Vertical mill

US7866584B2 · kind B2 · utility

Assignee

• Polysius AG

Inventors

• Pedro Guerrero Palma · Lippetal, DE
• Karl Menzel · Ennigerloh, DE

Key dates

• Filing date: Feb 28, 2006
• Grant date: Jan 11, 2011
• Expiry date: Sep 5, 2027

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B02C15/004
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a vertical mill comprising a grinding track (1) and at least one grinding roller (2). The grinding track (1) is provided with a central zone (Ia) made of a harder material and two laterally adjacent edge zones (Ib, Ic) made of a softer material. The width (a) of the central zone (Ia) is smaller than or equal to the width of the grinding roller (2).