Method for producing potassium chloride granular material

US11814297B2 · kind B2 · utility

Assignee

• K+S AKTIENGESELLSCHAFT · DE

Inventors

• Guido BAUCKE · Schenklengsfeld, DE
• Armin Dietrich · Weissenberg, DE
• Stefan Dressel · Heringen, DE
• Sebastian Kopf · Unterrohn, DE
• Paul Meissner · Camarillo, US
• Wolfgang Walczyk · Herfa, DE
• Ludger Waldmann · Telgte, DE

Key dates

• Filing date: Aug 22, 2017
• Grant date: Nov 14, 2023
• Expiry date: Aug 22, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/21
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A method for producing potassium chloride granular materials from a crystalline potassium chloride raw material, wherein, before the granulation process, the potassium chloride raw material is treated with at least one alkali metal carbonate and at least one hydrogen phosphate additive in the presence of water. The alkali metal carbonate is anhydrous sodium carbonate, sodium carbonate monohydrate or sodium carbonate decahydrate.