's splendid attire and the container that transports molten iron, take off (desulfurization, dephosphorization, desiliconization) when handling when molten iron will carry out three, torpedo car is again to carry out three smelting equipments that take off.In use the refractory materials at furnace mouth of torpedo vehicle position constantly bears the temperature variation that colds and heat succeed each other, and is easy to generate crackle and thermal stresses is peeled off.Especially molten iron carries out three when taking off, and contains FeO, Na in the molten iron
2O, CaO, CaF
2Can be splashed to the surface of refractory materials Deng the molten slag of treatment agent, molten slag also can be seeped into refractory materials inside by the open pore of refractory surface, forms responding layer, causes structure of refractory to peel off, serious erosion of refractory.In when falling the molten iron, the fire door refractory materials is subjected to washing away of slag and molten iron again and corrodes.So the refractory materials at furnace mouth of torpedo vehicle position is a damageable zone, for a long time can not be synchronous with the work-ing life of torpedo car liner tile, have a strong impact on the turnover and the normal production run of torpedo car.
In addition, the used refractory materials of furnace mouth of torpedo vehicle adopts high alumina matter particularly to contain the mould material of heat-resistant steel fiber mostly at present, and its work-ing life is less than 1/2nd of liner tile.Adopted aluminum oxide, silicon carbide castable in recent years abroad, increase work-ing life, because the torpedo car liner all adopts special shaped brick to build by laying bricks or stones, has only fire door, still adopt the mould material constructional method,, influence the construction speed of whole torpedo car owing to need curing time after the cast.When fire door is repaired, curing time is arranged again, all influence the turnover of torpedo car, and maintenance cost is higher.
The purpose of this invention is to provide a kind of furnace mouth of torpedo vehicle brick that high erosion resistant materials is formed that has, be close the work-ing life of fire door brick and liner tile, and easy to maintenance, save time.
The technical scheme that realizes the object of the invention is: it is by aluminum oxide (Al for the refractory materials of furnace mouth of torpedo vehicle
2O
3) raw material, silicon carbide (SiC), the refractory brick that carbon (C) is made for main ingredient.
The refractory brick of manufacturing of the present invention is with special grade bauxite, sillimanite, andaluzite, α-Al
2O
3, material such as corundum is as aluminum oxide (Al
2O
3) raw material.These raw materials can be to Na
2O, FeO, CaO have extremely strong erosion-resisting characteristics, add C raw material--flaky graphite in above-mentioned materials, makes material have good permeability resistance and antistripping, and silicon carbide has high temperature resistant, characteristics such as anti-erosion, wear-resisting, Heat stability is good.For the oxidation of preventing blocking, silicon carbide causes the refractory brick decarburization, peels off, in brick, also need add antioxidant, antioxidant available metal aluminium powder, magnesium powder, silica flour, aluminium-magnesium alloy powder, boron glass powder etc.In addition, add zirconium white (ZrO
2) material at high temperature forms full-bodied glassy phase with the brick melt surface, can confining surface pore, the further oxidation of anti-blocking.
Furnace mouth of torpedo vehicle with the weight percent of its main ingredient of refractory brick is: carbon (C) is 2～20%, and silicon carbide (SiC) is 5～30%, and all the other are aluminum oxide (Al
2O
3) raw material.Antioxidant metal (aluminium powder, magnesium powder, silica flour) is 0.5～6% of a main ingredient gross weight in addition, also can add an amount of zirconium white (ZrO
2) be no more than 5%, because refractory brick is to adopt mechanical pressing, so, add 3.5～6.5% resol and make wedding agent.
The invention will be further described below in conjunction with embodiment.
Embodiment 1
(1) batching:
Alumina raw material 77kg, (wherein high alumina high grade bauxite 15kg, fused corundom 52kg), C-195 scale graphite 5kg, carbide fine powder 18kg, aluminium powder 1.5kg, silica flour 1.5kg, novolac resin 5kg, solidifying agent 0.36kg.
(2) production technique:
With the aggregate of alumina raw material, solidifying agent adds in the cone-type spiral mixing machine, mixes 1-2 minute, adds novolac resin then earlier, remix 5 minutes adds graphite again, and antioxidant aluminium powder, silica flour mixed 2-3 minute, last plus silicon carbide, fine powders such as aluminum oxide continue to mix 5 minutes.The pug that mixes in the cone-type spiral mixing machine is transported to conveyor and mixed in the planetary forced stirrer 5-8 minute again.Pug Sleepy in feed bin expects more than 12 hours, moulding on 500 tons or 1000 tons of friction presses, formed green brick is placed 24 hours laggard kilns and is heat-treated on the brick plate, the thermal treatment top temperature is 230～250 ℃, time in tunnel furnace is 60～70 hours, is product of the present invention after the thermal treatment.
Embodiment 2
Three kinds of main ingredient weight are graphite 2kg as different from Example 1, silicon carbide 30kg, and alumina raw material 68kg, aluminium powder 0.5, zirconium white 3kg, all the other are with embodiment 1.
Embodiment 3
Its three kinds of main ingredient weight are graphite 20kg as different from Example 1, silicon carbide 5kg, and aluminium powder 3kg, silica flour 3kg, all the other are with embodiment 1.
Refractory brick of the present invention has higher high temperature resistant erosion-resisting characteristics, replace the mould material of use at present, make furnace mouth of torpedo vehicle brick and liner tile have close work-ing life, not only reduced the consumption of refractory materials, saved maintenance cost, and accelerated the turnover of torpedo car, improved production efficiency.
Claims (2)
1, a kind of furnace mouth of torpedo vehicle refractory materials is characterized in that it is by aluminum oxide (Al
2O
3) raw material, silicon carbide (SiC), the refractory brick that carbon (C) is made for main ingredient.
2, according to the described refractory materials of claim 1, the weight percent that it is characterized in that its main ingredient is a carbon (C) 5～20%, silicon carbide (SiC) 5～30%, and all the other are aluminum oxide (Al
2O
3) raw material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98111216 CN1230529A (en) | 1998-03-31 | 1998-03-31 | Refractory material for the furnace mouth of torpedo vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98111216 CN1230529A (en) | 1998-03-31 | 1998-03-31 | Refractory material for the furnace mouth of torpedo vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1230529A true CN1230529A (en) | 1999-10-06 |
Family
ID=5221212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98111216 Pending CN1230529A (en) | 1998-03-31 | 1998-03-31 | Refractory material for the furnace mouth of torpedo vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1230529A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102964138A (en) * | 2012-12-12 | 2013-03-13 | 武汉科技大学 | Light-weight Al2O3-SiC-C refractory casting material and preparation method thereof |
| CN102976785A (en) * | 2012-12-12 | 2013-03-20 | 武汉科技大学 | Light Al2O3-SiC-C refractory brick and preparation method thereof |
| CN105481398A (en) * | 2015-12-30 | 2016-04-13 | 宜兴市集创新材料科技有限公司 | Neutral refractory castable |
| CN105481397A (en) * | 2015-12-30 | 2016-04-13 | 宜兴市集创新材料科技有限公司 | Anticorrosive castable |
| CN116283327A (en) * | 2023-03-10 | 2023-06-23 | 安徽瑞泰新材料科技有限公司 | Alumina-silica refractory brick containing corundum ultrafine powder and preparation method thereof |
-
1998
- 1998-03-31 CN CN 98111216 patent/CN1230529A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102964138A (en) * | 2012-12-12 | 2013-03-13 | 武汉科技大学 | Light-weight Al2O3-SiC-C refractory casting material and preparation method thereof |
| CN102976785A (en) * | 2012-12-12 | 2013-03-20 | 武汉科技大学 | Light Al2O3-SiC-C refractory brick and preparation method thereof |
| CN105481398A (en) * | 2015-12-30 | 2016-04-13 | 宜兴市集创新材料科技有限公司 | Neutral refractory castable |
| CN105481397A (en) * | 2015-12-30 | 2016-04-13 | 宜兴市集创新材料科技有限公司 | Anticorrosive castable |
| CN116283327A (en) * | 2023-03-10 | 2023-06-23 | 安徽瑞泰新材料科技有限公司 | Alumina-silica refractory brick containing corundum ultrafine powder and preparation method thereof |
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| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |