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:
Jul. 29, 2014
Filed:
Feb. 19, 2010
Applicants:
Mikko Ruonala, Kantvik, FI;
Jaakko Leppinen, Noormarkku, FI;
Ville Miettinen, Pori, FI;
Inventors:
Assignee:
Outotec Oyj, Espoo, FI;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 21/00 (2006.01); C02F 1/52 (2006.01); B03D 3/00 (2006.01); C02F 1/72 (2006.01); C01G 1/00 (2006.01); C01G 49/00 (2006.01); C01G 51/00 (2006.01); C01G 53/00 (2006.01); C22B 1/00 (2006.01); C22B 23/00 (2006.01); C22B 7/00 (2006.01); C22B 30/04 (2006.01); C22B 3/44 (2006.01); C02F 1/68 (2006.01); C02F 1/00 (2006.01); B01D 37/00 (2006.01); C01G 28/00 (2006.01); C01G 29/00 (2006.01); C01G 30/00 (2006.01); C02F 1/74 (2006.01); C02F 101/10 (2006.01); C02F 101/20 (2006.01);
U.S. Cl.
CPC ...
C22B 7/006 (2013.01); C02F 1/74 (2013.01); C02F 2101/103 (2013.01); C02F 1/722 (2013.01); C22B 30/04 (2013.01); C02F 1/72 (2013.01); C02F 1/001 (2013.01); C02F 2101/203 (2013.01); C22B 3/44 (2013.01); C01G 49/0018 (2013.01);
Abstract
The invention relates to a method for removing arsenic as scorodite from solutions that contain iron and arsenic. In accordance with the method, arsenic is first precipitated as ferric arsenate and subsequently processed hydrothermally into crystalline scorodite.