CN111926185A - Recycling process of precious metal - Google Patents
Recycling process of precious metal Download PDFInfo
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- CN111926185A CN111926185A CN202010656205.0A CN202010656205A CN111926185A CN 111926185 A CN111926185 A CN 111926185A CN 202010656205 A CN202010656205 A CN 202010656205A CN 111926185 A CN111926185 A CN 111926185A
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- Prior art keywords
- recovery
- gold
- article
- beneficiation agent
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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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
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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
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals by wet processes
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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
- C22B23/00—Obtaining nickel or cobalt
- C22B23/04—Obtaining nickel or cobalt by wet processes
- C22B23/0407—Leaching 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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- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a precious metal recycling process, which comprises the steps of preparing a recovery solution, wherein the recovery solution comprises a gold beneficiation agent, anti-dyeing salt and water, and the ratio of the gold beneficiation agent to the anti-dyeing salt is 2: 1; putting an article needing to recover metal into recovery liquid, and vibrating the article; taking out the article within a set time; according to the prior art, the precious metals required by the waste liquid recovery can be used for gold, silver and nickel removal, and the recovery liquid has no strong toxicity, does not need a specific room, and greatly reduces the cost of enterprises; and recovery time is greatly reduced.
Description
Technical Field
The invention relates to a precious metal recycling process.
Background
The existing precious metal recycling efficiency is very low, for example, gold is often plated in a ceramic packaging shell, potassium cyanide is adopted in the existing technology for directly carrying out gold withdrawal, potassium cyanide is a substance with very strong toxicity, so that staff are required to bring gas masks and protective clothing in the recycling process, a closed space is also required for special recycling, and after the gold recycling is finished, the remaining waste liquid has very high toxicity and can be discharged after special treatment; and after the metal is recycled, the ceramic package housing is damaged; and it is only the recovery of gold, and does not recover nickel and silver therein, causing huge waste.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a precious metal recycling process, which can rapidly recycle metals, and the recycling solution has no strong toxicity and is easy to operate.
The invention is realized by the following steps: a precious metal recycling process specifically comprises the following steps:
step 1, preparing a recovery solution, wherein the recovery solution comprises a gold beneficiation agent, anti-dyeing salt and water, and the ratio of the gold beneficiation agent to the anti-dyeing salt is 2: 1;
step 2, putting an article needing to be recovered into the recovery liquid, and vibrating the article;
step 3, taking out the article within a set time;
and 4, recovering the required noble metal from the waste liquid according to the prior art.
Further, the step 2 is further specifically: and placing the articles needing metal recovery in a rolling basket, immersing the rolling basket in the recovery liquid, and slowly rolling and fully contacting the recovery liquid after the recovery liquid submerges the plated parts.
Further, the step 1 is further specifically: preparing a recovery solution, wherein the recovery solution comprises a gold beneficiation agent, anti-dyeing salt and water, the ratio of the gold beneficiation agent to the anti-dyeing salt is 2:1, and the recovery solution is heated to 60 ℃.
Further, the noble metal is gold, silver or nickel.
Further, the dye-resistant salt is 30-45 g/L, and the gold beneficiation agent is 60-90 g/L.
The invention has the following advantages: the recovery liquid can be used for gold withdrawal, silver withdrawal and nickel withdrawal, has no strong toxicity, does not need a specific room, and greatly reduces the cost of enterprises; and the recovery time is greatly reduced; if the ceramic package shell is used for recycling the precious metals, the gold, the nickel and the silver in the ceramic package shell can be recycled in sequence, and the ceramic package shell can still be used and cannot be damaged after the precious metals are recycled.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
The idea of the invention is as follows:
as shown in fig. 1, the process for recycling precious metals of the present invention specifically comprises the following steps:
step 1, preparing a recovery solution, wherein the recovery solution comprises a gold beneficiation agent, anti-dyeing salt and water, the ratio of the gold beneficiation agent to the anti-dyeing salt is 2:1, the recovery solution is heated to 60 ℃, the anti-dyeing salt is 30-45 g/L, and the gold beneficiation agent is 60-90 g/L;
2, placing the articles needing metal recovery in a rolling basket, immersing the rolling basket in recovery liquid, slowly rolling and fully contacting the recovery liquid after the recovery liquid submerges the plated part;
step 3, taking out the article within a set time;
and 4, recovering the required noble metal from the waste liquid according to the prior art, wherein the noble metal is gold, silver or nickel.
Example one
The embodiment is used for removing gold, silver or nickel, and specifically comprises the following steps:
preparing a recovery solution, taking a proper amount of water, selecting 60g of gold beneficiation agent and 30g of anti-staining salt per liter of water, mixing the gold beneficiation agent and the anti-staining salt, fully reacting, filtering out insoluble substances, and transferring to a recovery tank for later use, wherein the pH value of the recovery solution is 12.
Placing an article needing metal recovery in a rolling basket, wherein the article needing metal recovery is a ceramic packaging shell, and gold with the thickness of 2 microns is plated on the ceramic packaging shell;
placing the articles needing to be recovered with metals in a rolling basket, immersing the rolling basket in a recovery solution, slowly rolling and fully contacting the recovery solution after the recovery solution submerges the articles needing to be recovered with the metals, completing gold recovery after 3-10 minutes, taking out the articles needing to be recovered with the metals, and adding a proper amount of zinc powder into the solution to obtain gold oxide precipitate; for the recovery of nickel, the recovery method includes an electrolytic method, an ion exchange method, a chemical precipitation method, a catalytic reduction method, a biological method, and the like; in the case of recovering silver, the silver is recovered by a conventional method of recovering silver. After the recovery is finished, the ceramic packaging shell can not be damaged, and the ceramic packaging shell can still be recovered for use.
The silver plating or the nickel plating can be recovered by repeating the above steps.
Example two
The embodiment is used for removing gold, silver or nickel, and specifically comprises the following steps:
preparing a recovery solution, taking a proper amount of water, selecting 75g of gold beneficiation agent and 37.5g of anti-staining salt per liter of water, mixing the gold beneficiation agent and the anti-staining salt, fully reacting, filtering out insoluble substances, and transferring to a recovery tank for later use, wherein the pH value of the recovery solution is 12.
Placing an article needing metal recovery in a rolling basket, wherein the article needing metal recovery is a ceramic packaging shell, and gold with the thickness of 2 microns is plated on the ceramic packaging shell;
placing the articles needing to be recovered with metals in a rolling basket, immersing the rolling basket in a recovery solution, slowly rolling and fully contacting the recovery solution after the recovery solution submerges the articles needing to be recovered with the metals, completing gold recovery after 3-10 minutes, taking out the articles needing to be recovered with the metals, and adding a proper amount of zinc powder into the solution to obtain gold oxide precipitate; for the recovery of nickel, the recovery method includes an electrolytic method, an ion exchange method, a chemical precipitation method, a catalytic reduction method, a biological method, and the like; in the case of recovering silver, the silver is recovered by a conventional method of recovering silver.
Repeating the above steps allows for the recovery of a single silver coating or a single nickel coating.
EXAMPLE III
The embodiment is used for removing gold, silver or nickel, and specifically comprises the following steps:
preparing a recovery solution, taking a proper amount of water, selecting 90g of gold beneficiation agent and 45g of anti-staining salt per liter of water, mixing the gold beneficiation agent and the anti-staining salt, fully reacting, filtering out insoluble substances, and transferring to a recovery tank for later use, wherein the pH value of the recovery solution is 12.
Placing an article needing metal recovery in a rolling basket, wherein the article needing metal recovery is a ceramic packaging shell, and gold with the thickness of 2 microns is plated on the ceramic packaging shell;
placing the articles needing to be recovered with metals in a rolling basket, immersing the rolling basket in a recovery solution, slowly rolling and fully contacting the recovery solution after the recovery solution submerges the articles needing to be recovered with the metals, completing gold recovery after 3-10 minutes, taking out the articles needing to be recovered with the metals, and adding a proper amount of zinc powder into the solution to obtain gold oxide precipitate; for the recovery of nickel, the recovery method includes an electrolytic method, an ion exchange method, a chemical precipitation method, a catalytic reduction method, a biological method, and the like; in the case of recovering silver, the silver is recovered by a conventional method of recovering silver.
The silver plating or the nickel plating can be recovered by repeating the above steps.
Example four
The embodiment is used for removing gold, silver or nickel, and specifically comprises the following steps:
preparing a recovery solution, taking a proper amount of water, selecting 80g of gold beneficiation agent and 40g of anti-staining salt per liter of water, mixing the gold beneficiation agent and the anti-staining salt, fully reacting, filtering out insoluble substances, and transferring to a recovery tank for later use, wherein the pH value of the recovery solution is 12.
Placing a plated part of an article needing metal recovery in a rolling basket, wherein the article needing metal recovery is a ceramic packaging shell, and gold with the thickness of 2 microns is plated on the ceramic packaging shell;
placing the articles needing to be recovered with metals in a rolling basket, immersing the rolling basket in a recovery solution, slowly rolling and fully contacting the recovery solution after the recovery solution submerges the articles needing to be recovered with metals, completing gold recovery after 3 minutes, taking out a plated part, and adding a proper amount of zinc powder into the solution to obtain gold oxide precipitate; for the recovery of nickel, the recovery method includes an electrolytic method, an ion exchange method, a chemical precipitation method, a catalytic reduction method, a biological method, and the like; in the case of recovering silver, the silver is recovered by a conventional method of recovering silver.
The silver plating or the nickel plating can be recovered by repeating the above steps.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (5)
1. A precious metal recycling process is characterized in that: the method specifically comprises the following steps:
step 1, preparing a recovery solution, wherein the recovery solution comprises a gold beneficiation agent, anti-dyeing salt and water, and the ratio of the gold beneficiation agent to the anti-dyeing salt is 2: 1;
step 2, putting an article needing to be recovered into the recovery liquid, and vibrating the article;
step 3, taking out the article within a set time;
and 4, recovering the required noble metal from the waste liquid according to the prior art.
2. The process of claim 1 for the recovery and reuse of precious metals, wherein: the step 2 is further specifically as follows: and placing the articles needing metal recovery in a rolling basket, immersing the rolling basket in the recovery liquid, and slowly rolling and fully contacting the recovery liquid after the recovery liquid submerges the plated parts.
3. The process of claim 1 for the recovery and reuse of precious metals, wherein: the step 1 is further specifically as follows: preparing a recovery solution, wherein the recovery solution comprises a gold beneficiation agent, anti-dyeing salt and water, the ratio of the gold beneficiation agent to the anti-dyeing salt is 2:1, and the recovery solution is heated to 60 ℃.
4. The process of claim 1 for the recovery and reuse of precious metals, wherein: the noble metal is gold, silver or nickel.
5. The process of claim 1 for the recovery and reuse of precious metals, wherein: the anti-dyeing salt is 30-45 g/L, and the gold beneficiation agent is 60-90 g/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010656205.0A CN111926185A (en) | 2020-07-09 | 2020-07-09 | Recycling process of precious metal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010656205.0A CN111926185A (en) | 2020-07-09 | 2020-07-09 | Recycling process of precious metal |
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| CN111926185A true CN111926185A (en) | 2020-11-13 |
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| CN202010656205.0A Pending CN111926185A (en) | 2020-07-09 | 2020-07-09 | Recycling process of precious metal |
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Citations (11)
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| CN1869285A (en) * | 2005-05-27 | 2006-11-29 | 佛山市顺德区汉达精密电子科技有限公司 | Decoating liquid |
| CN1896314A (en) * | 2005-07-11 | 2007-01-17 | 佛山市顺德区汉达精密电子科技有限公司 | Stabilized decoating liquid |
| CN103464305A (en) * | 2013-09-06 | 2013-12-25 | 广西鑫开力科技有限公司 | Noble metals beneficiation agent and preparation method and application thereof |
| CN103668204A (en) * | 2013-11-18 | 2014-03-26 | 王金良 | Process for deplating gold plated layer and recovering gold with cyanide-free gold stripping powder |
| CN103882240A (en) * | 2014-04-16 | 2014-06-25 | 芒市海华开发有限公司 | Method and equipment for extracting gold and silver from smelting slag |
| JP2014234550A (en) * | 2013-06-05 | 2014-12-15 | 株式会社臼井商事 | Elution promotion liquid and method for recovering noble metal |
| CN108277347A (en) * | 2017-06-26 | 2018-07-13 | 洪福安 | A kind of electroplating gold recovered liquid and its preparation method and application |
| CN108588720A (en) * | 2015-10-19 | 2018-09-28 | 江苏理工学院 | Method for deplating copper-based palladium-nickel alloy coating |
| CN110344080A (en) * | 2019-07-04 | 2019-10-18 | 苏州鑫达资源再生利用有限公司 | A method of extracting gold from waste of gold plating procedure |
| CN111041207A (en) * | 2019-11-28 | 2020-04-21 | 中国电器科学研究院股份有限公司 | Electrochemical gold leaching agent and method for recovering gold from waste gold-plated circuit board |
| CN111235401A (en) * | 2020-01-17 | 2020-06-05 | 广东华越环保科技有限公司 | Worn-out mobile phone circuit board bare board gold stripping process |
-
2020
- 2020-07-09 CN CN202010656205.0A patent/CN111926185A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1869285A (en) * | 2005-05-27 | 2006-11-29 | 佛山市顺德区汉达精密电子科技有限公司 | Decoating liquid |
| CN1896314A (en) * | 2005-07-11 | 2007-01-17 | 佛山市顺德区汉达精密电子科技有限公司 | Stabilized decoating liquid |
| JP2014234550A (en) * | 2013-06-05 | 2014-12-15 | 株式会社臼井商事 | Elution promotion liquid and method for recovering noble metal |
| CN103464305A (en) * | 2013-09-06 | 2013-12-25 | 广西鑫开力科技有限公司 | Noble metals beneficiation agent and preparation method and application thereof |
| CN103668204A (en) * | 2013-11-18 | 2014-03-26 | 王金良 | Process for deplating gold plated layer and recovering gold with cyanide-free gold stripping powder |
| CN103882240A (en) * | 2014-04-16 | 2014-06-25 | 芒市海华开发有限公司 | Method and equipment for extracting gold and silver from smelting slag |
| CN108588720A (en) * | 2015-10-19 | 2018-09-28 | 江苏理工学院 | Method for deplating copper-based palladium-nickel alloy coating |
| CN108277347A (en) * | 2017-06-26 | 2018-07-13 | 洪福安 | A kind of electroplating gold recovered liquid and its preparation method and application |
| CN110344080A (en) * | 2019-07-04 | 2019-10-18 | 苏州鑫达资源再生利用有限公司 | A method of extracting gold from waste of gold plating procedure |
| CN111041207A (en) * | 2019-11-28 | 2020-04-21 | 中国电器科学研究院股份有限公司 | Electrochemical gold leaching agent and method for recovering gold from waste gold-plated circuit board |
| CN111235401A (en) * | 2020-01-17 | 2020-06-05 | 广东华越环保科技有限公司 | Worn-out mobile phone circuit board bare board gold stripping process |
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Application publication date: 20201113 |
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