Polyhalite granulation process

US10894749B2 · kind B2 · utility

Assignee

• ICL EUROPE COOPERATIEF U.A. · NL

Inventors

• Khalil ABU RABEAH
• Ofir COHEN · Arad, IL
• Ayoub ALHOWASHLA · Hora, IL
• Natalia GEINIK · Arad, IL
• Ruben SOCOLOVSKY
• Yacov LEVY · Dimona, IL
• Marina Dekov · Arad, IL
• Joseph Lati · Rahat, IL

Key dates

• Filing date: Feb 9, 2018
• Grant date: Jan 19, 2021
• Expiry date: Feb 9, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C05G5/40
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

There is provided herein a process for the production of polyhalite granules from fine dry polyhalite powder comprising preparing a binder-water mix and mixing the binder-water mix with the polyhalite powder in a mixer, continuously adding water to the mixer to provide a polyhalite material, discharging the polyhalite material from the mixer and introducing the material into a fluid bed, drying the material and screening the material to receive granules ranging in size between 1.4 mm to 4.75 mm.