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Method and apparatus for sorting materials according to relative composition

  • US 7,564,943 B2
  • Filed: 08/03/2006
  • Issued: 07/21/2009
  • Est. Priority Date: 03/01/2004
  • Status: Active Grant
First Claim
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1. A sorting device to distinguish materials of differing relative average atomic numbers, comprising:

  • an X-ray tube, wherein the X-ray tube is in a fixed position;

    a first multi-energy detector having a photon counting rate in the range of from about 1 million counts per second to about 10 million counts per second, positioned in a fixed position to receive x-rays from the X-ray tube;

    a microprocessor operationally connected to the first multi-energy detector;

    an ejector controller operationally connected to the microprocessor; and

    at least one ejector attached to the ejector controller.

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