| 摘要 |
The invention relates to a procedure and an installation for the temperature control of a substance in powder and/or pellet form that is transported through a bulk conveying system (2) with at least one closed part. During the transport of the substance in the closed part (3) of the conveyor, in particular by means of a rotating spiral, a predetermined amount of cryogenic liquid is injected into this part of the conveyor, preferably liquid carbon dioxidc. This allows a simple and flexible temperature control, spccifically for powdery substances for the preparation of doughs. <IMAGE> |
