METHOD FOR THE DRYING OF A POWDERY, GRANULAR, CHIP-FORMED OR EQUIVALENT MATERIAL

摘要

The material (B) to be dried is, at least for the time of the drying, mixed with a magnetic material (A), and the drying of the material (B) to be dried is carried out in a mixture of the said material (B) to be dried and of the said magnetic material (A) by passing heat into the mixture of the said materials (A) and (B). After the drying, the magnetic material (A) and the dried material (B') are separated from each other, and the dried material (B') is passed further to its purpose of use and the magnetic material (A) is recirculated to the mixture of the material (B) to be dried and the magnetic material (A). The drying is performed by means of the fluidized bed principle so that the mixture of the material (B) to be dried and of the magnetic material (A) is fluidized by means of the drying gas (C). Superheated water vapour is used advantageously as the drying gas (C).