| 摘要 |
PROBLEM TO BE SOLVED: To securely and finely separate an object matter moving in a cylinder in the state where a proper particle diameter is kept unchanged. SOLUTION: A dam member 30 is disposed in a rotary cylinder 22 of a carbonizing furnace 20 substantially at the central position longitudinally thereof. The dam member 30 comprises a pair of annular plates 32, 34 that is set to an outer diameter shorter by a predetermined length than an inner diameter of the rotary cylinder 22 and is separated by a predetermined distance in the axial direction thereof, and a plurality of scraping plates 36 trained between both annular plates 32, 34 and separated by a predetermined interval peripherally thereof. An auxiliary annular plate 38 having a smaller diameter than that of the annular plate 34 is disposed through the scraping plates 36. A plurality of support members 40 separated by a predetermined interval peripherally thereof are fixed with a rear surface of the auxiliary annular plate 38 at their one ends, the other ends of which members 40 are disposed and fixed to a downstream end of the rotary cylinder 22, whereby the dam member 30 is disposed in the rotary cylinder 22 so as to be rotated integrally with the latter cylinder.
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