134 results about "Electronic waste" patented technology

The invention discloses a photovoltaic waste silicon and recycled carbon composite granulation coating process, and relates to the field of new energy materials. According to the method, high-purity silicon waste sheets recovered from retired photovoltaic modules and carbon materials recovered from electronic wastes are subjected to composite granulation, and a carbon coating layer is formed through heat treatment. The preparation method specifically comprises the steps of raw material pretreatment, mixing, granulation forming, coating carbonization, post-treatment and the like, the prepared silicon-carbon composite particles have good conductivity and structural stability and can be used for lithium ion battery negative electrode materials, and efficient recycling of resources and environment-friendly production are achieved.

The invention relates to the technical field of image recognition, in particular to an intelligent solid waste recognition system based on multi-modal fusion, which comprises a data acquisition module, a visual guidance module, a recognition module and a cooperative processing module, and is characterized in that the system quickly analyzes surface information such as visible light images, three-dimensional point clouds and infrared spectrums of materials through the visual guidance module; and coding to generate a dynamic vector for guiding a subsequent refined analysis task. The identification module constructs a two-dimensional pixel map on the internal density map according to the guidance of the dynamic vectors, and utilizes a map neural network to deeply analyze local density textures so as to identify high-value components such as an internal circuit board; and the co-processing module performs template matching of the internal components and external surface anomaly detection according to the instruction so as to assess the security risk. According to the method, the external form and internal structure information of the material are deeply fused through the strategy of coarse first, fine second and dynamic guidance, and intelligent recognition of the complex electronic waste is achieved.

The invention belongs to the technical field of material chemistry, and particularly relates to a method for synthesizing an amide hydrogen bond organic framework material based on a one-pot method and gold recovery application. The preparation method comprises the following steps: dissolving a dihydroxybenzidine monomer in a formic acid monomer under 15-minute ultrasonic treatment, then adding ethylene glycol, and then carrying out ultrasonic treatment on the mixture for 5 minutes; then placing the sample bottle in a drying oven at 30 DEG C for constant-temperature evaporation so as to separate out brown blocky crystals; and filtering and collecting crystals, washing with water for multiple times, and carrying out vacuum drying at 60 DEG C to obtain the final material HOF-D. The HOF-D synthesized by the method disclosed by the invention can be used for rapidly recovering Au (III) from an aqueous solution with high selectivity, cycling stability and large capacity (5186 + / -10 mg. G <-1 >), so that the efficient adsorption and recovery of Au (III) in electronic waste liquid are realized, and the HOF-D has a good application prospect.

The invention discloses an electronic waste efficient chlorination comprehensive recovery device and method, and relates to the technical field of chemical metallurgy, the electronic waste efficient chlorination comprehensive recovery device comprises a chlorination reaction cavity, a heating system, a vacuum system, an atmosphere control system and a condensation separation system; the heating system is used for controlling the temperature of the chlorination reaction cavity; the vacuum system is communicated with the heating system; the atmosphere control system comprises a chlorine gas source and a protective gas source; and the temperature of the condensation separation system is gradually reduced. Through the high-purity graphite heating assembly, the sealing structure and the atmosphere control system, the highest heating temperature is 1700 DEG C, the temperature limit of 1200 DEG C of a traditional quartz tube furnace can be broken through, the chlorine corrosion problem is solved, chlorine is not leaked, and the environment is not polluted. High-valued recovery of different metal resources can be achieved through low-temperature pyrolysis, high-temperature chlorination volatilization and three-stage condensation settling separation, and the method has the advantages of being low in energy consumption, high in recovery rate, environmentally friendly and the like and is suitable for industrial metal resource recovery.

The utility model provides electronic waste double-rotor hammer type fine crushing equipment which comprises a crushing main machine, the crushing main machine comprises a base, and a left upper cover and a right upper cover are hinged to the two sides of the top of the base through upper cover pin shafts respectively; a feeding hole is formed in the top of the base and is positioned between the left upper cover and the right upper cover; bearing seats are arranged on the two sides of the base in pairs, crushing rotors are rotationally mounted between the bearing seats, and the two groups of crushing rotors are correspondingly connected with the output ends of the two motors respectively and provide crushing power; an arc-shaped crushing cavity structure used for being matched with the crushing rotor is arranged in the base, and a discharging opening is formed in the position, located below the arc-shaped crushing cavity structure, of the bottom end of the base. The crushing equipment can realize fine separation of copper etching lines and resin on a circuit board in electronic wastes, so that high-efficiency screening of precious metals and resin can be realized subsequently.

The invention discloses a dissociation method for an out-of-service photovoltaic module, which belongs to the technical field of resourceful treatment of electronic wastes and comprises the following steps of: treating the out-of-service photovoltaic module by adopting a deep eutectic solvent; the eutectic solvent is a mixture of an alcohol hydrogen bond donor and an organic acid hydrogen bond acceptor in a molar ratio of 1: 1; according to the method, efficient separation of the glass, the silicon wafer battery and the back plate can be achieved, the purity of the product is extremely high, the purity of the glass can reach 99.95%, and the back plate keeps the original property and can be directly recycled. The whole process is environment-friendly, green and pollution-free, the separated eutectic solvent can be further recycled, the recovery rate is high, and resources are fully utilized.

The application provides an amino acid composite reagent system and a method for treating electronic waste to prepare high-purity glycine copper, and belongs to the technical field of metal hydrometallurgy and resource recycling. The application builds an ammonia catalytic reduction mechanism by designing an amino acid composite reagent system, greatly improves the leaching rate, simultaneously inhibits the dual effects of copper hydroxide precipitation and glycine chelation, and realizes efficient solution of copper ions; through narrow window regulation technology of pH at 9.5±0.2, the stability of ammonia, the activity of glycine anion are maintained, and the selective leaching rate of copper is ensured; a directional crystallization process of leaching solution is constructed, the "self-assembly directional crystallization" process of glycine copper chelate is used, based on the saturation concentration of glycine copper in the leaching solution and the stable chelate structure, through three-stage crystallization precise regulation, the preparation of high-purity crystal is realized. The process realizes the closed-loop crystallization system of "zero addition of crystal seeds and zero wastewater discharge" of the copper-containing complex leaching solution of electronic waste.

The utility model discloses a kind of LED instrument fusion TFT instrument structure, it is related to instrument structure technical field, including instrument shell, the front end surface of the instrument shell is provided with digital middle plate, the surface of the digital middle plate is provided with static indication mark, the middle position of the digital middle plate is equipped with TFT screen card slot, the middle position of the TFT screen card slot is installed with TFT high-resolution dynamic screen.Reduce electronic waste: modular design makes instrument assembly can be independently replaced or upgraded (such as only replacing TFT screen instead of whole equipment), substantially reduce the whole machine scrappage rate caused by local fault, prolong product life cycle, reduce electronic garbage generation.Resource efficient use: standardized interface and split structure simplify production process, reduce material redundancy.For example, LED and TFT module can be produced separately in batches, reduce energy consumption and raw material waste, in line with the concept of circular economy.

The present application relates to the technical field of sustainable product environmental performance monitoring, and discloses a multi-category product whole life cycle environmental monitoring self-adaptive loading fixing device, which is composed of a split detachable main frame, a multi-modal self-adaptive loading fixing module, a mechanical loading density monitoring module and a mechanical vibration feedback module. The main frame adopts a split plug-in structure, and the loading module includes four types of adaptive loading groups, which can be flexibly assembled to adapt to multi-category products relying on the opposite sliding structure, the height adjusting structure and the locking structure, without the need for customized tooling. The device is designed with pure mechanical and non-electricity, is suitable for non-electricity scenes and does not produce electronic waste. The mechanical vibration feedback module is carried to realize real-time early warning of excessive transportation vibration and greatly reduce product loss. The whole device is free of fragile electronic components, effectively solves the problems of poor adaptability of traditional devices, difficulty in collecting environmental performance data, lagging stability feedback and difficulty in maintenance, and meets the needs of sustainable product evaluation and green logistics.

The invention discloses an ultrasonic-assisted photocatalytic precious metal leaching method, and belongs to the technical field of precious metal recovery. The method comprises the following steps: (1) material pretreatment: treating electronic waste powder containing gold, silver and copper into electronic waste powder capable of being leached by a proper method; (2) preparing a reaction system: adding electronic waste powder containing gold, silver and copper into a leaching solvent, then sequentially adding FeCl3 and a photocatalyst, and uniformly stirring; (3) photocatalytic leaching: carrying out ultrasonic-assisted leaching reaction on the suspension reaction system under ultraviolet irradiation; and (4) solid-liquid separation is conducted, and leaching liquid containing precious metal and leaching residues are obtained. According to the method, the synergistic effect of FeCl3 and the photocatalyst is combined, efficient leaching of precious metal is achieved under ultraviolet irradiation, and the method has the advantages of being environmentally friendly, efficient, good in cyclicity, mild in condition, easy to operate and the like, is suitable for large-scale recovery of precious metal from electronic waste containing gold, silver and copper and has important economic and environmental significance.

The invention provides photosensitive resin, an anti-dazzle film, a preparation method of the anti-dazzle film and a degradation method of the anti-dazzle film, and relates to photosensitive resin in the field of display and optical film materials. The photosensitive resin is prepared by reaction of raw materials including a urethane acrylate oligomer, an aziridine compound and an acrylic monomer, and the molecular structure of the photosensitive resin has a beta-amino ester bond and an ultraviolet-curable acrylate group. The degradable photosensitive resin is provided by introducing beta-amino ester bonds into the photosensitive resin, so that the anti-dazzle film prepared from the coating composition containing the photosensitive resin can be quickly hydrolyzed and degraded under a mild hydrothermal condition, the problem of pollution of a polymer coating in electronic waste is fundamentally solved, and the anti-dazzle film has the advantages of high anti-dazzle performance and the like. And the environmental problem caused by the method can be effectively relieved.

The application discloses a kind of polydopamine / polyimide dioxime composite membranes for gold recovery and preparation method thereof.The method comprises the following steps: preparing polyimide dioxime solution;Polyimide dioxime solution is added to N,N-dimethylformamide solution to obtain a mixture, then trimethylolammonium solution is added to the mixture, and dopamine is added to the above obtained mixture, and the polydopamine / polyimide dioxime composite membrane can be obtained by standing in air for 24 h.The application also discloses the application of the composite membrane prepared by the method in the recovery of gold in electronic waste.The application obtains an independent self-supporting composite membrane by a simple interfacial polymerization method.The operation is simple, ecological and safe, and easy to mass production and industrial production.The composite membrane in the application can efficiently, quickly and selectively recover gold in electronic waste, improve the utilization rate of scarce resources, and provide a new idea for the design and preparation of subsequent related actual electronic waste adsorbent.

This invention provides a thiourea-tertiary amine bifunctional chitosan microsphere and its preparation method, belonging to the field of adsorption material technology. Through a stepwise functionalization and sequential crosslinking method, thiourea groups are first introduced onto the chitosan microspheres, followed by the introduction of tertiary amine groups and secondary crosslinking, successfully preparing chitosan microspheres possessing both thiourea and tertiary amine bifunctional groups. The thiourea and tertiary amine groups in the microspheres of this invention exhibit a synergistic adsorption effect on noble metal chloride anions, significantly improving the selective adsorption capacity and adsorption rate for noble metals such as palladium, platinum, and rhodium. Simultaneously, the dense three-dimensional network structure constructed through stepwise crosslinking greatly enhances the chemical stability and mechanical strength of the microspheres under strongly acidic environments, extending their service life. This preparation method is simple, mild, and environmentally friendly. The prepared adsorbent is particularly suitable for the efficient and selective recovery of noble metals from complex acidic wastewater or electronic waste leachates.

This invention discloses the application of human exposure fingerprinting of electronic waste pollution in exposure risk prediction. The human exposure fingerprinting consists of three or more of the following exposure markers: 2,4,6-tribromophenol, 2,4,5-trichlorophenol, 4-bromophenol, 1-hydroxypyrene, and bisphenol A. This invention is the first to employ the systematic method of urinary contaminant exposure profiling to achieve comprehensive screening and characterization of contaminant exposure markers related to specific components and byproducts in workers exposed to electronic waste. This is currently the most systematic organic contaminant exposure study known in this field.

The invention discloses a method for preparing a ceramic frit from electronic waste. The ceramic frit is prepared from the following raw materials in parts by mass: 40-55 parts of waste electronic glass, 15-27 parts of polishing powder, 8-10 parts of waste aluminum oxide, 6-8 parts of waste desulfurized gypsum, 3-6 parts of a boron-containing modifier, 5-8 parts of waste fuel and 1-3 parts of a mineralizing agent. The method comprises the following steps: stirring and mixing waste electronic glass, polishing powder, waste aluminum oxide, waste desulfurized gypsum, a boron-containing modifier and a mineralizer, adding waste fuel, further stirring and mixing, and then feeding into a granulator for granulation; feeding the prepared particles into a smelting furnace for calcining, wherein the calcining temperature is 1050-1150 DEG C; and carrying out water quenching molding on the molten material to obtain the ceramic frit. The method for preparing the ceramic frit from the electronic waste solves the technical problems of high energy consumption of ceramic frit calcination and resource waste caused by direct treatment of the electronic waste in the prior art.

This utility model discloses a compression device for waste processing, relating to the technical field of waste processing equipment. The device includes a body with a hydraulic plate inside. The lower end of the inner wall of the body is trapezoidal. A rapid demolding unit for demolding electronic waste is installed inside the body. A support plate in the rapid demolding unit is slidably connected inside a groove, supporting the electronic waste. A fixing clip is located on one side of the support plate, securing it when it stops moving. By incorporating the rapid demolding unit and utilizing the sliding of the support plate and the cooperation of the fixing clip, this device can quickly and conveniently demold electronic waste, improving demolding efficiency. The trapezoidal design of the lower end of the inner wall facilitates smooth demolding of the formed waste, reducing damage and ensuring waste quality, which is beneficial for subsequent recycling.

An apparatus for destroying electronic data and enabling selective material recovery is provided. A first stage shreds electronic waste into particles no greater than 20 mm by 20 mm. A second stage separates metal from non-metal using a belt-driven magnetic separator in which a continuous belt carries the particles across a magnet assembly; metal is removed to a first bin. A third stage shears the remaining non-metal to particles no greater than 2 mm by 2 mm, which pass a screen into a second bin. In certain embodiments, a vibratory feed ramp meters flow to the belt separator, and dust collection may be provided by a vacuum system and, optionally, a cyclone separator coupled by gasketed clamps.

The invention discloses a device for recovering metallic tin from tin-containing waste liquid of electronic waste, which comprises an electrolysis assembly and further comprises a pole piece mounting assembly mounted on one side of the electrolysis assembly, and a cleaning assembly mounted on the other side of the pole piece mounting assembly; the adjusting structure detects the weight of the cathode piece, the weight of the cathode piece reaches the standard, the adjusting structure starts to drive the cathode piece to be separated from the electrolysis assembly, the cathode piece is separated from the electrolysis assembly while the adjusting structure lifts the cathode piece, and power is cut off; a first resistance plate and a second resistance plate in the cleaning assembly clamp and heat the cathode piece, and the heated cathode piece causes surface tin to melt and drop. According to the method, the accumulation amount of tin on the surface of the cathode plate is monitored in real time through the weight sensor, when the detection value reaches the preset threshold value, tin removal is triggered, and by means of the scheme, the negative effect on the chemical reaction efficiency of an electrolytic tank due to the too thick tin layer can be effectively avoided.

The invention relates to the technical field of gold recovery, in particular to a pyridine-porphyrin-based porous organic polymer as well as a preparation method and application thereof. The pyridine-porphyrin-based porous organic polymer Pyd-PPOPs-Br is reasonably designed and synthesized by integrating a pyridine site with positive charges and a porphyrin part into a framework. When the Pyd-PPOPs-Br is used as an Au (III) recovery adsorbent, the Pyd-PPOPs-Br shows excellent performance, and the obvious adsorption capacity of 3.787 g / g is achieved. In a practical application experiment, the Pyd-PPOPs-Br selectively recovers more than 90% of gold from the electronic waste leachate.

The application discloses a kind of self-adapting flameless combustion multi-pollutant collaborative control methods for electronic waste pyrometallurgical recovery two combustion chambers, it is related to the technical field of combustion control and pollutant generation in situ inhibition of electronic waste pyrometallurgical recovery.The combustible component flue gas is introduced into the front section of two combustion chambers, so that the combustible flue gas environment is formed in the front section of two combustion chambers;The auxiliary fuel is introduced into the front section of two combustion chambers in the form of axial injection, and the flameless distributed combustion main reaction zone is formed in the front section of two combustion chambers;In the rear end of two combustion chambers, the combustion-supporting medium is introduced in a staged oxygen-supplying manner, and the oxidation reaction of carbon monoxide and intermediate combustible components in the combustion products is completed through a high-temperature oxidation environment;Based on the temperature field distribution, oxygen concentration distribution and combustion incomplete component characteristic parameters in two combustion chambers, the fuel injection parameters and combustion-supporting medium staged supply parameters are adjusted, so that the overall combustion state in two combustion chambers is stably maintained in the flameless distributed combustion state.The application can improve the overall pollutant control stability and operation reliability of the system.

The present application relates to the technical field of smart devices, and discloses smart glasses. The smart glasses comprise a glasses frame and a functional assembly, wherein the functional assembly is detachably mounted on the inner side of the glasses frame. The present application aims to solve the problem of consumer over‑consumption caused by excessive functionalities in AR glasses, and to reduce the generation of electronic waste.

The application belongs to the technical field of preparation of adsorption separation functional materials, and discloses a controllable preparation method of nano-cage type thiourea-resorcinol-formaldehyde resin adsorbent and application thereof. The method uses silica nanospheres as a hard template, synchronously dopes thiourea and silica during growth of a phenolic resin layer, and finally etches and removes the silica template to controllably prepare cross-wrinkled resin nanocage microspheres. The method not only realizes controllable morphology, but also greatly improves adsorption performance. The application has important economic value in the field of precious metal recovery, can effectively deal with the problems of waste of precious metal resources and environmental pollution in electronic waste, and provides a new idea for designing low-cost high-performance adsorbents.

The application provides a method for efficiently recycling valuable elements by synergistically smelting neodymium iron boron waste and electronic waste, which comprises the following steps: preparing a mixture of powdered neodymium iron boron waste, fine-grained electronic waste, a slagging agent and a solid reducing agent; and using a top-blown smelting furnace to oxidize and reduce the mixture; by controlling the conditions of the oxidation process, the iron and rare earth in the mixture are oxidized into oxides and enter the slag, copper is not oxidized and captures rare and precious metals such as gold and silver to form crude copper and sink to the bottom of the furnace and is discharged; by controlling the conditions of the reduction process, the iron oxide in the mixed rare earth slag is reduced to metallic iron, and the rare earth oxide is not reduced and remains in the slag layer; the iron with a larger density than the rare earth slag sinks to the bottom of the furnace, and after static stratification, the iron and the rare earth slag are discharged from the metal outlet and the slag outlet respectively, so that the separation of the rare earth and the iron is realized; and finally, the synchronous recovery of the rare earth, the iron in the neodymium iron boron waste and the copper, gold and silver in the electronic waste is realized; the method has a short process flow, low energy consumption and good economic and environmental benefits.

The application provides a method for electrochemically recycling tin and zinc resources from electronic waste, and belongs to the field of solid waste resource recycling. The method comprises the following processes: grinding electronic waste containing tin and zinc into ore powder. Disperse calcium salt, L-5-hydroxy tryptophan and ore powder in a solvent, and adjust the pH to alkaline to obtain an ore slurry. Electrolyze the ore slurry to obtain a cathode product containing tin and zinc, a liquid phase product containing tin and zinc, and a solid residue. The tin and zinc containing cathode product and the tin and zinc containing liquid phase product are post-treated to obtain tin compounds and zinc compounds. The working potential of electrolysis is 0.5 V vs. SCE-2 V vs. SCE. Through the precise coupling of the designed functional molecules and the electrochemical conditions, the selective activation, transmission and directional synthesis of the target metal at the molecular level are realized.

An electrochemical leaching system for recovering metals from electronic waste comprises an electrochemical cell configured to produce a hydrogen peroxide-enriched electrolyte. A power supply is in electrical communication with the electrochemical cell and a leaching reactor is configured to contain fragmented electronic waste and to produce a metal-enriched electrolyte from the fragmented electronic waste. The electrochemical cell and the leaching reactor are in fluid communication with each other. Related methods are also disclosed.

The invention discloses a method for preparing a cobalt oxide nanorod catalyst for oxygen evolution by recycling waste 3C lithium batteries, and relates to the technical field of recycling conversion of waste lithium batteries. Aiming at the problems in the prior art that the waste lithium battery is easy to explode during mechanical crushing, the strong acid leaching pollution is large, the additional value of the recovered product is low and the like, a pre-discharge-liquid nitrogen flash freezing synergistic pretreatment technology is innovatively adopted, and a multi-stage physical field separation system is combined to realize efficient separation of the positive electrode material; cobalt and lithium are selectively extracted through an organic weak acid directional leaching system, and equipment corrosion and toxic gas release are avoided; and extracting and separating the leachate through a solvent to obtain a high-purity lithium salt and a divalent cobalt solution, and synthesizing the Co3O4 nanorod with specific (112) crystal face orientation by a regulated and controlled one-step hydrothermal method. The catalyst shows low overpotential, high Tafel slope and cycling stability superior to commercial IrO2 at the current density of 10mA / cm < 2 > in alkaline electrolyte. According to the technology, the cobalt recovery rate is larger than or equal to 95%, the lithium recovery rate is larger than or equal to 90%, and double benefits of electronic waste green treatment and new energy material low-cost preparation are achieved.

The application discloses a three-dimensional electro-catalytic oxidation device, which comprises a three-dimensional electro-catalytic reactor and a power supply; the three-dimensional electro-catalytic reactor is internally provided with an anode plate, a cathode plate and a particle electrode between the anode plate and the cathode plate; the particle electrode is modified scale graphite loaded with La2O3-Al2O3-TiO2; the anode plate and the cathode plate are respectively connected with the power supply through wires; the power supply comprises a linearly increasing power supply mode and an exponentially decaying power supply mode; the time of the two power supply modes is the same; in the first half of the reactor reaction time, the power supply is powered in the linearly increasing power supply mode, and at this time, the current density is linearly increased; in the second half of the reactor reaction time, the power supply is powered in the exponentially decaying power supply mode. The application further discloses a method for treating electronic waste water by using the three-dimensional electro-catalytic oxidation device.

The present disclosure provides a modular biodegradable battery system addressing limitations of conventional batteries. The system comprises removable energy pods, each containing a first electrode, a second electrode, separate compartments for organic material and vinegar, and an activation mechanism to mix these components into a biodegradable slurry. A reusable modular base removably couples with the energy pods. This design enables customizable power configurations while utilizing environmentally friendly materials. The activation mechanism allows on-demand power generation, overcoming shelf-life issues of pre-mixed biodegradable batteries. The modular base facilitates easy replacement of depleted pods and supports series or parallel connections for voltage or current amplification. This system offers a sustainable alternative to traditional batteries, reducing electronic waste and environmental impact.

An electrochemical deposition apparatus and method for the selective recovery of metal. The electrochemical deposition apparatus comprises a porous cathodic material, an anode, an inter-electrode region formed by the anode and cathode, and a gas release channel. The method may comprise passing a solution comprising a metal into a cavity, changing an oxidation state of a metal, and selectively depositing the metal onto a porous cathodic material. The electrochemical deposition apparatus may recover metal from metal feed in the form of metal hydroxides. The recovered metal may be from any source including, but not limited to, minerals, electronic waste, and black mass.

The invention discloses a dynamic separation method and device for mixed iron powder, and belongs to the technical field of powder material separation. According to the method, a three-stage magnetoelectric field synergistic separation normal form of'weak magnetic pre-separation-electric field fixing-strong magnetic field cleaning 'is innovatively provided, a 5-10 Hz low-frequency micro-vibration active agglomeration breaking technology is integrated, the core problems that strong magnetic powder interferes with weak magnetic powder separation and particles adhere are solved by dynamically regulating and controlling the magnetic field gradient and the electric field intensity, and the separation efficiency reaches up to 95.2%. On the device, through the collaborative design of a translational substrate, a micro-vibration motor, a permanent magnet sliding table, a long-strip-shaped electrode and a space orthogonal collection box, the separation path is free of interference. The method is optimized on the basis of a'multi-field-particle 'closed-loop coupling model, and is particularly suitable for scenes with high requirements on drying and purity, such as waste lithium battery recovery, electronic waste treatment and micro-scale precision manufacturing.