Method and device for discharging hard to grind particles from a spiral jet mill

US11235337B2 · kind B2 · utility

Assignee

• NEIZSCH Trockenmahltechnik GmbH · DE

Inventors

• Frank Winter · Mühlheim, DE
• Hermann Sickel · Karlstadt, DE

Key dates

• Filing date: Aug 19, 2019
• Grant date: Feb 1, 2022
• Expiry date: May 8, 2040

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B02C25/00
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A grinding, separating, and discharging of hard to grind parts of a material mixture of components with different grindability from a spiral jet mill, wherein the hard to grind parts are discharged from the process chamber via at least one additional discharge nozzle. A spiral jet mill for comminuting and classifying grinding material, including at least one process chamber, wherein this at least one process chamber is enclosed by a housing, at least one grinding material feeding, which leads into the at least one process chamber, at least two grinding nozzles, a fine material outlet, which is radially enclosed by a separator wheel, wherein at least one discharge nozzle is assigned to the process chamber.