CN1752286A - Metal Mn passivating liquid and use method thereof - Google Patents
Metal Mn passivating liquid and use method thereof Download PDFInfo
- Publication number
- CN1752286A CN1752286A CN 200510086577 CN200510086577A CN1752286A CN 1752286 A CN1752286 A CN 1752286A CN 200510086577 CN200510086577 CN 200510086577 CN 200510086577 A CN200510086577 A CN 200510086577A CN 1752286 A CN1752286 A CN 1752286A
- Authority
- CN
- China
- Prior art keywords
- passivating
- metal
- solution
- water
- passivating solution
- 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
- Chemical Treatment Of Metals (AREA)
Abstract
A passivating liquid for metal Mn in order to prevent Mn from being oxidized is prepared from phosphoric acid, water and alkali chosen from sodium hydroxide, potassium hydroxide, lime and ammona for regulating pH=3-14. Its passivating process includes immersing Mn in said passivating liquid at 0-80 deg.C for 0.01-60 min and baking.
Description
Technical field
The invention belongs to the manganese metal oxidation proof technical field, a kind of metal Mn passivating liquid and using method thereof particularly are provided, efficiently solve the nontoxic anti-oxidation problem of manganese metal.
Background technology
Manganese sulfate solution gets the electrolytic metal Mn sheet through electrolysis, manganese metal is more active metal, in addition because electrolytic metal Mn sheet surface has abundant dendrite arm structure, specific surface area is big, so the oxidation activity of electrolytic metal sheet is very big, be exposed to the oxidation by air rapidly of airborne wet electrolytic metal Mn sheet.In order to prevent the oxidation of manganese sheet, method commonly used is to use the dichromate deactivation method, and this method cost is low, easy to operate, effective, but wretched insufficiency is to have in the passivating process to contain chromic waste water generation in a large number.The manganese sheet need be rinsed well with big water gaging, thereby produce a large amount of chromate waste waters after using the dichromate passivation.1 ton of electrolytic metal Mn sheet of general every passivation produces contains the about 3-6 ton of chromium wash water, there is about 60 of electrolytic metal Mn factory in the whole nation, produce about 1,000,000 tons of electrolytic metal Mn per year, so a large amount of chromate waste water of the annual generation of electrolytic metal manganese industry, and this waste water does not all directly efflux through just handling, severe contamination local environment, serious threat safety such as the person.Recently State Bureau of Environmental Protection has been prohibited electrolytic metal manganese industry discharging chromate waste water, requires rectification without exception, does not reach emission request as rectification, will close down without exception.
Summary of the invention
The invention reside in preparation and using method thereof that a kind of metal Mn passivating liquid is provided, solved the nontoxic anti-oxidation problem of manganese metal.
Passivating solution of the present invention is made up of phosphoric acid, water and alkali, and pH value of solution is adjusted to 3～14 with alkali, presses phosphoric acid, water and the preparation of alkali weight sum, and the shared weight of phosphoric acid is 0.1～20%, and all the other are the amount of water and alkali.The preferential range of choice of the weight that phosphoric acid is shared is 0.3～10%, and the preferential range of choice of pH value of solution is 3～13.
It is phosphoric acid that the passivating solution of above-mentioned indication consists of essential substance, and alkali is sodium hydroxide, potassium hydroxide, lime and ammonia.
Passivating solution preparation of the present invention and using method are: in certain water gaging, add phosphoric acid, to certain value, promptly get passivating solution with alkali regulator solution pH, the shared weight of passivating solution phosphoric acid is 0.1～20%, and all the other are the amount of water and alkali, and pH value of solution is adjusted to 3～14 with alkali.Manganese metal is immersed passivation in the passivating solution fully, 0～80 ℃ of passivation temperature, passivation time 0.01～60min, after the passivation, directly oven dry, or the oven dry of washing back.
The invention has the advantages that: manganese metal passivation totally nontoxic is harmless, no discharging of waste liquid, good passivation effect.
Embodiment
Embodiment 1
In 300 kg of water, add 3 kilograms of phosphoric acid, with sodium hydroxide pH value of solution is adjusted to 9, passivating solution, manganese metal was immersed in the passivating solution 3 seconds, take out, directly oven dry, or take out the back and place certain hour, dry water flushing back.
Embodiment 2
In 300 kg of water, add 0.3 kilogram of phosphoric acid, with sodium hydroxide pH value of solution is adjusted to 9, passivating solution, manganese metal was immersed in the passivating solution 3 seconds, take out, directly oven dry, or take out the back and place certain hour, dry water flushing back.
Embodiment 3
In 300 kg of water, add 40 kilograms of phosphoric acid, with sodium hydroxide pH value of solution is adjusted to 9, passivating solution, manganese metal was immersed in the passivating solution 3 seconds, take out, directly oven dry, or take out the back and place certain hour, dry water flushing back.
Embodiment 4
In 300 kg of water, add 10 kilograms of phosphoric acid, with potassium hydroxide pH value of solution is adjusted to 10, passivating solution, manganese metal was immersed in the passivating solution 3 seconds, take out, directly oven dry, or take out the back and place certain hour, dry water flushing back.
Embodiment 5
In 300 kg of water, add 10 kilograms of phosphoric acid, with ammonia pH value of solution is adjusted to 10, passivating solution, manganese metal was immersed in the passivating solution 10 seconds, take out, directly oven dry, or take out the back and place certain hour, dry water flushing back.
Embodiment 6
In 300 kg of water, add 1 kilogram of phosphoric acid, with ammonia pH value of solution is adjusted to 10, passivating solution, manganese metal was immersed in the passivating solution 4 seconds, take out, directly oven dry, or take out the back and place certain hour, dry water flushing back.
Embodiment 7
In 200 kg of water, add 30 kilograms of phosphoric acid, with ammonia pH value of solution is adjusted to 12, passivating solution, manganese metal was immersed in the passivating solution 12 seconds, take out, directly oven dry, or take out the back and place certain hour, dry water flushing back.
Embodiment 8
In 300 kg of water, add 6 kilograms of phosphoric acid, with ammonia pH value of solution is adjusted to 13, passivating solution, manganese metal was immersed in the passivating solution 40 seconds, take out, directly oven dry, or take out the back and place certain hour, dry water flushing back.
Embodiment 9
In 300 kg of water, add 2 kilograms of phosphoric acid, with ammonia pH value of solution is adjusted to 5, passivating solution, manganese metal was immersed in the passivating solution 14 seconds, take out, directly oven dry, or take out the back and place certain hour, dry water flushing back.
Embodiment 10
In 300 kg of water, add 4 kilograms of phosphoric acid, with ammonia pH value of solution is adjusted to 4, get passivating solution, manganese metal is immersed 60min in the passivating solution, take out, directly oven dry, or take out back placement certain hour, water flushing back oven dry.
Embodiment 11
In 100 kg of water, add 2 kilograms of phosphoric acid, with ammonia pH value of solution is adjusted to 8, get passivating solution, manganese metal is immersed 60min in the passivating solution, take out, directly oven dry, or take out back placement certain hour, water flushing back oven dry.
Embodiment 12
In 300 kg of water, add 4 kilograms of phosphoric acid, with lime pH value of solution is adjusted to 7, passivating solution, manganese metal was immersed in the passivating solution 14 seconds, take out, directly oven dry, or take out the back and place certain hour, dry water flushing back.
Embodiment 13
In 300 kg of water, add 14 kilograms of phosphoric acid, with lime pH value of solution is adjusted to 12, get passivating solution, manganese metal is immersed 10min in the passivating solution, take out, directly oven dry, or take out back placement certain hour, water flushing back oven dry.
Claims (5)
1, a kind of metal Mn passivating liquid is characterized in that: passivating solution is made up of phosphoric acid, water and alkali, the ratio preparation by weight of phosphoric acid, water and alkali, and the shared weight of phosphoric acid is 0.1～20%, and all the other are water and alkali, and passivating solution pH value is controlled at 3～14.
2, passivating solution as claimed in claim 1 is characterized in that: the alkali in the passivating solution is sodium hydroxide, potassium hydroxide, lime and ammonia.
3, passivating solution as claimed in claim 1 or 2 is characterized in that: the scope of the weight that phosphoric acid is shared is 0.3～10%, and the scope of passivating solution pH is 3～13.
4, as claim 1 or 2 or 3 described metal Mn passivating liquids, its using method is characterised in that: manganese metal is immersed in the passivating solution, and under 0～80 ℃ of passivation temperature, passivation time 0.01～60min takes out dry.
5, as metal Mn passivating liquid using method as described in the claim 4, it is characterized in that: the scope of passivation temperature is 1～45 ℃, and the scope of passivation time is 1～1200 second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510086577 CN1752286A (en) | 2005-10-10 | 2005-10-10 | Metal Mn passivating liquid and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510086577 CN1752286A (en) | 2005-10-10 | 2005-10-10 | Metal Mn passivating liquid and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1752286A true CN1752286A (en) | 2006-03-29 |
Family
ID=36679289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510086577 Pending CN1752286A (en) | 2005-10-10 | 2005-10-10 | Metal Mn passivating liquid and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1752286A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100422384C (en) * | 2006-04-13 | 2008-10-01 | 中国地质大学（武汉） | Passivator for treatment of electrolytic manganese metal surface and process for preparing same |
| CN100425730C (en) * | 2006-09-21 | 2008-10-15 | 北京科技大学 | Manganese metal oxidation proof passivation liquid and use method thereof |
| CN101824615A (en) * | 2010-05-11 | 2010-09-08 | 贵州省铜仁市武陵锰业新材料有限公司 | Chrome-free tanning agent for electrolytic metal manganese surface treatment and preparation method thereof |
| CN102424490A (en) * | 2011-10-24 | 2012-04-25 | 中国天辰工程有限公司 | Treatment process for recycling chromate waste water in producing electrolytic manganese metal |
| CN103805979A (en) * | 2012-11-06 | 2014-05-21 | 中国科学院过程工程研究所 | Chromium-free passivation solution for electrolytic manganese and passivation method of electrolytic manganese |
| CN109457242A (en) * | 2018-12-19 | 2019-03-12 | 中南大学 | Chrome-free tanning agent and its preparation method and application |
-
2005
- 2005-10-10 CN CN 200510086577 patent/CN1752286A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100422384C (en) * | 2006-04-13 | 2008-10-01 | 中国地质大学（武汉） | Passivator for treatment of electrolytic manganese metal surface and process for preparing same |
| CN100425730C (en) * | 2006-09-21 | 2008-10-15 | 北京科技大学 | Manganese metal oxidation proof passivation liquid and use method thereof |
| CN101824615A (en) * | 2010-05-11 | 2010-09-08 | 贵州省铜仁市武陵锰业新材料有限公司 | Chrome-free tanning agent for electrolytic metal manganese surface treatment and preparation method thereof |
| CN102424490A (en) * | 2011-10-24 | 2012-04-25 | 中国天辰工程有限公司 | Treatment process for recycling chromate waste water in producing electrolytic manganese metal |
| CN103805979A (en) * | 2012-11-06 | 2014-05-21 | 中国科学院过程工程研究所 | Chromium-free passivation solution for electrolytic manganese and passivation method of electrolytic manganese |
| CN103805979B (en) * | 2012-11-06 | 2016-04-06 | 中国科学院过程工程研究所 | A kind of electrolytic manganese chromium-free passivation liquid and electrolytic manganese passivating method |
| CN109457242A (en) * | 2018-12-19 | 2019-03-12 | 中南大学 | Chrome-free tanning agent and its preparation method and application |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1752286A (en) | Metal Mn passivating liquid and use method thereof | |
| CN102851659B (en) | Magnesium alloy surface phosphorus-free chromium-free conversion coating and application method thereof | |
| EP0403241B1 (en) | Method for forming zinc phosphate film on metal surface | |
| CN103695889B (en) | A kind of chromium-free passivation liquid for galvanized sheet, aluminium and copper alloy surface process | |
| CN1986883A (en) | Environment friendly no-chromium conversion treating solution | |
| CN103668161A (en) | Manganese-titanium serial chromium-free passivation liquid on surface of aluminum alloy and passivation method thereof | |
| CN1556246A (en) | Chromium less deactivation liquid | |
| CN101942655A (en) | Preparation method of chromium-free passivated liquid and method for passivating electrogalvanizing or zinc alloy layer by same | |
| CN101619203B (en) | Aqueous infiltrating crystallization type waterproof agent and preparation method thereof | |
| CN104911577A (en) | Chromium-free alkaline passivation solution and passivation method for aluminum alloy | |
| CN106835108A (en) | A kind of environmentally friendly inorganic organic passivation film of modified graphene oxide | |
| CN109112519A (en) | Aluminium alloy extrusions chrome-free tanning agent containing graphene oxide and preparation method thereof | |
| CN103614712B (en) | Sol-gel process is prepared Sb, Ce codope SnO2The method in intermediate layer | |
| CN105543823B (en) | A kind of method for preparing the colorful compound conversion film of titanium/selenium in aluminum alloy surface | |
| CN106191959A (en) | A kind of environment-friendly type aluminium alloy sealing agent | |
| CN111139463A (en) | Preparation method of environment-friendly corrosion-resistant magnesium alloy ceramic conversion film | |
| CN105040067B (en) | Environment-friendly type nickel-free free-floride mid-temperature sealing agent and enclosure method | |
| CN102234798B (en) | Magnesium alloy surface conversion film forming solution and using method thereof | |
| CN1861843A (en) | Magnesium alloy phosphate surface modified treatment process | |
| CN101144158A (en) | Hot dipping galvanized steel sheet molybdate/phosphate composite system chromium-free deactivation method | |
| CN101191215A (en) | Technique for preparing trivalent chromium white deactivation liquid | |
| CN103320779B (en) | Passivation solution capable of inhibiting formation of hexavalent chromium in trivalent chromium passivation layer as well as preparation method and application of passivation solution | |
| CN101654781A (en) | Zinc coating passivation solution, preparation method and coating method thereof | |
| Vanmaekelbergh et al. | Relation between chemical and electrochemical steps in the anodic decomposition of Group III-Group V semiconductor electrodes: a comprehensive model | |
| CN112501666B (en) | Treatment method of long-acting corrosion-resistant coating on surface of aluminum frame of solar component |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |