Arsenic removal in low-grade fluorite by using mineral processing techniques (第7回資源リサイクル・材料科学に関する日韓国際シンポジウム特集)
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概要
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A high grade of fluorite ore is necessary to produce hydrogen fluoride (HF) that is changed to fluoro-resin and then used in the semiconductor manufacturing. With the continues depletion of resources, novel technologies for processing low-grade fluorite ores are urgently needed, in order to lower the arsenic concentration to less than 100 mg/kg. In this study, a low-grade flotation concentrated fluorite ore, imported from Mexico, was upgraded by removing arsenic, which is difficult to be decreased by conventional method. The micro-bubble flotation, liquid-liquid separation and mechano-chemical leaching of fluorite ore were carried out to investigate the removal of arsenic from the low-grade fluorite. Experimental results showed that the arsenic concentration was reduced to less than 100 mg/kg.
著者
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Dodbiba Gjergj
Graduate School Of Engineering The University Of Tokyo
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Dodbiba Gjergj
Department Of Geosystem Engineering School Of Engineering The University Of Tokyo
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Dodbiba Gjergj
Department Of Systems Innovation The University Of Tokyo
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Fujita Toyohisa
Department of Systems Innovation, Graduate School of Engineering, The University of Tokyo
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Park Hyun
Department of Systems Innovation, Graduate School of Engineering, The University of Tokyo
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HIGASHINO Koji
Department of Systems Innovation, Graduate School of Engineering, The University of Tokyo
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MATSUO Seiji
Department of Systems Innovation, Graduate School of Engineering, The University of Tokyo
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Matsuo Seiji
Department Of Systems Innovation The University Of Tokyo
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FUJITA Toyohisa
Akita University SVBL
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Fujita Toyohisa
Dep. Of Geosystem Engineering School Of Engineering The Univ. Of Tokyo
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Fujita Toyohisa
Department Of Systems Innovation The University Of Tokyo
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Fujita Toyohisa
Department Of Geosciences Mining Engineering And Materials Processing Akita University
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Park Hyun
Department Of Computer Science Korea Advanced Institute Of Science & Technology
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Higashino Koji
Department Of Gastrointestinal Oncology Osaka Medical Center For Cancer And Cardiovascular Disease
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Matsuo Seiji
Department Of Systems Innovation Graduate School Of Engineering The University Of Tokyo
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Park Hyun
Department Of Chemical & Biomolecular Engineering Korea Advanced Institute Of Science & Tech
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Park Hyun
Department Of Ceramic Engineering Chonnam National University
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Park Hyun
Department of Biotechnology, Yeungnam University
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