Processes for producing silicon

US10118829B2 · kind B2 · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Peter Gigler · Dachau, DE
• Juergen Stohrer · Pullach, DE

Key dates

• Filing date: Oct 24, 2016
• Grant date: Nov 6, 2018
• Expiry date: Nov 20, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/80
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Silicon is produced by magnesiothermic reduction of silicon dioxide, wherein to achieve magnesiothermic reduction a reactant mixture is employed which contains silicon dioxide (SiO2) and magnesium (Mg) and, as moderators, magnesium oxide (MgO) and silicon (Si), and optionally further moderators.