Apparatus and method for treating a dust -, powders - or granulatfoermigen good with a gas.

摘要

The treatment of the product takes place in a swirl chamber (4, 6, 21) with a tangential inlet opening (9) for the gas and with a separate inlet opening (15) for the product as well as with an outlet opening (5) for the gas. To control the dwell time of the product in the swirl chamber (4, 6, 21), it is envisaged that the swirl chamber housing is provided with, lying opposite the outlet opening (5), a peripheral annular gap (23), which is concentric with the swirl-chamber axis, for the inlet of a further part flow of the treatment gas and for the outlet of the product. As a result, higher treatment speeds with improved heat and material transfer ratios are made possible. Thus, and together with the increased flow speed, considerably smaller pieces of apparatus can be built than previously. IMAGE