JAW CRUSHER, MINERAL MATERIAL PROCESSING PLANT AND METHOD FOR PROCESSING MINERAL MATERIAL

摘要

A jaw crusher, a mineral material processing plant and a method for processing mineral material. The jaw crusher (100) comprises a fixed jaw and a movable jaw for forming a crushing chamber (3) therebetween which is open at the top, the fixed jaw comprising a first wear part (1 ) mounted thereto and the movable jaw comprising a pitman (4) and a second wear part (2) mounted thereto; wherein the pitman (4) is rotatably mounted to a first eccentric shaft (8). The pitman (4) is further rotatably mounted to second eccentric shaft 9 configured to guide the stroke of the movable jaw to create a movement pattern with a substantially linear crushing stroke, wherein the eccentricity of the second eccentric shaft (9) is larger than that of the first eccentric shaft.