Developed by PyroGenesis, PUREVAP^TM is a patent pending one-step proprietary process that uses a plasma arc within a vacuum furnace to produce high purity metallurgical grade silicon and solar grade silicon from quartz. It is expected that the silicon grades produced by PUREVAP^TM could be used for different applications, including solar energy.

BENEFITS:

• One-step direct transformation process;
• Lower cost for producing silicon compared to current practices;
• Lower CO₂ than current processes;
• Remove impurities: Phosphate, Potassium, Magnesium, Zinc, Calcium, and other elements.

HOW IT WORKS:

PUREVAP^TM reduces the quartz with carbon using a plasma submerged arc. Under vacuum, and at very low operating pressure, the silicon is refined in a one-step process removing all impurities and transforming it to its purest form, resulting in a high purity silicon.