Apparatus for charging solid fuel to rotary kilns

  • US 4,930,965 A
  • Filed: 11/23/1988
  • Issued: 06/05/1990
  • Est. Priority Date: 11/23/1988
  • Status: Expired due to Term
First Claim
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1. An apparatus for charging a solid or containerized fuel comprising a combustible material through a wall of a rotating kiln cylinder containing a mineral material, said apparatus comprising:

  • a port in the wall of the kiln cylinder, a drop tube extending from the port and into the kiln cylinder a distance greater than the maximum depth of mineral material in the cylinder,a closure for the port and means for actuating the closure between a port-opened position and a port-closed position at predetermined times during rotation of the kiln cylinder, said closure being sized relative to the port and positioned when in the port-closed position to allow clearance for air flow around the closure into the kiln;

    means for receiving the fuel and positioning same for passage through the port, andmeans for applying a force to said fuel sufficient to move said fuel from the receiving and positioning means through the port and drop tube and into the kiln cylinder.

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