Granite beneficiation commonly applies a process flow of crushing, grinding, classification, and flotation. The main mineral components of granite are quartz, feldspar, and mica, and it can be widely used in glass, ceramics, and other fields.

Granite feldspar ore beneficiation process

Granite feldspar ore crushing process

The crushing process of granite feldspar mines mainly includes crushing and screening, and adopts a three-stage closed-circuit process. The minerals are fed to the primary crushing stage by a feeder. After reaching the appropriate particle size, they are conveyed to the secondary crushing stage by a belt conveyor. The crushed products are screened by a vibrating screen, while unqualified materials are returned to the secondary crushing stage by a belt conveyor for further crushing.

Granite feldspar ore grinding process

The main purpose of the grinding process is to further grind the crushed mineral particles to achieve full liberation between feldspar and other minerals, so as to meet the particle size requirements for separation. This stage often employs a two-stage closed-circuit grinding process. Hydraulic classification equipment is used to control the content of over-ground particles to meet the particle size requirements of glass and ceramic raw materials. This ultimately achieves monomer dissociation, allowing the material to enter the separation stage.

Granite feldspar flotation process

Flotation utilizes the difference in potential between quartz and feldspar/mica minerals in different environments. Surfactants are selectively adsorbed onto the surface of feldspar/mica minerals, making the surface of these minerals hydrophobic and allowing them to adhere to air bubbles and float, thereby achieving the separation of the two. The process is divided into two parts. One part of the flotation operation is mainly for the purpose of removing iron and mica, while the other part is to achieve the effective separation of quartz and feldspar.

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