CN103755326B - Anticorrosive high-temperature coating for aluminum electrolysis cell graphite anode steel claw - Google Patents
Anticorrosive high-temperature coating for aluminum electrolysis cell graphite anode steel claw Download PDFInfo
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- CN103755326B CN103755326B CN201310734390.0A CN201310734390A CN103755326B CN 103755326 B CN103755326 B CN 103755326B CN 201310734390 A CN201310734390 A CN 201310734390A CN 103755326 B CN103755326 B CN 103755326B
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Abstract
The invention relates to an anticorrosive high-temperature coating for an aluminum electrolysis cell graphite anode steel claw and belongs to the technical field of production of high-temperature inorganic coatings. The anticorrosive high-temperature coating is prepared from the following raw materials in parts by weight: 15-50 parts of white corundum, 5-80 parts of quartz, 1-10 parts of magnesium oxide, 1-10 parts of calcium oxide, 1-20 parts of ferric oxide, 15-50 parts of zirconia powder and 0-5 parts of dispersing agent. When being coated on the aluminum electrolysis cell graphite anode steel claw, the anticorrosive high-temperature coating can be rapidly cured at normal temperature, and a dense ceramic coating which has a certain thickness and is firmly combined with a steel base material can be formed through high-temperature sintering, so that the hydrogen fluoride corrosion resistance and high-temperature oxidation corrosion resistance of the graphite anode steel claw are improved, and the service life and replacement period of the graphite electrode steel claw are prolonged.
Description
Technical field
The present invention relates to the anticorrosive high-temperature coatings of a kind of aluminum cell graphite anode steel jaw, belong to Heat-resisting Inorganic Coating production technical field.
Background technology
Aluminum cell graphite anode steel jaw easily corrodes under high-temperature fluorination hydrogen operating mode, and Replacement and Repair are frequently the one of the main reasons causing Aluminum Electrolysis Production cost high, account for about 10% of total cost, be each electrolysis aluminum production enterprises will faced by a difficult problem.Therefore, be necessary to be improved prior art completely.High-temperature coatings guard technology due to routine be difficult to realize under the high temperature conditions coating and steel substrate mortise, form fine and close coating, we adopt nano inorganic powder to be main raw material formula, the thermal expansivity of allotment coating the best, with the object close with steel substrate thermal expansivity that reach a high temperature down.
Summary of the invention
Object of the present invention for solving the defect that existing aluminium cell exists, provides a kind of anticorrosive high-temperature coatings of aluminum cell graphite anode steel jaw protecting electrolysis of aluminum channel-section steel pawl just.
To achieve these goals, the present invention adopts following technical scheme:
The anticorrosive high-temperature coatings of a kind of aluminum cell graphite anode steel jaw, it comprises following raw materials by weight portion preparation gained: white fused alumina 15-50, quartzy 5-80, magnesium oxide 1-10, calcium oxide 1-10, ferric oxide 1-20, zirconia powder 15-50, dispersion agent 0-5.
It also comprises inorganic high-temperature agglomerant.
Described white fused alumina is aluminium sesquioxide.
Described dispersion agent is pyrophosphate salt or poly amic acid or tripoly phosphate sodium STPP wherein one or more.
Described inorganic high-temperature agglomerant is the aqueous solution of water glass.
Beneficial effect of the present invention:
By paint of the present invention on aluminum cell graphite anode steel jaw, energy fast setting under normal temperature, certain thickness can be formed and with steel substrate in conjunction with firm, fine and close ceramic coating through high temperature sintering, thus improve anti-hydrogen fluoride corrosion and the high temperature oxidation and corrosion performance of graphite anode steel pawl, extend work-ing life and the replacement cycle of Graphite Electrodes steel pawl.
Embodiment
Below in conjunction with example, the present invention is described further:
Embodiment 1
The anticorrosive high-temperature coatings of a kind of aluminum cell graphite anode steel jaw, it comprises following raw materials by weight portion preparation gained: white fused alumina 15, quartz 5, magnesium oxide 1, calcium oxide 1, ferric oxide 1, zirconia powder 15.
It also comprises inorganic high-temperature agglomerant.
Described inorganic high-temperature agglomerant is the aqueous solution of water glass.The weight of the aqueous solution of described water glass is 50% of above-mentioned raw materials gross weight.
Be coated on steel substrate with after inorganic high-temperature agglomerant mixing and stirring, through 5 ~ 7 hours natural Air dryings, be warmed up to 900 DEG C of working temperatures with per minute 10 DEG C.
Embodiment 2
The anticorrosive high-temperature coatings of a kind of aluminum cell graphite anode steel jaw, it comprises following raw materials by weight portion preparation gained: white fused alumina 50, quartz 80, magnesium oxide 10, calcium oxide 10, ferric oxide 20, zirconia powder 50, dispersion agent 5.
It also comprises inorganic high-temperature agglomerant.
Described dispersion agent is pyrophosphate salt or poly amic acid or tripoly phosphate sodium STPP wherein one or more.Described inorganic high-temperature agglomerant is the aqueous solution of water glass.The weight of the aqueous solution of described water glass is 45% of above-mentioned raw materials gross weight.
Be coated on steel substrate with after inorganic high-temperature agglomerant mixing and stirring, through 5 ~ 7 hours natural Air dryings, be warmed up to 900 DEG C of working temperatures with per minute 10 DEG C.
Embodiment 3
The anticorrosive high-temperature coatings of a kind of aluminum cell graphite anode steel jaw, it comprises following raw materials by weight portion preparation gained: white fused alumina 30, quartz 40, magnesium oxide 5, calcium oxide 5, ferric oxide 10, zirconia powder 30, dispersion agent 2.
It also comprises inorganic high-temperature agglomerant.
Described dispersion agent is pyrophosphate salt or poly amic acid or tripoly phosphate sodium STPP wherein one or more.Described inorganic high-temperature agglomerant is the aqueous solution of water glass.The weight of the aqueous solution of described water glass is 40% of above-mentioned raw materials gross weight.
Be coated on steel substrate with after inorganic high-temperature agglomerant mixing and stirring, through 5 ~ 7 hours natural Air dryings, be warmed up to 900 DEG C of working temperatures with per minute 10 DEG C.
Embodiment 4
The anticorrosive high-temperature coatings of a kind of aluminum cell graphite anode steel jaw, it comprises following raw materials by weight portion preparation gained: white fused alumina 33, quartz 30, magnesium oxide 7, calcium oxide 12, ferric oxide 9, zirconia powder 34, dispersion agent 2.
It also comprises inorganic high-temperature agglomerant.
Described dispersion agent is pyrophosphate salt or poly amic acid or tripoly phosphate sodium STPP wherein one or more.Described inorganic high-temperature agglomerant is the aqueous solution of water glass.The weight of the aqueous solution of described water glass is 35% of above-mentioned raw materials gross weight.
Be coated on steel substrate with after inorganic high-temperature agglomerant mixing and stirring, through 5 ~ 7 hours natural Air dryings, be warmed up to 900 DEG C of working temperatures with per minute 10 DEG C.
Claims (5)
1. the anticorrosive high-temperature coatings of aluminum cell graphite anode steel jaw, is characterized in that: it comprises following raw materials by weight portion preparation gained: white fused alumina 15-50, quartzy 5-80, magnesium oxide 1-10, calcium oxide 1-10, ferric oxide 1-20, zirconia powder 15-50, dispersion agent 0-5.
2. the anticorrosive high-temperature coatings of aluminum cell graphite anode steel jaw according to claim 1, is characterized in that: it also comprises inorganic high-temperature agglomerant.
3. the anticorrosive high-temperature coatings of aluminum cell graphite anode steel jaw according to claim 1, is characterized in that: described white fused alumina is aluminium sesquioxide.
4. the anticorrosive high-temperature coatings of aluminum cell graphite anode steel jaw according to claim 1, is characterized in that: described dispersion agent is pyrophosphate salt or poly amic acid or tripoly phosphate sodium STPP wherein one or more.
5. the anticorrosive high-temperature coatings of aluminum cell graphite anode steel jaw according to claim 2, is characterized in that: described inorganic high-temperature agglomerant is the aqueous solution of water glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310734390.0A CN103755326B (en) | 2013-12-27 | 2013-12-27 | Anticorrosive high-temperature coating for aluminum electrolysis cell graphite anode steel claw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310734390.0A CN103755326B (en) | 2013-12-27 | 2013-12-27 | Anticorrosive high-temperature coating for aluminum electrolysis cell graphite anode steel claw |
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| Publication Number | Publication Date |
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| CN103755326A CN103755326A (en) | 2014-04-30 |
| CN103755326B true CN103755326B (en) | 2015-05-20 |
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| CN201310734390.0A Expired - Fee Related CN103755326B (en) | 2013-12-27 | 2013-12-27 | Anticorrosive high-temperature coating for aluminum electrolysis cell graphite anode steel claw |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104830106A (en) * | 2015-06-08 | 2015-08-12 | 赵志海 | High-temperature-resistant anticorrosion coating |
| CN106634079B (en) * | 2016-12-28 | 2018-11-13 | 云南泽能科技有限公司 | A kind of electrolytic aluminium pre-roasting anode steel pawl anticorrosive paint and preparation method |
| CN107057412B (en) * | 2017-02-15 | 2018-12-28 | 江西省科学院应用化学研究所 | A kind of self-curing electrolgtic aluminium carbon anode high temperature anti-oxidation coating |
| CN107385475A (en) * | 2017-06-07 | 2017-11-24 | 常州兆威不锈钢有限公司 | A kind of anode steel claw protection materials and preparation method thereof |
| CN108359874A (en) * | 2018-03-02 | 2018-08-03 | 深圳市明丽达钟表有限公司 | A kind of novel artificial corundum and the wrist-watch using the Alundum |
| CN111196710A (en) * | 2020-01-09 | 2020-05-26 | 包头市翔基信息技术有限责任公司 | Rare earth coating for preventing high-temperature oxidation corrosion of electrolytic anode and preparation method thereof |
| CN113135741B (en) * | 2021-04-30 | 2023-06-23 | 湖南博溥立材料科技有限公司 | Electrolytic aluminum prebaked anode steel claw ceramic-based coating protective material and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101058684A (en) * | 2006-04-21 | 2007-10-24 | 中国科学院过程工程研究所 | High temperature common mild steel anti-oxidation coating and application thereof |
| CN101407424A (en) * | 2007-10-08 | 2009-04-15 | 联合矿产（天津）有限公司 | Low-dust unshaped refractory |
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2013
- 2013-12-27 CN CN201310734390.0A patent/CN103755326B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101058684A (en) * | 2006-04-21 | 2007-10-24 | 中国科学院过程工程研究所 | High temperature common mild steel anti-oxidation coating and application thereof |
| CN101407424A (en) * | 2007-10-08 | 2009-04-15 | 联合矿产（天津）有限公司 | Low-dust unshaped refractory |
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