Mica Crushing Production Line Price

Primary Crushing

Quarried mica normally is delivered to the processing plant by truck and is dumped into a bin. The feeder or screens separate large boulders from finer rocks that do not require primary crushing, thus reducing the load to the primary crusher. Jaw, impactor, or gyratory crushers are usually used for initial reduction. The crusher product, normally 7.5 to 30 centimeters in diameter, and the grizzly throughs are discharged onto a belt conveyor and usually are conveyed to a surge pile for temporary storage or are sold as coarse aggregates.

Seondary Crushing

The mica that is too large to pass through the top deck of the scalping screen is processed in the secondary crusher. Cone crushers are commonly used for secondary crushing, which typically reduces material to about 2.5 to 10 centimeters. The material from the second level of the screen bypasses the secondary crusher because it is sufficiently small for the last crushing step. The output from the secondary crusher and the throughs from the secondary screen are transported by conveyor to the tertiary circuit, which includes a sizing screen and a tertiary crusher.

Tertiary Crushing

Tertiary crushing is usually performed using cone crushers or other types of impactor crushers. Oversize mica material from the top deck of the sizing screen is fed to the tertiary crusher. The tertiary crusher output is returned to the sizing screen. Various product streams with different size gradations are separated in the screening operation. The products are conveyed or trucked directly to finished product bins, to open area stock piles, or to other processing systems such as washing, air separators, and screens and classifiers.

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