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AssigneesDowa Mining Co., Ltd., Jiro Hiraishi
InventorsChiaki Izumikawa, Hiroyuki Iwata, Shigehisa Endoh, Hitoshi Ohya
Estimating the term…
To insure that rejects or scraps of composite materials such as printed wiring boards that consist of the mixture of metal and non-metal parts are separated into the metal and non-metal components with good precision so that both components can be recovered as recyclable valuables, the composite materials are broken into pieces by means of a shearing machine or the like and the pieces are thereafter ground with a hammer mill or the like to form a mixed powder consisting of metal and non-metal particles, which mixed powder is then fed continuously on to a belt conveyor inclined at an angle with respect to a line perpendicular to the direction of travel, whereby the metal particles are efficiently separated from the non-metal particles; the recovered metal particles being fed to an electrostatic separator to obtain higher grade of concentration by removing the non-metal inclusions.
A method of separating and recovering valuable metals and non-metals from a composite material that comprises:
A method of separating and recovering valuable metals and non-metals from a composite material that comprises:
Dependencies are inferred from the claim text.