Abstract: The paper summarizes the current comminution theories, studies the interparticle crushing mechanism, analyzes the relation of crushing-grinding cost with the mill feed size, and further demonstrates the great practical significance of “more crushing & less grinding” process.It also describes briefly the structural features and working principles of inertia cone crusher, and illustrates that inertia cone crusher is a new type of energy-saving superfine crushing equipment, which, based on the interparticle comminution theory, is capable to satisfy the process requirement on more crushing and less grinding and

Key words: Interparticle comminution, More crushing &, less grinding, Inertia cone crusher