STUDIES ON TRANSFER PROCESSES IN MIXING VESSELS - EFFECT OF GAS ON SOLID-LIQUID HYDRODYNAMICS USING MODIFIED RUSHTON TURBINE AGITATORS

The effect of gas on solid-liquid hydrodynamics in mixing vessels was studied to determine the agitation speed required to just completely s uspend all the particles under gassed conditions, N-jsg and by measure ment of the power consumption associated with this agitation speed. Th e solid particles have a mean diameter between 15-1000 mu m. For their mixing are used standard and modified Rushton turbine agitators posit ioned singly or doubly on the same shaft. The modified turbine with a surface fraction of the perforations equal to 0.353 (TP3) was obtained through increase in the blade height of the Rushton turbine simultane ously with the perforation of the blade surface. The filled surface of the modified blade is equal to the blade surface of the standard Rush ton turbine.