Patents Assigned to Kaiser Aluminum & Chemical Corp.
  • Patent number: 6082659
    Abstract: Apparatus and a process for the high-speed coiling of an aluminum strip. The high speed coiling can be accomplished throughout a continuous casting process without slowing the coiling as the present invention enables the transfer of the moving strip from one coil to an empty mandrel without slowing the line speed. Since line speeds can be approximately 3600 feet per minute, this represents an advance in process technology. Generally, the transfer of the moving strip is accomplished using a very high speed knife, and a belt wrapper. The moving strip is accumulated on one mandrel to form a coil, the coil is moved away from the knife and a second mandrel is brought into position. The knife is positioned at the moving aluminum strip and accelerated to cut the strip and deflect it to a tucking roll with a moving belt. The moving strip is forced around the second mandrel and starts to wind to form a coil. The completed coil is removed and the process is repeated.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: July 4, 2000
    Assignee: Kaiser Aluminum & Chemical Corp.
    Inventors: Subbiah Sankaran, Daniel P. Ranly
  • Patent number: 5931772
    Abstract: A composition particularly useful in solidifying liquid wastes for disposal in landfills, including, for example, liquid industrial wastes. The preferred embodiment of the present invention contemplates a composition primarily composed of bauxite tailings that remain after alumina extraction, also known as "red mud". The tailings are dewatered, dried to a low moisture content, sized to an optimal particulate size, and then applied to the liquid waste. The addition of a small amount of pozzolanic material can improve the handling and solidification characteristics of the composition under certain situations, and is provided in an alternative composition.
    Type: Grant
    Filed: October 30, 1996
    Date of Patent: August 3, 1999
    Assignee: Kaiser Aluminum & Chemical Corp.
    Inventors: David B. Kirkpatrick, A. Dyer Lafleur
  • Patent number: 5655593
    Abstract: A method for manufacturing aluminum alloy sheet including a continuous, in-line sequence of forming a strip of aluminum alloy and rolling the strip to reduce its thickness and to cool the strip sufficiently rapidly that precipitation of alloying elements is substantially minimized.
    Type: Grant
    Filed: September 18, 1995
    Date of Patent: August 12, 1997
    Assignee: Kaiser Aluminum & Chemical Corp.
    Inventors: Gavin F. Wyatt-Mair, Edwin James Westerman