CN108085508A - The recovery method of copper in waste and old circuit board - Google Patents
The recovery method of copper in waste and old circuit board Download PDFInfo
- Publication number
- CN108085508A CN108085508A CN201611031443.2A CN201611031443A CN108085508A CN 108085508 A CN108085508 A CN 108085508A CN 201611031443 A CN201611031443 A CN 201611031443A CN 108085508 A CN108085508 A CN 108085508A
- Authority
- CN
- China
- Prior art keywords
- waste
- circuit board
- old circuit
- copper
- heating
- 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
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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
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0028—Smelting or converting
- C22B15/0052—Reduction smelting or converting
-
- 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
- C22B7/001—Dry processes
-
- 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)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of recovery methods of copper in waste and old circuit board, include the following steps：Waste and old circuit board by beater grinder is crushed, waste and old circuit board is ground into the fragment of a diameter of 0.15 0.25mm；Fragment is collected, is put into plasma arc furnace, heats 30 50min, the metal after heating is separated in the form of ball；Remaining metal ball after heating is collected；The metal ball of collection is added in reverberatory furnace, heavy oil, reducing agent and compressed air is added in, is refined；Copper material after refining is after cooling, you can is recycled.Present invention improves over original pyrogenic process recovery process, are that the preceding crushing of heating is more thorough first, next employs plasma arc furnace and is heated, efficiency of heating surface higher, and reverberatory furnace make use of to be refined, and improves the rate of recovery.
Description
Technical field
The present invention relates to a kind of recovery methods of copper in waste and old circuit board.
Background technology
Waste and old circuit board is one of common electronic waste, is contained in waste and old circuit board there are many noxious material or element, directly
Environment can be caused very big pollution by connecing discarding, still, be contained in waste and old circuit board there are many useful metals resources, for example, copper, gold,
The content highest of silver etc., wherein copper, accounts for 27% so that waste and old circuit board has very high recovery value.
The recovery method of copper has pyrogenic process recycling, mechanical approach recycling and wet chemical in currently used waste and old circuit board
Recycling etc., pyrogenic process recycling therein can cause environment very big pollution, and organic efficiency is relatively low mainly using burning.
The content of the invention
According to the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to：Offer one kind solves above-mentioned
Defect, removal process more cleans effectively, and improves the recovery method of copper in the waste and old circuit board of the rate of recovery of copper.
The technical solution adopted by the present invention to solve the technical problems is：The recovery method of copper in waste and old circuit board, including
Following steps：
A, waste and old circuit board by beater grinder is crushed, waste and old circuit board is ground into a diameter of 0.15-
The fragment of 0.25mm；
B, fragment is collected, be put into plasma arc furnace, heat 30-50min, the metal after heating is with ball-point pen type
Formula is separated；
C, remaining metal ball after heating is collected；
D, the metal ball of collection is added in reverberatory furnace, adds in heavy oil, reducing agent and compressed air, refined；
E, the copper material after refining is after cooling, you can is recycled.
In the b step and Step d, the exhaust gas of generation is recycled.Waste heat in exhaust gas can be carried out
Recycling, and play the role of reducing air pollution.
In the Step d, refining slag remaining after refining is crushed, is recycled.Refining slag contains about 30%
Copper, can be recycled.
Advantageous effect is possessed by the present invention：Present invention improves over original pyrogenic process recovery process, before being first heating
Crushing is more thorough, next employs plasma arc furnace and is heated, efficiency of heating surface higher, and reverberatory furnace make use of to carry out
Refining, improves the rate of recovery.
Specific embodiment
The embodiment of the present invention is described further below：
Below by way of specific embodiment, the invention will be further described, but not to limit the present invention, it is all in the present invention
Within spirit and principle, any modifications, equivalent replacements and improvements are made should all be included in the protection scope of the present invention.
Embodiment 1：
The recovery method of copper includes the following steps in waste and old circuit board：
A, waste and old circuit board by beater grinder is crushed, waste and old circuit board is ground into a diameter of 0.15-
The fragment of 0.25mm；
B, fragment is collected, be put into plasma arc furnace, heat 30min, the metal after heating is in the form of ball
It is separated；
C, remaining metal ball after heating is collected；
D, the metal ball of collection is added in reverberatory furnace, adds in heavy oil, reducing agent and compressed air, refined；
E, the copper material after refining is after cooling, you can is recycled.
In b step and Step d, the exhaust gas of generation is recycled.
In Step d, refining slag remaining after refining is crushed, is recycled.
Embodiment 2：
The present embodiment and the difference of embodiment 1 are, in b step, heating time 40min.
Embodiment 3：
The present embodiment and the difference of embodiment 1 are, in b step, heating time 50min.
Basic principle, main feature and the advantages of the present invention of the present invention has been shown and described above.The skill of the industry
Art personnel it should be appreciated that the present invention is not limited to the above embodiments, the above embodiments and description only describe
The principle of the present invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these
Changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and
Its equivalent thereof.
Claims (3)
1. the recovery method of copper in a kind of waste and old circuit board, it is characterised in that include the following steps：
A, waste and old circuit board by beater grinder is crushed, waste and old circuit board is ground into a diameter of 0.15-0.25mm
Fragment；
B, fragment is collected, be put into plasma arc furnace, heat 30-50min, the quilt in the form of ball of the metal after heating
Separation；
C, remaining metal ball after heating is collected；
D, the metal ball of collection is added in reverberatory furnace, adds in heavy oil, reducing agent and compressed air, refined；
E, the copper material after refining is after cooling, you can is recycled.
2. the recovery method of copper in waste and old circuit board according to claim 1, it is characterised in that：The b step and d steps
In rapid, the exhaust gas of generation is recycled.
3. the recovery method of copper in waste and old circuit board according to claim 1, it is characterised in that：It, will in the Step d
Remaining refining slag crushes after refining, is recycled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611031443.2A CN108085508A (en) | 2016-11-22 | 2016-11-22 | The recovery method of copper in waste and old circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611031443.2A CN108085508A (en) | 2016-11-22 | 2016-11-22 | The recovery method of copper in waste and old circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108085508A true CN108085508A (en) | 2018-05-29 |
Family
ID=62168648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611031443.2A Pending CN108085508A (en) | 2016-11-22 | 2016-11-22 | The recovery method of copper in waste and old circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108085508A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111644443A (en) * | 2019-12-31 | 2020-09-11 | 余霞 | Method for comprehensively recycling waste circuit boards |
-
2016
- 2016-11-22 CN CN201611031443.2A patent/CN108085508A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111644443A (en) * | 2019-12-31 | 2020-09-11 | 余霞 | Method for comprehensively recycling waste circuit boards |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180529 |
|
| WD01 | Invention patent application deemed withdrawn after publication |