Title:
METHOD FOR SEPARATING ARSENIC MINERAL FROM COPPER MATERIAL WITH HIGH ARSENIC CONTENT
Document Type and Number:
WIPO Patent Application WO/2011/096479
Kind Code:
A1
Abstract:
A method for separating arsenic mineral from a copper material having a high arsenic content, which comprises pulverizing the copper material containing arsenic, adding water thereto to form a slurry and then adding to the slurry a flotation agent, which comprises an inhibitor, a frothing agent and a collector, and bubbling air thereto to conduct flotation dressing, wherein a chelating agent such as a polyethyleneamine is used as the inhibitor. In the case of using triethylenetetramine as the chelating agent, in particular, it is preferred to add 1 to 10 equivalents of triethylenetetramine relative to the amount of soluble copper formed by the oxidation of the copper material. In this case, it is further preferred to adjust the slurry, before the flotation dressing, to pH 7 to 8 inclusive. Thus, arsenic mineral can be efficiently separated from a copper material containing arsenic, such as a copper ore or a refined copper ore, and a refined copper ore having a low arsenic content can be obtained.
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Inventors:
OKAMOTO HIDEYUKI (JP)
TANAKA YOSHIYUKI (JP)
HIRAJIMA TSUYOSHI (JP)
SASAKI KEIKO (JP)
TANAKA YOSHIYUKI (JP)
HIRAJIMA TSUYOSHI (JP)
SASAKI KEIKO (JP)
Application Number:
PCT/JP2011/052251
Publication Date:
August 11, 2011
Filing Date:
February 03, 2011
Export Citation:
Assignee:
SUMITOMO METAL MINING CO (JP)
UNIV KYUSHU NAT UNIV CORP (JP)
OKAMOTO HIDEYUKI (JP)
TANAKA YOSHIYUKI (JP)
HIRAJIMA TSUYOSHI (JP)
SASAKI KEIKO (JP)
UNIV KYUSHU NAT UNIV CORP (JP)
OKAMOTO HIDEYUKI (JP)
TANAKA YOSHIYUKI (JP)
HIRAJIMA TSUYOSHI (JP)
SASAKI KEIKO (JP)
International Classes:
B03D1/001; C09K3/00; C09K23/38; C22B1/11; C22B15/00
Foreign References:
| JPS6022953A | 1985-02-05 | |||
| JPS5358403A | 1978-05-26 | |||
| JP2005513259A | 2005-05-12 | |||
| JP2006239553A | 2006-09-14 |
Other References:
D. FORNASIERO ET AL.: "Separation of enargite and tennantite from non- arsenic copper sulfide minerals by selective oxidation or dissolution.", INT. J. MINER. PROCESS., vol. 61, 2001, pages 109 - 119
KAGAKU DAIJITEN HENSHU IINKAI: "Kagaku Daijiten 7", 10 September 1976, KYORITSU SHUPPAN CO., LTD, pages: 929
KAGAKU DAIJITEN HENSHU IINKAI: "Kagaku Daijiten 7", 10 September 1976, KYORITSU SHUPPAN CO., LTD, pages: 929
Attorney, Agent or Firm:
TSUJIKAWA MICHINORI (JP)
Patent attorney Tsujikawa 典範 (JP)
Patent attorney Tsujikawa 典範 (JP)
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Claims: