The roller crusher has widely application in the industries of mining, building materials, chemical industry, metallurgy, etc. The roller crusher can crush materials with middle hardness or less than middle hardness into secondary or fine granularity, such as crushing mineral, rocks, coke, coal, slag, scoria, and fire-proof material etc. Working Principle of JOYAL Roller Crusher Usage and Application of Roller Crusher Main Specifications Of Roller Crusher