11:00 〜 11:15
[2603] 電解質及び捕収剤を含む溶液中における輝水鉛鉱と黄銅鉱表面への気泡衝突と付着挙動
司会:芳賀一寿(秋田大学)
キーワード:chalcopyrite, molybdenite, bubble-particle interaction, kerosene, MgCl2
In copper-molybdenite (Cu-Mo) conventional flotation circuit, molybdenite is collected as froth product by adding collectors while chalcopyrite is depressed by adding sodium hydrosulphide as depressant. In order to have an effective flotation, molybdenite particles need to form a stable bubble-particle aggregates while moving to the froth layer. Understanding the mechanism of bubble-particle interaction in the presence of a collector is one of the key factors to improve the selectivity of Cu-Mo flotation process. This work investigated the effect of kerosene as collector on bubble interaction with molybdenite and chalcopyrite surface in MgCl2 solution at pH 6. Bubble-particle interaction such as bubble collision, bounce, and attachment to the mineral surfaces was captured using a high-speed camera. It was found that after several collisions, bubble could displace the intervening liquid film on mineral surface and form a three-phase contact (TPC) faster in the presence of kerosene in 0.01 M MgCl2 at pH 6 for both minerals. The reason is because kerosene increases surface hydrophobicity and destabilizes the intervening liquid layer on mineral surface.
講演PDFファイルダウンロードパスワード認証
講演集に収録された講演PDFファイルのダウンロードにはパスワードが必要です。
現在有効なパスワードは、[資源・素材学会会員専用パスワード]です。
※[資源・素材学会会員専用パスワード]は【会員マイページ】にてご確認ください。(毎年1月に変更いたします。)
[資源・素材学会会員専用パスワード]を入力してください