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Silica Sand Beneficiation Production Line

Silica sand processing is of varying degrees of complexity, and depends on the nature of the raw material and the end use of the sand. It typically requires a high capital investment in plant. Processing is aimed at improving both the physical and chemical properties of the sand to meet user specifications. Typically several grades of sand are produced from one site either by selective extraction or processing.

At most operations processing involves washing, attrition scrubbing and size-classification to remove the coarse and very fine fractions and to obtain a clean sand with the desired particle size distribution.

Silica Sand Beneficiation Production Line

In silica sand beneficiation production line, the mined rock is transported to the processing site and stockpiled. The material then is crushed. According to the degree of cementation, several stages of crushing may be required to produce the desired size reduction, such as primary crushing, secondary crushing and tertiary crushings. Gyratory crushers, jaw crushers, roll crushers, impact mills and cone crushers are used for primary and secondary crushing.

After crushing, the size of the material is further reduced to 50 micrometers or smaller by grinding, using ball mill, media mills, autogenous mills, hammer mills, or jet mills. The ground material then is classified by wet screening plant, dry screening machine, air classification machine, and dried by drying plant.

Silica Sand Extraction Machine

The raw materials for producing silica sand generally are mined from open pits of naturally occurring quartz-rich sand and sandstone. Mining methods depend primarily on the degree of cementation of the rock. In some deposits, blasting is required to loosen the material prior to processing.

Loosely consolidated sands can be easily extracted. Worked thicknesses are up to 15 m for sandstone deposits. Some selective extraction is required in the Passage Formation sandstones to avoid contaminated sandstone and mudstone/siltstone beds.

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