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:
Apr. 01, 2014
Filed:
Feb. 03, 2011
Hideyuki Okamoto, Niihama, JP;
Yoshiyuki Tanaka, Niihama, JP;
Tsuyoshi Hirajima, Fukuoka, JP;
Keiko Sasaki, Fukuoka, JP;
Hideyuki Okamoto, Niihama, JP;
Yoshiyuki Tanaka, Niihama, JP;
Tsuyoshi Hirajima, Fukuoka, JP;
Keiko Sasaki, Fukuoka, JP;
Sumitomo Metal Mining Co., Ltd., Tokyo, JP;
Kyushu University, National University Corporation, Fukuoka-Shi, JP;
Abstract
Disclosed herein is a method for separating an arsenic mineral from a copper-bearing material, including the steps of grinding a copper-bearing material containing arsenic, adding water to the copper-bearing material to prepare a slurry, and adding a flotation agent including a depressant, a frother, and a collector to the slurry and blowing air into the slurry for performing flotation to obtain a copper concentrate, wherein the depressant is a chelator. As the chelator, a polyethyleneamine or the like is used. Particularly, when triethylenetetramine is used as the chelator, the amount of triethylenetetramine to be added is preferably 1 to 10 equivalents relative to the amount of soluble copper generated by oxidation of the copper-bearing material, and the pH of the slurry is more preferably adjusted to 7 or more but 8 or less before the slurry is subjected to the flotation.