Separation of non-magnetic conductive metals

B - Operations – Transporting – 03 – C

Patent

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209/87

B03C 1/00 (2006.01)

Patent

CA 1051384

ABSTRACT OF THE DISCLOSURE The invention provides a method of separating non-magnetic conductive metal components from a mixture of non-magnetic conductive metal components and non-magnetic non-conductive material, including the steps of: generating a travelling electromagnetic wave from a linear motor stator with a frequency from about 400 to about 800 cycles per second; passing a stream of a mixture of non-magnetic conductive metal components of a size at least about 1/4 inch and non-magnetic non-conductive material through said travelling wave along the face of the linear motor stator on a moving belt spacing the mixture from said stator, with the direction of the linear motor travelling wave generally perpendicular to the direction of the stream of mixture, inducing eddy currents in the conductive metal components of the mixture producing forces acting on the conductive metal components in the direction of the travelling wave and moving conductive metal components from the stream along paths parallel to the stator face at a velocity substantially less than the velocity of the travelling wave, and collecting the components which are moved by the forces acting in the direction of the travelling wave. There is also provided an apparatus for carrying out the method. The invention offers advantages in the separation of non-magnetic, conductive metals from a mix- ture containing such metals together with non-magnetic, non-conductive metals, organic materials and non-metallic inorganic materials.

221671

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