Method for producing nickel hydroxides

US6752918B1 · kind B1 · utility

Assignee

• H.C. STARCK INC. · US

Inventors

• Armin Olbrich · Seesen, DE
• Viktor Stoller · Bad Harzburg, DE
• Juliane Meese-Marktscheffel · Goslar, DE
• Frank Schrumpf · Goslar, DE
• Josef Schmoll · Wermelskirchen, DE
• Gerhard Gille · Goslar, DE

Key dates

• Filing date: Nov 5, 2001
• Grant date: Jun 22, 2004
• Expiry date: Nov 5, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/10
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A process is described for the production of spherical nickel hydroxide by anodic dissolution of a nickel electrode and precipitation of nickel hydroxide in a completely intermixed electrolysis cell, wherein an electrolysis brine is used which has a content of 20 to 50 g/l of chloride ions and 1 to 7 g/l of ammonia with a pH value of 9.5 to 11.5 and a temperature of 45 to 60° C.