Cone crusher capacity charts

Cone crusher capacity charts are developed for use as an application tool to properly utilize the crusher’s capabilities when operated in closed circuit. Symons cone crushers have 3 separate and distinct capacities (see diagrams on following page). The difference between these is the point in the circuit at which the measure is taken in either open circuit or closed circuit operation. The crusher is one component of the circuit. As such, its performance is in part dependent on the proper selection and operation of feeders, conveyors, screens, supporting structure, electric motors, drive components and surge bins. Where used, attention to the following factors will entrance crusher capacity and performance.
1. Proper selection of crushing chamber for material to be crushed.
2. A feed grading containing proper distribution of the particle sizes.
3. Controlled feed rate.
4. Proper feed distribution 360 around the crushing chamber.
5. Discharge conveyor sized to carry maximum crusher capacity.
6. Properly sized scalping and closed circuit screens.
7. Automation controls.
8. Adequate crusher discharge area.
The following factors will detract from crusher capacity and performance.
1. Sticky material in crusher feed.
2. Fines in crusher feed (smaller than crusher setting) exceeding 10% of crusher capacity.
3. Excessive feed moisture.
4. Feed segregation in crusher cavity.
5. Improper feed distribution around circumference of crushing cavity.
6. Lack of feed control.
7. Inefficient use of recommended connected horsepower.
8. Insufficient conveyor capacity.
9. Insufficient scalper and closed circuit screen capacities.
10. Insufficient crusher discharge area.
11. Extremely hard or tough material.
12. Operation of crusher at less than recommended full load countershaft speed.
The capacities shown in the tables are based on results obtained from thousands of installations worldwide, crushing the broadest range of ores, rocks and minerals to determine effect of individual conditions.

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