The sands mined go through a beneficiation process to increase the silica content and reduce the impurities and contaminants. The result is an improved product, in a final form commercially suited to the glass, ceramics and foundry industries.

Drilling and sampling will determine the initial product grades, and further testing using the beneficiation process will identify an indicative assessment of the output product. Initial grade results are typically lower than the finished product grades after the completion of the beneficiation process.

Commercial Grade Silica Sand

After beneficiation the output product would need to meet this range of specifications:

Parameter Specification Photovoltaic Glass Specification Container Glass
Particle Size 109-700 microns 109-700 microns
Distribution 24-140 mesh 24-140 mesh
Silica (SiO2) > 99.5% > 98.5%
Iron (Fe2O3) < 0.01% (100 ppm) < 0.04% (400 ppm)
Titanium (TiO2) < 0.04% (400 ppm) < 0.1% (1000 ppm)
Aluminium (Al2O3) < 0.10% (1000 ppm) < 0.50% (5000 ppm)

Product Specifications Risk

A significant project risk is not meeting market specifications for the product. Failure to meet product specifications may result in selling the products at discounted rates, or not being able to find buyers for the product.

Dune Buggy Esperance Project

The Process



Classification and Washing

Gravity Separation

Magnetic Separation

Final Screening and De-watered
Finished Product

Loaded for Transport