FIELD: heat treatment of loose materials in chemical industry, metallurgy, construction industry, food-stuffing and other industries. SUBSTANCE: apparatus has revolving drum 1 with cylindrical insert 7 arranged coaxially in it; ferrules 6 and 10 are mounted at inlet and outlet of insert 7; diameter of first (in way of motion of material) ferrule is equal to 0.46-0.81 of drum diameter and diameter of second ferrule is equal to 0.60-0.91 of diameter of cylindrical insert 7. EFFECT: enhanced efficiency. 2 cl, 3 dwg, 2 tbl
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Authors
Dates
1997-01-20—Published
1992-04-15—Filed