Process for providing noble metal-containing mixtures for recovering noble metals

US9169536B2 · kind B2 · utility

Assignee

• UMICORE AG & CO. KG · DE

Inventors

• Klaus Zimmermann · Alzenau, DE
• Robert Hartmann · Winter Garden, US
• Oswald Kinz · Langenselbold, DE
• Matthias Grehl · Frankfurt, DE

Key dates

• Filing date: Apr 12, 2012
• Grant date: Oct 27, 2015
• Expiry date: Jul 7, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02W30/50
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to the provision of noble metal-containing mixtures for a process for processing them by heating the mixture, preferably for processing them by means of an ashing process. This provision is characterized by the following measures: (a) moistening of the noble metal-containing mixture to be processed, (b) introduction of the moistened noble metal-containing mixture into at least one container which serves as diffusion barrier for water, and (c) introduction of the loaded container into a heat-resistant chamber together with at least one upper refractory mat. The noble metal-containing mixture is preferably moistened in the presence of a porous material and the chamber is closed by means of a heat-resistant covering. The invention further provides a processing process comprising the provision of noble metal-containing mixtures and also the heat-resistant chamber loaded with noble metal-containing mixtures itself. The process of the invention enables simple, clean recovery of noble metals in high yield from noble metal-containing mixtures.