Stone Processing Equipment

Stone crushing is a crucial and primary stage in stone processing. There are mainly three steps in crushing process according to final products applications. Many different types of stone processing equipment and crushers are involved.

Primary crushing

Quarried stone is commonly crushed firstly by the primary crusher. Jaw crusher, impact crusher, or gyratory crushers are usually used for primary crushing stage. The crushed particle sizes are normally 3 to 12 inches in diameter, and undersize material will be conveyed for recrushing, or for temporary storage or used as coarse aggregates.

Secondary crushing

The stone that is too large to pass through the top screen will be processed in the secondary crusher. Cone crushers are commonly used for secondary crushing; sometimes impact crushers are used, which typically reduces material to about 1 to 4 inches. The material from the second level of the screen bypasses the secondary crusher because it is sufficiently small for the last crushing step.

Tertiary crushing

Tertiary crushing is usually performed by cone crushers or other types of impact crushers. Oversize material in the secondary crushing process is fed into the tertiary crusher. The tertiary crusher products are about 3/16th to 1 inch. Various product streams with different size gradations are separated in the screening operation. The products are delivered for final applications, or to other processing systems such as washing, air separators, and screens and classifiers (for the production of manufactured sand).

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