CN109971957A - A kind of copper scrap recovery process - Google Patents
A kind of copper scrap recovery process Download PDFInfo
- Publication number
- CN109971957A CN109971957A CN201711443459.9A CN201711443459A CN109971957A CN 109971957 A CN109971957 A CN 109971957A CN 201711443459 A CN201711443459 A CN 201711443459A CN 109971957 A CN109971957 A CN 109971957A
- Authority
- CN
- China
- Prior art keywords
- copper
- copper scrap
- scrap
- recovery process
- impurities
- 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.)
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Classifications
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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
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0056—Scrap treating
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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
- C22B7/001—Dry processes
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/12—Electrolytic production, recovery or refining of metals by electrolysis of solutions of copper
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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)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention discloses a kind of recycling refining techniques of metal, specifically a kind of copper scrap recovery process, its technical solution is: first, the copper scrap of recycling is pre-processed, oxide, dirt and the organic compound for removing copper scrap product surface pre-process before carrying out melting to copper scrap, remove dirt, sump oil and the organic compound of copper scrap product surface；Second, high melt manufactures anode copper.Anode copper is precipitated in cathode plate by the means of electrolysis, obtains fine copper by third, electrorefining.This method perfect technology, recovering effect are good.
Description
Technical field
The present invention relates to a kind of metal smelt technical field, specially a kind of copper scrap recovery process.
Background technique
With national economy fast development, on the one hand, copper consumption figure rapid growth copper valence soars, and China's copper resource is tight
It lacks, output of copper concentrate is difficult to meet demand；On the other hand, waste household appliances, waste and old cable also increase rapidly, and cause ring in recent years
Border pollution.So being China's Copper Processing Industry shortcut that make up that there is lack of raw materials fast-developing to the recycling of copper scap.
It tends to generate more copper scrap in daily life and industry manufacture, such as: in discarded red metal silk, socket
Bronze copper-nickel alloy on brass, doorframe etc., ingredient is complex, except containing in addition to a large amount of metallic copper, also containing a certain amount of iron,
The impurity such as aluminium, sand, greasy dirt.Since this copper scrap deals with relatively difficult, most of at present is all to carry out such copper scrap
It is taken out after plain mode processing, can not only cause certain pollution to environment in this way, but also make the comprehensive utilization ratio of resource in copper scrap
It is not high, cause the valuable constituents such as metallic copper to be lost in vain.For the valuable metal of recycling copper scrap bits, previous Zeng You producer, which takes, to be removed
It is sold outside after the technical matters such as iron, calcining processing copper scrap bits as raw material, it is seriously polluted although simple process, money cannot be reached
The purpose of source comprehensive reutilization, and since copper scrap product surface is there are more greasy dirt and organic compound, lead to copper scrap
A large amount of pernicious gas is generated when melting, endangers workers ' health and pollutes environment.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of copper scrap recovery process.
To achieve the above object, the present invention provides the following technical scheme that a kind of copper scrap recovery process, copper scrap pre-process work
Steps are as follows for skill:
1. sorting: copper scrap is selected according to finished product to be prepared, it will be clean, not tin plating, without cladding and no-alloyed
Copper wire individually sorts out；
2. heating: carrying out the heat treatment of high temperature surface to the waste cupron sorted out.
Specific embodiment
Copper scrap recovery process of the present invention is described further below.
A kind of copper scrap recovery process, copper scrap pre-treatment process steps are as follows:
1. sorting: copper scrap is selected according to finished product to be prepared, it will be clean, not tin plating, without cladding and no-alloyed
Copper wire individually sorts out；
2. heating: carrying out the heat treatment of high temperature surface to the waste cupron sorted out；
3. cleaning: being cleaned with giant；
4. alkali cleaning: cleaned waste cupron, which is put into the lye of 2% concentration, to be impregnated, and the lye includes caustic soda and cleaning agent；
5. drying melting: the waste cupron after alkali cleaning being dried, waste cupron is put into preheated smelting furnace and carries out melting；
6. removing impurities by oxidation: blasting air, using the oxygen in air by oxidation of impurities in copper liquid, precipitate.
Further, using electrorefining, refinery practice step are as follows:
1. reduction: carrying out reduction refinement to the copper oxide in copper liquid；
2. removal of impurities: removing the solidity impurity in copper liquid；
3. cast panel: plate is made in the cooling casting of copper liquid, as electrolytic anode plate；
4. refining: cathode plate made of anode plate and fine copper being inserted into the mixed solution of copper sulphate and sulfuric acid together and be electrolysed
Refining, anode plate copper ion electrolysis, is precipitated on cathode plate, obtains high-purity copper.
Selection is carried out to copper scrap, selects copper scrap according to finished product to be prepared, it will be clean, not tin plating, without cladding
It is individually sorted out with the copper wire of no-alloyed, subsequent technique is facilitated to clean and locate the greasy dirt impurity etc. of its inner surface
Reason, while smelting time of the copper scrap in induction furnace can be accelerated.
Heating, can preheat waste cupron, further speed up smelting time；
Cleaning directly carries out hydro-peening to copper scrap using giant, removes the ashes for failing completely burned, be allowed to be detached from copper scrap table
The pollution to lye is reduced in face；Along with high temperature bath quenching is taken advantage of, since the obstinate coating that do not burn up is heated in the effect of expanding with heat and contract with cold
Equal natures, which fall off, to be rinsed, this flushing water belongs to circulating and recovering not outlet, and the sludge to precipitate is given qualified
Company's recovery processing, is effectively reduced disposal of pollutants, environmentally protective.
Waste material is placed in reacting furnace and heats fusing by melting.
Removal of impurities, blasts air, generates the impurity in copper liquid and aoxidizes and be precipitated, impurity is pulled out, reduces impurity in copper liquid
Content, to reach the degree of purity requirement of pure copper and copper alloy.
Anode plate made of copper liquid is inserted into the mixed electrolytic solution of copper sulphate and sulfuric acid, fetches fine copper plate and most use cathode
Plate, energization makes blister copper anode plate electrorefining, after energization, the blister copper of anode plate from anodic solution at copper ion to movable cathode,
It obtains electronics after reaching cathode and fine copper is precipitated in cathode, obtain the fine copper product of higher purity.Compared to pyro-refining, electrolysis essence
Obtained fine copper purity is refined up to 99.97%, it is standby to be suitable for pure copper.
The above makes the preferred embodiment of the present invention, does not depart from this hair for those of ordinary skill in the art
Under the premise of bright principle, several variations and modifications can also be made, these also should be regarded as protection scope of the present invention.
Claims (2)
1. a kind of copper scrap recovery process, it is characterized in that: copper scrap pre-treatment process steps are as follows:
1. sorting: copper scrap is selected according to finished product to be prepared, it will be clean, not tin plating, without cladding and no-alloyed
Copper wire individually sorts out；
2. heating: carrying out the heat treatment of high temperature surface to the waste cupron sorted out；
3. cleaning: being cleaned with giant；
4. alkali cleaning: cleaned waste cupron, which is put into the lye of 2% concentration, to be impregnated, and the lye includes caustic soda and cleaning agent；
5. drying melting: the waste cupron after alkali cleaning being dried, waste cupron is put into preheated smelting furnace and carries out melting；
6. removing impurities by oxidation: blasting air, using the oxygen in air by oxidation of impurities in copper liquid, precipitate.
2. copper scrap recovery process according to claim 1, it is characterized in that: using electrorefining, refinery practice step are as follows:
1. reduction: carrying out reduction refinement to the copper oxide in copper liquid；
2. removal of impurities: removing the solidity impurity in copper liquid；
3. cast panel: plate is made in the cooling casting of copper liquid, as electrolytic anode plate；
4. refining: cathode plate made of anode plate and fine copper being inserted into the mixed solution of copper sulphate and sulfuric acid together and be electrolysed
Refining, anode plate copper ion electrolysis, is precipitated on cathode plate, obtains high-purity copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711443459.9A CN109971957A (en) | 2017-12-27 | 2017-12-27 | A kind of copper scrap recovery process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711443459.9A CN109971957A (en) | 2017-12-27 | 2017-12-27 | A kind of copper scrap recovery process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109971957A true CN109971957A (en) | 2019-07-05 |
Family
ID=67071523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711443459.9A Pending CN109971957A (en) | 2017-12-27 | 2017-12-27 | A kind of copper scrap recovery process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109971957A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111017984A (en) * | 2019-12-12 | 2020-04-17 | 昆山市千灯三废净化有限公司 | Production process of high-purity copper oxide |
| CN111455196A (en) * | 2020-03-09 | 2020-07-28 | 福建省长乐市华拓五金有限公司 | Treatment method for chromium bronze scrap regeneration |
| CN112111648A (en) * | 2020-09-10 | 2020-12-22 | 慈溪市金威铜业有限公司 | Processing technology for producing tinned copper wire by using waste copper wire and soaking and cleaning device |
| CN112251616A (en) * | 2020-10-23 | 2021-01-22 | 江西金叶大铜科技有限公司 | Process method for producing red copper pipe by refining, continuous casting, continuous rolling and stretching waste copper |
| CN113999973A (en) * | 2021-10-13 | 2022-02-01 | 绍兴诚杰金属材料有限公司 | Metal powder smelting preparation process |
-
2017
- 2017-12-27 CN CN201711443459.9A patent/CN109971957A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111017984A (en) * | 2019-12-12 | 2020-04-17 | 昆山市千灯三废净化有限公司 | Production process of high-purity copper oxide |
| CN111455196A (en) * | 2020-03-09 | 2020-07-28 | 福建省长乐市华拓五金有限公司 | Treatment method for chromium bronze scrap regeneration |
| CN112111648A (en) * | 2020-09-10 | 2020-12-22 | 慈溪市金威铜业有限公司 | Processing technology for producing tinned copper wire by using waste copper wire and soaking and cleaning device |
| CN112111648B (en) * | 2020-09-10 | 2022-04-26 | 慈溪市金威铜业有限公司 | Processing technology for producing tinned copper wire by using waste copper wire and soaking and cleaning device |
| CN112251616A (en) * | 2020-10-23 | 2021-01-22 | 江西金叶大铜科技有限公司 | Process method for producing red copper pipe by refining, continuous casting, continuous rolling and stretching waste copper |
| CN113999973A (en) * | 2021-10-13 | 2022-02-01 | 绍兴诚杰金属材料有限公司 | Metal powder smelting preparation process |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190705 |