Effect of hydrogen peroxide on separation of chalcopyrite and molybdenite using flotation

Gde Pandhe Wisnu Suyantara, Tsuyoshi Hirajima, Hajime Miki, Keiko Sasaki

Research output: Contribution to conferencePaper

Abstract

Various oxidation treatments (i.e., plasma, and ozone) have been applied to separate molybdenite from other sulfide metals. However, plasma and ozone treatments exhibit stronger oxidation on chalcopyrite and molybdenite, reducing the separation selectivity of both minerals in flotation tests. On the other hand, hydrogen peroxide (H 2 O 2 ) is frequently used as an oxidizing agent in wastewater treatment. It has also been reported to reduce the recovery of sulfide minerals. Therefore, the effect of H 2 O 2 on separation of chalcopyrite and molybdenite was investigated in this study. Contact angle readings and surface images using atomic force microscopy (AFM) showed that chalcopyrite surface was more sensitive to surface oxidation compared to that of molybdenite in H 2 O 2 aqueous solution. The floatability test of single mineral confirmed the contact angle results and AFM images, indicating a possibility for selective separation of chalcopyrite and molybdenite using a H 2 O 2 aqueous solution. In addition, iron was used to improve the oxidation performance of H 2 O 2 and its effect on the selective flotation of chalcopyrite and molybdenite is intensively studied in this work.

Original languageEnglish
Publication statusPublished - Jan 1 2017
Event14th International Symposium on East Asian Resources Recycling Technology, EARTH 2017 - Sapporo, Hokkaido, Japan
Duration: Sep 26 2017Sep 29 2017

Conference

Conference14th International Symposium on East Asian Resources Recycling Technology, EARTH 2017
CountryJapan
CitySapporo, Hokkaido
Period9/26/179/29/17

Fingerprint

molybdenite
chalcopyrite
hydrogen peroxide
oxidation
atomic force microscopy
mineral
aqueous solution
ozone
sulfide
plasma
effect
flotation
iron
metal

All Science Journal Classification (ASJC) codes

  • Environmental Science(all)

Cite this

Wisnu Suyantara, G. P., Hirajima, T., Miki, H., & Sasaki, K. (2017). Effect of hydrogen peroxide on separation of chalcopyrite and molybdenite using flotation. Paper presented at 14th International Symposium on East Asian Resources Recycling Technology, EARTH 2017, Sapporo, Hokkaido, Japan.

Effect of hydrogen peroxide on separation of chalcopyrite and molybdenite using flotation. / Wisnu Suyantara, Gde Pandhe; Hirajima, Tsuyoshi; Miki, Hajime; Sasaki, Keiko.

2017. Paper presented at 14th International Symposium on East Asian Resources Recycling Technology, EARTH 2017, Sapporo, Hokkaido, Japan.

Research output: Contribution to conferencePaper

Wisnu Suyantara, GP, Hirajima, T, Miki, H & Sasaki, K 2017, 'Effect of hydrogen peroxide on separation of chalcopyrite and molybdenite using flotation' Paper presented at 14th International Symposium on East Asian Resources Recycling Technology, EARTH 2017, Sapporo, Hokkaido, Japan, 9/26/17 - 9/29/17, .
Wisnu Suyantara GP, Hirajima T, Miki H, Sasaki K. Effect of hydrogen peroxide on separation of chalcopyrite and molybdenite using flotation. 2017. Paper presented at 14th International Symposium on East Asian Resources Recycling Technology, EARTH 2017, Sapporo, Hokkaido, Japan.
Wisnu Suyantara, Gde Pandhe ; Hirajima, Tsuyoshi ; Miki, Hajime ; Sasaki, Keiko. / Effect of hydrogen peroxide on separation of chalcopyrite and molybdenite using flotation. Paper presented at 14th International Symposium on East Asian Resources Recycling Technology, EARTH 2017, Sapporo, Hokkaido, Japan.
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