Process for producing potassium chloride granulates

US11795060B2 · 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: Oct 24, 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 granulates from a crystalline potassium chloride raw material. The potassium chloride raw material is treated, prior to granulation, with at least one alkali metal carbonate and at least one phosphate additive selected from alkali metal monophosphates, alkali metal pyrophosphates, linear alkali metal polyphosphates and mixtures thereof, in the presence of water.