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:
Jun. 23, 1998
Filed:
Sep. 27, 1996
Applicant:
Inventors:
Mattias Kremer, Wiesbaden, DE;
Georg Wahl, Rodenbach, DE;
Eberhard Gock, Goslar, DE;
Stefan Wigger, Hanau, DE;
Jorg Kahler, Clausthal-Zellerfeld, DE;
Assignee:
Durferrit GmbH Thermotechnik, Mannheim, DE;
Primary Examiner:
Int. Cl.
CPC ...
C01D / ; C01F / ;
U.S. Cl.
CPC ...
2330 / ; 23303 ; 23304 ; 423155 ; 423158 ; 423184 ;
Abstract
The process for environmentally acceptable and economical recovery of chloride salts from hardening-shop used salts utilizing the steps of leaching of the used salt, detoxification of the cyanide and selective crystallization of the individual chloride salts. The process is characterized in that all the chloride salts that are present in the hardening-shop used salt are recovered in pure form.