TY - JOUR
T1 - Effect of sodium metabisulfite and slaked lime on the floatability and surface properties of chalcopyrite
AU - Suyantara, Gde Pandhe Wisnu
AU - Semoto, Yuki
AU - Miki, Hajime
AU - Hirajima, Tsuyoshi
AU - Sasaki, Keiko
AU - Ochi, Daishi
AU - Aoki, Yuji
AU - Berdakh, Daniyarov
AU - Ura, Kumika
N1 - Funding Information:
This work was supported by Sumitomo Metal Mining Co., Ltd. , Japan; Japan International Cooperation Agency (JICA), Japan; and a Grant-in-Aid for Science Research (JSPS KAKENHI) from the Japan Society for the Promotion of Science (JSPS), Japan [Grant numbers JP22K14636 , JP22H00310 , and JP19H02659 ].
Funding Information:
This work was supported by Sumitomo Metal Mining Co. Ltd., Japan; Japan International Cooperation Agency (JICA), Japan; and a Grant-in-Aid for Science Research (JSPS KAKENHI) from the Japan Society for the Promotion of Science (JSPS), Japan [Grant numbers JP22K14636, JP22H00310, and JP19H02659].
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/8
Y1 - 2022/8
N2 - In the flotation of complex copper ores containing chalcopyrite in seawater, sodium metabisulfite (SMBS) has been widely used as a pyrite depressant. Here, calcium ions in seawater or in process water because of pH control using lime (CaO) or slaked lime (Ca(OH)2) can affect the floatability of chalcopyrite. However, the effect of SMBS on the floatability of chalcopyrite in the presence of calcium ions is unknown. Therefore, the current study investigated the flotation behavior and surface properties of chalcopyrite after treatment with SMBS in the absence and presence of Ca(OH)2. The flotation experiments demonstrated that both SMBS treatment and the addition of Ca(OH)2 exhibited a depressing effect on the natural floatability of chalcopyrite. This depressing effect of SMBS and Ca(OH)2 on the floatability of chalcopyrite was significantly decreased in the presence of potassium amyl xanthate (PAX). However, the combination of SMBS treatment and Ca(OH)2 formed calcium sulfite (CaSO3) on the surface of chalcopyrite, which significantly reduced the recovery of chalcopyrite from 97% to 66% when in the presence of PAX and at a pH of 9.
AB - In the flotation of complex copper ores containing chalcopyrite in seawater, sodium metabisulfite (SMBS) has been widely used as a pyrite depressant. Here, calcium ions in seawater or in process water because of pH control using lime (CaO) or slaked lime (Ca(OH)2) can affect the floatability of chalcopyrite. However, the effect of SMBS on the floatability of chalcopyrite in the presence of calcium ions is unknown. Therefore, the current study investigated the flotation behavior and surface properties of chalcopyrite after treatment with SMBS in the absence and presence of Ca(OH)2. The flotation experiments demonstrated that both SMBS treatment and the addition of Ca(OH)2 exhibited a depressing effect on the natural floatability of chalcopyrite. This depressing effect of SMBS and Ca(OH)2 on the floatability of chalcopyrite was significantly decreased in the presence of potassium amyl xanthate (PAX). However, the combination of SMBS treatment and Ca(OH)2 formed calcium sulfite (CaSO3) on the surface of chalcopyrite, which significantly reduced the recovery of chalcopyrite from 97% to 66% when in the presence of PAX and at a pH of 9.
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U2 - 10.1016/j.powtec.2022.117750
DO - 10.1016/j.powtec.2022.117750
M3 - Article
AN - SCOPUS:85134886741
SN - 0032-5910
VL - 408
JO - Powder Technology
JF - Powder Technology
M1 - 117750
ER -