Ohaktosh

About limestone

Limestone is a sedimentary rock composed mainly of calcium carbonate. It is widely processed into concrete and asphalt aggregate, road-base material, cement and lime feedstock, and fine mineral powder.

Limestone is generally easier to crush than granite or basalt, so an impact crusher can provide a high reduction ratio and a well-shaped product. However, hardness, silica content, moisture and clay vary by deposit. Final equipment selection must be based on a sample analysis and the required products.

Recommended aggregate process

Vibrating feeder → Jaw crusher → Impact crusher → Vibrating screen → Finished fractions

The feeder supplies material steadily and can remove fine contamination before crushing. The jaw crusher handles large feed, the impact crusher performs secondary reduction, and the screen separates the required fractions. Oversize material returns to the impact crusher in a closed circuit.

Limestone-powder process

Primary crushing → Storage bin → Feeder → Raymond mill → Classification → Powder collection

The mill and classifier are selected according to the required fineness and the chemical composition of the limestone.

Recommended equipment

Vibrating feeder — controlled feeding and preliminary separation

Jaw crusher — primary crushing

Impact crusher — secondary crushing and particle shaping

Hammer crusher — simplified single-stage processing where conditions allow

VSI crusher — manufactured sand and improved aggregate shape

Vibrating screen — separation into finished sizes

Sand washer — reduction of clay and excess fines

Raymond mill — limestone-powder production

Belt conveyors — continuous transfer between machines

Typical products

0–5 mm — manufactured sand and fine material

5–10 mm — fine concrete and asphalt aggregate

10–20 mm — concrete, asphalt and precast products

20–40 mm — road base and general construction

Mineral powder — cement, lime and other industrial uses

Important selection factors

Confirm hardness and silica content, maximum feed size, moisture and clay content, required hourly capacity, finished fractions, dry or wet processing, chemical requirements and dust-control rules. High-silica or unusually hard limestone may make a cone crusher more economical than an impact crusher.

Request a project solution

Send us the required capacity, maximum feed size, finished fractions, moisture level and project location. Tanker will prepare a suitable process flow and equipment configuration.