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. 12, 2017
Filed:
Jun. 21, 2013
Applicant:
Outotec (Finland) Oy, Espoo, FI;
Inventors:
Dirk Lohrberg, Offenbach, DE;
Bertold Stegemann, Eschborn, DE;
Guenter Schneider, Lorsch, DE;
Ludwig Hermann, Auersthal, AT;
Assignee:
OUTOTEC (FINLAND) OY, Espoo, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B 25/00 (2006.01); C01B 25/04 (2006.01); C05B 7/00 (2006.01); B01J 8/18 (2006.01); B01J 8/24 (2006.01); C02F 11/00 (2006.01); C02F 11/10 (2006.01); C02F 101/20 (2006.01);
U.S. Cl.
CPC ...
C01B 25/04 (2013.01); B01J 8/1836 (2013.01); B01J 8/24 (2013.01); C05B 7/00 (2013.01); B01J 2208/00017 (2013.01); C02F 11/004 (2013.01); C02F 11/10 (2013.01); C02F 2101/20 (2013.01); Y02P 20/129 (2015.11);
Abstract
A process for separating heavy metals from a phosphoric starting material includes, in a step (i), heating the starting material to a temperature between 700 and 1,100° C. in a first reactor and withdrawing combustion gas. In a step (ii), the heated starting material at the temperature between 700 and 1,100° C. is transferred to a second reactor, chlorides of alkaline and alkaline earth metals are added and process gas is withdrawn.