What processes and equipment are necessary for a sand and gravel crushing plant?

The crushed stone and sand production line includes stages such as jaw crushing, screening, cone crushing, impact crushing, and screening of the finished product. Typical equipment configurations:

I. Equipment for feeding material to the coarse crushing stage

Equipment for feeding material to the coarse crushing stage mainly includes rod and plate feeders. Rod feeders not only transport the material but also perform preliminary screening during transportation, removing impurities such as sludge.

II. Coarse crushing equipment

In the production of sand and gravel, jaw crushers are common equipment for coarse crushing. They can crush large materials into medium-sized pieces, which facilitates subsequent crushing.

III. Intermediate storage

Coarsely crushed material can be stored in an intermediate storage area so that the equipment further down the production line can continue production using it in case of material shortages from the equipment further up the production line, transportation problems, or maintenance.

IV. Preliminary Screening Before Medium Crushing

Preliminary screening removes materials smaller than the discharge material for medium crushing, preventing them from entering the medium crushing equipment and preventing over-crushing. The mesh size of the preliminary screening also controls the amount of material entering the medium and fine crushing or shaping equipment, and the maximum particle size of the raw material, thereby optimizing the equipment configuration and reducing the requirements for the characteristics or quantity of crushing equipment.

V. Medium Crushing Equipment

The medium crushing equipment uses a cone crusher, forming a closed system with the preliminary screening equipment. Material smaller than<12 mm after preliminary screening can be directly used as raw material for sand production, bypassing the crushing system, preventing over-crushing and increasing the productivity of the crushing system.

VI. Shaping and Sand Production Equipment

The third stage of crushing uses a vertical shaft impact crusher, which combines the functions of crushing and shaping. After crushing and shaping in the vertical shaft impact crusher, the material enters the finished product screening screen. The finished product screen and the vertical shaft impact crusher form a closed system.

VII. Equipment for sorting finished products

The discharge hopper of the finished product sorting equipment is equipped with a hinged valve that can return part of the finished material to the vertical shaft impact crusher for further crushing, thereby regulating the output of the finished product and making system control more flexible.

Shibang Group will provide you with the most suitable production equipment for crushing hard or soft rocks, mobile or stationary installations.