Tertiary Crushers

Tertiary Crushers are high-performance rotor crushers designed to process medium-hard, slightly abrasive materials coming from secondary crushers in crushing-screening plants to produce high-throughput sand in the 0-5 mm range. Thanks to their high-speed rotor design and specialized crushing chamber, they specialize in producing the cubic and fine aggregates required for concrete and asphalt production.

Working Principle: High Speed and Effective Crushing

The operating principle of tertiary crushers is based on the conversion of high kinetic energy into an effective crushing force:

• Material enters the crusher's feed port and strikes the paddles on the high-speed rotating rotor. This initial, powerful impact initiates the material's fragmentation.
• Material hurtling at high speeds strikes specially designed crushing plates, called pendulums, located on the crusher's inner walls. This impact causes the material to break again.
• This "blow and impact" cycle, repeated many times within the crushing chamber, ensures that the material reaches the desired fine size and cubic form.
• The ability of the rotor to rotate in both directions allows wear on both surfaces of the tracks, extending component life and reducing maintenance costs.
• The final product size is controlled by easily adjusting the distance between the rotor and the pendulums with a hydraulic system.

Advantages and Application Areas

Tertiary crushers offer high efficiency and low operating costs, especially in sand and gravel production.

• Highly Fine Material: Thanks to its high rotation speed, it has the capacity to convert the fed material into sand of 0-5 mm size at a high rate.
• Perfect Cubicity: The impact crushing principle results in a stress-reduced, high-cubic ratio final product. This directly improves the quality of concrete and asphalt.
• Double Rotor: The ability of the rotor to rotate in both directions doubles the wear life of the tracks and extends maintenance intervals.
• Easy Maintenance and Adjustment: The body structure, which can be opened with hydraulic pistons, makes pallet and liner changes quick and safe. Product size adjustments are also easily made via the hydraulic system.
• Low Operating Cost: Thanks to optimized wear parts and efficient crushing mechanism, operating and maintenance costs are low.

STS Global Makina tertiary crushers are an ideal and economical solution for facilities that want to produce high quality sand and gravel from medium hard materials such as limestone, dolomite and river material.