CN113528829A - Process for recovering metals in electronic garbage by microwaves - Google Patents
Process for recovering metals in electronic garbage by microwaves Download PDFInfo
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- CN113528829A CN113528829A CN202110776476.4A CN202110776476A CN113528829A CN 113528829 A CN113528829 A CN 113528829A CN 202110776476 A CN202110776476 A CN 202110776476A CN 113528829 A CN113528829 A CN 113528829A
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- 150000002739 metals Chemical class 0.000 title claims abstract description 31
- 239000010793 electronic waste Substances 0.000 claims abstract description 60
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000000126 substance Substances 0.000 claims abstract description 43
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 21
- 238000011084 recovery Methods 0.000 claims abstract description 20
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- 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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Abstract
The invention provides a process for recovering metals in electronic garbage by microwaves, which relates to the technical field of waste recovery treatment and comprises the following steps: heating the electronic garbage in the inner cavity based on microwaves within a target duration, and introducing a preset amount of air to obtain a first substance; heating the first substance to a target temperature based on the microwaves within a first time period, and introducing a first preset amount of nitrogen into the inner cavity to obtain a second substance; closing the microwave, and introducing a second preset amount of nitrogen to cool until the second substance is solidified; wherein the second material comprises a metal. According to the invention, in the process of pyrolyzing and burning the electronic waste by microwaves, the addition amount of air and nitrogen and the temperature of each process are controlled, so that the metal in the electronic waste is separated from the vitreous body in a cracking way, and the recovery rate of the metal in the waste electronic waste is improved.
Description
Technical Field
The invention relates to the technical field of electronic waste recovery treatment, in particular to a process for recovering metals in electronic waste by microwaves.
Background
In recent years, with the rapid influx of various electronic products into modern life, the quantity of electronic waste per year is also increasing dramatically, which is a major problem that puzzles the global environment. The resource and pollution are both the characteristics of electronic waste, the electronic waste is mainly composed of metal, ceramic, glass, plastic and the like, particularly contains a certain amount of precious metal, can be recycled, and has a lot of components, but if the electronic waste is not treated properly, the heavy metal, the polymer and the like in the electronic waste can cause environmental pollution very easily. At present, the problem of environmental pollution caused by improper recovery and treatment of electronic garbage occurs in partial areas of China, and the healthy life of people is seriously harmed.
In the prior art, the most widely used recovery technology for electronic waste recovery mainly comprises: mechanical separation techniques, pyrometallurgy, hydrometallurgy, and the like. However, although these technologies have become mature and can basically meet the discharge standard of the expected treatment, the methods for recycling electronic waste in the prior art still have the problems of high energy consumption of the treatment process and low recovery degree of precious metals in the electronic waste.
Therefore, researches and developments of a novel high-efficiency, energy-saving, environment-friendly and high-recycling-degree electronic waste treatment technology are urgent.
Disclosure of Invention
The invention aims to provide a process for recovering metals in electronic waste by microwaves aiming at the defects in the electronic waste recovery processing process in the prior art, so as to solve the problems of high energy consumption in the processing process and low recovery degree of precious metals in the electronic waste in the method for recovering the electronic waste in the prior art.
In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:
in a first aspect, the invention provides a process for recovering metals in electronic waste by microwaves, which comprises the following steps:
heating the electronic garbage in the inner cavity based on microwaves within a target duration, and introducing a preset amount of air to obtain a first substance;
heating the first substance to a target temperature based on the microwaves within a first time period, and introducing a first preset amount of nitrogen into the inner cavity to obtain a second substance;
closing the microwave, and introducing a second preset amount of nitrogen to cool until the second substance is solidified; wherein the second material comprises a metal.
Optionally, the target duration includes a second duration and a third duration, the electronic waste in the inner cavity is heated based on the microwave within the target duration, and a preset amount of air is introduced, so as to obtain the first substance, including:
heating the inner cavity to a first temperature threshold value within the second time period based on the microwaves, and introducing a first preset amount of air to crack the electronic garbage to obtain a cracked third substance;
introducing a second preset amount of air into the third substance, and keeping the inner cavity at a second temperature threshold value within the third time period to obtain a first substance; wherein the first predetermined amount is greater than the second predetermined amount.
Optionally, the first temperature threshold is 600 degrees, the cavity is heated to the first temperature threshold within the second duration based on the microwaves, and a first preset amount of air is introduced to crack the electronic waste, so as to obtain a cracked third substance, including:
and in the second time period, heating the inner cavity to 600 ℃ based on the microwaves, and introducing a first preset amount of air to crack the electronic garbage to obtain a cracked third substance.
In a second aspect, the invention discloses a device for recovering metals in electronic waste by microwave, comprising: the microwave oven comprises a metal cavity, a heat insulation layer, a fire insulation layer, a wave absorption layer, an inner cavity, a microwave source, an air inlet and an air outlet;
wherein, a first valve and an air pump are arranged at the air inlet; a second valve is arranged at the air outlet; the inner wall of the metal cavity is connected with the heat insulation layer, and the heat insulation layer is also connected with one side of the fire insulation layer; the other side of the fire barrier is provided with the wave absorbing layer; the wave absorbing body is not arranged at the top of the inner cavity; the microwave source is arranged on the top of the outer layer of the metal cavity; the air inlet and the air outlet are arranged on opposite surfaces of the metal cavity and communicated with the inner cavity.
In a third aspect, the present invention further discloses an electronic device, including: comprising a processor, a memory for storing instructions, the processor being configured to execute the instructions stored in the memory to cause the apparatus to perform the process of microwave recovery of metals from electronic waste as described in the first aspect.
In a fourth aspect, the present invention also discloses a computer-readable storage medium, in which computer-executable instructions are stored, and when the instructions are executed, the computer is caused to execute the process for microwave recovery of metals in electronic waste according to the first aspect.
The invention has the beneficial effects that: the invention provides a process for recovering metals in electronic garbage by microwaves, which relates to the technical field of waste recovery treatment and comprises the following steps: heating the electronic garbage in the inner cavity based on microwaves within a target duration, and introducing a preset amount of air to obtain a first substance; heating the first substance to a target temperature based on the microwaves within a first time period, and introducing a first preset amount of nitrogen into the inner cavity to obtain a second substance; closing the microwave, and introducing a second preset amount of nitrogen to cool until the second substance is solidified; wherein the second material comprises a metal. According to the invention, in the process of pyrolyzing and burning the electronic waste by microwaves, the addition amount of air and nitrogen and the temperature of each process are controlled, so that the metal in the electronic waste is separated from the vitreous body in a cracking way, and the recovery rate of the metal in the waste electronic waste is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of a process flow of recovering metals in electronic waste by microwave according to an embodiment of the present invention;
FIG. 2 is a schematic view of a process apparatus for recovering metals from electronic waste by microwave according to another embodiment of the present invention;
fig. 3 is a schematic view of a process apparatus for recovering metals from electronic waste by using microwaves according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Fig. 1 is a schematic flow chart of a process for recovering metals from electronic waste by microwaves according to an embodiment of the present invention; FIG. 2 is a schematic view of a process apparatus for recovering metals from electronic waste by microwave according to another embodiment of the present invention; fig. 3 is a schematic view of a process apparatus for recovering metals from electronic waste by using microwaves according to another embodiment of the present invention. The following will describe in detail the process of the process for recovering metals from electronic waste by using microwaves according to the embodiment of the present invention with reference to fig. 1 to 3.
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment of the invention provides a process method for recovering metals in electronic waste by microwaves, which is applied to a device with a process for recovering the metals in the electronic waste by microwaves. The steps involved in the method are described in detail below with reference to fig. 1.
Step 101: and heating the electronic garbage in the inner cavity based on the microwaves within the target time, and introducing a preset amount of air to obtain a first substance.
In the embodiment of the invention, the waste circuit board is electronic waste generated by electronic products, and the circuit board usually contains about 30% of plastics (epoxy resin, polyethylene, polyester, phenolic aldehyde and the like, halides, nitrogen-containing compounds), 30% of inert oxides (glass fiber and the like) and 40% of metals.
In the embodiment of the present invention, the target duration includes the second duration and the third duration. Correspondingly, the step of heating the electronic waste in the inner cavity based on the microwave within the target duration, and introducing a preset amount of air to obtain a first substance comprises the following steps:
step 1011: and heating the inner cavity to a first temperature threshold value within the second time period based on the microwaves, and introducing a first preset amount of air to crack the electronic garbage to obtain a cracked third substance.
In an embodiment of the present invention, the first temperature threshold is 600 degrees, the heating of the inner cavity to the first temperature threshold within the second time period based on the microwave, and introducing a first preset amount of air to crack the electronic waste, so as to obtain a cracked third substance includes:
and in the second time period, heating the inner cavity to 600 ℃ based on the microwaves, and introducing a first preset amount of air to crack the electronic garbage to obtain a cracked third substance.
Illustratively, the second time threshold is 10-100 minutes, and the second time includes microwave heating temperature rise time and heat preservation time; and in the second time period, the waste electronic garbage in the inner cavity is heated under the action of microwaves in the inner cavity, a large amount of air is introduced into the inner cavity, the cracking gas is diluted and is discharged from the air outlet, and the organic matters are completely cracked. Further, the heat preservation refers to that the temperature in the inner cavity is kept within a range of less than or equal to 600 ℃, so that the waste electronic garbage is completely cracked.
Step 1012: introducing a second preset amount of air into the third substance, and keeping the inner cavity at a second temperature threshold value within the third time period to obtain a first substance; wherein the first predetermined amount is greater than the second predetermined amount.
In the embodiment of the invention, the third substance, namely the cracked waste electronic garbage is subjected to microwave heating on the cracked waste electronic garbage in the inner cavity, wherein the second temperature threshold is 610-; the third time period includes a time period during which the temperature in the internal cavity rises from the first temperature to the second temperature threshold and a time period during which the temperature is maintained.
Illustratively, the threshold value of the third time period is 10-100 minutes, the microwave power is further adjusted to burn the electronic waste cracked in the inner cavity, and meanwhile, a small amount of air is introduced to completely burn and discharge the organic matters.
Step 102: and heating the first substance to a target temperature based on the microwaves within a first time period, and introducing a first preset amount of nitrogen into the inner cavity to obtain a second substance.
In the embodiment of the invention, the threshold value of the target temperature is 1330-2400 ℃, and the first time duration is 10-100 minutes; and in the process that the electronic waste is heated to the target temperature from the second temperature after being combusted in the inner cavity, introducing nitrogen to replace air in the inner cavity, closing the air valve, and respectively agglomerating the metal and the glass body in the electronic waste when the remainder is completely changed into a molten state.
Step 103: and closing the microwave, and introducing a second preset amount of nitrogen to cool until the second substance is solidified.
Wherein the second material comprises a metal.
In the embodiment of the invention, a controller in the device determines that metal and glass in the electronic garbage are respectively agglomerated according to the detected state of the electronic garbage in the inner cavity, a microwave source at the top of a metal cavity is closed, nitrogen is introduced to cool the inner cavity, and after the glass and the metal are solidified, the metal and the glass are crushed and separated; or the controller determines whether to turn off the microwave source based on the received nitrogen gas introduction time; optionally, after the nitrogen gas introduction time reaches the preset time, the microwave source is closed, further, the nitrogen gas introduction time reaches the preset time again, and after the solidification of the glass body and the metal in the electronic waste is determined, the metal and the glass body are crushed and separated.
The embodiment of the invention provides a process for recovering metals in electronic waste by microwaves, which relates to the technical field of waste recovery treatment and comprises the following steps: heating the electronic garbage in the inner cavity based on microwaves within a target duration, and introducing a preset amount of air to obtain a first substance; heating the first substance to a target temperature based on the microwaves within a first time period, and introducing a first preset amount of nitrogen into the inner cavity to obtain a second substance; closing the microwave, and introducing a second preset amount of nitrogen to cool until the second substance is solidified; wherein the second material comprises a metal. According to the invention, in the process of pyrolyzing and burning the electronic waste by microwaves, the addition amount of air and nitrogen and the temperature of each process are controlled, so that the metal in the electronic waste is separated from the vitreous body in a cracking way, and the recovery rate of the metal in the waste electronic waste is improved.
In another possible embodiment, the present invention further provides a process device for recovering metals from electronic waste by using microwaves, as shown in fig. 2, the process device for recovering metals from electronic waste by using microwaves, including: the microwave heating device comprises a metal cavity 1, a heat insulation layer 2, a fire insulation layer 3, a wave absorption layer 4, an inner cavity 5, a microwave source 6, an air inlet 7 and an air outlet 8.
Wherein, a first valve and an air pump 9 are arranged at the air inlet 7; a second valve is arranged at the air outlet 8; the inner wall of the metal cavity 1 is connected with the heat insulation layer 2, and the heat insulation layer 2 is also connected with one side of the fire insulation layer 3; the other side of the fire barrier layer 3 is provided with the wave absorbing layer 4; the wave absorbing body 4 is not arranged at the top of the inner cavity 5; the microwave source 6 is arranged on the top of the outer layer of the metal cavity 1; the air inlet 7 and the air outlet 8 are arranged on opposite surfaces of the metal cavity 1 and communicated with the inner cavity 5.
In the embodiment of the invention, the microwave source 6 is arranged on the top of the metal cavity 1, the microwave source 6 comprises a plurality of microwave source arrays, and the plurality of microwave source arrays are arranged on the top of the metal cavity 1.
The microwave is an electric wave having a frequency of 300 mhz to 300 ghz, and water molecules in the heated medium material are polar molecules. Under the action of a rapidly changing high-frequency point magnetic field, the polarity orientation of the magnetic field changes along with the change of an external electric field. The effect of mutual friction motion of molecules is caused, at the moment, the field energy of the microwave field is converted into heat energy in the medium, so that the temperature of the material is raised, and a series of physical and chemical processes such as thermalization, puffing and the like are generated to achieve the aim of microwave heating.
The microwave heating has the following advantages: the heating time is short; the heat energy utilization rate is high, and energy is saved; heating uniformly; the microwave source is easy to control, and the microwave can also induce the catalytic reaction.
Further, the microwave source 6 includes a magnetron, a waveguide, a radiator, and a microwave window, wherein the microwave window is made of silicon carbide ceramic and refractory bricks.
Illustratively, the microwaves are generated by a microwave source, which is primarily comprised of a high power magnetron. The magnetron is a device which completes energy conversion by utilizing the movement of electrons in vacuum and can generate high-power microwave energy, for example, a 4250MHz magnetic wave tube can obtain 5MHz, and a 4250MHz klystron can obtain 30MHz, so that the microwave technology can be applied to the technical field of wastewater treatment. The magnetron is connected to a waveguide for radiating microwaves into the cavity 5 through a microwave window to which the radiator is connected.
Specifically, the air inlet 8 includes a first air inlet and a second air inlet; wherein, the first air inlet and the second air inlet are both provided with a first valve and an air pump. Optionally, the first air inlet is used for introducing air, and the second air inlet is used for introducing nitrogen; or the first air inlet is used for introducing the nitrogen, and the second air inlet is used for introducing the air.
In the embodiment of the invention, the first air inlet is provided with the first air inlet valve and the air pump, the second air inlet is provided with the first air inlet valve and the air pump, and the two air inlets are respectively used for introducing air and nitrogen.
Illustratively, in a microwave cracking stage, the microwave source 6 heats the electronic waste gas garbage in the cavity 5, the microwave is heated to 600 ℃, the first air inlet valve is further opened, air is pumped into the first air inlet or the second air inlet through the air pump, the second air outlet valve of the air outlet 8 is closed, and after the reaction is carried out for a preset time, the second air outlet valve is opened to discharge the reacted gas from the air outlet 8; wherein the preset time can be 10-100 minutes.
Further, the inner cavity 5 is further heated under the action of microwaves, the reaction residues are burnt, a small amount of air is introduced, and after the preset time is kept, the residual air is discharged through an air outlet; and finally, closing the microwave source 6, pumping nitrogen into the inner cavity 5 through an air pump, cooling the inner cavity, and crushing and separating the metal after the metal and the glass body in the reaction residues are solidified.
Optionally, the wave absorbing layer is a microwave absorber; wherein the microwave absorber comprises silicon carbide or graphite.
The embodiment discloses a device of metal among electronic waste is retrieved to microwave relates to electron discarded object recovery processing technology field, and the device includes: the microwave heating device comprises a metal cavity 1, a heat insulation layer 2, a fire insulation layer 3, a wave absorption layer 4, an inner cavity 5, a microwave source 6, an air inlet 7 and an air outlet 8; wherein, a first valve and an air pump 9 are arranged at the air inlet 7; a second valve is arranged at the air outlet 8; the inner wall of the metal cavity 1 is connected with the heat insulation layer 2, and the heat insulation layer 2 is also connected with one side of the fire insulation layer 3; the other side of the fire barrier layer 3 is provided with the wave absorbing layer 4; the wave absorbing body 4 is not arranged at the top of the inner cavity 5; the microwave source 6 is arranged on the top of the outer layer of the metal cavity 1; the air inlet 7 and the air outlet 8 are arranged on opposite surfaces of the metal cavity 1 and communicated with the inner cavity 5. That is, the device of the invention is based on microwave pyrolysis of electronic waste to molten state, and then cooling in the cavity, so that the metal is separated from the substrate.
Fig. 3 is a schematic view of a process device for recovering metals from electronic waste by using microwaves according to another embodiment of the present invention, and is integrated in a terminal device or a chip of the terminal device.
The device includes: memory 301, processor 302.
The memory 301 is used for storing a program, and the processor 302 calls the program stored in the memory 301 to execute the above-mentioned embodiment of the process method for recovering metals in electronic waste by microwave. The specific implementation and technical effects are similar, and are not described herein again.
Preferably, the invention also provides a program product, such as a computer-readable storage medium, comprising a program which, when being executed by a processor, is adapted to carry out the above-mentioned method embodiments.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Claims (6)
1. A process for recovering metals in electronic garbage by microwaves is characterized by comprising the following steps:
heating the electronic garbage in the inner cavity based on microwaves within a target duration, and introducing a preset amount of air to obtain a first substance;
heating the first substance to a target temperature based on the microwaves within a first time period, and introducing a first preset amount of nitrogen into the inner cavity to obtain a second substance;
closing the microwave, and introducing a second preset amount of nitrogen to cool until the second substance is solidified; wherein the second material comprises a metal.
2. The microwave recovery process of metals in electronic waste according to claim 1, wherein the target time period includes a second time period and a third time period, and the microwave heating of the electronic waste in the inner cavity and the introduction of the predetermined amount of air within the target time period to obtain the first substance includes:
heating the inner cavity to a first temperature threshold value within the second time period based on the microwaves, and introducing a first preset amount of air to crack the electronic garbage to obtain a cracked third substance;
introducing a second preset amount of air into the third substance, and keeping the inner cavity at a second temperature threshold value within the third time period to obtain a first substance; wherein the first predetermined amount is greater than the second predetermined amount.
3. The microwave recovery process of metals in electronic waste according to claim 2, wherein the first temperature threshold is 600 degrees, the microwave-based heating of the inner cavity to the first temperature threshold within the second time period, and the introduction of a first preset amount of air to crack the electronic waste, so as to obtain a cracked third substance includes:
and in the second time period, heating the inner cavity to 600 ℃ based on the microwaves, and introducing a first preset amount of air to crack the electronic garbage to obtain a cracked third substance.
4. An apparatus for recovering metals in electronic garbage by microwave, the apparatus comprising: the microwave oven comprises a metal cavity, a heat insulation layer, a fire insulation layer, a wave absorption layer, an inner cavity, a microwave source, an air inlet and an air outlet;
wherein, a first valve and an air pump are arranged at the air inlet; a second valve is arranged at the air outlet; the inner wall of the metal cavity is connected with the heat insulation layer, and the heat insulation layer is also connected with one side of the fire insulation layer; the other side of the fire barrier is provided with the wave absorbing layer; the wave absorbing body is not arranged at the top of the inner cavity; the microwave source is arranged on the top of the outer layer of the metal cavity; the air inlet and the air outlet are arranged on opposite surfaces of the metal cavity and communicated with the inner cavity.
5. An electronic device, characterized in that the electronic device comprises: comprising a processor, a memory for storing instructions, the processor being configured to execute the instructions stored in the memory to cause the apparatus to perform a process of microwave recovery of metals from electronic waste as claimed in any one of claims 1 to 3.
6. A computer-readable storage medium having stored thereon computer-executable instructions that, when executed, cause a computer to perform the process of microwave recovery of metals from electronic waste as claimed in any one of claims 1 to 3.
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