Basalt and diabase have higher hardness and silicon content, which belong to materials that are hard to crush in actual crushing operations or have higher crushing costs. More generally, basalt and diabase are hard and tough materials.
Impact crusher can deal with the coarse, medium and fine materials (granite, limestone, concrete, etc.) which have less than 500mm side length and less than 350MPa compressive strength.
Roll crusher mainly crushes materials by the mutual extrusion between two rollers, so the roller is its main component. It is applied to the crushing of medium hard materials in cement industries.