Process Research Ortech Inc.

Kelvin Thermal Energy Inc.

Mansoor Barati

Ramamritham Sridhar

Vaikuntam Iyer Lakshmanan

Raja Roy

Amirhossein Ahadi

Kingsley Kweku Larbi

Abdolkarim Danaei

A process to the production of silicon from amorphous silica is disclosed. The amorphous silica is formed from a material rich in silica, especially rice husk ash or silica fume. The process comprises subjecting the amorphous silica to leaching with a lixiviant of aqueous mineral acid, especially hydrochloric acid. Preferably, material rich in silica is roasted at a temperature of not more than 850&#xb0; C., subjected to leaching and then subjected to a second roasting at a temperature of less than 750&#xb0; C. The process provides for the production of high purity silicon, especially to the production of solar grade silicon (SoG-Si).

Production of high purity silicon from amorphous silica

Growing community of inventors

Toronto, Canada

Mansoor Barati