Method for preparing ammonium metatungstate

US12391571B2 · kind B2 · utility

Assignee

• H.C. Starck Tungsten GmbH · DE

Inventors

• Julia Meese-Marktscheffel · Goslar, DE
• Armin Olbrich · Seesen, DE
• Anja Weiland · Frankenthal (Pfalz), DE
• Frank Van Der Putten · Hombeek, BE
• Tino Säuberlich · Bad Harzburg, DE
• Tobias Schröer · Bad Harzburg, DE
• Jurgen Muller · Wulfen, DE

Key dates

• Filing date: Dec 18, 2019
• Grant date: Aug 19, 2025
• Expiry date: Nov 11, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C02F2101/20
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for preparing ammonium metatungstate using a reverse osmosis cell, and to a device for performing the process according to the invention.