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:
Jul. 25, 1995
Filed:
Jan. 06, 1994
Applicant:
Inventors:
John D Lynn, Center Valley, PA (US);
Thomas H Weidner, Allentown, PA (US);
Elmer D Anderson, II, Valparaiso, IN (US);
Assignee:
Bethlehem Steel Corporation, , DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21B / ;
U.S. Cl.
CPC ...
75770 ; 75765 ; 75769 ; 75772 ; 266158 ; 266178 ;
Abstract
A system and process for treating dust and sludge from iron and steel making operations and includes separating iron and carbon from zinc and lead. Separation is performed in a series of hydrocyclones associated in a series-parallel fashion, The iron and carbon is recycled within the iron making operation without detriment to furnace liners, Lime and flocculent are added to the lead and zinc to create a stable material suitable for landfill disposal, Sludges are consumed by injection onto a sinter strand.