Shag'al

About gravel

Natural gravel is a mixture of rounded or irregular fragments created by weathering of different rocks. Its composition, hardness and abrasiveness vary by deposit.

Gravel may contain usable finished sizes together with sand, clay and oversize stone. Pre-screening before crushing can remove saleable material and reduce energy use and wear by sending only oversize to the crushers.

Recommended process

Vibrating feeder → Pre-screening → Crushing as required → Final screening → Washing → Finished fractions

The pre-screen removes fine and already usable material. Hard, abrasive oversize is normally processed with jaw and cone crushers; softer material may be treated with jaw and impact crushers. The final screen separates products, while washing reduces clay, dust and excess fines where required.

Recommended equipment

Vibrating feeder — controlled feeding

Pre-screen — bypass of usable fine fractions

Jaw crusher — primary crushing of oversize gravel

Cone crusher — hard and abrasive material

Impact crusher — softer material and particle shaping

Vibrating screen — accurate fraction separation

Sand washer — reduction of clay and excess fines

Belt conveyors — continuous transfer

Typical products

0–5 mm — natural or manufactured sand

5–10 mm — fine aggregate

10–20 mm — concrete and asphalt aggregate

20–40 mm — road base and general construction material

Important selection factors

Determine the particle-size distribution, maximum size, hardness, clay content and proportion of natural sand before selecting equipment. If washing is required, include water supply, settling ponds and water recycling in the project.

Request a project solution

Send us the required capacity, feed grading, clay and sand content, product fractions and project location. Tanker will prepare the appropriate screening, crushing and washing circuit.