HPQ Silicon Inc V.HPQ

Pyrogenesis Updated Website explains PUREVAP

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https://www.pyrogenesis.com/products-services/advanced-materials-processing/purevap/

PUREVAP^TM

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, solar grade silicon and polysilicon from quartz. The variety of grades produced by PUREVAP^TM
can be used for different applications, including solar energy and electronics.

Features & Benefits of PUREVAP^TM:

• 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.

 

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.