CN1544387A - Carbon system aluminium spinel air permeable brick - Google Patents
Carbon system aluminium spinel air permeable brick Download PDFInfo
- Publication number
- CN1544387A CN1544387A CNA2003101150421A CN200310115042A CN1544387A CN 1544387 A CN1544387 A CN 1544387A CN A2003101150421 A CNA2003101150421 A CN A2003101150421A CN 200310115042 A CN200310115042 A CN 200310115042A CN 1544387 A CN1544387 A CN 1544387A
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- CN
- China
- Prior art keywords
- permeable brick
- mgo
- gas permeable
- carbon system
- air permeable
- Prior art date
- 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)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention provides an air brick of aluminum spinelle carbon architecture comprising Al2O3, C, MgO and other constituents, wherein the mass fraction of each components are, Al2O3 55-90%, C 2-16%, MgO 1-20%, and other constituents 2-10% including SiC, SiO2, Fe2O3 and oxidation prevention addition agent, which is Al or Al-Mg alloy and is counted in by the form of Al2O3 and MgO during detecting procedure. The invention increases the length of effective brick and operating life.
Description
Technical field
The invention belongs to field of iron and steel smelting, a kind of aluminate carbon system gas permeable brick particularly is provided, be used for the argon blowing process of smelting iron and steel molten steel.
Technical background
Patent CN1039480C discloses ladle gas permeable brick patent.This gas permeable brick constitutes vent channel with vertical synusia shape slit and ventilates, and its material is chromium one corundum-mullite material that high temperature burns till; The fused corundom 35～75% of the component of this material (weight %): granularity≤3mm, α-Al of granularity＜10um
2O
33～20%, the electrofused mullite 5～30% of granularity≤3mm, the technical pure chromic oxide 0.5～7% of granularity≤0.2mm, the bonding clay of granularity≤0.1mm≤10%.Because this material has stronger Fe when contacting with slag
2O
3Seizure and receptivity, so cause the material working end to be gone bad because of slag penetration; Metamorphic layer volume change and make airway obstruction, the influence ventilation must " burning oxygen " be removed and can be continued use.
The damage of adopting " burning oxygen " to handle material owing to airway obstruction is very serious, burns 10-20mm at least, burns 30-50mm at most, till the gas permeable brick vent channel is unimpeded; When if gas passage is washed into slit thickness broad, molten steel or to melt slag just darker along air flue infiltration, then burn does not have till the tamper always in the air flue; So, just cause waste, influenced whole service life than the length material.
Summary of the invention
The objective of the invention is to: a kind of aluminate carbon system gas permeable brick is provided.Solved the problem of airway obstruction, and improved work-ing life.
The aluminate that the present invention proposes is that the chemical ingredients (massfraction) of gas permeable brick is:
Al
2O
3 55-90％
C 2-16％
MgO 1-20％
Other compositions 2-10%
Other compositions of the present invention comprise SiC, SiO
2, Fe
2O
3, anti-oxidizing agent etc.Anti-oxidizing agent is Al or Al-Mg alloy, is with Al in testing process
2O
3And the form of MgO counts.
The invention has the advantages that: effectively utilized carbon material and be difficult for by molten steel and melt the wetting advantage of slag, and easy-sintering, intensity are big under the aluminate material at high temperature, it is gas permeable brick that the good advantage of anti-simultaneously slag penetration is made aluminate carbon, reduce and melt slag or the infiltration of molten steel in material and ventilative duct, the assurance gas passage is unimpeded, avoided necessary " burning oxygen " operation of adopting, effectively utilized the length of brick body, improved work-ing life owing to airway obstruction.Simultaneously, compare with aluminium zirconium carbon gas permeable brick, the cost of aluminate carbon is lower, and performance is better than fine aluminium carbon gas permeable brick.
Embodiment
Describe for elaborating this patent, giving an actual example.Specific embodiment is as follows:
Mark in the table: label * 1 is SiC, SiO
2, Fe
2O
3Sum.Label * 2 is SiO
2, CaO, Fe
2O
3Sum; The fine aluminium acid salt cement 75 of adding 5% in its sample, the MA76 (Al of adding 20%
2O
3Content is 76% sintering magnesium-aluminium spinel).* 3 is that the slag of 1600 ℃ * 6h soaks experimental result, and wherein (mass percent %) is the slag composition: CaO:51.64, SiO
2: 25.9, Al
2O
3: 10.62, Fe
2O
3: 2.67, MgO:5.74.
For gas permeable brick, one of principal element that influences its work-ing life is exactly anti-slag penetration.If slag penetration is darker, then the slag of Shen Ruing makes the material sex change and forms metamorphic layer, stops up parichnos, must " burning oxygen " handle, and so, will cause deteriorating too much.And if the slag penetration degree of depth is more shallow, then less airway obstruction thing will be broken through by argon gas, can " burn oxygen " and reach the ventilation purpose.The depth of penetration of slag promptly can be found out from table, for existing mould material, the anti-slag penetration layer depth of embodiments of the invention is more shallow, that is to say, the more carbon-free existing mould material of anti-slag penetration is good, the scene that helps gas permeable brick is like this used and is safeguarded, and can therefore improve work-ing life.
Complete processing
The complete processing of aluminate carbonaceous gas permeable brick is because of the different differences to some extent of generation type of gas passage, and existing division is as follows:
1, utilize organism to form the duct ventilation
With resol is wedding agent, and various raw materials are joined in the mud stone roller machine in order, mixes evenly.With plastic strip/or nylon strip install mould by the pore arrangement form; Plastic strip/or the thickness of nylon strip be 0.01mm-0.03mm, width is 10mm-30mm.With the pug of puddling, join in the mould, utilize friction press or hydropress or equal pressing equipment compression moulding, after drying, roasting (mainly being that organism high temperature is removed so that form the duct) are handled, utilize lathe that base substrate is carried out turning by the figure paper size, after the turning drying, get final product according to the assembling of the packaging technology of gas permeable brick.
2, utilize the metal tube ventilation
With resol is wedding agent, and various raw materials are joined in the mud stone roller machine in order, mixes evenly.The metal tube of ventilation is arranged, assemble mould.Pug after calendering is joined in the mould, utilize friction press or hydropress or etc. equipment compression mouldings such as static pressure, after drying is handled, utilize lathe that base substrate is carried out turning by the figure paper size, after carrying out drying after the turning, get final product according to the assembling of the packaging technology of gas permeable brick.
Claims (2)
1, a kind of aluminate carbon system gas permeable brick is characterized in that: by Al
2O
3, C, MgO and other compositions form, the mass percent of each component concentration is: Al
2O
3: 55-90%, C:2-16%, MgO:1-20%, other compositions: 2-10%.
2, according to the described gas permeable brick of claim 1, it is characterized in that: described other compositions comprise SiC, SiO
2, Fe
2O
3, anti-oxidizing agent; Anti-oxidizing agent is Al or Al-Mg alloy, is with Al in testing process
2O
3And the form of MgO counts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310115042 CN1242952C (en) | 2003-11-20 | 2003-11-20 | Carbon system aluminium spinel air permeable brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310115042 CN1242952C (en) | 2003-11-20 | 2003-11-20 | Carbon system aluminium spinel air permeable brick |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1544387A true CN1544387A (en) | 2004-11-10 |
| CN1242952C CN1242952C (en) | 2006-02-22 |
Family
ID=34337226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310115042 Expired - Fee Related CN1242952C (en) | 2003-11-20 | 2003-11-20 | Carbon system aluminium spinel air permeable brick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1242952C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018126937A1 (en) * | 2017-01-09 | 2018-07-12 | 武汉科技大学 | Dispersion-type corundum-spinel air-permeable brick and preparation method therefor |
| CN113458377A (en) * | 2020-03-30 | 2021-10-01 | 宝山钢铁股份有限公司 | Anti-caking tundish breathable water feeding port |
-
2003
- 2003-11-20 CN CN 200310115042 patent/CN1242952C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018126937A1 (en) * | 2017-01-09 | 2018-07-12 | 武汉科技大学 | Dispersion-type corundum-spinel air-permeable brick and preparation method therefor |
| CN113458377A (en) * | 2020-03-30 | 2021-10-01 | 宝山钢铁股份有限公司 | Anti-caking tundish breathable water feeding port |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1242952C (en) | 2006-02-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Gongyi Tongda Zhongyuan Refractory Technology Co., Ltd. Assignor: University of Science and Technology Beijing Contract fulfillment period: 2009.2.10 to 2019.2.10 contract change Contract record no.: 2009110000110 Denomination of invention: Carbon system aluminium spinel air permeable brick Granted publication date: 20060222 License type: General permission Record date: 2009.5.20 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: COMMON LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.2.10 TO 2019.2.10; CHANGE OF CONTRACT Name of requester: GONGYI TONGDA ZHONGYUAN REFRACTORY TECHNOLOGY CO., Effective date: 20090520 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060222 Termination date: 20101120 |