METHOD FOR DRYING OF THERMOLABILE MATERIALS Russian patent published in 2016 - IPC A23L3/40 F26B3/30 

FIELD: metallurgy.

SUBSTANCE: materials are washed, milled, and laid in layer upon gas-permeable trays installed in vented chamber. Product layer with height 10 to 30 mm is heated by double-sided continuous infrared radiation at wavelength 1.5 to 3.0 mcm, under heat flux density 2.8 to 3.1 kW/m² till surface temperature achieves 52±1 °C or 55±1 °C during 10 to 16 or 8 to 12 minutes, respectively. Then materials are cooled to temperature 41±1 °C by means of periodic longitudinal air blowing of duration 0.3 minutes at rate of 0.7 to 1 m/s.

EFFECT: invention provides considerable reduction of power consumption and process time.

1 cl, 2 ex