CN102328982A - Method for regenerating and recovering valuable metals from ferric chloride waste liquid - Google Patents
Method for regenerating and recovering valuable metals from ferric chloride waste liquid Download PDFInfo
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- CN102328982A CN102328982A CN201110284748A CN201110284748A CN102328982A CN 102328982 A CN102328982 A CN 102328982A CN 201110284748 A CN201110284748 A CN 201110284748A CN 201110284748 A CN201110284748 A CN 201110284748A CN 102328982 A CN102328982 A CN 102328982A
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- ferric chloride
- iron
- crystallization water
- chloride
- waste liquid
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Removal Of Specific Substances (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a method for regenerating and recovering valuable metals from ferric chloride waste liquid, belonging to a special technique for wastewater treatment in the field of environmental protection. By using the characteristics that the melting point of hexahydrate of ferric chloride is low, the crystallization temperature is low and partial dehydrated matters can also be dissolved in crystallization water and is in a liquid state, valuable metallic compounds which are originally dissolved in the crystallization water are separated through concentration. The method is technically characterized in that ferrous chloride in the crystallization water is oxidized into ferric chloride, the ferric chloride is concentrated into ferric chloride hydrates with the number of crystallization water being equal to or less than six and the solid valuable metallic compounds are separated through filtration or precipitation. As long as the valuable metallic compounds do not contain the crystallization water or are not dissolved in the crystallization water at the temperature of filtration or precipitation, the valuable metallic compounds can be effectively separated. The method is easy to master, is simple to operate, generates fewer byproducts and can be widely used for treating the ferric chloride waste liquid.
Description
A kind of iron(ic)chloride spent solution regeneration of patent of the present invention and the method that reclaims valuable metal belong to environmental protection field wastewater treatment professional technique.
The iron(ic)chloride waste liquid results from metal and cleans and metal etch, often contains valuable metals such as the plumbous nickel chromium triangle of copper tin.Disclosed at present technology is that iron substitution method, sulfurization-precipitation method, extraction process, ammino are legal, iron(ic)chloride crystallization process, neutralization precipitation method etc., or because of produce a large amount of by products, the environmental friendliness difficulty is big, technology is difficult to grasp, cost is high, it is unsatisfactory to reclaim factors such as valuable metal is not comprehensive.
A kind of iron(ic)chloride spent solution regeneration of patent of the present invention also reclaims the method for valuable metal, and its purpose just provides and a kind ofly be easy to grasp, the method for simple to operate, wide accommodation.
A kind of iron(ic)chloride spent solution regeneration of patent of the present invention and the method that reclaims valuable metal are used iron(ic)chloride six hydrate fusing points low (37 degree Celsius), Tc low (four degrees celsius), part dehydration thing also can be dissolved in the characteristics that are in a liquid state in the crystal water, the former valuable metal compound that is dissolved in wherein is solid separates through concentrating.
A kind of iron(ic)chloride spent solution regeneration of patent of the present invention and its technical characterictic of method that reclaims valuable metal are: iron protochloride wherein is oxidized to iron(ic)chloride; Be concentrated into the iron(ic)chloride hydrate that is equal to or less than six crystal water, filter or deposition removal solid valuable metal compound.As long as the compound of this valuable metal does not contain crystal water or under filtration, precipitation temperature, is insoluble to crystal water, all can effectively be separated.
A kind of iron(ic)chloride spent solution regeneration of patent of the present invention also reclaims the method embodiment of valuable metal: a kind of iron(ic)chloride waste liquid that results from circuit board etching.Chemical Composition is: iron(ic)chloride 29.09% iron protochloride 1.36% bronze medal 2.43% free acid 0.81% sodium-chlor 1.57%.Stir the VAL-DROP of adding 0.2% down, 45% water, cold filtration are deviate from intensification.The result of laboratory test of must filtrating is: iron(ic)chloride 62.81% bronze medal 0.05%.The water of using allocate to iron(ic)chloride content be 40.5% return line plate etching.The filter residue result of laboratory test is following: all the other are sodium-chlor and water for cupric chloride 73.49% iron(ic)chloride 1.29% iron protochloride 0.42%.
A kind of iron(ic)chloride spent solution regeneration of patent of the present invention and the method and technology that reclaims valuable metal be easy to grasp, simple to operate, by product is few.Can be extensively in the iron(ic)chloride wastewater treatment.
Claims (1)
1. a kind of iron(ic)chloride spent solution regeneration of patent of the present invention and its technical characterictic of method that reclaims valuable metal are: iron protochloride wherein is oxidized to iron(ic)chloride; Be concentrated into the iron(ic)chloride hydrate that is equal to or less than six crystal water, filter or deposition removal solid valuable metal compound.As long as the compound of this valuable metal does not contain crystal water or under filtration, precipitation temperature, is insoluble to crystal water, all can effectively be separated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110284748.5A CN102328982B (en) | 2011-09-01 | 2011-09-01 | Method for regenerating and recovering valuable metals from ferric chloride waste liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110284748.5A CN102328982B (en) | 2011-09-01 | 2011-09-01 | Method for regenerating and recovering valuable metals from ferric chloride waste liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102328982A true CN102328982A (en) | 2012-01-25 |
| CN102328982B CN102328982B (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110284748.5A Active CN102328982B (en) | 2011-09-01 | 2011-09-01 | Method for regenerating and recovering valuable metals from ferric chloride waste liquid |
Country Status (1)
| Country | Link |
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| CN (1) | CN102328982B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104667770A (en) * | 2015-02-03 | 2015-06-03 | 上海拱极化学有限公司 | Safety use method of chlorine |
| CN112028129A (en) * | 2020-08-18 | 2020-12-04 | 杭州逐真科技有限公司 | Recycling treatment device and process for ferric trichloride etching solution |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02207890A (en) * | 1989-02-03 | 1990-08-17 | Toagosei Chem Ind Co Ltd | Method for removing arsenic in aqueous iron chloride solution |
| JPH09235684A (en) * | 1995-12-28 | 1997-09-09 | Fuji Kasui Kogyo Kk | Method for regenerating waste liquid etchant |
| JPH1046370A (en) * | 1996-08-06 | 1998-02-17 | Fuji Kasui Kogyo Kk | Method for regenerating waste iron chloride liquid enchant |
| CN1348020A (en) * | 2000-10-10 | 2002-05-08 | 同济大学 | Method of eliminating nickel and heavy metal ion from waste ferric chloride liquid after etching or pickling |
| JP3985125B2 (en) * | 2000-06-20 | 2007-10-03 | 東亞合成株式会社 | Ferric chloride solution manufacturing method, system thereof, and apparatus thereof |
| US20100061920A1 (en) * | 2008-09-10 | 2010-03-11 | Kevin Edward Janak | Process for producing stable ferric salts for water treatment applications |
-
2011
- 2011-09-01 CN CN201110284748.5A patent/CN102328982B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02207890A (en) * | 1989-02-03 | 1990-08-17 | Toagosei Chem Ind Co Ltd | Method for removing arsenic in aqueous iron chloride solution |
| JPH09235684A (en) * | 1995-12-28 | 1997-09-09 | Fuji Kasui Kogyo Kk | Method for regenerating waste liquid etchant |
| JPH1046370A (en) * | 1996-08-06 | 1998-02-17 | Fuji Kasui Kogyo Kk | Method for regenerating waste iron chloride liquid enchant |
| JP3985125B2 (en) * | 2000-06-20 | 2007-10-03 | 東亞合成株式会社 | Ferric chloride solution manufacturing method, system thereof, and apparatus thereof |
| CN1348020A (en) * | 2000-10-10 | 2002-05-08 | 同济大学 | Method of eliminating nickel and heavy metal ion from waste ferric chloride liquid after etching or pickling |
| US20100061920A1 (en) * | 2008-09-10 | 2010-03-11 | Kevin Edward Janak | Process for producing stable ferric salts for water treatment applications |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104667770A (en) * | 2015-02-03 | 2015-06-03 | 上海拱极化学有限公司 | Safety use method of chlorine |
| CN112028129A (en) * | 2020-08-18 | 2020-12-04 | 杭州逐真科技有限公司 | Recycling treatment device and process for ferric trichloride etching solution |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102328982B (en) | 2015-06-03 |
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