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:
Sep. 05, 2017
Filed:
Oct. 18, 2011
Applicant:
Alfred Edlinger, Bartholomäberg, AT;
Inventor:
Alfred Edlinger, Bartholomäberg, AT;
Assignee:
ICL Europe Cooeperatief U.A., Amsterdam, NL;
Primary Examiner:
Int. Cl.
CPC ...
C01B 25/08 (2006.01); C01B 25/01 (2006.01); C02F 11/18 (2006.01); C01B 25/02 (2006.01); C02F 11/00 (2006.01); C02F 11/06 (2006.01);
U.S. Cl.
CPC ...
C01B 25/08 (2013.01); C01B 25/01 (2013.01); C01B 25/02 (2013.01); C02F 11/18 (2013.01); C02F 11/004 (2013.01); C02F 11/06 (2013.01); Y02W 10/40 (2015.05);
Abstract
A method for recycling organic waste material containing phosphorus oxides and metal oxides is particularly suited for recycling sewage sludge. The waste materials are mixed with chlorine carriers and then heat-treated at an air ratio of 0.85≦λ≦1.6 and at least partially oxidized. The metal chlorides thus formed are drawn off and recovered and the fraction remaining after the metal chlorides have been drawn off is subjected to reduction in order to obtain elemental phosphorus.