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:
Oct. 28, 2003
Filed:
Apr. 26, 2001
Applicant:
Inventors:
Assignee:
Stolberger Metallwerke GmbH & Co. KG, Stolberg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 9/02 ; B01D 3/700 ;
U.S. Cl.
CPC ...
B01D 9/02 ; B01D 3/700 ;
Abstract
A method and a system for regenerating a metal bath contaminated by mixed crystals, particularly a tin bath ( ) in a hot-dip coating process. A partial stream of the tin bath ( ) is removed from the coating tank ( ) and is first of all heated above its liquidus temperature in a heating unit ( ). Subsequently, the tin bath is conducted over a cooling unit ( ) and, while flowing through a filter ( ), is cleaned of mixed crystals coming down as a result of the cooling. The filter is a ceramic foam filter made of silicon carbide. Subsequently, the regenerated tin bath ( ) is heated in a melting tank to process temperature, and returned from there to the coating tank ( ).