CN109876919A - A method of separated from electron wastes using Low Temperature Heat Treatment shaping metal with it is nonmetallic - Google Patents
A method of separated from electron wastes using Low Temperature Heat Treatment shaping metal with it is nonmetallic Download PDFInfo
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Abstract
Metal and nonmetallic method are separated from electron wastes using Low Temperature Heat Treatment shaping the present invention relates to a kind of, the method are as follows: be crushed electron wastes, then Low Temperature Heat Treatment shaping is carried out, obtain the material of shape remodeling, after resulting material is sorted, metal and nonmetallic separation are realized.The present invention is mutually easily deformed under the conditions of heating and/or mechanical force using organic matter and metal has the characteristics that ductility, by the way that electron wastes material is collided and is rubbed in the environment of low-temperature heat, it is restructured as the shape of plastics and metal respectively spherical, is conducive to subsequent sorting operation.This method mild condition, generation environment does not pollute, and the grade of plastics reaches 90% or more after sorting, and metal content reaches 95% or more, increases the comprehensive utilization value of electron wastes, with good economic efficiency and application prospect.
Description
Technical field
The present invention relates to electron wastes resources circulations to recycle field, and in particular to a kind of to utilize Low Temperature Heat Treatment shaping
Metal and nonmetallic method are separated from electron wastes.
Background technique
Electron wastes refer to that people eliminate or lose in daily life the household electrical appliance and electronic product of function, packet
Include washing machine, refrigerator, television set, air-conditioning, radio, recorder, LED lamp, mobile phone, computer etc..With social economy
Development is constantly progressive with science and technology, and the speed that electronic product updates is accelerated, and forms a large amount of electron wastes.Currently,
Electron wastes are fastest-rising solid waste in the world, are produced in 2017, in world wide more than 40,000,000 tons
Electronic waste.Electron wastes have resource and environment double grading, need to attract people's attention.On the one hand, electronics is useless
Containing the heavy metal and other toxic organics that much constitute a serious threat to environment and human health in gurry, as lead,
Arsenic, mercury, Polychlorinated biphenyls etc.；On the other hand, expensive containing numerous valuable metals, including gold, silver, platinum, rhodium, palladium etc. in electron wastes
The rare earth metals such as metal, the dissipated metals such as gallium, indium and yttrium (Y), cerium (Ce), gadolinium (Gd).
Therefore, the resource utilization of electron wastes is using can not only eliminate electron wastes to environment and the mankind
Seriously endanger, and wherein a large amount of valuable metal can be recycled, make up shortage of resources, and economic well-being of workers and staff can be obtained, at
For the emphasis of whole world research.The key that recycling of WEEE utilizes is to separate plastics and metal, method master common at present
There are mechanical separation and pyrolysis separation etc..Mechanical separation is that electronic product is ground into particle using mechanical equipment,
The difference for recycling physical property (such as density, magnetism, electric conductivity) between each component, so that metal and nonmetallic separation.Machine
Tool physical method is although environmentally friendly, energy saving, easy to operate, but traditional mechanically decoupled hair can not thoroughly separate modeling
Material and metal, easily cause the loss of valuable material.Being pyrolyzed rule is heated by using high temperature on electronic waste, will be had
Machine ingredient is peeled away, and metal is then melted into alloy, then is subject to subsequent wet process or pyrometallurgy and is carried out at recycling to metal
Reason.But non-metallic material can decompose generation toxic and harmful gas at high temperature in pyrolytic process, generate to environment, and high temperature meeting
Cause a large amount of energy consumption.
From the foregoing, it will be observed that existing mechanical separation and pyrolysis partition method have the defects that certain, therefore, one kind is developed
It is energy-efficient, environmentally protective and can be realized metal and the nonmetallic method efficiently separated in electron wastes, become ability
The emphasis of field technique personnel research.
Summary of the invention
In view of problems of the prior art, utilize Low Temperature Heat Treatment shaping from electronic waste the present invention provides a kind of
Metal and nonmetallic method are separated in object, realize to metal in electron wastes and it is nonmetallic efficiently separate, and condition
Mildly, environmental-friendly, it is suitable for industrial application.
To achieve this purpose, the present invention adopts the following technical scheme:
Metal and nonmetallic side are separated from electron wastes using Low Temperature Heat Treatment shaping the present invention provides a kind of
Method the described method comprises the following steps:
(1) electron wastes are crushed；
(2) the broken electron wastes of step (1) are subjected to Low Temperature Heat Treatment shaping, obtain the material of shape remodeling；
(3) step (2) resulting material is sorted, realizes metal and nonmetallic separation.
The present invention make full use of organic matter phase (such as plastics etc.) be easily deformed during heating and metal have prolong
The characteristics of malleability, makes electron wastes by the way that electron wastes material is collided and rubbed in the environment of low-temperature heat
The shape of middle plastics and metal be restructured as respectively it is spherical, and then reduce sheet material influenced by air-flow, promoted the efficiency of separation.
Meanwhile the present invention separates metal in electron wastes with nonmetallic using dry method mode, solves traditional cracking and sorting side
Metal and the problem that the nonmetallic efficiency of separation is low, product grade is low in method can be realized the high-valued of material in electron wastes
It uses, and this method mild condition, easy to operate, environmentally friendly, metal and nonmetallic separative efficiency are high, and suitable industrialization pushes away
Wide application.
In fact, method provided by the invention is not only applicable to metal and nonmetallic separation, for part metals and
For the electron wastes that metal (physicochemical characteristic such as fusing point/ductility difference is larger) combines, pass through effective control to temperature
System (the close wherein lower melting-point metal of temperature), cooperative mechanical power equally can be realized and efficiently separate to metal and metal.
Similarly, above-mentioned separation principle is equally applicable to the separation between nonmetallic.
Electron wastes described in step (1) of the present invention include eliminating and losing the refrigerator, washing machine, receipts using function
Household electrical appliance and the electronic products such as the mechanical, electrical brain of the mechanical, electrical view of sound, mobile phone, air-conditioning, LED lamp or battery.But it is non-to be only limitted to this,
All common electron wastes are suitable for the present invention.
When in electron wastes to be processed containing the functional electronic component that do not lose, the present invention is in step (1) to electricity
Sub- waste carries out before being crushed, and can choose and disassembles to electron wastes, the electronic component that function is not lost is directly returned
It receives and utilizes, then remaining waste is crushed.
At least one of the mode of above-mentioned dismantling of the invention is disassembled for artificial dismantling, mechanization or semi-automation is disassembled,
Specific dismantling mode should be depending on discarded species.
Described be crushed of step (1) of the present invention carries out in crusher, and the crusher is shearing broken, jaw crushing
At least one of machine, cone crusher, kibbler roll or impact crusher.The power of crusher is 2.2- when broken
13kw, for example, can be 2.2kw, 3kw, 5kw, 8kw, 10kw, 11kw or 13kw etc. and above-mentioned numberical range in it is specific
Value.
The partial size of step (1) the of the present invention broken rear material is 0.1-10cm, preferably 0.5-5cm, such as be can be
Specific point value in 0.1cm, 0.3cm, 0.5cm, 0.8cm, 1cm, 3cm, 5cm, 8cm or 10cm etc. and above-mentioned numberical range.
The partial size of the power of above-mentioned crusher and broken rear material is that the present invention illustratively enumerates, not to the present invention
It is limited.For the present invention, the partial size of the specific operating power of crusher and resulting material can be according in treatment process
Actual conditions be specifically chosen, the present invention does not do particular determination to it.
Equipment used in step (2) the Low Temperature Heat Treatment shaping is improved with temperature control heating function in the present invention
At least one of ball mill, rod mill, column mill, tube mill or the autogenous tumbling mill of energy.
Low Temperature Heat Treatment shaping technique described in step (2) of the present invention be simultaneously progress heat treatment and mechanical treatment.
Wherein mechanical force processing realizes that the revolving speed of equipment is 300-1500r/min, preferably 500- in treatment process by above-mentioned grinding machine
1500r/min, such as can be 300r/min, 500r/min, 800r/min, 1000r/min, 1200r/min or 1500r/min
Deng and above-mentioned numerical value between specific point value.
The temperature of step (2) the Low Temperature Heat Treatment shaping of the present invention be 50-300 DEG C, preferably 150-250 DEG C, such as
It can be 150 DEG C, 180 DEG C, 200 DEG C, 230 DEG C, 250 DEG C, 280 DEG C or 300 DEG C etc. and above-mentioned numerical value be directly specific
Value.
In Low Temperature Heat Treatment reforming process of the present invention, treatment temperature should be lower than the fusing point of material (nonmetallic), otherwise
It will cause fusing bonding, cannot achieve the morphology control to material.But opposite, treatment temperature cannot be too low, otherwise will increase
The difficulty of material remodeling, while the loss of mechanical energy is increased, it is unfavorable for controlling cost.
The time of step (2) the Low Temperature Heat Treatment shaping of the present invention is 0.5-15h, preferably 3-12h, such as be can be
Specific point value between 0.5h, 1h, 3h, 5h, 8h, 10h, 12h or 15h etc. and above-mentioned numerical value.
The material obtained after step (2) the Low Temperature Heat Treatment shaping of the present invention is conducive to subsequent sorting in spherical
Operation.
The mode of step (3) the of the present invention sorting is pulse selection by winnowing, fluidized bed air separating, jigging, electrostatic separation or rubs
Wipe at least one of electric separation, but it is non-be only limitted to this, other suitably sort mode and are equally applicable to the present invention.
Preferably, the pulse frequency of the pulse selection by winnowing be 0.5-3Hz, such as can be 0.5Hz, 1Hz, 1.5Hz, 2Hz,
2.5Hz or 3Hz etc.；Wind-force is 50-200kPa, for example, can be 50kPa, 80kPa, 100kPa, 130kPa, 150kPa,
180kPa or 200kPa etc..
Preferably, the medium of the fluidized bed air separating is magnetic iron powder, vibration frequency 5-20Hz, for example, can be 5Hz,
8Hz, 10Hz, 13Hz, 15Hz, 18Hz or 20Hz etc..
Preferably, the voltage of the electrostatic separation and friction electrical selection be 30-80kV, such as can be 30kV, 40kV,
50kV, 60kV, 70kV or 80kV etc.；Charging rate is 0.1-10kg/min, for example, can be 0.1kg/min, 0.5kg/min,
1kg/min, 3kg/min, 5kg/min, 8kg/min or 10kg/min etc..
Compared with prior art, the present invention is at least had the advantages that
(1) in the present invention, by broken electron wastes material in the environment of low-temperature bake, by colliding and rubbing
It wipes, shape is reformatted into spherical, and reduce sheet material is influenced by air-flow, is conducive to subsequent sorting and is operated, greatlys improve
The separative efficiency of metal and plastics.So that the grade of plastics reaches 90% or more after sorting, metal content reaches 95% or more,
Increase the comprehensive utilization value of electron wastes.
(2) method mild condition provided by the invention, easy to operate, process green non-pollution are suitble to industrial applications.
Detailed description of the invention
Fig. 1 is the process flow chart that a kind of specific embodiment of the present invention provides.
The present invention is described in more detail below.But following examples is only simple example of the invention, not generation
Table or limitation the scope of the present invention, protection scope of the present invention are subject to claims.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
The present invention specific embodiment part provide it is a kind of using Low Temperature Heat Treatment shaping from electron wastes point
From metal and nonmetallic method, as shown in Figure 1, the method can be with are as follows: by electron wastes by dismantling and Function Identification
Fully functional part directly recycles afterwards, and the part lost to function is crushed；Then broken material is carried out
Low Temperature Heat Treatment Shape correction obtains the material of shape remodeling；After treatment sorts the spherical material of gained, realizes
The separation of metal and nonmetallic (plastics).
Typical but non-limiting embodiment of the invention is as follows:
Embodiment 1
A kind of separation metal and nonmetallic method from waste and old LED lamp are present embodiments provided, the specific steps are that:
(1) LED lamp for losing function is crushed to partial size using the shear crusher that power is 5kw is 2-4cm；
(2) broken material being placed in the improved rod mill with temperature controlling function, setting temperature is 210 DEG C,
Revolving speed is 1000r/min, handles 10h, and after treatment obtains spherical material；
(3) material after shaping is sorted using pulse pneumatic concentration, frequency 1.5Hz, wind-force 100kPa, from wind
Optional equipment top discharge mouth obtains plastic product, and grade 92.28% obtains metal mixture from pneumatic separator lower discharge port,
Its grade is 97.36%.
Embodiment 2
It present embodiments provides and separates metal and nonmetallic side in a kind of mixed material from discarded LED lamp
Method, the specific steps are that:
(1) mixed material of discarded LED lamp is crushed to partial size using the jaw crusher that power is 10kw is
0.5-2cm；
(2) broken material is handled using the ball mill after transformation with heating function, setting temperature is 220
DEG C, revolving speed 1000r/min, the processing time is 10h；
(3) material after shaping being sorted using electrostatic sorting method, control voltage is 40kV, after sorting,
The grade of obtained plastic hybrid is 92.85%, and the grade of obtained metal mixture is 95.78%.
Embodiment 3
A kind of separation metal and nonmetallic method from waste and old laptop are present embodiments provided, as shown in Figure 1,
The specific steps are that:
(1) waste and old laptop is disassembled manually, electronic component therein is detected, and detects qualified electronics member
Part, direct reuse；
(2) remaining waste after step (1) recycling is crushed to partial size using the shear crusher that power is 2.2kw
For 6-8cm；
(3) broken material is added in the improved rod mill with temperature controlling function, setting maturing temperature is 150
DEG C, revolving speed 1200r/min, the processing time is 12h；
(4) material after shaping is sorted using pulse pneumatic concentration, frequency 1.5Hz, wind-force 150kPa, from wind
Optional equipment top discharge mouth obtains plastic product, and grade 91.67% obtains metal mixture from pneumatic separator lower discharge port,
Its grade is 95.23%.
Embodiment 4
Present embodiments provide a kind of separation metal and nonmetallic method, specific steps from waste and old laptop
Include:
(1) waste and old laptop is disassembled manually, is tested to electronic component therein, and qualified electronics member is detected
Part, direct reuse；
(2) remaining waste after step (1) recycling is crushed to partial size using the jaw crusher that power is 8kw is
0.5-2cm；
(3) broken material is handled using the ball mill after transformation with heating function, setting temperature is 280
DEG C, revolving speed 500r/min, the processing time is 10h；
(4) material after shaping is sorted using electrostatic separation method, control voltage is 50kV, after sorting, is obtained
The grade of the plastic hybrid arrived is 92.89%, and obtained metal mixture grade is 96.12%.
Embodiment 5
Present embodiments provide a kind of separation metal and nonmetallic method, specific steps from superseded domestic air conditioning
Are as follows:
(1) domestic air conditioning that dismantling is eliminated by hand, tests to electronic component therein, examines qualified electronic component
Direct reuse；
(2) step (1) remaining waste after the recovery is crushed to partial size using the impact crusher that power is 7.5kw
For 1-4cm；
(3) broken material is put into the improved rod mill with temperature controlling function, setting maturing temperature is 80
DEG C, revolving speed 1500r/min, the processing time is 15h；
(4) it is sorted using material of the pulse pneumatic separator to shaping, frequency 1.5Hz, wind-force 150kPa, from wind
The top discharge mouth of optional equipment obtains plastic product, and grade 93.12% obtains metal mixed from the lower discharge port of pneumatic separator
Object, grade 97.78%.
Embodiment 6
Present embodiments provide a kind of separation metal and nonmetallic method, specific steps from superseded domestic air conditioning
Are as follows:
(1) superseded domestic air conditioning is disassembled using mechanization, is tested to electronic component therein, and qualified electricity is examined
Subcomponent direct reuse；
(2) remaining waste after step (1) recycling is crushed to partial size using the impact crusher that power is 11kw
For 0.5-2cm；
(3) broken material is put into the improved rod mill with temperature controlling function, setting maturing temperature is 150
DEG C, revolving speed 1300r/min, the processing time is 14h；
(4) it is sorted using material of the pulse pneumatic separator to shaping, frequency 1.5Hz, wind-force 150kPa, from wind
The top discharge mouth of optional equipment obtains plastic product, and grade 94.02% obtains metal mixed from the lower discharge port of pneumatic separator
Object, grade 97.12%.
Embodiment 7
Present embodiments provide it is a kind of from discarded radio, recorder mixed material in separate metal and nonmetallic
Method, specific steps include:
(1) mixed material of discarded radio, recorder is crushed to partial size using the jaw crusher that power is 7kw
For 1-3cm；
(2) broken material is handled using the ball mill after transformation with heating function, setting temperature is 210
DEG C, revolving speed 800r/min, the processing time is 8h；
(3) material after shaping being sorted using electrostatic sorting method, control voltage is 70kV, after sorting,
The grade of obtained plastic hybrid is 94.51%, and the grade of obtained metal mixture is 97.32%.
Embodiment 8
Present embodiments provide it is a kind of from discarded radio, recorder mixed material in separate metal and nonmetallic
Method, specific steps include:
(1) mixed material of discarded radio, recorder is crushed to grain using the jaw crusher that power is 12kw
Diameter is 0.2-1.5cm；
(2) broken material is handled using the rod mill after transformation with heating function, setting temperature is 230
DEG C, revolving speed 1000r/min, the processing time is 11.5h；
(3) material after shaping being sorted using electrostatic sorting method, control voltage is 60kV, after sorting,
The grade of obtained plastic hybrid is 95.51%, and the grade of obtained metal mixture is 97.72%.
Embodiment 9
Present embodiments provide a kind of separation metal and nonmetallic method, specific steps packet from superseded mobile phone
It includes:
(1) the superseded mobile phone of dismantling examines qualified electronics member to electronic component therein progress functional check by hand
Part direct reuse；
(2) remaining waste after step (1) recycling is crushed to partial size using the kibbler roll that power is 7kw is 1-
3cm；
(3) broken material is handled using the tube mill after transformation with heating function, setting temperature is 200
DEG C, revolving speed 950r/min, the processing time is 6h；
(4) material is sorted using the mode of electrostatic separation, controls voltage 50kV, after sorting, obtained modeling
The grade for expecting mixture is 90.78%, and the grade of obtained metal mixture is 95.23%.
Embodiment 10
Present embodiments provide a kind of separation metal and nonmetallic method, specific steps packet from superseded mobile phone
It includes:
(1) the superseded mobile phone of dismantling examines qualified electronics member to electronic component therein progress functional check by hand
Part direct reuse；
(2) remaining waste after step (1) recycling is crushed to partial size using the kibbler roll that power is 13kw is
0.1-1cm；
(3) broken material is handled using the ball mill after transformation with heating function, setting temperature is 220
DEG C, revolving speed 1200r/min, the processing time is 3h；
(4) material is sorted using the mode of electrostatic separation, controls voltage 70kV, after sorting, obtained modeling
The grade for expecting mixture is 91.16%, and the grade of obtained metal mixture is 95.08%.
Embodiment 11
It present embodiments provides and a kind of separates metal and nonmetallic from the mixed material of discarded refrigerator and air-conditioning
Method, specific steps include:
(1) using artificial dismantling, the electronic component in refrigerator and air-conditioning is removed, carries out functional check, examines and closes
The electronic component direct reuse of lattice；
(2) the shearing examination crusher that remaining waste after step (1) recycling is 4kw using power is crushed to partial size is
4-6cm；
(3) broken material is handled using the improved rod mill with temperature controlling function, setting temperature is
180 DEG C, revolving speed 1100r/min, the processing time is 10h；
(4) material after shaping is sorted using the method for pulse selection by winnowing, frequency 1.5Hz, wind-force 150kPa,
Plastic hybrid is obtained from the top discharge mouth of pneumatic separator, grade 91.11% obtains metal from pneumatic separator lower discharge port
Mixture, grade 95.32%.
Embodiment 12
It present embodiments provides and a kind of separates metal and nonmetallic from the mixed material of discarded refrigerator and air-conditioning
Method, specific steps include:
(1) it is disassembled using mechanical intelligence, the electronic component in refrigerator and air-conditioning is removed, carry out functional check, inspection
Test qualified electronic component direct reuse；
(2) remaining waste after step (1) recycling is tried into crusher using the shearing that power is 10kw and is crushed to partial size
For 2-4cm；
(3) broken material is handled using the improved rod mill with temperature controlling function, setting temperature is
220 DEG C, revolving speed 850r/min, the processing time is 12h；
(4) material after shaping is sorted using the method for pulse selection by winnowing, frequency 1.5Hz, wind-force 200kPa,
Plastic hybrid is obtained from the top discharge mouth of pneumatic separator, grade 93.31% obtains gold from the lower discharge port of pneumatic separator
Belong to mixture, grade 96.22%.
Comparative example 1
This comparative example provide it is a kind of recycle metal and nonmetallic method from LED lamp using conventional method, tool
Body step includes:
(1) the shearing examination crusher that discarded LED lamp is 7kw using power is crushed to partial size is 1-3cm；
(2) broken material is sorted using pulsed winnowing machine, frequency 1.5Hz, wind-force 100kPa, from
The top discharge mouth of pneumatic separator obtains the mixture of plastics, and grade 60.21% obtains gold from the lower discharge port of pneumatic separator
Belong to mixture, grade 71.32%.
Comparative example 2
This comparative example provide it is a kind of using conventional method from discarded radio, recorder mixed material in separate gold
Belong to and nonmetallic method, specific steps include:
(1) mixed material of discarded radio, recorder is crushed to grain using the jaw crusher that power is 13kw
Diameter is 0.1-1cm；
(2) material after shaping being sorted using electrostatic sorting method, control voltage is 60kV, after sorting,
The grade of obtained plastic hybrid is 58.59%, and the grade of obtained metal mixture is 53.32%.
Comparative example 3
This comparative example provide it is a kind of metal and nonmetallic method are separated from superseded refrigerator using conventional method,
Its specific steps includes:
(1) artificial to disassemble the electronic component eliminated in refrigerator, functional check is carried out to electronic component, to fully functional
Electronic component direct reuse；
(2) remaining waste after step (1) recycling is crushed to partial size using the jaw crusher that power is 7kw is 1-
3cm；
(3) broken material is sorted using pulse selection by winnowing, frequency 1.5Hz, wind-force 150kPa, from selection by winnowing
The top discharge mouth of equipment obtains plastic hybrid, and grade 64.56% obtains metal mixed from the lower discharge port of pneumatic separator
Object, grade 59.23%.
Comparative example 4
This comparative example provide it is a kind of metal and nonmetallic method are separated from waste and old washing machine using conventional method,
The specific steps of which are as follows:
(1) using the electronic component in mechanization dismantling waste washing machine, functional check is carried out to electronic component, to function
Can completely electronic component direct reuse；
(2) remaining waste after step (1) recycling is crushed to partial size using the jaw crusher that power is 7kw is 1-
3cm；
(3) broken material is sorted using pulse selection by winnowing, frequency 1.5Hz, wind-force 150kPa, from selection by winnowing
The top discharge mouth of equipment obtains plastic hybrid, and grade 62.56% obtains metal mixed from the lower discharge port of pneumatic separator
Object, grade 64.23%.
Comparative example 5
Compared with Example 1, this comparative example is other than removing the heat treatment in step (2), other steps and condition with
Embodiment 1 is identical.That is, carrying out shaping to broken material with the revolving speed of 1000r/min using rod mill at normal temperature
Processing.
The results show that the grade of gained plastic hybrid is 80.41%, and the grade of metal mixture is after sorting
76.22%.
Comparative example 6
Compared with Example 1, this comparative example is other than removing the rod mill mechanical treatment in step (2), other steps and
Condition is identical with embodiment 1.That is, carrying out Shape correction to broken material under conditions of 210 DEG C (no mechanical force).
The results show that the grade of gained plastic hybrid is 70.70%, and the grade of metal mixture is after sorting
71.38%.
By the above embodiments and comparative example it is found that provided by the invention separate electronics using Low Temperature Heat Treatment shaping technique
Metal and nonmetallic method are easy to operate in waste, process green non-pollution, and largely improve electron wastes
Middle metal and nonmetallic separative efficiency respectively obtain the very high plastic hybrid of grade and metal mixture, improve electronics
The comprehensive utilization ratio of waste.
The Applicant declares that the present invention is explained by the above embodiments detailed construction feature of the invention, but the present invention is simultaneously
It is not limited to above-mentioned detailed construction feature, that is, does not mean that the present invention must rely on above-mentioned detailed construction feature and could implement.Institute
Belong to those skilled in the art it will be clearly understood that any improvement in the present invention, to the equivalence replacement of component selected by the present invention
And increase, selection of concrete mode of accessory etc., all of which fall within the scope of protection and disclosure of the present invention.
Claims (10)
1. a kind of separate metal and nonmetallic method using Low Temperature Heat Treatment shaping from electron wastes, which is characterized in that
It the described method comprises the following steps:
(1) electron wastes are crushed；
(2) the broken electron wastes of step (1) are subjected to Low Temperature Heat Treatment shaping, obtain the material of shape remodeling；
(3) step (2) resulting material is sorted, realizes metal and nonmetallic separation.
2. the method as described in claim 1, which is characterized in that step (1) is before being crushed electron wastes, optionally
Electron wastes are disassembled, the electronic component that function is not lost is directly recycled, then to remaining waste into
Row is broken；
Preferably, the mode of the dismantling is at least one of artificial dismantling, mechanization dismantling or semi-automatic dismantling.
3. method according to claim 1 or 2, which is characterized in that described be crushed of step (1) carries out in crusher, described
Crusher is at least one in shearing broken, jaw crusher, cone crusher, kibbler roll or impact crusher
Kind；
Preferably, the power of crusher is 2.2-13kw when described broken.
4. the method according to claim 1, which is characterized in that step (1) it is described it is broken after the partial size of material be
0.1-5cm, preferably 0.5-5cm.
5. method according to any of claims 1-4, which is characterized in that step (2) the Low Temperature Heat Treatment shaping is made
Equipment be the improved ball mill with temperature control and heating functions, rod mill, column mill, tube mill or autogenous tumbling mill in extremely
Few one kind.
6. the method according to claim 1 to 5, which is characterized in that the temperature of step (2) the Low Temperature Heat Treatment shaping
Degree is 150-300 DEG C, preferably 150-250 DEG C.
7. as the method according to claim 1 to 6, which is characterized in that step (2) the Low Temperature Heat Treatment reforming process
The revolving speed of middle equipment is 300-1500r/min, preferably 500-1500r/min.
8. the method according to claim 1 to 7, which is characterized in that step (2) the Low Temperature Heat Treatment shaping when
Between be 0.5-15h, preferably 3-12h.
9. the method according to claim 1, which is characterized in that after step (2) the Low Temperature Heat Treatment shaping
The material arrived is in spherical.
10. such as the described in any item methods of claim 1-9, which is characterized in that the mode of step (3) described sorting is pulse wind
At least one of choosing, fluidized bed air separating, jigging, electrostatic separation or friction electrical selection；
Preferably, the pulse frequency of the pulse selection by winnowing is 0.5-3Hz, wind-force 50-200kPa；
Preferably, the medium of the fluidized bed air separating is magnetic iron powder, vibration frequency 5-20Hz；
Preferably, the voltage of the electrostatic separation and friction electrical selection is 30-80kV, charging rate 0.1-10kg/min.
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| CN201910261679.2A CN109876919B (en) | 2019-04-02 | 2019-04-02 | Method for separating metal and nonmetal from electronic waste by utilizing low-temperature heat treatment shaping |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112156876A (en) * | 2020-07-24 | 2021-01-01 | 广东郡睿环保科技有限公司 | Method for improving recovery rate of nonferrous metals in household garbage incinerator slag |
| CN115287460A (en) * | 2022-09-01 | 2022-11-04 | 郑州机械研究所有限公司 | Method for preparing high-hardness and high-toughness copper-based brazing filler metal by utilizing electronic waste |
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| CN112156876A (en) * | 2020-07-24 | 2021-01-01 | 广东郡睿环保科技有限公司 | Method for improving recovery rate of nonferrous metals in household garbage incinerator slag |
| CN115287460A (en) * | 2022-09-01 | 2022-11-04 | 郑州机械研究所有限公司 | Method for preparing high-hardness and high-toughness copper-based brazing filler metal by utilizing electronic waste |
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| CN109876919B (en) | 2020-08-04 |
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