... and medium-low silica materials. Highly abrasive materials include sandstone, gravel, granite, basalt, glass, refractory rejects, cement clinker and ... dolomite, bauxite, shales, gypsum, coal and others.impact crusher is widely used in highway construction, water conservancy project and ... are with cubical shapeWhen the hard rock counter-attacking crusher works, the electric motor drives the rotor where ...