As a summary can be stated, that deliquoring of filter cakes is an complex issue. At
first the knowledge about the physical fundamentals of cake deliquoring is necessary
but in addition many random conditions have to be considered to find an economical,
effective and sustainable solution for the separation problem. This means, that not
only the whole process chain from slurry production to the final cake removal has to
be taken into account, but in addition one has to check which apparatus fulfills all
preconditions optimally. Recent developments for several cake filter apparatuses
have improved the state of the art remarkably especially with focus on the cake
deliquoring. Further ideas, which are investigated in recent and actual research
projects could lead to further progress. Theory provides many approaches from
relatively simple to highly sophisticated concepts for the explanation of the relevant
filter cake deliquoring phenomena. In this review the focus is not on an overview of
all these concepts but practically proved models will be taken to illustrate the
correlation of the relevant influencing parameters.