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3658results about "Electronic waste recycling" patented technology

Encapsulant layer for photovoltaic module, photovoltaic module and method for manufacturing regenerated photovoltaic cell and regenerated transparent front face substrate

The main object of the present invention is to provide an encapsulant layer for photovoltaic module used in a photovoltaic module enabling recovering and recycling or reusing of reutilizeable resources such as a transparent front face substrate and photovoltaic cell and the like among constituents of a photovoltaic module, and to provide a method for manufacturing a regenerated photovoltaic cell and a regenerated transparent front face substrate. The present invention attains the above mentioned object by providing an encapsulant layer for photovoltaic module, wherein the encapsulant layer for photovoltaic module is used in a photovoltaic module formed by laminating: a transparent front face substrate; a photovoltaic cell carrying a wiring electrode and a takeoff electrode, and an encapsulant layer is placed on at least one surface; and a rear face protecting sheet, in this order, comprising a separable layer formed mainly of a thermoplastic resin (a) having a peeling strength from the transparent front face substrate, measured in a 180° peeling test under a 25° C. atmosphere, in a range of 1 N / 15 mm width to 150 N / 15 mm width, (b) having a Vicat softening temperature, measured based on JIS standard K7206, in a range of 60° C. to 128° C., and (c) having a melt mass flow rate, measured based on JIS standard K7210, in a range of 0.1 g / 10 min to 50 g / 10 min, and wherein (d) an output maintenance factor of photoelectronic power, before and after a test measured based on a standard, of the photovoltaic module using the encapsulant layer is in a range of 80% to 100%.
Owner:DAI NIPPON PRINTING CO LTD

Method and device for disassembling electronic components from waste printed circuit boards and recovering soldering tin

The invention provides a method and a device for disassembling electronic components from waste printed circuit boards (PCB) and recovering soldering tin. The method comprises the following steps: placing the PCB with the electronic components in a temperature-setting tin-melting furnace in a manner that the PCB faces up; grabbing larger electronic components manually and feeding the PCB containing smaller electronic components and soldering tin to the conveyor belt after the soldering tin is melted by heat, wherein, an automatic-control electrical heating and warming device is additionally arranged at the bottom of the conveyor belt; pinning down the PCB by a hob and forwarding the PCB, and eliminating the electronic components and the soldering tin by a scraper arranged on the rear side of the hob, so that the soldering tin can be separated from the electronic components on the PCB through the successive coordinating operation of hobs and scrapers in a plurality of groups; recovering the soldering tin by a material-receiving pot; and subjecting the peculiar smell and harmful gases generated by heating the PCB to negative-pressure air draft and absorption treatment and discharging the gases until the discharge standards are met. The invention is suitable for treating PCBs with various thicknesses and recovering electronic components of various types and models; the invention has the advantages of high speed, high efficiency, no pollution, high operability and advanced technology; and the invention contains a novel and environment-friendly method and an equipment for disassembling the waste printed circuit boards and recovering treatment of soldering tin.
Owner:HUNAN VARY TECH

Automatic stripping and recycling device for waste cable

The invention discloses an automatic stripping and recycling device for waste cables. The automatic stripping and recycling device belongs to the technical field of cable stripping equipment, and comprise a workbench, wherein the top part of the workbench is provided with a cable stripping mechanism, a cable straightening mechanism and a cable cutting mechanism, the cable stripping mechanism comprises a cable limiting assembly, a transverse cutting assembly and a waste sheath winding assembly, the cable straightening mechanism comprises a transverse straightening assembly and a longitudinal straight-pressing assembly, the left end of the workbench is provided with a left fixing frame and an unwinding roller, and the right end of the workbench is provided with a right fixing frame and a material collecting roller. The automatic stripping and recycling device can strip cable sheathes of different diameters by means of the cable stripping mechanism, so that the sheathes of the cables aredivided into two sections and the winding operation can be automatically completed by means of the waste sheath winding assembly, and the cable straightening mechanism can automatically straighteningthe passing cables, so as to avoid the transverse cutting assembly from cutting bent cables and damaging the cables.
Owner:ANHUI HUATENG AGRI TECH CO LTD

Recovery method of waste circuit board

The invention provides a method for recovering waste circuit boards. The method comprises the following: 1. a step of heating and centrifugally separating, which is to put the waste circuit boards in an oil bath, heat to melt solder and pass the waste circuit boards with the solder melted through a centrifugal machine so as to efficiently separate the solder from the waste printed circuit boards; 2. a step of cracking in vacuum, which is to put waste circuit board substrates with the solder removed, as well as an electron component in a vacuum cracking device, heat for thermal cracking, collect thermal-cracking volatile products and condense the volatile products into fluid oil; and 3. a step of collecting solid matter after vacuum cracking, which is to classify and collect the electron component and the circuit board substrates after thermal cracking, so as to recover precious metals and other valuable metals of the electron component, as well as copper foil, glass fiber and other substances on the circuit board substrates. The method performs treatment by stages according to the structural characteristics of the waste circuit boards, has the advantages of simplicity, no pollution, low cost, high efficiency and high rate of recovering waste resources of the waste circuit boards, and is suitable for industrial application and the large-scale recovery of the waste circuit boards.
Owner:CENT SOUTH UNIV

Harmless treatment and resource recovery method and harmless treatment and resource recovery equipment for waste circuit board with components

InactiveCN102962242AScientific recycling processReasonable recycling processSolid waste disposalElectronic waste recyclingActivated carbonEddy current separator
The invention relates to harmless treatment and resource recovery method and harmless treatment and resource recovery equipment for waste circuit boards with components. The equipment comprises a first-level conveyor belt, a compound crusher, a two-level conveyor belt, a permanent magnet deironing separator, an eddy current separator, a three-level conveyor belt, a two-level hammer crusher, a four-level conveyor belt, a three-level hammer flake type crusher, a material conveying fan, a vibrating separator, a cyclone separator, a bag type dust collector, a draught fan and activated carbon adsorption tower. The method comprises the steps that: crushing the waste circuit boards with components into fragments in the compound crusher, separating out irons through the permanent magnet deironing separator, and separating out copper, aluminum and other nonferrous metals on a belt of the eddy-current separator; entering the two-level hammer crusher for further dissociation and crushing, and separating out irons; and driving the balance of materials to enter the three-level hammer flake type crusher, and fully crushing the materials into powder with 60-100 meshes to the vibrating separator. The method and equipment have the advantages that the investment is few, the energy consumption is low, the running cost is low, and the process and the operation are simple, and the production efficiency can be greatly improved and no secondary pollution is caused.
Owner:汨罗万容电子废弃物处理有限公司

Method and device for high-efficiency recovery of waste circuit boards in vacuum

The invention discloses a method and a device for high-efficiency recovery of waste circuit boards in vacuum. The method comprises the following steps: the waste circuit board is arranged in a vacuum vessel and heated for pyrolysis, wherein, most of pyrolysis volatile matter is cooled and liquefied into liquid oil, and the rest is taken into a gas collector; a centrifuge device separates soldering tin from the circuit board during the pyrolysis; substrates and electronic components of the pyrolyzed circuit board are assorted and collected to be further separated and recovered. The device comprises a compound vacuum pyrolysis and centrifuge device, a cold trap, the gas collector and a vacuum pump. The vacuum vessel of the compound vacuum pyrolysis and centrifuge device is sequentially connected with the cold trap, the vacuum pump and the gas collector by pipelines. The device has the advantages of simple process, no pollution, low cost, high efficiency, and high recovery ratio of waste resources of the waste circuit boards. The soldering tin and organic substances of the waste circuit boards are synchronously recovered, and the soldering tin is separated from other metals at a high efficiency, thus creating a good condition for high-efficiency recovery of other metals. The method and the device are suitable for industrialized application and can help achieve large-scale recovery of the waste circuit boards.
Owner:CENT SOUTH UNIV
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