CN110699558A - Method for extracting high-purity tin from industrial waste - Google Patents
Method for extracting high-purity tin from industrial waste Download PDFInfo
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- CN110699558A CN110699558A CN201910254364.5A CN201910254364A CN110699558A CN 110699558 A CN110699558 A CN 110699558A CN 201910254364 A CN201910254364 A CN 201910254364A CN 110699558 A CN110699558 A CN 110699558A
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- tin
- industrial waste
- metal
- purity
- aqueous solution
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B25/00—Obtaining tin
- C22B25/06—Obtaining tin from scrap, especially tin scrap
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B25/00—Obtaining tin
- C22B25/04—Obtaining tin by wet processes
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for extracting high-purity tin from industrial waste, which comprises the steps of adding sodium carbonate, sodium hydroxide and sulfate into the industrial waste for mixing, then adding a solvent to prepare a wet material, heating to 650-800 ℃, and separating the metal tin from other slag materials, wherein the fluidity of the metal tin in the industrial waste is the best; passing the metallic tin and other slag materials through a 20-mesh sieve, and then putting the sieved metallic tin and other slag materials into a drying oven at 50-60 ℃ for drying until the weight is constant; adding industrial glycerin aqueous solution into metal tin and other slag materials, stirring uniformly, heating and stewing in a constant-temperature heating jacket at normal pressure, wherein the heating time is about 4 ℃/min, and the stewing temperature is 150-250 ℃, and the method for extracting high-purity tin from industrial waste can completely dilute substances in the industrial waste by adding various chemical agents, and can separate out the metal tin by utilizing the characteristics of the chemical substances, so that the purity of the prepared metal tin can reach 98 percent by utilizing the process, and the method is simple to operate, has uncomplicated flow and has good popularization value.
Description
Technical Field
The invention belongs to the field of new materials, and particularly relates to a method for extracting high-purity tin from industrial waste.
Background
Industrial waste refers to solid waste discharged during the production process of machinery, light industry and other industries. Such as cutting chips, grinding chips, waste molding sand and the like in the mechanical industry, activated carbon residues in the food industry, bricks, tiles, gravel, concrete fragments and the like in the silicate industry and the construction industry;
however, the prior art has the defects of complicated industrial waste treatment method, high cost and unsatisfactory purity of the prepared metal, and therefore, a method for extracting high-purity tin from industrial waste is provided.
Disclosure of Invention
The invention mainly aims to provide a method for extracting high-purity tin from industrial waste, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method for extracting high-purity tin from industrial waste comprises the following steps:
s1, adding sodium carbonate, sodium hydroxide and sulfate into the industrial waste, mixing, then adding a solvent to prepare a wet material, heating to 650-800 ℃, and enabling the metal tin in the industrial waste to have the best fluidity and to be separated from other slag materials;
s2, passing the metallic tin and other slag through a 20-mesh sieve, and drying in an oven at 50-60 ℃ to constant weight;
s3, adding industrial glycerol aqueous solution into the metallic tin and other slag materials, stirring uniformly, heating and stewing in a constant-temperature heating jacket at normal pressure for about 4 ℃/min at the stewing temperature of 150-250 ℃ for 2.5-5 h;
s4, dipping the mixed material by using sulfuric acid, and leaching for 60min at 1360 ℃ while stirring, so that the high-melting-point metal in the mixed material forms soluble sulfate which enters a solution and is separated from tin in slag;
s5, slowly adding the prepared tin metal into boiling water 30 times of the weight of the tin metal, quickly stirring and fully dissolving, then starting suction filtration by using a G3 sand core funnel, washing by using glycerol aqueous solution 40 times of the weight of the tin metal at the temperature of 400 ℃, carrying out suction filtration twice, washing by using distilled water, carrying out suction filtration twice again, and obtaining a filter cake which is pure metal tin after washing.
Preferably, the sodium hydroxide is in aqueous solution and has a density of 5.130L/m for thin film cultivation.
Preferably, the industrial glycerol aqueous solution is dissolved in 12 times of ethyl acetate.
Preferably, the sulfate is one of calcium sulfate, barium sulfate and ferrous sulfate.
Preferably, the glycerol aqueous solution thereofThe density was 3.75g/cm3。
Preferably, the concentration of the industrial glycerol aqueous solution is 0.9 to 1.2 mol/L.
Compared with the prior art, the invention has the following beneficial effects: according to the method for extracting the high-purity tin from the industrial waste, various chemical agents are added, the substances in the industrial waste can be completely diluted, the metal tin is separated out by utilizing the characteristics of the chemical substances, the purity of the prepared metal tin can reach 98% by utilizing the process, and meanwhile, the method is simple to operate, simple in process and high in popularization value.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The method for extracting high-purity tin from industrial waste comprises the steps of adding sodium carbonate, sodium hydroxide and sulfate into the industrial waste for mixing during preparation, wherein the sodium hydroxide is aqueous solution and has the density of 5.130L/m, then adding a solvent for preparing wet materials, heating to 650-800 ℃, and enabling the metal tin in the industrial waste to have the best fluidity and to be separated from other slag materials; passing the metallic tin and other slag materials through a 20-mesh sieve, and then putting the sieved metallic tin and other slag materials into a drying oven at 50-60 ℃ for drying until the weight is constant; adding industrial glycerol aqueous solution into metal tin and other slag materials, stirring uniformly, dissolving the industrial glycerol aqueous solution in 12 times of ethyl acetate, wherein sulfate is one of calcium sulfate, barium sulfate and ferrous sulfate, heating and cooking at normal pressure in a constant-temperature heating sleeve, wherein the concentration of the industrial glycerol aqueous solution is 0.9-1.2mol/L, the heating time is about 4 ℃/min, the cooking temperature is 150-250 ℃, and the cooking time is 2.5-5 hours; soaking the mixed material by using sulfuric acid, and leaching for 60min at 1360 ℃ while stirring, so that the high-melting-point metal in the mixed material forms soluble sulfate which enters a solution and is separated from tin in slag; the prepared tin metal is slowly added into boiling water which is 30 times of the weight of the tin metal, the boiling water is quickly stirred and fully dissolved, then the filtration is started by using a G3 sand core funnel, the glycerol aqueous solution which is 40 times of the weight of the tin metal at the temperature of 400 ℃ is used for washing and filtration twice, the distilled water is used for washing and filtration twice again, and the attachments on the surface of the tin metal can be completely removed through filtration for many times, so that the purity is higher, and the obtained filter cake is pure tin metal after the washing is finished.
Example 1
Adding sodium carbonate, sodium hydroxide and sulfate into industrial waste for mixing, carrying out dry distillation on the industrial waste with the density of the sodium hydroxide being 5.130L/m, then adding a solvent to prepare a wet material, heating to 650 ℃, and separating the metal tin from other slag materials, wherein the fluidity of the metal tin in the industrial waste is the best; passing the metallic tin and other slag materials through a 20-mesh sieve, and then putting the sieved metallic tin and other slag materials into a 50 ℃ oven to be dried to constant weight; adding industrial glycerol aqueous solution into metal tin and other slag materials, stirring uniformly, dissolving the industrial glycerol aqueous solution in 12 times of ethyl acetate, wherein sulfate is one of calcium sulfate, barium sulfate and ferrous sulfate, heating and cooking at normal pressure in a constant-temperature heating sleeve, wherein the concentration of the industrial glycerol aqueous solution is 0.9mol/L, the heating time is about 4 ℃/min, the cooking temperature is 150 ℃, and the cooking time is 2.5 hours; soaking the mixed material by using sulfuric acid, and leaching for 60min at 1360 ℃ while stirring, so that the high-melting-point metal in the mixed material forms soluble sulfate which enters a solution and is separated from tin in slag; the prepared tin metal is slowly added into boiling water which is 30 times of the weight of the tin metal, the boiling water is quickly stirred and fully dissolved, then the filtration is started by using a G3 sand core funnel, the glycerol aqueous solution which is 40 times of the weight of the tin metal at the temperature of 400 ℃ is used for washing and filtration twice, the glycerol aqueous solution is used for washing and filtration twice again, and the attachments on the surface of the tin metal can be completely removed through filtration for a plurality of times, so that the purity is higher, after the washing is finished, the obtained filter cake is the pure tin metal, and through detection, the purity of the obtained tin metal is 98%, the ductility is good, and the surface is a silvery.
Example 2
Adding sodium carbonate, sodium hydroxide and sulfate into industrial waste for mixing, carrying out dry distillation on the industrial waste with the density of the sodium hydroxide being 5.130L/m, then adding a solvent to prepare a wet material, heating to 800 ℃, and separating the metal tin from other slag materials, wherein the fluidity of the metal tin in the industrial waste is the best; passing the metallic tin and other slag materials through a 20-mesh sieve, and then putting the sieved metallic tin and other slag materials into a 60 ℃ drying oven to be dried to constant weight; adding industrial glycerol aqueous solution into metal tin and other slag materials, stirring uniformly, dissolving the industrial glycerol aqueous solution in 12 times of ethyl acetate, wherein sulfate is one of calcium sulfate, barium sulfate and ferrous sulfate, heating and cooking at normal pressure in a constant-temperature heating sleeve, wherein the concentration of the industrial glycerol aqueous solution is 1.2mol/L, the heating time is about 4 ℃/min, the cooking temperature is 250 ℃, and the cooking time is 5 hours; soaking the mixed material by using sulfuric acid, and leaching for 60min at 1360 ℃ while stirring, so that the high-melting-point metal in the mixed material forms soluble sulfate which enters a solution and is separated from tin in slag; the prepared tin metal is slowly added into boiling water which is 30 times of the weight of the tin metal, the boiling water is quickly stirred and fully dissolved, then the filtration is started by using a G3 sand core funnel, the glycerol aqueous solution which is 40 times of the weight of the tin metal at the temperature of 400 ℃ is used for washing and filtration twice, the glycerol aqueous solution is used for washing and filtration twice again, and the attachments on the surface of the tin metal can be completely removed through filtration for a plurality of times, so that the purity is higher, after the washing is finished, the obtained filter cake is the pure tin metal, and the obtained tin metal has the purity of 99 percent, good ductility and silvery white solid objects on the surface through detection.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A method for extracting high-purity tin from industrial waste is characterized by comprising the following steps:
s1, adding sodium carbonate, sodium hydroxide and sulfate into the industrial waste, mixing, then adding a solvent to prepare a wet material, heating to 650-800 ℃, and enabling the metal tin in the industrial waste to have the best fluidity and to be separated from other slag materials;
s2, passing the metallic tin and other slag through a 20-mesh sieve, and drying in an oven at 50-60 ℃ to constant weight;
s3, adding industrial glycerol aqueous solution into the metallic tin and other slag materials, stirring uniformly, heating and stewing in a constant-temperature heating jacket at normal pressure for about 4 ℃/min at the stewing temperature of 150-250 ℃ for 2.5-5 h;
s4, dipping the mixed material by using sulfuric acid, and leaching for 60min at 1360 ℃ while stirring, so that the high-melting-point metal in the mixed material forms soluble sulfate which enters a solution and is separated from tin in slag;
s5, slowly adding the prepared tin metal into boiling water 30 times of the weight of the tin metal, quickly stirring and fully dissolving, then starting suction filtration by using a G3 sand core funnel, washing by using glycerol aqueous solution 40 times of the weight of the tin metal at the temperature of 400 ℃, carrying out suction filtration twice, washing by using distilled water, carrying out suction filtration twice again, and obtaining a filter cake which is pure metal tin after washing.
2. The method for extracting high-purity tin from industrial waste according to claim 1, wherein the method comprises the following steps: the sodium hydroxide is in water solution, and the density is 5.130L/m.
3. The method for extracting high-purity tin from industrial waste according to claim 1, wherein the method comprises the following steps: the industrial glycerol aqueous solution was dissolved in 12 times of ethyl acetate.
4. The method for extracting high-purity tin from industrial waste according to claim 1, wherein the method comprises the following steps: the sulfate is one of calcium sulfate, barium sulfate and ferrous sulfate.
5. The process of claim 1, wherein the extraction of high purity tin from industrial waste comprises: the density of the glycerol aqueous solution is 3.75g/cm3。
6. The method for extracting high-purity tin from industrial waste according to claim 1, wherein the method comprises the following steps: the concentration of the industrial glycerol aqueous solution is 0.9-1.2 mol/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910254364.5A CN110699558A (en) | 2019-04-02 | 2019-04-02 | Method for extracting high-purity tin from industrial waste |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910254364.5A CN110699558A (en) | 2019-04-02 | 2019-04-02 | Method for extracting high-purity tin from industrial waste |
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| CN110699558A true CN110699558A (en) | 2020-01-17 |
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| CN201910254364.5A Withdrawn CN110699558A (en) | 2019-04-02 | 2019-04-02 | Method for extracting high-purity tin from industrial waste |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115011814A (en) * | 2022-06-09 | 2022-09-06 | 浙江亚通焊材有限公司 | Method for efficiently recovering tin from tin slag generated in wave soldering |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2261443A (en) * | 1991-11-15 | 1993-05-19 | Compeq Manufacturing Co Limite | Process for recovering tin from a waste liquid containing tin recovered from printed circuit boards |
| TW312707B (en) * | 1996-02-05 | 1997-08-11 | Nat Science Council | Process for recovering solder metals from solder plating effluents and sludges |
| CN103695653A (en) * | 2014-01-02 | 2014-04-02 | 沈少波 | Method of extracting noble metals on circuit board by wet process |
| CN104831077A (en) * | 2015-04-01 | 2015-08-12 | 郴州雄风环保科技有限公司 | Method for extracting and separating indium and tin from indium-containing leaching residues |
| CN105969992A (en) * | 2016-07-04 | 2016-09-28 | 中节能（汕头）循环经济有限公司 | Method for recycling fine tin from waste circuit board |
-
2019
- 2019-04-02 CN CN201910254364.5A patent/CN110699558A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2261443A (en) * | 1991-11-15 | 1993-05-19 | Compeq Manufacturing Co Limite | Process for recovering tin from a waste liquid containing tin recovered from printed circuit boards |
| TW312707B (en) * | 1996-02-05 | 1997-08-11 | Nat Science Council | Process for recovering solder metals from solder plating effluents and sludges |
| CN103695653A (en) * | 2014-01-02 | 2014-04-02 | 沈少波 | Method of extracting noble metals on circuit board by wet process |
| CN104831077A (en) * | 2015-04-01 | 2015-08-12 | 郴州雄风环保科技有限公司 | Method for extracting and separating indium and tin from indium-containing leaching residues |
| CN105969992A (en) * | 2016-07-04 | 2016-09-28 | 中节能（汕头）循环经济有限公司 | Method for recycling fine tin from waste circuit board |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115011814A (en) * | 2022-06-09 | 2022-09-06 | 浙江亚通焊材有限公司 | Method for efficiently recovering tin from tin slag generated in wave soldering |
| CN115011814B (en) * | 2022-06-09 | 2023-08-22 | 浙江亚通新材料股份有限公司 | Method for efficiently recycling tin from tin slag generated in wave soldering |
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Application publication date: 20200117 |
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