CN105886778A - Metal extracting method for waste electronic product - Google Patents
Metal extracting method for waste electronic product Download PDFInfo
- Publication number
- CN105886778A CN105886778A CN201610322758.6A CN201610322758A CN105886778A CN 105886778 A CN105886778 A CN 105886778A CN 201610322758 A CN201610322758 A CN 201610322758A CN 105886778 A CN105886778 A CN 105886778A
- Authority
- CN
- China
- Prior art keywords
- solution
- chip
- extracting method
- metal
- silver
- 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.)
- Pending
Links
Classifications
-
- 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
- C22B7/007—Wet processes by acid leaching
-
- 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
- C22B11/042—Recovery of noble metals from waste materials
- C22B11/046—Recovery of noble metals from waste materials from manufactured products, e.g. from printed circuit boards, from photographic films, paper or baths
-
- 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 discloses a metal extracting method for a waste electronic product. The metal extracting method comprises the following steps: taking down a chip of the waste electronic chip, and putting the chip into a concentrated sulfuric acid solution with concentration being 95% to dissolve; 72 hours after the chip is dissolved, taking out the un-dissolved part, filtering the solution, and taking the filtered solution for later use; adding sodium chloride into the filtered solution for enabling silver in the solution to precipitate to generate silver chloride; adding a zinc plate and a hydrochloric acid solution with concentration being 40% into the solution for reducing the silver chloride into elemental silver, filtering the solution, and taking filter residues for later use; and smelting and purifying the filtered filter residues, thereby obtaining a final product metal sliver. Compared with the prior art, the metal extracting method is simple and quick, and can effectively extract metal chip in a waste electronic product chip, so that the recovery utilization rate of the electronic product is increased, and therefore, the metal extracting method has a promotion and use value.
Description
Technical field
A kind of method that the present invention relates to chemical extraction metal, particularly relates to the gold in a kind of Waste ammunition
Belong to extracting method.
Background technology
Electronic product is the Related product with electric energy as working foundation, specifically includes that phone, television set, shadow
Disc player (VCD, SVCD, DVD), videocorder, video camera, radio, radio cassette player, combination sound box, swash
Light phonograph (CD), computer, mobile communication product etc..And these electronic products include the chip of integrated circuit,
Volume is the least, may often be such that a part for computer or other electronic equipments.In prior art, electronic product gives up
Mostly do not make full use of after old, then containing useful noble metal in Waste ammunition, need a kind of quick
Method recycled.
Summary of the invention
The purpose of the present invention is that provides the metal in a kind of Waste ammunition to solve the problems referred to above
Extracting method.
The present invention is achieved through the following technical solutions above-mentioned purpose:
The present invention comprises the following steps:
(1) chip of Waste ammunition is taken off, put in the concentrated sulfuric acid solution of 95% and dissolve；
(2) dissolving after 72 hours and take out undissolved part, filtered by solution, take after filtration is molten
Liquid is standby；
(3) adding sodium chloride in the solution after filtering, stand 1 hour, the addition of sodium chloride is solution
5%, use the silver precipitation in solution to produce silver chloride；
(4) again in solution, add zinc metal sheet and 40% hydrochloric acid solution makes silver chloride reduction become elemental silver, its zinc
Sheet and hydrochloric acid ratio are 1:4, and its zinc metal sheet and hydrochloric acid account for the 8% of solution；
(5) solution is filtered, take filtering residue standby；
(6) filtering residue after filtering carries out melting purification, obtains end product argent.
The beneficial effects of the present invention is:
The present invention is a kind of METAL EXTRACTION method in Waste ammunition, compared with prior art, the present invention
Method simple, quick, it is possible to the effective argent extracted in Waste ammunition chip, thus improve
The recovery utilization rate of electronic product, has the value promoted the use of.
Detailed description of the invention
The invention will be further described below:
The present invention comprises the following steps:
(1) chip of Waste ammunition is taken off, put in the concentrated sulfuric acid solution of 95% and dissolve；
(2) dissolving after 72 hours and take out undissolved part, filtered by solution, take after filtration is molten
Liquid is standby；
(3) adding sodium chloride in the solution after filtering, stand 1 hour, the addition of sodium chloride is solution
5%, use the silver precipitation in solution to produce silver chloride；
(4) again in solution, add zinc metal sheet and 40% hydrochloric acid solution makes silver chloride reduction become elemental silver, its zinc
Sheet and hydrochloric acid ratio are 1:4, and its zinc metal sheet and hydrochloric acid account for the 8% of solution；
(5) solution is filtered, take filtering residue standby；
(6) filtering residue after filtering carries out melting purification, obtains end product argent.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.The industry
Skilled person will appreciate that, the present invention is not restricted to the described embodiments, in above-described embodiment and description
The principle that the present invention is simply described described, without departing from the spirit and scope of the present invention, the present invention
Also having various changes and modifications, these changes and improvements both fall within scope of the claimed invention.This
The claimed scope of invention is defined by appending claims and equivalent thereof.
Claims (1)
1. the METAL EXTRACTION method in a Waste ammunition, it is characterised in that comprise the following steps:
(1) chip of Waste ammunition is taken off, put in the concentrated sulfuric acid solution of 95% and dissolve；
(2) dissolving after 72 hours and take out undissolved part, filtered by solution, take after filtration is molten
Liquid is standby；
(3) adding sodium chloride in the solution after filtering, stand 1 hour, the addition of sodium chloride is solution
5%, use the silver precipitation in solution to produce silver chloride；
(4) again in solution, add zinc metal sheet and 40% hydrochloric acid solution makes silver chloride reduction become elemental silver, its zinc
Sheet and hydrochloric acid ratio are 1:4, and its zinc metal sheet and hydrochloric acid account for the 8% of solution；
(5) solution is filtered, take filtering residue standby；
(6) filtering residue after filtering carries out melting purification, obtains end product argent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610322758.6A CN105886778A (en) | 2016-05-16 | 2016-05-16 | Metal extracting method for waste electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610322758.6A CN105886778A (en) | 2016-05-16 | 2016-05-16 | Metal extracting method for waste electronic product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105886778A true CN105886778A (en) | 2016-08-24 |
Family
ID=56716341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610322758.6A Pending CN105886778A (en) | 2016-05-16 | 2016-05-16 | Metal extracting method for waste electronic product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105886778A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059938A (en) * | 1990-09-12 | 1992-04-01 | 云南师范大学 | Wet preparing silver nitrate with anode mad of electrolytic lead |
| CN1603432A (en) * | 2004-10-28 | 2005-04-06 | 南京大学 | Technological process for extracting gold, silver and palladium from electronic industry waste |
| CN101230470A (en) * | 2007-11-02 | 2008-07-30 | 北京科技大学 | Method for reclaiming metals by classified electrolysis of electron wastes |
| CN103667707A (en) * | 2013-12-04 | 2014-03-26 | 江苏融源再生资源科技有限公司 | Method of recovering gold and silver from a waste circuit board |
| RU2535266C2 (en) * | 2013-04-01 | 2014-12-10 | Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" | Silver refining method |
-
2016
- 2016-05-16 CN CN201610322758.6A patent/CN105886778A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1059938A (en) * | 1990-09-12 | 1992-04-01 | 云南师范大学 | Wet preparing silver nitrate with anode mad of electrolytic lead |
| CN1603432A (en) * | 2004-10-28 | 2005-04-06 | 南京大学 | Technological process for extracting gold, silver and palladium from electronic industry waste |
| CN101230470A (en) * | 2007-11-02 | 2008-07-30 | 北京科技大学 | Method for reclaiming metals by classified electrolysis of electron wastes |
| RU2535266C2 (en) * | 2013-04-01 | 2014-12-10 | Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Уральский федеральный университет имени первого Президента России Б.Н. Ельцина" | Silver refining method |
| CN103667707A (en) * | 2013-12-04 | 2014-03-26 | 江苏融源再生资源科技有限公司 | Method of recovering gold and silver from a waste circuit board |
Non-Patent Citations (1)
| Title |
|---|
| 周能等: "废旧银锌纽扣电池中银的回收", 《玉林师范学院学报（自然科学）》 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160824 |