Apparatus for removing oversize from the hot material discharged from a rotary kiln used to produce sponge iron by a direct reduction of iron oxide containing materials

In an apparatus for removing oversize from hot material discharged from a rotary kiln used to produce sponge iron by a direct reduction of iron oxide containing materials, the apparatus comprising a stationary kiln head which surrounds and is gas-tightly sealed to a discharge end of a rotary kiln, an oversize discharge device on the kiln head, and a discharge device for the particles which have passed through a sieve-like separator, the improvement wherein:

• the sieve-like separator comprises a rigid, inclined grate, means for cooling the grate and further comprising:
• a collecting container for collecting oversize mounted on the kiln head and having a gate valve at the discharge end thereof, an outer container surrounding and gas-tightly sealed to the collecting container and having a gas-tight flap valve, a transport container, a fitting for a gas-tight connection between the collecting container and the transport container, wherein the kiln head is configured to form at least one buffer bin under the grate for the particles falling through the grate, a batching bin under the buffer bin and having a gas-tight upper shutoff valve, a second transport container, the batching bin having:
• on its discharge side a gas-tight lower shutoff valve with a fitting for a gas-tight connection to the second transport container, and wherein the volume of the batching bin is smaller than the volume of the second transport container.