Separation mechanism of tennantite and chalcopyrite with flotation after oxidation using oxygen

Himawan T.B.M. Petrus, Tsuyoshi Hirajima, Keiko Sasaki, Hideyuki Okamoto

研究成果: 会議への寄与タイプ論文

抄録

Flotation of arseno bearing minerals from their copper ore has been an interest due to the increasing awareness on protecting the environment by minimizing the possibility of exposed arsenic compound. Some approaches have been proposed, but the mechanisms of separations have not yet fully understood. In this study, oxidation using oxygen was applied. Instead of the complex copper ore flotation results, pure single mineral of tennantite and chalcopyrite foatability was conducted using Hallimond tube. Resembled with the flotation results of copper concentrate containing tennantite, the separation possessed the best result at alkaline condition (pH 11) at where the arsenic content was reduced from 3300 ppm to 1800 ppm. In order to be able to understand the mechanism of the separation atomic force microscope (AFM) was utilized. AFM images showed changes in morphology and behavior when minerals were treated in both acid and alkaline condition. It was found that the morphological change showed the reaction products representing the rate of reactivity of tennantite and chalcopyrite. From the measured force of adhesion, it can be observed that in alkaline condition the surface of both minerals is more hydrophilic than that in acidic condition possessing higher value. This is in accordance with the X-ray photoelectron spectroscopy (XPS) spectra in which hydroxide moieties occupied the mineral surface in alkaline condition while elemental sulfur is in acidic condition.

元の言語英語
出版物ステータス出版済み - 1 1 2014
イベント27th International Mineral Processing Congress, IMPC 2014 - Santiago, チリ
継続期間: 10 20 201410 24 2014

その他

その他27th International Mineral Processing Congress, IMPC 2014
チリ
Santiago
期間10/20/1410/24/14

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tennantite
Flotation
chalcopyrite
Minerals
Oxygen
oxidation
Oxidation
oxygen
mineral
Copper
copper
Ores
arsenic
Microscopes
Bearings (structural)
Arsenic compounds
Arsenicals
Arsenic
adhesion
Reaction products

All Science Journal Classification (ASJC) codes

  • Earth-Surface Processes
  • Geochemistry and Petrology
  • Geotechnical Engineering and Engineering Geology
  • Mechanical Engineering

これを引用

Petrus, H. T. B. M., Hirajima, T., Sasaki, K., & Okamoto, H. (2014). Separation mechanism of tennantite and chalcopyrite with flotation after oxidation using oxygen. 論文発表場所 27th International Mineral Processing Congress, IMPC 2014, Santiago, チリ.

Separation mechanism of tennantite and chalcopyrite with flotation after oxidation using oxygen. / Petrus, Himawan T.B.M.; Hirajima, Tsuyoshi; Sasaki, Keiko; Okamoto, Hideyuki.

2014. 論文発表場所 27th International Mineral Processing Congress, IMPC 2014, Santiago, チリ.

研究成果: 会議への寄与タイプ論文

Petrus, HTBM, Hirajima, T, Sasaki, K & Okamoto, H 2014, 'Separation mechanism of tennantite and chalcopyrite with flotation after oxidation using oxygen', 論文発表場所 27th International Mineral Processing Congress, IMPC 2014, Santiago, チリ, 10/20/14 - 10/24/14.
Petrus HTBM, Hirajima T, Sasaki K, Okamoto H. Separation mechanism of tennantite and chalcopyrite with flotation after oxidation using oxygen. 2014. 論文発表場所 27th International Mineral Processing Congress, IMPC 2014, Santiago, チリ.
Petrus, Himawan T.B.M. ; Hirajima, Tsuyoshi ; Sasaki, Keiko ; Okamoto, Hideyuki. / Separation mechanism of tennantite and chalcopyrite with flotation after oxidation using oxygen. 論文発表場所 27th International Mineral Processing Congress, IMPC 2014, Santiago, チリ.
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