CN107287424B - A method of the physical separation aluminum metal from metal mixture - Google Patents
A method of the physical separation aluminum metal from metal mixture Download PDFInfo
- Publication number
- CN107287424B CN107287424B CN201610219109.3A CN201610219109A CN107287424B CN 107287424 B CN107287424 B CN 107287424B CN 201610219109 A CN201610219109 A CN 201610219109A CN 107287424 B CN107287424 B CN 107287424B
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- metal
- aluminum metal
- aluminum
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- liquid
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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
- C22B7/005—Separation by a physical processing technique only, e.g. by mechanical breaking
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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
- C22B21/00—Obtaining aluminium
- C22B21/0038—Obtaining aluminium by other processes
- C22B21/0069—Obtaining aluminium by other processes from scrap, skimmings or any secondary source aluminium, e.g. recovery of alloy constituents
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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)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The method for physical separation aluminum metal that the invention discloses a kind of from metal mixture at least contains aluminum metal in the metal mixture, and the aluminum metal is pure aluminum or/and aluminium alloy；Described method includes following steps: metal mixture is mixed with the material that specific gravity is less than aluminum metal first, is then placed in liquid, aluminum metal is enable to float on the surface of liquid, and remaining metal is sunk in liquid, to realize the separation of aluminum metal.The present invention can carry out high-purity safe retrieving to the aluminum metal in metal mixture, and not have disposal of pollutants in entire removal process, and not only resource utilization utilization rate is high, but also environment friendly and pollution-free.
Description
Technology neck
The present invention is to be related to a kind of method of physical separation aluminum metal from metal mixture, belongs to metal recovery technology neck
Domain.
Background technique
Now with the continuous improvement of living standards of the people, the amount of waste metal is also increasing, as in waste household appliances
A large amount of old circuit board can be generated in dismantling.Old circuit board is first crushed using the method for physical crushing now, so
Resin-oatmeal therein is separated with other metals by selection by winnowing afterwards, then with the method for magnetic separation by iron and nickel and other non-ferrous metals into
Row separation, has obtained non-ferrous metal particle mixture.But contain a large amount of aluminum metal inside non-ferrous metal particle mixture, due to
The chemical property of aluminum metal is more active than non-ferrous metals other in non-ferrous metal particle mixture, and the recycling of non-ferrous metal is caused to increase
Difficulty and improve cost.Currently used is chemically treated method, such as: it is impregnated, is made wherein using acid or alkali
Aluminum metal occur chemical reaction generate aluminium salt, be then filtered to remove.This technique not only will increase cost recovery, while also will
Valuable aluminium alloy resource becomes the low aluminium salt of economic value, and in addition soda acid processing also produces waste water handling problem, brings
Environmental pollution.Therefore, it is badly in need of a kind of easy to operate, low in cost, free of contamination physical separation from metal mixture now
The method of aluminum metal.
Summary of the invention
In view of the above-mentioned problems existing in the prior art and demand, the object of the present invention is to provide a kind of easy to operate, costs
The method of cheap, the free of contamination physical separation aluminum metal from metal mixture.
To achieve the above object, the present invention adopts the following technical scheme:
A method of the physical separation aluminum metal from metal mixture at least contains aluminium gold in the metal mixture
Belong to, the aluminum metal is pure aluminum or/and aluminium alloy；Described method includes following steps: first that metal mixture is small with specific gravity
It is mixed in the material of aluminum metal, is then placed in liquid, aluminum metal is enable to float on the surface of liquid, and remaining metal is sunk to
In liquid, to realize the separation of aluminum metal.
Although aluminum metal belongs to light-weight metal in non-ferrous metal, specific gravity is still bigger than general solution, first by metal
Mixture is mixed with the material that specific gravity is less than aluminum metal, after light material is stained on the surface of aluminum metal, its mean specific gravity is made to be less than aluminium
Metal is then placed in liquid, and aluminum metal is enable to float on the surface of liquid, and remaining metal is sunk in liquid, so as to
Realize the separation of aluminum metal.
Preferably, the liquid is lithium bromide water solution.The ratio of the aqueous solution of lithium bromide especially saturated solution
Although weight is slightly less than aluminum metal, will making that treated after light material is stained on the surface of aluminum metal, aluminum metal floats on solution
Surface.
As further preferred scheme, the liquid is the stannous chloride of molten condition.The specific gravity of stannous chloride is 2.71,
It is close with aluminum metal, but will make after light material is stained on the surface of aluminum metal that treated aluminum metal floats on solution surface.
Especially when light material is grease type, it can prevent metal mixture from chemically reacting with stannous chloride.Also, chlorination
The fusing point of stannous is very low, and only 40 degree or so, heating expense is low.
Preferably, it is oil substances that the specific gravity, which is less than the material of aluminum metal,.Because of the specific gravity of oil substances
It is small, generally less than water, and it is easy to be stained with aluminum metal, and recycling easy to clean.
Preferably, it is gelatin substance that the specific gravity, which is less than the material of aluminum metal,.Because the cementability of gelatin substance is strong,
It is easy to be stained on together with aluminum metal.
As further preferred scheme, the gelatin substance is hydrophobicity gelatin substance.Because using hydrophobicity gelatin substance,
It is not easy to mix with solution, can be easily separated.
Preferably, when the specific gravity be less than aluminum metal material be water-soluble substances when, metal mixture with
After the material mixing, drying and processing is first carried out, is then placed in liquid.Since the operating time using specific gravity separation is short,
Water-soluble substances can also be used, water-soluble substances are mixed with solution in separation in order to prevent, are dissolved in the solution, so first
Drying and processing is carried out, to extend dissolution time in the solution, to guarantee just to have completed also failing to dissolve in the solution
Separation.
Preferably, comminution pretreatment is first carried out to the metal mixture.Because when the size of aluminum metal is larger,
Even if light material has been stained on surface, solution is still greater than in specific gravity, and aluminum metal can not float in the solution.Therefore, first to gold
Belong to mixture and carry out comminution pretreatment, the size of aluminum metal is reduced, to increase buoyancy.
Preferably, the aluminum metal separated is cleaned, cleaned isolated specific gravity is less than aluminium gold
The material of category is recycled.Because the aluminium gold metal surface separated can be stained with light material, such as: grease, to what is separated
Aluminum metal is cleaned, then the grease cleaned out is recycled, and can reduce production cost.
Compared with prior art, the invention has the following beneficial effects:
1) safety: since entire separation process is carried out in room temperature or close in room temperature, securely and reliably；
2) environmentally friendly: due to there is no disposal of pollutants in entire removal process, not can cause environmental pollution；
3) recycling degree is high: high-purity recycling can be carried out to the aluminum metal in metal mixture, resource utilization utilizes
Rate is high.
Detailed description of the invention
Fig. 1 is a kind of process flow chart of the method for physical separation aluminum metal from metal mixture that embodiment 1 provides.
Specific embodiment
Technical solution of the present invention is further elaborated below with reference to embodiment and attached drawing:
Embodiment 1
Referring to Fig.1, the technique stream of the method for a kind of physical separation aluminum metal from metal mixture provided in this embodiment
Journey is as follows:
Firstly, the metal mixture containing aluminum metal is mixed with light material, pass through the mixing with light material
To reduce the table specific gravity of aluminum metal, gravity separation is then carried out；Light material selects grease type herein, and gravity separation selects bromination
Lithium saturated solution, because the specific gravity of lithium-bromide solution is greater than aluminum metal and the mixed mean specific gravity of light material, aluminium gold
Belong to and light material floats in lithium bromide saturated solution, and remaining metal then sinks, so as to make aluminum metal and light material
It is separated with remaining metal；Aluminum metal and light material are cleaned again, to respectively obtain aluminum metal and remaining metal；To clear
Cleaning solution after washing is recycled.
Be it is necessary to described herein finally: above embodiments are served only for making technical solution of the present invention further detailed
Ground explanation, should not be understood as limiting the scope of the invention, those skilled in the art's above content according to the present invention
The some nonessential modifications and adaptations made all belong to the scope of protection of the present invention.
Claims (5)
1. a kind of method of the physical separation aluminum metal from metal mixture, at least contain aluminum metal in the metal mixture,
The aluminum metal is pure aluminum or/and aluminium alloy；It is characterized in that described method includes following steps: first by metal mixture with
The material that specific gravity is less than aluminum metal mixes, and is then placed in liquid, and aluminum metal is enable to float on the surface of liquid, and remaining metal
It sinks in liquid, to realize the separation of aluminum metal；The material that the specific gravity is less than aluminum metal is oil substances or glue class
Substance, the liquid are the stannous chloride of lithium bromide water solution or molten condition.
2. according to the method described in claim 1, it is characterized in that: the gelatin substance is hydrophobicity gelatin substance.
3. according to the method described in claim 1, it is characterized in that: when the material that the specific gravity is less than aluminum metal is water-soluble substances
When, after metal mixture is mixed with the material, drying and processing is first carried out, is then placed in liquid.
4. method according to claim 1 or 3, it is characterized in that: first carrying out comminution pretreatment to the metal mixture.
5. according to the method described in claim 1, it is characterized in that: being cleaned to the aluminum metal separated, cleaned separation
The material that obtained specific gravity is less than aluminum metal is recycled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610219109.3A CN107287424B (en) | 2016-04-11 | 2016-04-11 | A method of the physical separation aluminum metal from metal mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610219109.3A CN107287424B (en) | 2016-04-11 | 2016-04-11 | A method of the physical separation aluminum metal from metal mixture |
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| CN107287424A CN107287424A (en) | 2017-10-24 |
| CN107287424B true CN107287424B (en) | 2019-01-25 |
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| CN201610219109.3A Active CN107287424B (en) | 2016-04-11 | 2016-04-11 | A method of the physical separation aluminum metal from metal mixture |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110277601A (en) * | 2018-03-16 | 2019-09-24 | 上海奇谋能源技术开发有限公司 | A kind of physical method separating lithium ion battery positive and negative electrode |
| CN110270431A (en) * | 2018-03-16 | 2019-09-24 | 上海奇谋能源技术开发有限公司 | A method of the physical separation light metal from metal mixture |
| CN113618964A (en) * | 2020-12-31 | 2021-11-09 | 广东金天环保有限公司 | Process method for separating plastic from metal mixture |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071353A (en) * | 1991-10-10 | 1993-04-28 | 峰安金属工业股份有限公司 | By the method for separating of selecting special metal in the old metal material |
| CN105457741A (en) * | 2014-10-06 | 2016-04-06 | 上海奇谋能源技术开发有限公司 | Method for separating aluminum alloy out of non-ferrous metal particle mixture |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4376178B2 (en) * | 2004-12-27 | 2009-12-02 | 日本磁力選鉱株式会社 | Shredder dust treatment method and equipment |
-
2016
- 2016-04-11 CN CN201610219109.3A patent/CN107287424B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071353A (en) * | 1991-10-10 | 1993-04-28 | 峰安金属工业股份有限公司 | By the method for separating of selecting special metal in the old metal material |
| CN105457741A (en) * | 2014-10-06 | 2016-04-06 | 上海奇谋能源技术开发有限公司 | Method for separating aluminum alloy out of non-ferrous metal particle mixture |
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| CN107287424A (en) | 2017-10-24 |
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