Structure description

Research methods

Findings

Layered structure

Analyzed the change of mechanical characteristics for cakes

The physical model of the layered structure of the filter cake is established

grid structure

Double layer theory

The structure of filter cake is a kind of space grid structure

pore structure

Freeze drying technique and scanning electron microscope

The filter cake shows a honeycomb pore structure

Structure fractal

Fractal theory

The cake structure is a piecewise Sierprinski fractal