CN102877088A - Novel method for removing tin and lead from water tank - Google Patents
Novel method for removing tin and lead from water tank Download PDFInfo
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- CN102877088A CN102877088A CN2011101985312A CN201110198531A CN102877088A CN 102877088 A CN102877088 A CN 102877088A CN 2011101985312 A CN2011101985312 A CN 2011101985312A CN 201110198531 A CN201110198531 A CN 201110198531A CN 102877088 A CN102877088 A CN 102877088A
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- lead
- water tank
- tin
- detin
- novel method
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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
Abstract
The invention relates to a novel method for removing tin and lead from a water tank. According to the method, sodium hydroxide, potassium permanganate and sodium hypochlorite are used as substances for removing tin and lead; the aim of removing tin and lead is fulfilled by the steps of cracking welding spots, removing tin and lead, and recovering tin and lead elementary substances; and a mother liquor in which tin and lead are removed is recycled. By the method for removing tin and lead, copper is not corroded; and the novel method has a good effect and is low in energy consumption.
Description
Technical field
The present invention relates to a kind of method of detin lead, more specifically, the present invention relates to a kind of novel method of water tank detin lead.
Background technology
Rapid economic development along with China, the motor vehicle liquidation rate improves, cooling water tank in the automobile belongs to brass work, but because water tank tin lead welding point accounts for the 5-11% of whole water tank, affected the application on copper products, can only allow blister copper is smelted at twice, once electrolytic just can be applied on the copper products, cause like this waste of the energy and the loss of copper.
How removing at present tin lead content in the water tank, is the difficult problem that whole industry and enterprise face.Traditional method is to heat with fire to come except detin plumbously to 400 ℃, and water tank middle section body copper radiating rib (although the higher copper sheet of the fusing point of copper is thinner) also melts thereupon like this.Plumbous with acid detin, can lose a large amount of copper simultaneously, and the plumbous residual water tank of tin is high especially, can't reach good effect.
Summary of the invention
In order to overcome defects, the invention provides a kind of novel method of water tank detin lead, it may further comprise the steps:
The first step: crack the water tank solder joint, in water tank, add entry, solder joint is dipped in the water fully, with respect to the weight of water, add the sodium hydroxide of 30-50% and the potassium permanganate of 5-8 ‰, plumbous except detin fast;
Second step: crack the water tank behind the solder joint, being placed on the concentration for preparing is in the aqueous sodium hydroxide solution of 20-40%, weight with respect to the aqueous solution, add the potassium permanganate of 2-5 ‰, the clorox of 5-10%, be heated to 60-100 ℃, rush to air and stir and make it full and uniform, make that the tin of tank body is plumbous residually to be lower than 0.5%;
The 3rd step: along with the plumbous negative pole that dissolves the tin sodium plumbite that generates of alkaline mother liquor tin, reclaim out tin and the lead of simple substance with electrolysis process, the market value of these two kinds of metals is all higher at present, effectively recycles non-renewable metals resources, neither waste is environmental again;
The 4th step: obtain from mother liquor after the tin lead, collect mother liquor, again recycle does not cause mother liquor reagent waste and blowdown contaminate environment.
As an optimal technical scheme of the present invention, wherein used potassium permanganate is 5-6 ‰ in the first step.
As another optimal technical scheme of the present invention, wherein used potassium permanganate is 3-5 ‰ in the second step, and clorox is 5-6%.
As another optimal technical scheme of the present invention, wherein second step is heated to 80 ℃.
Adopt detin lead method of the present invention, can be effectively plumbous except detin from water tank, can not corrode copper, be a kind of novel method of less energy-consumption.
Description of drawings
Fig. 1 is the schema of the novel method of expression a kind of water tank detin lead of the present invention.
Embodiment
Below, describe the preferred embodiments of the present invention in detail.Need to prove before this, employed term or word can not limited interpretation be the implication in common implication or the dictionary in this specification and claims book, and should be based in order to illustrate that in the best way principle that its invention contriver can suitably define the concept of term is interpreted as meeting implication and the concept of the technology of the present invention thought.Thereupon, the scheme that represents among the embodiment that this specification sheets is put down in writing is one of most preferred embodiment of the present invention, can not represent technological thought of the present invention fully, therefore should be understood that to have for the present invention various equivalents and the variation that can replace.
Embodiment 1
Fig. 1 is the schema of the novel method of expression a kind of water tank detin lead of the present invention, and it may further comprise the steps:
The first step: crack the water tank solder joint; In water tank, add 100 premium on currency, solder joint is dipped in the water fully, add 40kg sodium hydroxide and 0.5kg potassium permanganate, plumbous except detin fast;
Second step: crack the water tank behind the solder joint, be placed on 200 liters of compound concentrations and be in 20% the sodium hydroxide, add 0.3kg potassium permanganate, 5kg clorox, be heated to 80 ℃, rush to air and stir and make it full and uniform, make that the tin of tank body is plumbous residually to be lower than 0.5%;
The 3rd step: along with the plumbous negative pole that dissolves the tin sodium plumbite that generates of alkaline mother liquor tin, reclaim out tin and the lead of simple substance with electrolysis process, the market value of these two kinds of metals is all higher at present, effectively recycles non-renewable metals resources, neither waste is environmental again;
The 4th step: obtain from mother liquor after the tin lead, collect mother liquor, again recycle does not cause mother liquor reagent waste and blowdown contaminate environment.
Embodiment 2
Fig. 1 is the schema of the novel method of expression a kind of water tank detin lead of the present invention, and it may further comprise the steps:
The first step: crack the water tank solder joint; In water tank, add 100 premium on currency, solder joint is dipped in the water fully, add 30kg sodium hydroxide and 0.8kg potassium permanganate, plumbous except detin fast;
Second step: crack the water tank behind the solder joint, be placed on 200 liters of compound concentrations and be in 30% the sodium hydroxide, add 0.2kg potassium permanganate, 10kg clorox, be heated to 60 ℃, rush to air and stir and make it full and uniform, make that the tin of tank body is plumbous residually to be lower than 0.5%;
The 3rd step: along with the plumbous negative pole that dissolves the tin sodium plumbite that generates of alkaline mother liquor tin, reclaim out tin and the lead of simple substance with electrolysis process, the market value of these two kinds of metals is all higher at present, effectively recycles non-renewable metals resources, neither waste is environmental again;
The 4th step: obtain from mother liquor after the tin lead, collect mother liquor, again recycle does not cause mother liquor reagent waste and blowdown contaminate environment.
Embodiment 3
Fig. 1 is the schema of the novel method of expression a kind of water tank detin lead of the present invention, and it may further comprise the steps:
The first step: crack the water tank solder joint; In water tank, add 100 premium on currency, solder joint is dipped in the water fully, add 50kg sodium hydroxide and 0.6kg potassium permanganate, plumbous except detin fast;
Second step: crack the water tank behind the solder joint, be placed on 200 liters of compound concentrations and be in 40% the sodium hydroxide, add 0.5kg potassium permanganate, 6kg clorox, be heated to 100 ℃, rush to air and stir and make it full and uniform, make that the tin of tank body is plumbous residually to be lower than 0.5%;
The 3rd step: along with the plumbous negative pole that dissolves the tin sodium plumbite that generates of alkaline mother liquor tin, reclaim out tin and the lead of simple substance with electrolysis process, the market value of these two kinds of metals is all higher at present, effectively recycles non-renewable metals resources, neither waste is environmental again;
The 4th step: obtain from mother liquor after the tin lead, collect mother liquor, again recycle does not cause mother liquor reagent waste and blowdown contaminate environment.
It should be noted that, although the present invention is described and illustrates with reference to embodiment, but and do not mean that the present invention is limited to the embodiment of these descriptions, those skilled in the art can therefrom derive many different variants, and they all will be covered in the true spirit and scope of claim of the present invention.
Claims (4)
1. the novel method of a water tank detin lead, it may further comprise the steps:
The first step: crack the water tank solder joint, in water tank, add entry, solder joint is dipped in the water fully, with respect to the weight of water, add the sodium hydroxide of 30-50% and the potassium permanganate of 5-8 ‰, plumbous except detin fast;
Second step: crack the water tank behind the solder joint, being placed on the concentration for preparing is in the aqueous sodium hydroxide solution of 20-40%, weight with respect to the aqueous solution, add the potassium permanganate of 2-5 ‰, the clorox of 5-10%, be heated to 60-100 ℃, rush to air and stir and make it full and uniform, make that the tin of tank body is plumbous residually to be lower than 0.5%;
The 3rd step: along with the plumbous negative pole that dissolves the tin sodium plumbite that generates of alkaline mother liquor tin, reclaim out tin and the lead of simple substance with electrolysis process;
The 4th step: from mother liquor, obtain after the tin lead, collect mother liquor, again recycle.
2. the novel method of water tank detin lead according to claim 1, wherein used potassium permanganate is 5-6 ‰ in the first step.
3. the novel method of water tank detin lead according to claim 1, wherein used potassium permanganate is 3-5 ‰ in the second step, clorox is 5-6%.
4. the novel method of water tank detin lead according to claim 1, wherein second step is heated to 80 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101985312A CN102877088A (en) | 2011-07-15 | 2011-07-15 | Novel method for removing tin and lead from water tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101985312A CN102877088A (en) | 2011-07-15 | 2011-07-15 | Novel method for removing tin and lead from water tank |
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| Publication Number | Publication Date |
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| CN102877088A true CN102877088A (en) | 2013-01-16 |
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| CN2011101985312A Withdrawn CN102877088A (en) | 2011-07-15 | 2011-07-15 | Novel method for removing tin and lead from water tank |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB334738A (en) * | 1929-03-28 | 1930-09-11 | Siemens Ag | Process for the electrolytic recovery of tin in the form of compact plates of any desired thickness, from alkaline lyes containing alkali-stannate |
| US4409072A (en) * | 1979-04-21 | 1983-10-11 | Osaka Lead Refinery Co., Ltd. | Method of collecting lead from ashes containing lead compounds |
| CN1072218A (en) * | 1991-11-09 | 1993-05-19 | 洛阳铜加工厂 | The recovery of copper and copper alloy products lead-tin on face |
| US6290835B1 (en) * | 2000-02-07 | 2001-09-18 | Rd Chemical Company | Treatment of waste from printed circuit board production for recovery of tin and environmentally safe disposal |
| CN101928958A (en) * | 2010-07-21 | 2010-12-29 | 北京科技大学 | Method and device for recovering metal tin from lead separated slag of copper anode slime |
| CN101956214A (en) * | 2010-09-30 | 2011-01-26 | 北京化工大学 | Method for recycling secondary lead by electrolyzing alkaline leaded solution |
-
2011
- 2011-07-15 CN CN2011101985312A patent/CN102877088A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB334738A (en) * | 1929-03-28 | 1930-09-11 | Siemens Ag | Process for the electrolytic recovery of tin in the form of compact plates of any desired thickness, from alkaline lyes containing alkali-stannate |
| US4409072A (en) * | 1979-04-21 | 1983-10-11 | Osaka Lead Refinery Co., Ltd. | Method of collecting lead from ashes containing lead compounds |
| CN1072218A (en) * | 1991-11-09 | 1993-05-19 | 洛阳铜加工厂 | The recovery of copper and copper alloy products lead-tin on face |
| US6290835B1 (en) * | 2000-02-07 | 2001-09-18 | Rd Chemical Company | Treatment of waste from printed circuit board production for recovery of tin and environmentally safe disposal |
| CN101928958A (en) * | 2010-07-21 | 2010-12-29 | 北京科技大学 | Method and device for recovering metal tin from lead separated slag of copper anode slime |
| CN101956214A (en) * | 2010-09-30 | 2011-01-26 | 北京化工大学 | Method for recycling secondary lead by electrolyzing alkaline leaded solution |
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Application publication date: 20130116 |