FLOTATION METHOD FOR RESTRAINING FLOATABILITY OF PYRITE
Patent code | P08P006159 |
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File No. | P2007-039 /L19-H011 |
Posted date | Feb 20, 2009 |
Application number | P2007-193202 |
Publication number | P2009-028597A |
Patent number | P5188118 |
Date of filing | Jul 25, 2007 |
Date of publication of application | Feb 12, 2009 |
Date of registration | Feb 1, 2013 |
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Title | FLOTATION METHOD FOR RESTRAINING FLOATABILITY OF PYRITE |
Abstract |
PROBLEM TO BE SOLVED: To provide a flotation method with which floatability of pyrite for sulfide minerals containing valuable metals contained in an ore is restrained, so that a high-grade purified ore can be efficiently recovered. SOLUTION: The flotation method with which the high-grade purified ore is recovered while restraining the floatability of pyrite contained in the ore, comprises adding an aqueous solution which contains an aromatic compound having at least two adjacent hydroxyl groups together with titanium or silicon to the slurry of the original ore as a restraining agent for restraining the floatability of pyrite. |
Outline of related art and contending technology |
(In Japanese)
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Field of industrial application |
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Scope of claims |
(In Japanese) 【請求項1】 鉱石に含まれる黄鉄鉱の浮遊性を抑制しながら高品位精鉱を回収する浮遊選鉱方法であって、 前記鉱石のスラリーに、浮遊性の抑制剤として、チタン又は珪素とともに少なくとも2個の隣接したヒドロキシル基を有する芳香族化合物を含む水溶液を添加することを特徴とする浮遊選鉱方法。 【請求項2】 前記芳香族化合物は、カテコールであることを特徴とする請求項1に記載の浮遊選鉱方法。 【請求項3】 前記鉱石のスラリーのpHは、抑制剤の添加後に3~5であることを特徴とする請求項1又は2に記載の浮遊選鉱方法。 【請求項4】 前記鉱石は、銅、ニッケル、鉛、又は亜鉛から選ばれる少なくとも1種の金属を含む硫化鉱物と、共存する黄鉄鉱及びその他の脈石鉱物を含むものであることを特徴とする請求項1~3のいずれかに記載の浮遊選鉱方法。 |
IPC(International Patent Classification) |
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State of application right | Registered |
Contact Information for " FLOTATION METHOD FOR RESTRAINING FLOATABILITY OF PYRITE"
- National University Corporation Hokkaido University Institute for the Promotion of Business-Regional Collaboration
- URL: http://www.mcip.hokudai.ac.jp/cms/cgi-bin/index.pl?view_category_lang=2
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E-mail:
- Address: Kita 21-jyo Nishi 11-chome, Kita-ku, Sapporo-shi,Hokkaido, Japan , 001-0021
- Fax: 81-11-706-9550