Apparatus and method for the heat treatment of fine-grained material

US4861265A · kind A · utility

Assignee

• Krupp Polysius AG · DE

Inventors

• Manfred Durr · Bad Sobernheim, DE
• Georg Unland · Ennigerloh, DE
• Gunter Driemeier · Lienen, DE
• Karl Krutzner · Beckum, DE
• Heinz-Herbert Schmits · Rheda-Wiedenbrück, DE
• Michael von Seebach · Ennigerloh, DE
• Otto Heinemann
• Wolfgang Rother
• Dieter Dreyer · Ennigerloh, DE

Key dates

• Filing date: Oct 13, 1988
• Grant date: Aug 29, 1989
• Expiry date: Oct 13, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C04B7/434
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to apparatus and to a method for the heat treatment of fine-grained material using a multi-stage cyclone preheater and a combustion chamber supplied with tertiary air from the cooler, in which the branched part of the tertiary air pipe extends upwards and the material discharged from the second-lowest stage of the cyclone preheater is introduced into one branch pipe at a point which lies lower than the point at which this branch pipe is connected to the combustion chamber. In this way good dispersal of the material which is delivered pneumatically to the combusion chamber and excellent combustion conditions are achieved at the same time as a considerable reduction in the overall height of the entire cyclone preheater.