Patent ID: 7036758

Claim:
A cone crusher comprising: a stationary liner, wherein a substantially vertical axis passes through the stationary liner; a mounting base as a movable element which is movable about the substantially vertical axis, wherein the mounting base is capable of approaching an inner periphery of said stationary liner and separating therefrom; and a mantle liner fixed to said mounting base and positioned relative to said stationary liner to form a crushing chamber therebetween, said crushing chamber having an inlet and an outlet, wherein a crush material is sequentially crushed in first, second and third portions of the crushing chamber, thereby defining a direction of movement of said crush material from said inlet of said crushing chamber to said outlet of said crushing chamber, wherein said liner comprises: a first area surface at said first portion of said crushing chamber and having a length of T to √2T in the direction of movement of the crush material from the inlet of said crushing chamber to the outlet thereof, said first area surface facing said crushing chamber, wherein T is a predetermined value; a second area surface facing said crushing chamber at said second portion of said crushing chamber; and a third area surface facing said crushing chamber at said third portion of said crushing chamber, whereby said first to third area surfaces are sequentially arranged in the direction of movement of the crush material from the inlet of said crushing chamber to an outlet thereof, and wherein said mantle liner comprises: a first tapered surface, wherein a length of a perpendicular line from said first area surface to said first tapered surface at a side of said first portion of said crushing chamber closest to said inlet is greater than T, a cross angle of said first tapered surface is less than 20° with respect to said first area surface, and an inclination angle of said first tapered surface is greater than 60° relative to a horizontal plane; a second tapered surface, wherein a length of a perpendicular line from said second area surface to said second tapered surface at a side of said second portion of said crushing chamber closest to said inlet is greater than 0.5T and a cross angle of said second tapered surface is 5° to 10° with respect to said second area surface; and a third tapered surface having an inclination angle of 45° to 50° relative to the horizontal plane; whereby said first to third tapered surfaces are sequentially arranged from the inlet of said crushing chamber in the direction of movement.