1. Why Basalt Demands Special Crusher Selection Basalt is a dense volcanic extrusive rock with a Mohs hardness of 5 to 7, compressive strength reaching 100 to 300 MPa, and SiO2 content typically between 45% and 52%. The combination of high hardness, high abrasiveness, and high toughness makes basalt one of the most challenging materials to crush in the aggregate industry. Choosing the wrong crusher leads to rapidly consumed wear parts, frequent downtime for component replacement, and operating c...

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