| 摘要 |
The present invention relates to a cooler (2) for a rotary drum kiln (1). The cooler comprises two cylindrical housings disposed one inside the other (6, 7), surrounding the kiln and rotating with it, which housings are mounted at the discharge end of the kiln concentrically with the kiln and between which housings an annular space (8) is formed. The housings are attached to each other by means of longitudinal radial partition walls (16), and the inner cylindrical housing (6) is attached at its ends to the kiln. The annular space (8) has a feeding inlet (11) communicating with the kiln for leading the hot material from the kiln into the cooler and a discharge outlet for discharging the cooled material. The material to be cooled flows counter-currently in relation to the cooling gas flow. The annular space (8) comprises at least two parts (12, 13) so that each of the cylindrical housings comprise at least two cylinders (6a, 6b; 7a, 7b), in the direction of the longitudinal axis of the kiln sequential, connected to each other. The cylindrical housing (6b) comprises means (24) for attaching the cooler to the kiln essentially at the conjunction point (20) of the sequential cylinders (6a, 6b; 7a, 7b), too.
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