Method and apparatus for the production of coaldust

US4236886A · kind A · utility

Assignee

• Klockner-Humboldt-Wedag AG · DE

Inventors

• Jakob Ansen · Cologne, DE
• Heinz Hoppen · Weingarten, DE
• Helmut Duill · Cologne, DE

Key dates

• Filing date: Oct 10, 1978
• Grant date: Dec 2, 1980
• Expiry date: Oct 10, 1998

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23K1/00
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A method and apparatus for the preparation of coaldust for use with a preheater and a cement calcination apparatus. Exhaust gas from the preheater is mixed with a source of coal and input to a pulverizing mill. The output of the pulverizing mill passes through an air current separator and a cyclone separator. The output of the air-current-separator, a stream of coal gravel, is supplied as a fuel at a calcination point in the calcination apparatus. The exhaust output from the separator provides an input to the cyclone separator which separates coaldust from the gas. The exhaust from the cyclone separator is in part fed-back to a calcination point in the calcination apparatus and is also a part of the stream of gravel. The entire process is closed so that no burnable coaldust is lost to the atmosphere.