Disposal of waste tires
AssigneeBlue Circle Industries Limited
InventorLawrence Paul Evans
Life of this patent
Estimating the term…
Abstract
Waste tires are disposed of in a cement-manufacturing or other mineral-burning process by introducing the tires into the hot gas stream at at least one point between the mineral-inlet end of a rotary kiln and the lowermost cyclone of an associated preheater system, e.g. into the gas stream within a precalciner vessel or riser duct, the tires being maintained in contact with the hot gas for a sufficient period to effect at least partial combustion of the tires. As an alternative, the tires may be introduced into a Lepol grate preheater.
Claims23
An apparatus for disposing of tires in a mineral-processing kiln system in which a rotary kiln is associated with a preheater section, said apparatus including a gas-conveyer for conveying hot gas from a mineral-inlet end of the rotary kiln to the cyclone, said gas conveyer having an inlet through which tires may be fed and a door for selectively opening and closing the inlet, a support for supporting at least one tire within the gas-conveyor such that the tire so supported will be in contact with hot gas within the gas-conveyor during operation, and a feeder for feeding tires through the inlet, when open, and onto the said support.
An apparatus for disposing of tires in a mineral-processing kiln system in which a rotary kiln is associated with a preheater section in which the preheater section comprises a Lepol grate preheater having a traveling grate and a tire support therein, the Lepol grate preheater further comprising an inlet through which tires may be fed, a door for selectively opening and closing the inlet and a feeder for feeding tires though the inlet, when open, and onto the said tire support.
An apparatus for disposing of tires in a mineral-processing kiln system in which a rotary kiln is associated with a preheater section, said preheater having a support for supporting at least one tire within the preheater section and a feeder for feeding tires to the support, the preheater section comprising at least one heat-exchange duct, said apparatus including a gas-conveyer for conveying hot gas from a mineral-inlet end of the rotary kiln to the cyclone, said gas conveyer having an inlet through which tires may be fed;
- a door reciprocally movable from an open position to a closed position;
- a feeder for feeding tires through said door in said open position onto said support and a seal box enclosing said feeder and said door, said seal box minimizing the escape of hot air in both said open position and said closed position.
Dependencies are inferred from the claim text.