首页|Effect of hydrogen peroxide on selective flotation of chalcocite and enargite

Effect of hydrogen peroxide on selective flotation of chalcocite and enargite

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Enargite is typically associated with chalcocite.Owing to the similarity in the flotation behaviors of these minerals,both minerals are reported to concentrate in the conventional flotation circuit.However,inor-ganic arsenic in enargite can decrease the copper concentrate quality and increase the operating cost of processing this concentrate.Separating these minerals is important for cleaner copper production to avoid these effects.In this context,this study investigated the effect of hydrogen peroxide(H2O2)treat-ment on the flotation behavior of chalcocite and enargite.Flotation tests of pure and mixed minerals indi-cated that H2O2 treatment reduced the floatability of chalcocite and enargite by forming sulfate and copper hydroxide on their surfaces.Despite the detrimental effect of the H2O2 treatment,there was a nar-row window of H2O2 concentration for separating both minerals,in which enargite floated and chalcocite was depressed.This selective flotation behavior was caused by the rapid adsorption of potassium amyl xanthate(KAX)and lower surface oxidation of enargite compared with that of chalcocite.

EnargiteChalcociteHydrogen peroxidePotassium amyl xanthateSelective flotation

Gde Pandhe Wisnu Suyantara、Daniyarov Berdakh、Hajime Miki、Tsuyoshi Hirajima、Keiko Sasaki、Daishi Ochi、Yuji Aoki

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Department of Earth Resources Engineering,Faculty of Engineering,Kyushu University,Fukuoka 819-0395,Japan

Kyushu University Institute for Asian and Oceanian Studies,Kyushu University,Fukuoka 819-0395,Japan

Graduate School of Engineering,Faculty of Engineering,Kyushu University,Fukuoka 819-0395,Japan

Uzbekistan-Japan Innovation Center of Youth,Tashkent 100095,Uzbekistan

Sumitomo Metal Mining Co.,Ltd.,Tokyo 105-8716,Japan

Sumitomo Metal Mining Co.,Ltd.,Ehime 792-0002,Japan

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Sumitomo Metal Mining Co.,Ltd.,Japan International Cooperation Agency(JICA)a Grantin-Aid for Science Research(JSPS KAKENHI)from the Japan Society for the Promotion of Science(JSPS)a Grantin-Aid for Science Research(JSPS KAKENHI)from the Japan Society for the Promotion of Science(JSPS)a Grantin-Aid for Science Research(JSPS KAKENHI)from the Japan Society for the Promotion of Science(JSPS)Advanced Research Infrastructure for Materials and NanotechnologyMinistry of Education,Culture,Sports,Science and Technology(MEXT) Japan

JP22K14636JP22H00310JP19H02659JPMXP1222KU1009

2023

10.1016/j.ijmst.2023.01.002

矿业科学技术学报(英文版)
中国矿业大学

矿业科学技术学报(英文版)

CSTPCDCSCD北大核心EI
影响因子：1.222
ISSN：2095-2686
年,卷(期)：2023.33(6)
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