CN107059084A - The method for preventing roll from plating pollution of chromium environment - Google Patents
The method for preventing roll from plating pollution of chromium environment Download PDFInfo
- Publication number
- CN107059084A CN107059084A CN201710000740.9A CN201710000740A CN107059084A CN 107059084 A CN107059084 A CN 107059084A CN 201710000740 A CN201710000740 A CN 201710000740A CN 107059084 A CN107059084 A CN 107059084A
- Authority
- CN
- China
- Prior art keywords
- roll
- grease
- chromium
- crown
- recycling bin
- 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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Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/19—Iron or steel
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
- C25D5/36—Pretreatment of metallic surfaces to be electroplated of iron or steel
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
- C25F1/00—Electrolytic cleaning, degreasing, pickling or descaling
Abstract
Comprise the following steps the present invention relates to a kind of method for preventing that roll from plating pollution of chromium environment：Remove grease：The roll for needing chromium plating is placed in roll stand first and first scrapes the grease on its face with offset plate, gasoline is bonded on roll crown again and remaining grease is wiped repeatedly with cloth, then the dirt of roll crown is wiped toward addition cleaning agent on roll crown, and dried roll crown with dry cloth, electrolytic degreasing is carried out by hanger again, so that roll thoroughly cleaning；Roll chromium plating：The rust staining and oxide-film in chromic acid solution are removed first, and then this kind of chromic acid solution is put into groove and carries out anode activation and etch, then chromium coating is carried out to roll.The method of the chromium plating can reduce pollution, and environmental protection can also reduce production cost, raise labour productivity.
Description
Technical field
The present invention relates to a kind of method for preventing roll from plating pollution of chromium environment.
Background technology
Roll is during chromium plating, because the surface area of roll is big, if can be produced largely with the grease of water cleaning roller
Waste water, containing compositions such as extremely toxic chromic anhydride, acid, alkali and greasy dirts in this kind of waste water, and waste water be discharged into nature can pollute river,
Lake, sea, crops, harm ecological environment and human health can then be destroyed by penetrating into soil.In the prior art, the master of chromium plating wastewater
Processing method is wanted to include chemical reduction method, electrolysis, membrane separation process, absorption method, bioanalysis, ion-exchange etc., although processing
Method is a lot, but the drawbacks of all have certain：The electronation precipitation method, electrolysis there are secondary pollution and chromium ion is difficult to back
Receive the shortcomings of utilizing；Although bioanalysis, membrane separation process have a extensive future, but are also in the research trial period at present, extensive to utilize
Need time；And although ion-exchange and absorption method have exchange adsorption capacity big, recycling effect is good, to environment without two
Secondary pollution, using wide, the advantages of technology is more ripe, but has that pre-processing requirements are higher, resin is oxidized easily, reclaim chromium
The shortcomings of acid concentration is relatively low.Therefore, current method of wastewater treatment can not only meet the requirement of modern production and environmental protection, and
And processing cost is all very high, both difficulty createed economic benefit, and seriously govern industry development.
Therefore, entitled " a kind of processing method of waste electroplating liquor containing chromium and place disclosed in Chinese patent 104909508A
Manage device " provide a solution, the processing unit include for by the suspended impurity in chromate waste water, grease and iron from
The preprocessor that son is removed, the preprocessor is connected with cation exchanger, anion exchanger, depth in turn by pipeline
Cation bed and advanced treating anion bed are handled, the cation exchanger, which is also associated with one, is used for resin in cation regenerant exchanger
Cation bed regenerating unit, the anion exchanger is also associated with an anion bed for being used for resin in anion regenerant exchanger and regenerates dress
Put.Preprocessor is first passed through, the impurity in chromate waste water is removed, the water outlet after preliminary treatment is obtained, then water outlet is led to successively
Cross cation exchanger and anion exchanger carries out just one-step desalting, water outlet is passed sequentially through into advanced treating cation bed and depth afterwards
Handle anion bed and carry out desalination again, obtain the recyclable demineralized water for chromium plating rinsing, after cation exchanger saturation is penetrated,
Regenerated by cation bed regenerating unit, then anion bed regenerated liquid is carried out to removing sodium processing again and recyclable high concentration is condensed into
Chromic acid or evaporative crystallization are to complete overall process.Although the treating method and apparatus can eliminated by two grades of positive anion bed systems
The environmental pollution of Cr VI can obtain high-quality demineralized water simultaneously, and can be back to production, both save running water and demineralized water use
Amount, has good economic benefit again, but sour discharge capacity is big during it, it is understood that there may be the phenomenon of rust staining and oxide-film, so,
The specific effect of processing method and processing unit of the waste electroplating liquor containing chromium needs further to inquire into.
The content of the invention
Solve to protect using the convenient mode for absorbing dirt and improvement chromic acid solution it is an object of the invention to provide a kind of
The method for preventing roll plating pollution of chromium environment of the problems such as environment and enhancing chromium coating intensity and reduction production cost.
The method for preventing roll from plating pollution of chromium environment proposed by the invention includes the technology for removing grease and roll chromium plating
Feature, wherein, the roll for needing chromium plating is placed in roll stand by removal grease first first scrapes the grease on its face with offset plate, then will
Gasoline is bonded on roll crown and remaining grease is wiped repeatedly with cloth, then wipes roll crown toward addition cleaning agent on roll crown
Dirt, and roll crown is dried with dry cloth, then electrolytic degreasing is carried out by hanger, so that roll thoroughly cleaning；And roll is plated
Chromium removes rust staining and oxide-film in chromic acid solution first, and then this kind of chromic acid solution is put into groove and carries out anode activation and leaching
Erosion, then chromium coating is carried out to roll.It will carry out chromium plating after being worn because of roll to it, and roll its surface in chrome-plating process
It is upper that there is larger amount of grease, so, the grease on roll crown is first scraped with offset plate, the grease scraped can be put into what is specified
Position is handled；It can not possibly all be removed because scraping grease with offset plate simultaneously, so, it is bonded on roll crown and is used using gasoline
Cloth is wiped repeatedly cleaning and can all removed；In addition, the dirt of roll crown is wiped using cleaning agent can make roll crown cloth
Dry, then can make roll thoroughly cleaning with electrolytic degreasing.
The electrolytic degreasing takes the mode of anode after first negative electrode.
It is described to be made up of water, sodium hydroxide, sodium carbonate, the water of tertiary sodium phosphate 12.
During the removal grease, first by the grease discharge scraped with offset plate on roll crown to the first recycling bin, and
The vaseline and butter of viscous shape are provided with first recycling bin；It is bonded at gasoline on roll crown and cleaning residue is wiped repeatedly with cloth
Grease discharge to being put into the second recycling bin；Wiped again toward dry cloth used in addition cleaning agent on roll crown after roll crown, by it
It is put into the 3rd recycling bin；And waste liquid is put into the 4th recycling bin with electrolytic degreasing.Wherein, it is put into viscous shape in the first recycling bin
Vaseline and butter, and can be sent in boiler after the grease scraped is placed into it and burnt；And it is bonded at roll crown
On gasoline be put into also be sent in boiler after the second recycling bin after using cloth to wipe with and wiping grease and burnt；Cleaning agent is added simultaneously
It is put into after wiping roll crown with dry cloth in the 3rd recycling bin, because cleaning agent can clean up cloth, so, this kind of cloth can enter again
Row oil removing；In addition, the waste liquid being put into the 4th recycling bin can also be burnt.
It is proposed by the invention to prevent the method that roll plates pollution of chromium environment during grease is removed, use it is efficient
Normal temperature roll cleaning agent formula and cleaning and recovery method, can be peeled off with half dry type material and squeeze to reclaim greasy dirt, wherein, first will
It is sent in boiler and is burnt after the grease desiccation scraped with offset plate；And removed with cleaning agent after grease the material discharged can first by
Greasy dirt is separated with cleaning agent, then will be sent to boiler combustion after the greasy dirt desiccation of separation, and cleaning agent adjust by analysis after again
It is secondary to utilize, so, the mode that this kind removes grease achieves fabulous effect, and it not only has reduction pollution and protection periphery
Environment, can also reduce production cost, raise labour productivity；In addition, during roll chromium plating, by the rust staining in chromic acid solution
Chromium plating is carried out to roll again after being removed with oxide-film, it may be possible to activate the structure of roll crown, so, this kind of chromium plating roll can be with
Strengthen chromium coating and improve the bond strength of roller substrate.
Embodiment
Roll is placed in roll stand by roll first during chromium plating, then the grease on roll is removed to enter later
Row chromium plating.The mode that the present embodiment removes grease comprises the following steps：It is furnished with small handcart one first, is set on small handcart
There are the first recycling bin, the second recycling bin, the 3rd recycling bin, the 4th recycling bin this four recycling bins, wherein, first scrape roll with offset plate
Grease on face, grease is largely scraped, then the grease scraped is put into the first recycling bin, and in the first recycling bin first
The vaseline and butter of viscous shape are provided with, is burnt when being put into grease to be sent in boiler in the first recycling bin；Simultaneously
Because being difficult fully to scrape grease with offset plate, therefore gasoline can be bonded on roll crown and remaining oil is wiped repeatedly with cloth
Fat, after the grease on roll is removed, then will be wiped repeatedly the remaining grease discharge of cleaning in the second recycling bin with cloth
It can be sent in boiler and be burnt；Although in addition, remaining grease can be wiped repeatedly because being bonded at gasoline on roll crown, rolling
Can have dirt on roll surface, so, toward roll crown on add cleaning agent and wipe the dirt of roll crown, then by cleaning agent and dirt
Dirt is put into the 3rd recycling bin, because cleaning agent can clean up cloth, so that cloth can carry out oil removing again；Enter when with cloth
After row oil removing, then with dry cloth roll crown is dried, electrolytic degreasing is then carried out by hanger, so that roll thoroughly cleaning,
Its waste liquid washed out is put into the 4th recycling bin, so that the waste liquid can also be burnt.
Above-mentioned cleaning agent is made up of water, sodium hydroxide, sodium carbonate, the water of tertiary sodium phosphate 12, wherein, make cleaning agent
Composition and method are：600ML water is first taken, adds after 250g sodium hydroxide stirring and dissolvings, 30g carbonic acid is then added again
Sodium, the water 65g of tertiary sodium phosphate 12, add water to after 1000mL and the cleaning agent are made, use the cleaning agent again after agitated dissolving
Roll surface dirt is wiped, anode after first negative electrode after then being used using Cro3 200g/L, sulfuric acid 2.5g/L anode treatment formulations
Mode carry out electrolytic degreasing；Above-mentioned electrolytic degreasing by the way of anode after first negative electrode, cause greasy dirt and cleaning agent by except
The aperture of oil groove bottom realizes separation, and workpiece is cleaned into rinsing bowl by nozzle and flusher afterwards, is produced after flushing
Waste water along rinsing bowl inwall sidepiece and bottom groove flow into regulating reservoir in, now add sulfuric acid regulation acid-base value, work as PH
Value reaches that sodium pyrosulfite is added during 2.5-3 makes waste water in green, adds sodium hydroxide regulation pH value, makes up to 7-8.5
Waste water flows into reaction settling basin by pipeline afterwards, is added in reaction settling basin and accelerates stirring to generate for 10 minutes after flocculant PAM
Precipitation, the precipitation outlet slot that sediment tilts 30 jiaos by precipitation reaction pond side carries out press filtration after entering plate and frame filter press, presses
Clear water obtained by filter enters Rinsing Area by connecting the pipeline of Rinsing Area, and sludge then enters dirty by connecting the pipeline of sludge storage tank
Mud storage tank, enters mummifying pool and carries out desiccation, recycle to the clear water of Rinsing Area and both can routinely discharge therewith, again can be with
Used as lavatory flushing and greening, and can then be used to brickmaking after desiccation by the sludge of mummifying pool.
After the roller surface is cleared up, then toward the progress chromium plating of its surface, during chromium plating, chromic acid is removed first
This kind of chromic acid solution, is then put into groove and carries out anode activation and etch, then roll is entered by rust staining and oxide-film in solution
Row chromium coating；Wherein, the theoretical ratio of Cr VI and sodium pyrosulfite is 1：3, actual amount 1：3.5 ~ 4, the reaction time be 20 ~
30 minutes, the DTCR high-molecule metals trapping agent that can also add 1 ~ 2% removed metal ion.
Claims (4)
1. the method for preventing roll from plating pollution of chromium environment, it is characterised in that comprise the following steps：
Remove grease：The roll for needing chromium plating is placed in roll stand first the grease on its face is first scraped with offset plate, then by gasoline
It is bonded on roll crown and remaining grease is wiped repeatedly with cloth, then wipes the dirt of roll crown toward addition cleaning agent on roll crown
Dirt, and dried roll crown with dry cloth, then electrolytic degreasing is carried out by hanger, so that roll thoroughly cleaning；
Roll chromium plating：The rust staining and oxide-film in chromic acid solution are removed first, and then this kind of chromic acid solution is put into groove and carried out
Anode activation and etch, then chromium coating is carried out to roll.
2. according to the method described in claim 1, it is characterised in that：The electrolytic degreasing takes the mode of anode after first negative electrode.
3. according to the method described in claim 1, it is characterised in that：The cleaning agent is by water, sodium hydroxide, sodium carbonate, phosphoric acid
The water of trisodium 12 is constituted.
4. according to the method described in claim 1, it is characterised in that：During the removal grease, it will first be scraped and rolled with offset plate
Grease discharge on roll surface is to the vaseline and butter that viscous shape is provided with the first recycling bin, and in first recycling bin；Use vapour
Oil, which is bonded on roll crown, is wiped repeatedly the remaining grease discharge of cleaning with cloth to being put into the second recycling bin；Again toward adding on roll crown
Plus dry cloth is wiped after roll crown used in cleaning agent, is put it into the 3rd recycling bin；And waste liquid is put into the 4th with electrolytic degreasing
In recycling bin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710000740.9A CN107059084A (en) | 2017-01-03 | 2017-01-03 | The method for preventing roll from plating pollution of chromium environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710000740.9A CN107059084A (en) | 2017-01-03 | 2017-01-03 | The method for preventing roll from plating pollution of chromium environment |
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| Publication Number | Publication Date |
|---|---|
| CN107059084A true CN107059084A (en) | 2017-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710000740.9A Pending CN107059084A (en) | 2017-01-03 | 2017-01-03 | The method for preventing roll from plating pollution of chromium environment |
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| Country | Link |
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| CN (1) | CN107059084A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111394764A (en) * | 2020-04-22 | 2020-07-10 | 太仓市施美电镀有限公司 | Electrogalvanizing production line for roller and production process thereof |
| CN112226796A (en) * | 2020-08-31 | 2021-01-15 | 江苏友富薄板科技有限公司 | Chromium plating method for roller |
| CN112222194A (en) * | 2020-08-31 | 2021-01-15 | 江苏友富薄板科技有限公司 | Leveling machine applying chrome-plated roller |
| CN113042537A (en) * | 2021-04-12 | 2021-06-29 | 内蒙古联晟新能源材料有限公司 | Protection method for roller surface at-35 ℃ to +30 ℃ environment temperature |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1670261A (en) * | 2004-01-20 | 2005-09-21 | 富士胶片株式会社 | Aluminium sheet embossing roll |
| CN201525762U (en) * | 2009-11-03 | 2010-07-14 | 武汉钢铁(集团)公司 | Waste-water treatment device for chromeplate |
| WO2012059789A1 (en) * | 2010-11-04 | 2012-05-10 | Selektif Teknoloji Sanayi Ticaret Limited Sirketi | Roll to roll manufacturing of solar selective sheets |
| CN105734631A (en) * | 2014-12-10 | 2016-07-06 | 上海宝钢工业技术服务有限公司 | Electroplating solution and electroplating method for roughening treatment of cold-rolled roller |
-
2017
- 2017-01-03 CN CN201710000740.9A patent/CN107059084A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1670261A (en) * | 2004-01-20 | 2005-09-21 | 富士胶片株式会社 | Aluminium sheet embossing roll |
| CN201525762U (en) * | 2009-11-03 | 2010-07-14 | 武汉钢铁(集团)公司 | Waste-water treatment device for chromeplate |
| WO2012059789A1 (en) * | 2010-11-04 | 2012-05-10 | Selektif Teknoloji Sanayi Ticaret Limited Sirketi | Roll to roll manufacturing of solar selective sheets |
| CN105734631A (en) * | 2014-12-10 | 2016-07-06 | 上海宝钢工业技术服务有限公司 | Electroplating solution and electroplating method for roughening treatment of cold-rolled roller |
Non-Patent Citations (1)
| Title |
|---|
| 魏计文: "《劳动力转移就业职业培训教材 油漆工》", 31 May 2014 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111394764A (en) * | 2020-04-22 | 2020-07-10 | 太仓市施美电镀有限公司 | Electrogalvanizing production line for roller and production process thereof |
| CN111394764B (en) * | 2020-04-22 | 2022-04-26 | 太仓市施美电镀有限公司 | Electrogalvanizing production line for roller and production process thereof |
| CN112226796A (en) * | 2020-08-31 | 2021-01-15 | 江苏友富薄板科技有限公司 | Chromium plating method for roller |
| CN112222194A (en) * | 2020-08-31 | 2021-01-15 | 江苏友富薄板科技有限公司 | Leveling machine applying chrome-plated roller |
| CN113042537A (en) * | 2021-04-12 | 2021-06-29 | 内蒙古联晟新能源材料有限公司 | Protection method for roller surface at-35 ℃ to +30 ℃ environment temperature |
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