Turkey 1,500t/d Quartz Glass Sand Processing Plant

Crushing: The raw ore is crushed to a particle size of less than 3 cm in a jaw crusher and a cone crusher. The ore is then conveyed to the mill via a buffer silo and feeder via a belt conveyor.

Sand Making and Screening : The mill grinds the crushed raw material into sand, which is then screened on a post-grinding screen (2-3 mm aperture). The undersize product enters the slurry tank, while the oversize product returns to the mill via a return belt for secondary sand making.

Cleaning and Desludging : The slurry in the slurry tank is pumped into a scrubber via a slurry pump. This mechanical, flexible, and frictional process removes colloids, film-forming iron, and aluminum impurities from the sand particles. The slurry is then pumped to a desludging hopper (located above the grading tower) to separate sand, mud, and impurities, reducing the mud content and balancing the slurry concentration.

Classification: After desliming, the product enters an obstructed settler to separate coarse particles larger than 26 mesh (adjustable). These particles are then returned to the mill for re-grinding via a return device. The obstructed settler is equipped with a safety screen to improve classification efficiency. Products below 26 mesh enter a hydraulic classifier to further separate fine particles below 140 mesh. The output products of both the obstructed settler and the hydraulic classifier are of acceptable particle size.

Magnetic Separation for Iron Removal : Qualified products first pass through a medium-magnetic plate magnetic separator (magnetic field strength 4000-4500 GS) to remove mechanical iron. They then pass through a high-magnetic plate magnetic separator (12000-13000 GS) to remove all mechanical iron and some weakly magnetic iron. Finally, two series-connected vertical ring high-gradient magnetic separators (electromagnetic, strength 1.4 T) are used for deep iron removal.

Flotation Purification and Dewatering : After magnetic separation, the product enters a thickening hopper for concentration and is then conveyed to the flotation equipment for dealuminization, de-ironization, and silicon extraction. After flotation, the product passes through a dewatering screen to reduce moisture and is then conveyed by belt to the finished product area for the next process.

Water Circulation and Sludge Handling : The system is equipped with a thickener, which collects water from all processes, settles the sludge, and returns the clean water to the wet grinding system for reuse. The settled sludge is pumped into a filter press or ceramic filter for water separation. After dehydration, the dry sludge cake is transported to a storage shed for storage. Fine sand passes through a thickening hopper, where water is simply controlled and collected as secondary sand.

Final Product and Environmental Design: The overall process products include concentrated sand, secondary sand (fine sand), and dry sludge cake. There is no external discharge throughout the entire process, requiring only a small amount of make-up water.