282 results about "Electronic waste" patented technology

The invention relates to an electronic waste automatic classification and recovery system based on artificial intelligence recognition. The electronic waste automatic classification and recovery system comprises a waste conveying module, an artificial intelligence recognition module, an intelligent sorting module, a dynamic sorting control system, a recovery processing module and a data analysis and feedback module. The waste conveying module conveys the electronic waste to a recognition area in order, and the recognition module conducts multi-dimensional feature recognition on the waste through vision, spectrum and 3D morphological analysis technologies. And the intelligent sorting module sorts the materials to a specified sorting box according to the recognition result. The dynamic sorting control system can adjust a sorting path in real time according to task requirements. And the recovery processing module is used for further processing the sorted materials through a crushing device, a magnetic separation device and a rare and noble metal extraction device. And the data analysis and feedback module analyzes and optimizes data of identification and sorting operation, so that the processing efficiency and the recovery rate are improved.

The invention provides an environment-friendly cyanide-free gold leaching agent and a technology for extracting gold in electronic waste through the environment-friendly cyanide-free gold leaching agent, and belongs to the technical field of hydrometallurgy. A series of environment-friendly cyanide-free gold leaching agents are prepared by designing the environment-friendly cyanide-free gold leaching agents, using non-toxic and renewable biomass resources as raw materials, optimizing the molecular structure level of the raw materials through a series of derivatization means and introducing specific functionalized molecular groups. The problem that an existing cyanide-free leaching agent is difficult to treat electronic waste is solved. On the premise that technology feasibility is met, balance of economy and environment is achieved to the maximum extent, the gold leaching technological process is simple, operation is convenient, the gold leaching technological process conforms to original facilities of existing enterprises, and extra equipment upgrading cost does not need to be input.

The invention belongs to the field of electronic wastes, and particularly relates to a waste circuit board recycling and reusing method which comprises the following steps: step 1, a preliminary decomposition stage of a waste circuit board: decomposing the waste circuit board into fragments suitable for follow-up treatment through a mechanical crushing and screening physical method; 2, a chemical leaching stage: dissolving metal components in the waste circuit board from the fragments by using a chemical solvent; 3, a metal recovery and separation stage: reducing metal ions dissolved in the solution into metal by adopting an electrolytic method; step 4, a harmful substance removal stage: removing harmful substances in the waste circuit board; 5, a resource reutilization and comprehensive utilization stage: through a recovery system unit, the recovered metal, plastic substrates and electronic component materials are extracted and utilized, and a feedback control system optimizes the resource recovery efficiency according to real-time data; and step 6, closed-loop treatment and environment-friendly compliance stage: treating wastewater, waste gas and solid waste through a closed-loop system unit.

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.

Methods and systems for recovering and reusing conductive additives for flash Joule heating. The conductive additive or flash Joule heated material utilized, such as electronic waste, ore, fly ash, soil, and / or bauxite slag, may be recovered at high recovery yields higher than 85%, and then may be reused for additional flash Joule heating processes. The conductive additive may be separated from the product of the flash Joule heating process, such as by screening or by centrifugation, filtration, and drying.

The present disclosure relates to methods for recovering metals from used lithium-ion batteries and related electronic wastes. The methods provide modular, inexpensive, and energy efficient means for recovering up to 99.9% pure lithium, nickel, cobalt, and manganese in the form of various oxides or salts, e.g., phosphates, sulfates, or hydroxides. The methods produce nearly zero waste, as many of the recovered waste products can be purified and / or recycled.

The invention aims to provide a method for preparing micron-sized zinc metastannate by wet recovery of tin and zinc in electronic wastes and a synthetic method of 4-hydroxy-1-indanone, and belongs to the technical field of metal recycling. According to the method, amino coordination and carboxylic acid chelation are utilized, tin and zinc in the electronic waste are selectively leached out under the mild acidic condition, impurity metals such as iron and copper are retained in residues due to the difference of complexing constants, and metal ion grade separation (selectivity gt and 99%) is achieved. And then, through evaporation-crystallization regulation and control, the Sn-Zn complex is directionally reconstructed into micron-sized zinc metastannate. In indanone synthesis, micron-sized zinc metastannate forms a local protonic acid environment by adsorbing trace moisture in a reaction system, synchronously activates a C = N bond (Lewis acid site catalysis) of an imine substrate and stabilizes a cyclization transition state (hydrogen bond guiding effect), so that the activation energy of [4 + 1] cycloaddition reaction is reduced, reaction equilibrium is driven to move towards a product end, and the yield of indanone is increased. And quantitative conversion of indanone under mild conditions (the yield is 60%) is realized.

Embodiments can relate to techniques for recycling metals from electronic waste (e.g. waste printed circuit boards (WPCBs), consumer electronics, industrial electronics, etc.). Specifically, embodiments can relate to a method for processing product to liberate target materials within that product in an optimized manner. An exemplary method can involve generating a mix by subjecting the product to one or more comminution techniques to reduce one or more components of the product to particles having, on average, a predetermined size, and then subjecting the particles to additional comminution and / or separation techniques. The first round of comminution used to reduce the components to the predetermined size can lead to greater efficiencies and optimized liberation of target materials.

The invention belongs to the technical field of preparation of adsorption separation functional materials, and discloses a controllable preparation method and application of an S-COFs nanosheet adsorbent. According to the method, 2, 5-dimethyl sulfide terephthalaldehyde DMTTPA and 1, 3, 5-tris (4-aminophenyl) benzene TAPB are taken as monomers, cyanobenzene is taken as a reaction solvent, benzoic acid is taken as a catalyst, aniline is taken as a competitor, and the high-crystallinity S-COF adsorbent is controllably prepared under the condition of high temperature by accurately regulating and controlling crystallization time and combining a dialysis purification technology. The method not only realizes controllable morphology, but also greatly improves the adsorption performance. The method has important economic value in the field of precious metal recovery, the problems of precious metal resource waste and environmental pollution in electronic waste can be effectively solved, and meanwhile, a new thought is provided for designing a low-cost high-performance adsorbent.

The invention provides a preparation process of a plain conductive cloth single-sided adhesive tape, which belongs to the technical field of chemistry, and comprises the following steps: preparing a conductive adhesive; preprocessing the plain conductive cloth; a coating process; performing segmented drying; curing and forming; pressing and slitting are carried out; corn starch is used as a raw material, a three-dimensional network structure adhesive is constructed through a gradient oxidation cross-linking modification technology, a conductive-bonding interface is optimized in cooperation with conductive carbon black and a silane coupling agent, finally, the adhesive is compounded with metallized polyester cotton plain conductive cloth, the high-performance adhesive tape is prepared, carbon emission in the production process is reduced, and the production cost is reduced. And the waste adhesive tape can be biodegraded by 90% in a natural environment, so that the problem of pollution caused by the persistent adhesive in the electronic waste is fundamentally relieved, and an innovative solution is provided for green electronic manufacturing.

The invention provides an electronic waste metal resource harmless extraction process based on a green chemical method, and aims to realize efficient recovery and harmless treatment of precious metals and common metals in electronic wastes. According to the process, low-toxicity organic acid (such as citric acid and oxalic acid) is adopted as a solvent, and metal dissolution and selective complexation are carried out under the condition of normal temperature or low temperature. By regulating and controlling the pH value of the solution and the concentration of the complexing agent, efficient separation and extraction of metal are achieved. The system integrates an automatic monitoring module, the dissolving, electrolyzing and precipitating processes are adjusted in real time, meanwhile, a cyclic waste liquid treatment system is adopted, and water resource consumption and waste liquid discharge are effectively reduced. Compared with a traditional high-temperature smelting and acid leaching process, the method has the advantages that energy consumption and environmental pollution are greatly reduced, and the metal recovery rate and economic benefits are improved. The process is suitable for treating various electronic wastes, conforms to the green and environment-friendly concept, and has a wide market application prospect.

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.

An electronic waste (E-waste) recycling process and composite article or material using the E-waste. E-waste, for example including printed circuit boards (PCBs) and / or electronic components (ECs) such as integrated circuit chips, is size reduced, processed with one or more chemicals to remove base metals, precious metals, and chemicals of concern, and dried to provide a E-waste powder. The E-waste powder, may be used to form an E-waste composite article or material.

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 invention belongs to the technical field of preparation of adsorption separation functional materials, and discloses a controllable preparation method and application of a nano cage type thiourea-resorcinol-formaldehyde resin adsorbent. According to the method, silicon dioxide nanospheres are used as hard templates, thiourea and silicon dioxide are synchronously doped when a phenolic resin layer grows, and finally, the silicon dioxide templates are removed through etching, so that the cross-crumpled resin nanocage microspheres can be controllably prepared. The method not only realizes controllable morphology, but also greatly improves the adsorption performance. The method has important economic value in the field of precious metal recovery, the problems of precious metal resource waste and environmental pollution in electronic waste can be effectively solved, and meanwhile, a new thought is provided for designing a low-cost high-performance adsorbent.

The invention discloses a method for selectively dissolving precious metals based on a haloid aqueous solution, which comprises the following steps: dispersing a to-be-dissolved precious metal-containing material into an aqueous solution containing haloid and potassium peroxymonosulfate (PMS), stirring to react for a certain time without adding a catalyst, and dissolving the precious metals in the material. The method for green recovery of precious metals from electronic wastes has the advantages of mild process, energy saving, environmental protection, low cost, convenient operation and the like, does not use strong acids, toxic cyanides and volatile organic solvents in the whole reaction process, has huge potential in the fields of environmental protection, resource reutilization and the like, and is suitable for industrial production. And a great contribution can be made to transition to low-carbon environment-friendly and resource-saving green economy.

The invention relates to an efficient photovoltaic module metal resource recovery method based on supercritical fluid, and aims to realize environment-friendly recovery of high-value metals such as silver, copper and aluminum in a photovoltaic module. According to the invention, supercritical carbon dioxide (CO2) is adopted as a green solvent, and an organic auxiliary agent and a coordination agent are added, so that the metal dissolving capacity is enhanced. The process comprises the steps of assembly crushing, supercritical extraction, pressure regulation and control, metal deposition and the like, and selective recovery of different metals is achieved by optimizing temperature and pressure conditions. According to the method, waste liquid pollution of a traditional acid-alkali method is avoided, the energy consumption is low, the recovery rate is high, supercritical CO2 can be recycled, and the cost and the environmental influence are reduced. The process can be widely applied to metal resource recovery of photovoltaic modules and other electronic wastes, and an innovative solution is provided for realizing green economy and sustainable development.

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 invention relates to a method and a system for producing an oxidant solution, comprising an electrochemical cell having an anode and a cathode, the method comprising the steps of: (i) supplying a raw electrolyte to a reaction region between the anode and the cathode, the raw electrolyte consisting of sulfate ions (SO42-) and ferrous ions (Fe2 +); (ii) during a run cycle, electrolyzing the feedstock electrolyte to produce an oxidized acid solution comprising peroxydisulfate (S2O8 < 2->) and iron ions (Fe < 3 + >); and (iii) supplying the oxidized acid solution. The oxidant solution is preferably used to leach metals from wastes including electronic wastes and metal-containing ores.

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 invention discloses a method for electrochemical gradient extraction of gold and copper in electronic waste, which comprises the following steps: taking a mixed solution composed of sulfuric acid and copper sulfate as a first electrolyte, taking the electronic waste as an anode, carrying out a first electrolytic reaction, then taking out the degolded electronic waste, and carrying out solid-liquid separation and drying on an anode chamber solution to obtain the gold and copper in the electronic waste. Gold foil is obtained; and taking a mixed solution consisting of sodium chloride, sulfuric acid, copper sulfate and diethylenetriamine pentaacetic acid as a second electrolyte, adding the degolded electronic waste into the anode chamber, carrying out a second electrolytic reaction, then collecting sediments in the cathode chamber, and passivating, cleaning and drying to obtain the copper foil. According to the method, gold in the electronic waste is directly extracted through an electrochemical method, copper is continuously extracted through a slurry electrolysis method, the process of extracting gold and copper from the electronic waste is shortened, the recovery rate of obtained gold and copper is high, and the purity of copper is high; the used medicament is simple, easy to treat and good in environmental benefit.

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 utility model discloses an electronic technology waste product smashing device, and belongs to the field of smashing equipment, the electronic technology waste product smashing device comprises a shell, a feeding port is fixedly connected to the upper portion of the shell, a discharging port is fixedly connected to the lower portion of the shell, a smashing assembly is arranged on the inner surface of the shell, the smashing assembly comprises a supporting seat, and the supporting seat is fixedly connected with the rear portion of the shell; a motor is fixedly connected to the lower portion of the supporting seat, a first rotating shaft is fixedly connected to the output end of the motor through a coupler, the first rotating shaft penetrates through and is rotationally connected with the rear portion of the shell, a second rotating shaft penetrates through and is rotationally connected with the rear portion of the shell, and the front ends of the first rotating shaft and the second rotating shaft are rotationally connected with the inner surface of the shell. According to the electronic waste crushing device, the crushing assembly is arranged to crush the electronic waste, the crushing assembly can crush the electronic waste firstly and then grind the electronic waste into powder, and the effect of conveniently and efficiently crushing the electronic waste is achieved.

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 invention discloses a method for recovering metal from electronic waste or leach residue thereof, the electronic waste or leach residue comprising copper element and one or more lithium compounds, the method comprising: leaching the electronic waste or leach residue with a leaching solution comprising ammonium sulfate in the presence of an oxidizing agent, a leaching solution containing copper ions and lithium ions and solid residues are provided; and separating the leachate and the solid residue.