CN1070933A - Antioxidant coating for graphite electrode - Google Patents
Antioxidant coating for graphite electrode Download PDFInfo
- Publication number
- CN1070933A CN1070933A CN 92110580 CN92110580A CN1070933A CN 1070933 A CN1070933 A CN 1070933A CN 92110580 CN92110580 CN 92110580 CN 92110580 A CN92110580 A CN 92110580A CN 1070933 A CN1070933 A CN 1070933A
- Authority
- CN
- China
- Prior art keywords
- coating
- electrode
- graphite electrode
- silicon
- graphite
- 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.)
- Pending
Links
Landscapes
- Discharge Heating (AREA)
- Anti-Oxidant Or Stabilizer Compositions (AREA)
Abstract
The present invention is a kind of antioxidant coating for graphite electrode, is used on the Graphite Electrodes of electric-arc furnace steelmaking.It is by novolac epoxy, polyvinyl formal acetal, phosphoric acid, silicon carbide, silicon-dioxide, compositions such as aluminum oxide, ferric oxide, boron nitride, norbide.Be a kind of slurries, can with brush, spray, smear or impregnating method primary coating on the electrode surface below the electrode dop, have that adhesive power is big, oxidation-resistance is strong, apply advantage easily, uses graphite electrode consumption of the present invention to reduce by 0.8-1.0kg on one ton of steel 7-8kg of original every refining basis.
Description
The present invention relates to oxidation resistant topcoating under the carbon product high temperature, be applicable to be coated on the Graphite Electrodes that electric-arc furnace steelmaking uses, play the anti-oxidation protection effect.
The Graphite Electrodes that Electric furnace steel making is used is worked in the electric furnace arrangement for producing steel of temperature up to oxygen enrichment more than 1600 ℃; Electrode also ceaselessly moves up and down, regulates best power supply position; During reinforced and tapping, thermode need rise and be exposed in the air acute coldly, thereby the graphite electrode surface oxidational losses is very serious.According to investigations, one ton of average power consumption utmost point of steel of every refining 7-8kg expends nearly 60 yuan, so the consumption of Graphite Electrodes becomes an important technology economic target of Electric furnace steel making.Has crucial meaning so reduce the consumption of Electric furnace steel making Graphite Electrodes.
Since the fifties, in order to prevent Graphite Electrodes surface oxidation at high temperature, a large amount of research work have been carried out both at home and abroad, as applying the anti-oxidation protection layer at electrode surface.Because Graphite Electrodes working conditions in electric arc furnace is very abominable, requires electrode coating not only to have good high temperature resistance, cold, the causus property of anti-play and certain mechanical strength, also needing has good adhesive power with electrode.
Europe patent EP0134769 mullite, Sic and SiO
2The blackwash of making is coated in the good fire-resistant oxidation resistant coating of formation on the electrode surface, but this coating protection film can come off under the steel-making condition from electrode surface, so do not obtain in industrial application.
CN103585A has proposed a kind of carbon product antioxidant coating, and it comprises refractory materials and binding agent, and coating is made up of bed material and topcoating.Bed material mainly is a boride, and topcoating is refractory oxide Al
2O
3, SiO
2, MgO and carbide or nitride, use this coating can stick to graphite electrode surface, good in oxidation resistance securely according to reports, can save electrode 15-25%.Need two roads to apply operation during use, apply bed material earlier, do or dried slightly after, be coated with second layer topcoating, operation is trouble.
The objective of the invention is to seek a kind of new graphite electrode anit-oxidizing coating, it has economy, effective, the advantage that easy to use, primary coating becomes is a kind of high temperature resistant, anti-oxidant, non-conductive refractory coating that cohesiveness is strong, is coated in the following graphite electrode surface of electrode dop.
Coating of the present invention is made up of binding agent and high-temperature oxidation resistant electrical insulator material, its composition comprises novolac epoxy, polyvinyl formal acetal, phosphoric acid or also has boric acid, borax binding material, comprises silicon carbide, silicon-dioxide, aluminum oxide, boron nitride, norbide, ferric oxide, fire-resistant anti-oxidant material or also has boron-containing glass, calcium oxide.
This system component by weight percentage, novolac epoxy 6-20, polyvinyl formal acetal 4-15, phosphatase 11 0-20, boric acid 0-15, borax 0-5, silicon-dioxide 4-14, boron nitride 4-14, norbide 7-12, silicon carbide 4-13, aluminum oxide 6-15, ferric oxide 3.7-15, boron-containing glass 0-0.3, calcium oxide 0-3.2.Wherein the granularity 280-320 order of used solid material is for well.
The coating that is mixed with is the grey slurries, and concentration per minute 25-30 drips, PH1-2.
Coating method can be with brushing, spray, smear or the impregnating method being coated in graphite electrode surface cold or heat, and electrode surface should be cleaned out earlier, and coating thickness is 0.10-0.30mm.
Effect with this coating is to use 36 hours 15 minutes, and one ton of steel of every refining is saved 10-15% on the basis of former consumption Graphite Electrodes 7-8kg.
This coating embodiment forms (weight %) as table 1.
Fine by coating effect on the ∮ 350-400mm Graphite Electrodes of the Hubei 5-10 of two steel mills ton electric furnace that table 1 proportioning makes, use that dope layer adheres to firmly more than 36 hours, do not have the cavity, do not come off, graphite electrode consumption on the basis of one ton of steel 7-8kg of original every refining, on average reduce 0.8-1.0kg.
Table 1 antioxidant coating for graphite electrode proportioning
Claims (2)
1, a kind of graphite electrode anit-oxidizing coating, comprise refractory materials and binding agent, it is characterized in that by novolac epoxy, polyvinyl formal acetal, phosphoric acid, silicon carbide, silicon-dioxide, aluminum oxide, boron nitride, norbide, ferric oxide or also have boric acid, borax, calcium oxide and boron-containing glass to form that its weight percent composition is:
Novolac epoxy 6-20
Polyvinyl formal acetal 4-15
Phosphatase 11 0-20
Boric acid 0-15
Borax 0-5
Silicon-dioxide 4-14
Boron nitride 4-14
Norbide 7-12
Silicon carbide 4-13
Aluminum oxide 6-15
Ferric oxide 3.7-15
Boron-containing glass 0-0.3
Calcium oxide 0-3.2
Amount to 100%.
2, coating as claimed in claim 1, the granularity that it is characterized in that used solid material is the 280-320 order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92110580 CN1070933A (en) | 1992-09-18 | 1992-09-18 | Antioxidant coating for graphite electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92110580 CN1070933A (en) | 1992-09-18 | 1992-09-18 | Antioxidant coating for graphite electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1070933A true CN1070933A (en) | 1993-04-14 |
Family
ID=4944884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92110580 Pending CN1070933A (en) | 1992-09-18 | 1992-09-18 | Antioxidant coating for graphite electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1070933A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059457C (en) * | 1995-08-02 | 2000-12-13 | 石秀田 | Technology for preparation of oxidation-preventive dip of graphite electrode |
| CN100390103C (en) * | 2005-06-28 | 2008-05-28 | 王玉岫 | Antioxidant for graphite and graphite-containing product |
| CN100534957C (en) * | 2007-08-08 | 2009-09-02 | 郑州华硕精密陶瓷有限公司 | Method for protecting vulnerable graphite piece |
| CN101250462B (en) * | 2008-03-28 | 2011-11-16 | 西北有色金属研究院 | Rare metal high-heat anti-oxidation lubricating paint and preparation method thereof |
| CN104341172A (en) * | 2013-07-30 | 2015-02-11 | 海门市海菱碳业有限公司 | Graphite product anti-oxidant |
| CN105090497A (en) * | 2015-08-20 | 2015-11-25 | 无锡中强电碳有限公司 | Graphite sealing ring |
| CN105368191A (en) * | 2015-12-10 | 2016-03-02 | 太仓贝斯特机械设备有限公司 | Anti-freezing corrosion-resistant aluminum rod |
| CN105837231A (en) * | 2016-03-24 | 2016-08-10 | 山东奥昱翔碳化硅科技有限公司 | Silicon carbide functionalized film material and preparation method thereof |
| CN110002839A (en) * | 2019-05-17 | 2019-07-12 | 郑州市瑞沃耐火材料有限公司 | Graphite electrode antioxidant coating in electric furnace smelting |
| CN111548657A (en) * | 2020-06-24 | 2020-08-18 | 大同通扬碳素有限公司 | Graphite electrode coating and preparation method thereof |
| CN111892833A (en) * | 2020-08-14 | 2020-11-06 | 北京中科原创节能环保科技有限公司 | Superconductive graphite electrode nano antioxidant and preparation method thereof |
-
1992
- 1992-09-18 CN CN 92110580 patent/CN1070933A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059457C (en) * | 1995-08-02 | 2000-12-13 | 石秀田 | Technology for preparation of oxidation-preventive dip of graphite electrode |
| CN100390103C (en) * | 2005-06-28 | 2008-05-28 | 王玉岫 | Antioxidant for graphite and graphite-containing product |
| CN100534957C (en) * | 2007-08-08 | 2009-09-02 | 郑州华硕精密陶瓷有限公司 | Method for protecting vulnerable graphite piece |
| CN101250462B (en) * | 2008-03-28 | 2011-11-16 | 西北有色金属研究院 | Rare metal high-heat anti-oxidation lubricating paint and preparation method thereof |
| CN104341172B (en) * | 2013-07-30 | 2016-03-16 | 海门市海菱碳业有限公司 | A kind of graphite product antioxidant |
| CN104341172A (en) * | 2013-07-30 | 2015-02-11 | 海门市海菱碳业有限公司 | Graphite product anti-oxidant |
| CN105090497A (en) * | 2015-08-20 | 2015-11-25 | 无锡中强电碳有限公司 | Graphite sealing ring |
| CN105368191A (en) * | 2015-12-10 | 2016-03-02 | 太仓贝斯特机械设备有限公司 | Anti-freezing corrosion-resistant aluminum rod |
| CN105837231A (en) * | 2016-03-24 | 2016-08-10 | 山东奥昱翔碳化硅科技有限公司 | Silicon carbide functionalized film material and preparation method thereof |
| CN105837231B (en) * | 2016-03-24 | 2018-05-04 | 山东奥昱翔碳化硅科技有限公司 | Carborundum functional membrane material and preparation method thereof |
| CN110002839A (en) * | 2019-05-17 | 2019-07-12 | 郑州市瑞沃耐火材料有限公司 | Graphite electrode antioxidant coating in electric furnace smelting |
| CN111548657A (en) * | 2020-06-24 | 2020-08-18 | 大同通扬碳素有限公司 | Graphite electrode coating and preparation method thereof |
| CN111892833A (en) * | 2020-08-14 | 2020-11-06 | 北京中科原创节能环保科技有限公司 | Superconductive graphite electrode nano antioxidant and preparation method thereof |
| CN111892833B (en) * | 2020-08-14 | 2022-01-07 | 北京中科原创节能环保科技有限公司 | Superconductive graphite electrode nano antioxidant and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1012621B (en) | Antioxidation protective coating for carbon articles | |
| CN1070933A (en) | Antioxidant coating for graphite electrode | |
| CN103113120B (en) | Phosphate-combined iron runner spraying paint for hot-state repairing | |
| CN1035835A (en) | Antioxidant protective paint for carbon product | |
| CN112028613A (en) | Magnesia carbon brick using catalyst-added phenolic resin | |
| CN113461418B (en) | Slag corrosion resistant coating for carbon-free ladle lining and preparation method thereof | |
| GB2100744A (en) | Heat-resistant inorganic composition | |
| CN110590345A (en) | Repair material for intermediate frequency furnace and preparation method thereof | |
| CN109332941B (en) | Corrosion-resistant high-conductivity exothermic welding flux | |
| CN110002839A (en) | Graphite electrode antioxidant coating in electric furnace smelting | |
| US4530853A (en) | Non-conducting oxidation retardant coating composition for carbon and graphite | |
| CN111620675A (en) | High-strength aluminum-permeation-resistant castable and preparation method thereof | |
| CN1050890A (en) | Fire-resistant oxidation resistant coating | |
| CN114702848A (en) | Coating slurry for graphite crucible and preparation and application methods thereof | |
| KR100490988B1 (en) | Composition of Al2O3-SiC-C typed refractories with high oxidation resistance | |
| KR101743825B1 (en) | Coating agent for protecting of skulls producing | |
| CN110550941B (en) | High-temperature-resistant non-oxidized graphite ceramic material | |
| CN111454595A (en) | High-performance antioxidant coating for high-temperature-resistant magnesia carbon brick and detection method thereof | |
| KR100259979B1 (en) | Spray refractory for repair of refining furnace | |
| CN113354424B (en) | High-spalling-resistance oxygen lance brick and preparation method thereof | |
| CN102320847A (en) | Al4SiC4-Al4Si2C5 refractory material and preparation method thereof | |
| KR100262670B1 (en) | A producing method for coated metal powder for anti-oxidization in carbon containing refractory having an enhanced oxidation resistance and hot strength | |
| CN117164340B (en) | AlON and Al 2 O 3 -ZrO 2 Composite toughening phase, low-carbon magnesia carbon brick and preparation method thereof | |
| JPH0240024B2 (en) | ||
| CN101033145B (en) | Mortar for building blast furnace stack graphite brick |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| 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 |