Improvement of flotation and suppression of pyrite oxidation using phosphate-enhanced galvanic microencapsulation (GME) in a ball mill with steel ball media

Seng, Sophea; Tabelin, Carlito Baltazar; Makino, Yuta; Chea, Monyneath; Phengsaart, Theerayut; Park, Ilhwan; Hiroyoshi, Naoki; Ito, Mayumi

Improvement of flotation and suppression of pyrite oxidation using phosphate-enhanced galvanic microencapsulation (GME) in a ball mill with steel ball media

Seng, Sophea; Tabelin, Carlito Baltazar; Makino, Yuta et al.

Minerals engineering, 2019, 143, 105931

Permalink : https://hdl.handle.net/2115/83116

このアイテムのアクセス数:488件（2026-10-17 08:05 集計）

閲覧可能ファイル

ファイル	フォーマット	サイズ	閲覧回数	説明
Manuscript	pdf	382 KB	530

論文情報

ファイル出力 EndNote Basic出力 Mendeley出力

アクセス権	open access
URI	https://hdl.handle.net/2115/83116
タイトル	Improvement of flotation and suppression of pyrite oxidation using phosphate-enhanced galvanic microencapsulation (GME) in a ball mill with steel ball media
著者	Seng, Sophea ; Tabelin, Carlito Baltazar ; Makino, Yuta ; Chea, Monyneath ; Phengsaart, Theerayut ; Park, Ilhwan ; Hiroyoshi, Naoki ; Ito, Mayumi
著者名 Seng, Sophea
著者名 Tabelin, Carlito Baltazar
著者名 Makino, Yuta
著者名 Chea, Monyneath
著者名 Phengsaart, Theerayut
著者名 Park, Ilhwan
e-Rad_Researcher 50250486 著者名 Hiroyoshi, Naoki
e-Rad_Researcher 10339690 著者名 Ito, Mayumi
言語	英語
キーワード	Galvanic interactions
	Galvanic microencapsulation
	Ball mill
	Flotation
	Pyrite
	Passivation
発行日	2019-11
出版者	Elsevier
収録物名	Minerals engineering
巻(号)	143
ページ	105931
抄録	Acid mine drainage (AMD) is one of the biggest and most challenging environmental concerns of the mining and mineral processing industries. In our previous study, we reported a new and promising approach to passivate sulfide minerals and limit AMD formation called galvanic microencapsulation (GME), a technique that forms protective coatings via galvanic interactions between sulfide minerals (e.g., pyrite) and metal powders (e.g., zero-valent iron and aluminum). In this paper, the possible application of GME in a ball mill with steel ball media and phosphate to suppress pyrite floatability during coal cleaning and limit pyrite oxidation after disposal is proposed. The results showed that adding phosphate and maintaining sufficient oxygen supply during GME treatment in the ball mill passivated pyrite and suppressed its oxidation via the formation of protective iron phosphate coatings. Moreover, the iron phosphate coatings on pyrite made the mineral more hydrophilic, which improved the separation efficiency during coal flotation.
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
権利情報	© 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
PISSN	0892-6875
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.1016/j.mineng.2019.105931