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:
Dec. 15, 2015
Filed:
Nov. 11, 2010
Carsten Gerold, Duesseldorf, DE;
Frank Dardemann, Roetgen, DE;
Joerg Langel, Cologne, DE;
Holger Wulfert, Berlin, DE;
Carsten Gerold, Duesseldorf, DE;
Frank Dardemann, Roetgen, DE;
Joerg Langel, Cologne, DE;
Holger Wulfert, Berlin, DE;
LOESCHE GmbH, Duesseldorf, DE;
Abstract
The invention relates to a preparation method for stainless steel slags and modified steelworks slags for recovery of metal. In order to create a dry preparation method which guarantees a low wear and energy efficient comminution and de-agglomeration of stainless steel slags and modified steelworks slags as well as a selective separation of a metal fraction and a silicate fraction and which can be variable in relation to the different slag compositions and different requirements upon the quality of the metal fraction and the at least one silicate fraction, a roller mill is used at least for the comminution. The slags are supplied with a feed grain size of up to approximately 150 mm. The use of an air swept roller mill is advantageous, in which the comminution and de-agglomeration, if necessary drying, and at the same time a separation into an extensively mineral-free metal fraction and a virtually metal-free silicate fraction are brought together. When using an overflow roller mill the separation of the metal fraction and the silicate fraction takes place in an external classifier.