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:
Feb. 10, 1981
Filed:
Mar. 03, 1980
Howard F Davis, Jr, Pittsburgh, PA (US);
John A Persson, Gibsonia, PA (US);
Pennsylvania Engineering Corporation, Pittsburgh, PA (US);
Abstract
A method is disclosed for obtaining useful products from cement kiln waste dust. The dust is collected and added to an electric arc furnace where it is melted. The temperatures required to melt the dust are sufficiently high that alkali sulfates present in the dust are volatilized, leaving a melt which has a composition acceptable for the production of cement clinker. The volatilized components are collected to form a second useful product; i.e., a potassium rich material suitable for the production of potassium bearing chemicals, such as fertilizers.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile