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. 04, 2012
Filed:
Mar. 15, 2011
Kenichi Kuwano, Hitachi, JP;
Atsuko Abe, Hitachi, JP;
Manabu Manabe, Hitachi, JP;
Akira Miura, Hitachi, JP;
Kenichi Kuwano, Hitachi, JP;
Atsuko Abe, Hitachi, JP;
Manabu Manabe, Hitachi, JP;
Akira Miura, Hitachi, JP;
JX Nippon Mining & Metals Corporation, Tokyo, JP;
Abstract
A method of leaching copper sulfide ore includes leaching copper from copper sulfide ore using a sulfuric acid solution comprising iodide ion and iron (III) ion surplus to the iodide ion as a leaching solution; reducing iodine in a solution obtained after the leaching step to less than 1 mg/L by an activated carbon treatment; and oxidizing iron (II) ion or newly added iron (II) ion in a solution obtained after the iodine reduction step by using iron oxidizing microbes to recover iron (III) ion.