The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 18, 1983
Filed:
Dec. 10, 1980
Torben Enkegaard, Copenhagen, DK;
F. L. Smidth & Co., , US;
Abstract
A method is disclosed for manufacturing pulverous or granular material in a plant supplied with raw material, for example, cement raw meal, including a kiln for burning the raw material to be treated therein, a cooler coupled after the kiln for cooling the product treated in the kiln, a first preheater coupled before the kiln and heated with kiln exit gases, and a second preheater heated with spent cooling air. According to the preferred embodiment, the method comprises the steps of feeding all of the raw material to the second preheater, conveying all of the raw material preheated in the second preheater to the first preheater, and returning to the cooler for reuse therein, all of the cooling air cooled in the second preheater. A unique plant is disclosed for practicing the method of the invention. The method and plant promote fuel economy and eliminate or at least minimizes dedusting requirements in the manufacture of such pulverous or granular material.