Abstract
The pneumatic conveying dryer which was mentioned in the previous report, was found of practical use from the results of basic and industrial applied experiments.
From the results of the experiments, the optimum operating conditions were obtained.
The test material could be dried from 2% to 0.2% water content under the following operating conditions; feed ratio below 1.0, air temperature above 100°C, air velocity over 40m/sec. The power consumption and dried material temperature was 60KWH/T and aboye 50°C respectively.
Size reduction of crystals occured noticeably near-by the inlet while it was considered regligible when air velocity was less than about 20m/sec.
For the length of the drying column, five meters was found enough. Adhesion of impurities inside of drying column was little, when the water contents of materials dried were less than 2% and impurities below 0.8%.
