A dolomite stone crushing and screening plant is a facility designed to process dolomite (chemical formula CaMg(CO₃)₂) into industrial-grade aggregates or powders (e.g., 0-5 mm, 5-12 mm, 12-25 mm). Dolomite occurs naturally in rock or limestone formations. These plants crush, screen, and sometimes grind raw dolomite blocks for use in construction, agriculture, glass, and steel industries.

Working Principle and Stages:

  1. Crushing Stage:

    • Primary Crushing (Jaw Crusher): Reduces raw dolomite blocks (50-100 cm) to 10-20 cm.

    • Secondary Crushing (Cone Crusher or Impact Crusher): Further crushes material into smaller sizes (2-5 cm). Impact crushers are preferred for medium-hard dolomite.

    • Tertiary Crushing (Vertical Shaft Crusher): Produces fine aggregates (0-2 cm) or cubical-shaped particles.

  2. Screening and Classification:

    • Vibrating Screens: Sort crushed material into granular sizes (0-5 mm, 5-12 mm, 12-25 mm).

    • Air Classifiers (For Powder): Generate micron-sized dolomite powder (10-200 µm).

  3. Storage and Transportation:

    • Aggregates are stored in stockpiles or silos. Powdered dolomite is transported via bulk bags or tanker trucks.

Applications:

  • Construction: Concrete and asphalt aggregates, road base material,

  • Agriculture: Soil pH regulator and magnesium source,

  • Glass Industry: Additive to lower melting temperature,

  • Steel Industry: Slag-forming agent in blast furnaces.

Key Equipment:

  • Jaw crusher, cone crusher, vertical shaft crusher, vibrating screens, conveyor belts, dust control systems.