The plate falling film evaporator has advantages of high capacity, less steam consumption and high return water ratio but is not suitable for evaporation of solution with crystal liberation.

The scabbing cause and preventable measures of plate model dropping film evaporator;

Energy saving effect analysing of plate model dropping film evaporator;

Disk evaporator with out flow reducing membrane is a new equipment in alumina industry to replace the parallel piping evaporator,but the material of the equipment is under test.

Investigation on reasons of the condensed water alkalinity exceeding standard in the tube type falling-film evaporator;