Daryo toshi

About river pebble

River pebble is a naturally rounded stone valued for its high hardness, strength and wear resistance. It is widely processed into quality aggregate and manufactured sand for concrete, roads, railways, bridges and hydraulic works.

Typical reference properties include Mohs hardness of 6–8, density of about 2.60–2.75 t/m³ and compressive strength of approximately 120–300 MPa. Actual properties must be confirmed from the project material.

Recommended process

Vibrating feeder → Jaw crusher → Cone crusher → Vibrating screen → Optional VSI crusher → Optional sand washer → Finished products

The jaw crusher performs primary reduction of large pebbles. Because river pebble is abrasive, a cone crusher is normally preferred for secondary and tertiary crushing. The screen separates saleable fractions and returns oversize in a closed circuit.

A VSI crusher can be added when a more cubical aggregate or 0–5 mm manufactured sand is required. Washing is useful when the feed contains clay or excess fines; the project must also provide water recycling and settling capacity.

Recommended equipment

Vibrating feeder — stable feeding

Jaw crusher — primary crushing

Hydraulic cone crusher — efficient secondary crushing of abrasive stone

VSI crusher — aggregate shaping and manufactured sand

Vibrating screen — accurate fraction separation

Sand washer — removal of clay and excess fines

Belt conveyors — continuous material transfer

Typical products

0–5 mm — manufactured sand

5–10 mm — fine aggregate

10–20 mm — concrete and asphalt aggregate

20–40 mm — road base and infrastructure aggregate

Important selection factors

Confirm maximum feed size, actual hardness and abrasiveness, moisture, clay and natural-fines content, required capacity, finished fractions and the availability of water. Wear-part selection and closed-circuit screening are especially important for this abrasive material.

Request a project solution

Send the required capacity, feed size, product sizes and site conditions. Tanker will prepare a suitable crushing, screening and optional washing configuration.