Cone Crusher

What is the Cone Crusher?

A cone crusher reduces hard material by squeezing it in a gyrating chamber. It offers high throughput and an adjustable closed side setting, and suits larger laboratory and pilot scale preparation of hard ores.

Overview

A cone crusher uses a mantle that gyrates within a concave bowl, so the crushing gap opens and closes continuously around the chamber. Material is squeezed as the gap closes and drops further as it opens, giving high throughput and a controlled product size set by the closed side setting. The crushing chamber shape and eccentric speed influence capacity and product distribution. Cone crushers handle hard and abrasive ores and are more productive than jaw crushers at fine reduction ratios because the chamber works continuously. They are used in larger laboratory and pilot plants, often as a secondary stage after a jaw crusher.

How does it work?

Crushers apply mechanical forces that exceed the strength of the feed material, causing it to fracture. Jaw crushers press material between a fixed and a moving jaw, roll crushers draw it between counter-rotating cylinders, cone crushers squeeze it in a gyrating chamber, hammer crushers strike it with rotating hammers, and impact crushers break it against a rotating or fixed anvil. The reduction ratio, feed size and product size depend on the machine geometry, the gap setting and the material hardness. Crushing is normally the coarse stage that prepares feed for a mill, and over-crushing is avoided because fines can complicate later handling. Wear parts are made from hardened steel or manganese alloys to resist abrasion.

What are the key features?

• Continuous gyratory crushing action
• High throughput for hard, abrasive ores
• Adjustable closed side setting
• Wear-resistant manganese mantle and bowl liner
• Compact laboratory and pilot configurations

What are the technical specifications?

A typical cone crusher configuration offers max feed size of 60 mm, product size of 2–20 mm, adjustable, throughput of Up to 500 kg/h, closed side setting of 3–25 mm, mantle material of Manganese steel and eccentric speed of 300–500 rpm. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The Cone Crusher is used in hard ore sample preparation, mining laboratory and pilot plants, metallurgical sample reduction and aggregate and mineral processing. Across the wider Crushers class, laboratories also deploy it for mining and ore sample preparation, cement and clinker analysis and geological and soil sample reduction.

Which standards and certifications apply?

Relevant standards and methods include ISO 3310-1, ASTM E11, ISO 2591-1, IEC 61010-1 and ISO 6497. Certification candidates for this model are CE and ISO 9001 manufacturing; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Install crushers on a firm floor with the necessary electrical protection and, where required, dust extraction and noise enclosure. Do not exceed the rated feed size, since oversized pieces can jam the machine or damage the jaws. Feed material gradually and avoid running the crusher empty for long periods. Check and replace wear parts on schedule, and clean thoroughly between samples to avoid cross-contamination, using a blank or quartz flush where trace analysis demands it. Follow lock-out procedures during maintenance and guard all moving parts.

How do I select the right Cone Crusher?

Choose a cone crusher when hard, abrasive material must be reduced at higher throughput than a jaw crusher allows. Confirm the closed side setting range gives the required product size and that the chamber type suits the material. In an RFQ state feed size, product size, throughput and the electrical supply.

How does it compare with other Crushers variants?

Choose a crusher according to the feed size, hardness and abrasiveness of the material and the required product size. Jaw crushers suit hard, brittle lumps and give a fairly uniform product with adjustable gap. Roll crushers suit medium-hard, brittle material and produce less dust. Cone crushers handle high throughput of hard material. Hammer and impact crushers suit softer, less abrasive materials and give higher reduction ratios. Confirm that the feed opening accepts the largest pieces, that the reduction ratio matches the required downstream size, and that the crushing chamber and wear parts suit the abrasiveness. Consider dust control, sample representativeness and cleaning between samples.