Jaw crushers can be used for primary and secondary crushing. For primary crushing, jaw crushers are often used in conjunction with a feeder and a scalping screen. For secondary crushing, jaw crushers can be used in combination with a cone crusher or a vertical shaft impactor (VSI) crusher.
The size of the end product produced by a jaw crusher can be adjusted by changing the size of the discharge opening. A larger discharge opening results in a larger product size, while a smaller discharge opening results in a finer product size.