Patents Assigned to Institute of Chemical Technology (PlasTech)
  • Patent number: 5882581
    Abstract: Apparatus for the continuous heating and melting of a solid mixed waste bearing radioactive and hazardous materials to form separate metallic, slag and gaseous phases for producing compact forms of the waste material to facilitate disposal includes a copper split water-cooled (cold) crucible as a reaction vessel for receiving the waste material. The waste material is heated by means of the combination oaf plasma torch directed into the open upper portion of the cold crucible and an electromagnetic flux produced by induction coils disposed about the crucible which is transparent to electromagnetic fields. A metallic phase of the waste material is formed in a lower portion of the crucible and is removed in the form of a compact ingot suitable for recycling and further processing. A glass-like, non-metallic slag phase containing radioactive elements is also formed in the crucible and flows out of the open upper portion of the crucible into a slag ingot mold for disposal.
    Type: Grant
    Filed: August 14, 1997
    Date of Patent: March 16, 1999
    Assignee: Institute of Chemical Technology (PlasTech)
    Inventors: Vitaly T. Gotovchikov, Alexander V. Ivanov, Eugene A. Filippov
  • Patent number: 5750822
    Abstract: Apparatus for the continuous heating and melting of a solid mixed waste bearing radioactive and hazardous materials to form separate metallic, slag and gaseous phases for producing compact forms of the waste material to facilitate disposal includes a copper split water-cooled (cold) crucible as a reaction vessel for receiving the waste material. The waste material is heated by means of the combination of a plasma torch directed into the open upper portion of the cold crucible and an electromagnetic flux produced by induction coils disposed about the crucible which is transparent to electromagnetic fields. A metallic phase of the waste material is formed in a lower portion of the crucible and is removed in the form of a compact ingot suitable for recycling and further processing. A glass-like, non-metallic slag phase containing radioactive elements is also formed in the crucible and flows out of the open upper portion of the crucible into a slag ingot mold for disposal.
    Type: Grant
    Filed: November 13, 1995
    Date of Patent: May 12, 1998
    Assignee: Institute of Chemical Technology (PlasTech)
    Inventors: Vitaly T. Gotovchikov, Alexander V. Ivanov, Eugene A. Filippov