高ヒ素含有銅鉱石ミネラルプロセシングのイノベーション

2015 Fiscal Year Annual Research Report

• Project/Area Number: 15H02333
• Research Institution: Kyushu University
• Principal Investigator: 平島 剛 九州大学, 工学(系)研究科(研究院), 教授 (00175556)
• Co-Investigator(Kenkyū-buntansha): 笹木 圭子 九州大学, 工学(系)研究科(研究院), 教授 (30311525) ; 沖部 奈緒子 九州大学, 工学(系)研究科(研究院), 准教授 (30604821) ; 三木 一 九州大学, 学内共同利用施設等, 助教 (10706386)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 浮選 / ヒ素 / 黄銅鉱 / 輝水鉛鉱 / リーチング / 溶出抑制 / ミネラルプロセッシング / 分離

Outline of Annual Research Achievements

銅－モリブデン鉱石の浮選分離について電気化学的な検討を行い、酸化、水洗い後に浮選を行うことが有効であることを明らかにした。また、高速度カメラを用いた微細気泡と鉱物のカラム型付着挙動解析システムとソフトを開発した。
含ヒ素硫化銅鉱物の浸出反応の電位依存性を浸出実験および電気化学的手法により調べ、硫ヒ銅鉱の浸出は電位依存性を示すこと、電位制御と銀添加により硫ヒ銅鉱の高速浸出が可能であることを明らかにした。
中度好熱性・鉄/硫黄酸化菌群から成るmixed cultureを使用して45℃にて硫ヒ銅鉱のバイオリーチング試験を行ったところ、Ag無添加系においては共存する黄鉄鉱からFeが全て溶出し、硫ヒ銅鉱からのCuの溶出が45%に留まったのに対して、Agを適量添加した系では黄鉄鉱からのFe溶出が抑制され、選択的に硫ヒ銅鉱からのCu溶出が進行した（最終的に99%に到達）。バイオリーチング中には赤色のAgとAsを含む硫化物が二次鉱物として生成した。その他鉄濃度変化などの挙動から、Ag存在下で硫ヒ銅鉱が還元的に溶解する機構が存在することが示唆された。バイオリーチング中のAsの不動化機構も含めて、次年度更に研究を進める。
Carrier Micro Encapsulation(CME）の低コスト処理を可能にするために低品位炭の水熱処理により排出されるカテコールを含む廃液（HTL）とSi試薬との混合溶液（Si-HTL）で黄鉄鉱を処理し、黄鉄鉱の長期溶出試験を鉄酸化細菌存在下で行なった。Si-HTLで黄鉄鉱を処理したものは，未処理の黄鉄鉱、カテコール試薬とSi試薬混合溶液（Si-Cat）で処理したものより強い溶出抑制を示すことを明らかにした。各種電気化学的手法（電位走査法，定電位測定法，インピーダンス分析法）を用いてSi被覆処理後の黄鉄鉱溶出抑制に関する挙動の解析を行った。

Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

今年度の研究実施計画をほぼ終了した。また、黄銅鉱と輝水鉛鉱や含ヒ素鉱物の新たな分離方法を見出していることから、おおむね順調に進展していると判断する。

Strategy for Future Research Activity

難処理硫化鉱の新しい分離方法を見出してきていることから、今後はこれらの分離方法の実用化も含め研究を行っていく予定である。

Research Products

• [Journal Article] Hydrothermal Treatment Coupled with Mechanical Expression for Loy Yang Lignite Dewatering and the Microscopic Description of the Process (2016)
  • Author(s): Xiangchun LIU, Tsuyoshi HIRAJIMA, Moriyasu NONAKA, Keiko SASAKI
  • Journal Title: Drying Technology Volume: Vol.34 Pages: pp.1471-1483
  • DOI: DOI:10.1080/07373937.2015.1127933
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Comparison of Effectiveness of Citric Acid and Other Acids in Leaching of Low-grade Indonesian Saprolitic Ores (2016)
  • Author(s): Widi ASTUTI, Tsuyoshi HIRAJIMA, Keiko SASAKI, Naoko OKIBE
  • Journal Title: Minerals Engineering Volume: Vol.85 Pages: 1-16
  • Peer Reviewed
• [Journal Article] Use of FTIR Combined with Forms of Water to Study the Changes in Hydrogen Bonds During Low-temperature Heating of Lignite (2016)
  • Author(s): Xiangchun LIU, Tsuyoshi HIRAJIMA, Moriyasu NONAKA, Anggoro Tri MURSITO, Keiko SASAKI
  • Journal Title: Drying Technology Volume: Vol.34, No.2 Pages: 185-193
  • DOI: 10.1080/07373937.2015.1026984
  • Peer Reviewed
• [Journal Article] Influence of Mg Components in Hydroxylated Calcined Dolomite to (co-)precipitation of Fluoride with Apatites (2016)
  • Author(s): Kenta TOSHIYUKI, Shugo NAGATO, Tsuyoshi HIRAJIMA, Keiko SASAKI, Takuro NARUSE, Takeshi KAWASHIMA
  • Journal Title: Chemical Engineering Journal Volume: Vol.285 Pages: 487-496
  • DOI: 10.1016/j.cej.2015.10.029, 2016
  • Peer Reviewed
• [Journal Article] Removal Mechanism of High Concentration Borate by Co-precipitation with Hydroxyapatite (2016)
  • Author(s): Keiko SASAKI, Kenta TOSHIYUKI, Keiko IDETA, Hajime MIKI, Tsuyoshi HIRAJIMA, Jin MIYAWAKI, Mitsuhiro MURAYAMA, Ismaila DABO
  • Journal Title: Journal of Environmental Chemical Engineering Volume: Vol.4, Issue1 Pages: 1092-1101
  • DOI: 10.1016/j.jece.2016.01.012
  • Peer Reviewed
• [Journal Article] 信号処理と判別分析法を用いた廃蛍光管の分類 (2016)
  • Author(s): 太屋岡篤憲, 太屋岡恵里子, 平島剛, 笹木圭子
  • Journal Title: Journal of MMIJ Volume: Vol.132, No.3 Pages: 53-58
  • DOI: 10.2473/journalofmmij.132.53
  • Peer Reviewed
• [Journal Article] Effect of Hydrothermal Treatment Coupled with Mechanical Compression on Equilibrium Water Content of Loy Yang Lignite and Mechanism (2016)
  • Author(s): Xiangchun LIU, Tsuyoshi HIRAJIMA, Moriyasu NONAKA, Keiko SASAKI
  • Journal Title: Materials Transactions Volume: Vol.57, 6 Pages: -
  • DOI: -
  • Peer Reviewed
• [Journal Article] Rapid Synthesis of LDHs Using Dolomite as a Magnesium Source and Application to Borate Removal (2015)
  • Author(s): Xinhong QIU, Mari YOSHIDA, Tsuyoshi HIRAJIMA, Keiko SASAKI
  • Journal Title: Materials Transactions Volume: Vol. 56, No. 2 Pages: 224-228
  • DOI: 10.2320/matertrans.M-M2014844
  • Peer Reviewed
• [Journal Article] Hydrothermal Treatment of Lignite for CO2 Gasification (2015)
  • Author(s): Moriyasu NONAKA, Tsuyoshi HIRAJIMA, Satoshi KUMAGAI, Keiko SASAKI
  • Journal Title: Journal of MMIJ Volume: Vol.131, No.5 Pages: 219-225
  • Peer Reviewed
• [Journal Article] Upgrading and CO2 Gasification of Low Quality Carbonaceous Materials (2015)
  • Author(s): Moriyasu NONAKA, Tsuyoshi HIRAJIMA
  • Journal Title: Journal of the Japan Institute of Energy Volume: Vol.94 Pages: 460-467
  • Peer Reviewed
• [Journal Article] Mechanism of Boron Uptake by Hydrocalumite Calcined at Different Temperatures (2015)
  • Author(s): Xinhong QIU, Keiko SASAKI, Yu TAKAKI, Tsuyoshi Hirajima, Keiko IDETA, Jin MIYAWAKI
  • Journal Title: Journal of Hazardous Materials Volume: Vol.287 Pages: 268-277
  • DOI: 10.1016/j.jhazmat.2015.01.066, 2015
  • Peer Reviewed
• [Journal Article] Kinetics of Nickel Extraction from Indonesian Saprolitic Ore by Citric Acid Leaching under Atmospheric Pressure (2015)
  • Author(s): Widi ASTUTI, Tsuyoshi HIRAJIMA, Keiko SASAKI, Naoko OKIBE
  • Journal Title: Minerals & Metallurgical Processing Volume: Vol. 32, No. 3 Pages: 176-185
  • Peer Reviewed
• [Journal Article] Investigation of the Changes in Hydrogen Bonds During Low-Temperature Pyrolysis of Lignite by Diffuse Reflectance FT-IR Combined with Forms of Water (2015)
  • Author(s): Xiangchun LIU, Tsuyoshi HIRAJIMA, Moriyasu NONAKA, Keiko SASAKI
  • Journal Title: Industrial & Engineering Chemistry Research Volume: Vol.54 Pages: 8971-8978
  • DOI: 10.1021/acs.iecr.5b02474
  • Peer Reviewed
• [Journal Article] Selenium (Se) Removal from Copper Refinery Wastewater Using a Combination of Zero-Valent Iron (ZVI) and Se(VI)-Reducing Bacterium, Thaurea selenatis (2015)
  • Author(s): Naoko OKIBE, Kiyomasa SUEISHI, Mikoto KOGA, Yusei MASAKI, Tsuyoshi HIRAJIMA, Keiko SASAKI, Shinichi HEGURI, Satoshi ASANO
  • Journal Title: Materials Transactions Volume: Vol. 56, No. 6 Pages: 889-894
  • DOI: 10.2320/matertrans.M2014457
  • Peer Reviewed
• [Journal Article] Silicate Covering Layer on Pyrite Surface in the Presence of Silicon-Catechol Complex for Acid Mine Drainage Prevention (2015)
  • Author(s): Mutia Dewi YUNIATI, Tsuyoshi HIRAJIMA, Hajime MIKI, Keiko SASAKI
  • Journal Title: Materials Transactions Volume: Vol.56, No.10 Pages: 1733-1741
  • DOI: 10.2320/matertrans.M-M2015821
  • Peer Reviewed
• [Journal Article] Sorption of Arsenate on MgAl and MgFe Layered Double Hydroxides Derived from Calcined Dolomite (2015)
  • Author(s): Mari YOSHIDA, Paulmanickam KOILRAJ, Xinhong QIU, Tsuyoshi HIRAJIMA Keiko SASAKI
  • Journal Title: Journal of Environmental Chemical Engineering Volume: Vol.3, Issue 3 Pages: 1614-1621
  • DOI: 10.1016/j.jece.2015.05.016, 2015
  • Peer Reviewed
• [Journal Article] Sorption Properties of Boron on Mg-Al Bimetallic Oxides Calcined at Different Temperatures (2015)
  • Author(s): Sayo MORIYAMA, Keiko SASAKI, Tsuyoshi HIRAJIMA, Keiko IDETA, Jin MIYAWAKI
  • Journal Title: Separation and Purification Technology Volume: Vol.152 Pages: 192-199
  • DOI: 10.1016/j.seppur.2015.08.023
  • Peer Reviewed
• [Journal Article] Removal Mechanism of Polymeric Borate by Calcined Layered Double Hydroxides Containing Different Divalent Metals (2015)
  • Author(s): Xinhong QIU, Keiko SASAKI
  • Journal Title: Colloids and Surfaces A: Physicochemical and Engineering Aspects Volume: Vol.482 Pages: 702-709
  • DOI: 10.1016/j.colsurfa.2015.07.036
  • Peer Reviewed
• [Journal Article] Utilization of Metabolic Citric Acid from Aspergillus niger Using Corn Starch in the Nickel Leaching of Indonesian Saprolitic Ore (2015)
  • Author(s): Widi ASTUTI, Tsuyoshi HIRAJIMA, Keiko SASAKI, Naoko OKIBE
  • Journal Title: Advanced Materials Research Volume: Vol.1130 Pages: 251-254
  • DOI: 10.4028/www.scientific.net/AMR.1130.251
  • Peer Reviewed
• [Journal Article] Effect of Cu(II) on Bio-Scorodite Crystallization Using Acidianus brierleyi (2015)
  • Author(s): Naoko OKIBE, Shiori MORISHITA, Masahito TANAKA, Tsuyoshi HIRAJIMA, Keiko SASAKI
  • Journal Title: Advanced Materials Research Volume: Vol.1130 Pages: 101-104
  • DOI: 10.4028/www.scientific.net/AMR.1130.101
  • Peer Reviewed
• [Journal Article] Suppression of Pyrite Oxidation in Acid Mine Drainage by Carrier Microencapsulation Using Liquid Product of Hydrothermal Treatment of Low-rank Coal, and Electrochemical Behavior of Resultant Encapsulating Coatings (2015)
  • Author(s): Mutia Dewi YUNIATI, Keitaro KITAGAWA, Tsuyoshi HIRAJIMA, Hajime MIKI, Naoko OKIBE, Keiko SASAKI
  • Journal Title: Hydrometallurgy Volume: Vol.158 Pages: 83-93
  • DOI: 10.1016/j.hydromet.2015.09.028
  • Peer Reviewed
• [Journal Article] Surface Characteristics of Bacillus megaterium and Its Adsorption Behavior onto Dolomite (2015)
  • Author(s): Mohsen FARAHAT, Tsuyoshi HIRAJIMA
  • Journal Title: International Journal of Biological, Biomolecular, Agricultural, Food and Biotechnological Engineering Volume: Vol.9, No.11 Pages: 1109-1116
  • Peer Reviewed
• [Journal Article] Effect of oxidized surface of tennantite and chalcopyrite on Diethyl Dithiophosphate (DTP) adsorption and the kinetics; observed using UV-Vis Spectroscopy (2015)
  • Author(s): HTBM PETRUS, Tsuyoshi HIRAJIMA, Keiko SASAKI, Hideyuki OKAMOTO
  • Journal Title: Asia Pacific Confederation of Chemical Engineering Congress 2015: APCChE 2015, incorporating CHEMECA 2015 Volume: - Pages: 1866-1872
  • Peer Reviewed
• [Journal Article] Current Situation of Heavy Metal-Pollution in Developing Country, Proceedings of International Forum for Green Asia 2015 (2015)
  • Author(s): Yusei MASAKI, Tsuyoshi HIRAJIMA, Keiko SASAKI, Naoko OKIBE
  • Journal Title: Proceedings of International Forum for Green Asia 2015, Special Issue of Evergreen - Joint Journal of Novel Carbon Resource Sciences & Green Asia Strategy Volume: - Pages: 33-34
• [Journal Article] Microbial Population Structure Analysis of Tsukahara Hot Spring in Oita and Search for Effective Microbes for Biomining and Bioremediation (2015)
  • Author(s): Masahito TANAKA, Tsuyoshi HIRAJIMA, Keiko SASAKI, Naoko OKIBE
  • Journal Title: Proceedings of International Forum for Green Asia 2015, Special Issue of Evergreen - Joint Journal of Novel Carbon Resource Sciences & Green Asia Strategy Volume: - Pages: 73-74
• [Journal Article] Effect of Hydrothermal Treatment Assisted with Mechanical Expression on Pore Structure of Loy Yang Lignite (2015)
  • Author(s): Xiangchun LIU, Tsuyoshi HIRAJIMA, Moriyasu NONAKA, Keiko SASAKI
  • Journal Title: International Symposium on Earth Science and Technology 2015 (CINEST) Volume: - Pages: 136-138
• [Journal Article] Co-Precipitation of Boron with Hydroxyapatite Using Various Ca Sources (2015)
  • Author(s): Kenta TOSHIYUKI, Tsuyoshi HIRAJIMA, Keiko SASAKI
  • Journal Title: International Symposium on Earth Science and Technology 2015 (CINEST) Volume: - Pages: 370-372
• [Journal Article] Crystallization of Biogenic Scorodite (FeAsO4･2H2O) from Acidic Wastewaters Containing Diluted Concentrations of Highly Toxic Arsenite (2015)
  • Author(s): Masahito TANAKA, Tsuyoshi HIRAJIMA, Keiko SASAKI, Kazuhiro HATANO, Atsuko OHATA, Naoko OKIBE
  • Journal Title: International Symposium on Earth Science and Technology 2015 (CINEST) Volume: - Pages: 161-162
• [Journal Article] Mechanism of Indirect Chemical Oxidation of Highly Toxic As(III), in The Presence of Carbon Fiber via Direct Microbial Fe(II) Oxidation (2015)
  • Author(s): Yuken FUKANO, Tsuyoshi HIRAJIMA, Keiko SASAKI, Naoko OKIBE
  • Journal Title: International Symposium on Earth Science and Technology 2015 (CINEST) Volume: - Pages: 163-165
• [Journal Article] Bioleaching of Highly Refractory Chalcopyrite in The Presence of Silver Catalyst (2015)
  • Author(s): Yusei MASAKI, Tsuyoshi HIRAJIMA, Keiko SASAKI, Hajime MIKI, Naoko OKIBE
  • Journal Title: International Symposium on Earth Science and Technology 2015 (CINEST) Volume: - Pages: 189-190
• [Journal Article] Selective Bioleaching of Enargite (Cu3AsS4) over Pyrite (FeS2) for Cu Recovery (2015)
  • Author(s): Keishi OYAMA, Tsuyoshi HIRAJIMA, Keiko SASAKI, Hajime MIKI, Naoko OKIBE
  • Journal Title: International Symposium on Earth Science and Technology 2015 (CINEST) Volume: - Pages: 191-192
• [Journal Article] Effect of Silver Addition in Potential Controlled Solution on Dissolution Rate of Enargite (2015)
  • Author(s): Akinobu IGUCHI, Hajime MIKI, Tsuyoshi HIRAJIMA, Keiko SASAKI
  • Journal Title: International Symposium on Earth Science and Technology 2015 (CINEST) Volume: - Pages: 95-97
• [Journal Article] Various Surface Treatment Techniques of Molybdenite and Chalcopyrite (2015)
  • Author(s): Hidekazu MATSUOKA, Tsuyoshi HIRAJIMA, Keiko SASAKI, Hajime MIKI
  • Journal Title: International Symposium on Earth Science and Technology 2015 (CINEST) Volume: - Pages: 92-94
• [Journal Article] Delaminated Layered Double Hydroxide Nanosheets for Arsenate Immobilization (2015)
  • Author(s): Yu TAKAKI, Paulmanickam KOILRAJ, Tsuyoshi HIRAJIMA, Keiko SASAKI
  • Journal Title: International Symposium on Earth Science and Technology 2015 (CINEST) Volume: - Pages: 373-375
• [Presentation] Ca(OH)2をカルシウム源としたホウ酸のハイドロキシアパタイトとの共沈による不動化機構 (2016)
  • Author(s): 笹木圭子, 利行謙汰, 平島剛
  • Organizer: 資源・素材学会 平成28(2016)年度 春季大会
  • Place of Presentation: 東京
  • Year and Date: 2016-03-28 – 2016-03-30
• [Presentation] ロイヤン炭の水熱脱水処理が気相・液相生成物に及ぼす影響 (2016)
  • Author(s): 劉祥春, 平島剛, 野中壮泰, 笹木圭子
  • Organizer: 資源・素材学会 平成28(2016)年度 春季大会
  • Place of Presentation: 東京
  • Year and Date: 2016-03-28 – 2016-03-30
• [Presentation] 表面酸化による難処理硫化鉱の分離に関する研究 (2016)
  • Author(s): 平島剛, 三木一, 松岡秀和, Suyantara G.P.W., Elmahdy A. M., 笹木圭子
  • Organizer: 資源・素材学会 平成28(2016)年度 春季大会
  • Place of Presentation: 東京
  • Year and Date: 2016-03-28 – 2016-03-30
• [Presentation] 硫砒銅鉱のバイオリーチングにおける銀触媒の影響 (2016)
  • Author(s): 小山恵史, 平島剛, 笹木圭子, 三木一, 沖部奈緒子
  • Organizer: 資源・素材学会 平成28(2016)年度 春季大会
  • Place of Presentation: 東京
  • Year and Date: 2016-03-28 – 2016-03-30
• [Presentation] ヒ素含有銅鉱石のバイオリーチングとヒ素含有製錬廃液のバイオ処理 (2016)
  • Author(s): 沖部奈緒子
  • Organizer: 資源・素材学会 平成28(2016)年度 春季大会
  • Place of Presentation: 東京
  • Year and Date: 2016-03-28 – 2016-03-30
• [Presentation] Effect of Hydrothermal Treatment Assisted with Mechanical Expression on Pore Structure of Loy Yang Lignite (2015)
  • Author(s): Xiangchun LIU, Tsuyoshi HIRAJIMA, Moriyasu NONAKA, Keiko SASAKI
  • Organizer: International Symposium on Earth Science and Technology 2015 (CINEST)
  • Place of Presentation: Fukuoka, Japan
  • Year and Date: 2015-12-03 – 2015-12-04
  • Int'l Joint Research
• [Presentation] Crystallization of Biogenic Scorodite (FeAsO4·2H2O) from Acidic Wastewaters Containing Diluted Concentrations of Highly Toxic Arsenite (2015)
  • Author(s): Masahito TANAKA, Tsuyoshi HIRAJIMA, Keiko SASAKI, Kazuhiro HATANO, Atsuko OHATA, Naoko OKIBE
  • Organizer: International Symposium on Earth Science and Technology 2015 (CINEST)
  • Place of Presentation: Fukuoka, Japan
  • Year and Date: 2015-12-03 – 2015-12-04
  • Int'l Joint Research
• [Presentation] Mechanism of Indirect Chemical Oxidation of Highly Toxic As(III), in The Presence of Carbon Fiber via Direct Microbial Fe(II) Oxidation (2015)
  • Author(s): Yuken FUKANO, Tsuyoshi HIRAJIMA, Keiko SASAKI, Naoko OKIBE
  • Organizer: International Symposium on Earth Science and Technology 2015 (CINEST)
  • Place of Presentation: Fukuoka, Japan
  • Year and Date: 2015-12-03 – 2015-12-04
  • Int'l Joint Research
• [Presentation] Bioleaching of Highly Refractory Chalcopyrite in The Presence of Silver Catalyst (2015)
  • Author(s): Yusei MASAKI, Tsuyoshi HIRAJIMA, Keiko SASAKI, Hajime MIKI, Naoko OKIBE
  • Organizer: International Symposium on Earth Science and Technology 2015 (CINEST)
  • Place of Presentation: Fukuoka, Japan
  • Year and Date: 2015-12-03 – 2015-12-04
  • Int'l Joint Research
• [Presentation] Selective Bioleaching of Enargite (Cu3AsS4) over Pyrite (FeS2) for Cu Recovery (2015)
  • Author(s): Keishi OYAMA, Tsuyoshi HIRAJIMA, Keiko SASAKI, Hajime MIKI, Naoko OKIBE
  • Organizer: International Symposium on Earth Science and Technology 2015 (CINEST)
  • Place of Presentation: Fukuoka, Japan
  • Year and Date: 2015-12-03 – 2015-12-04
  • Int'l Joint Research
• [Presentation] Effect of Silver Addition in Potential Controlled Solution on Dissolution Rate of Enargite (2015)
  • Author(s): Akinobu IGUCHI, Hajime MIKI, Tsuyoshi HIRAJIMA, Keiko SASAKI
  • Organizer: International Symposium on Earth Science and Technology 2015 (CINEST)
  • Place of Presentation: Fukuoka, Japan
  • Year and Date: 2015-12-03 – 2015-12-04
  • Int'l Joint Research
• [Presentation] Various Surface Treatment Techniques of Molybdenite and Chalcopyrite (2015)
  • Author(s): Hidekazu MATSUOKA, Tsuyoshi HIRAJIMA, Keiko SASAKI, Hajime MIKI
  • Organizer: International Symposium on Earth Science and Technology 2015 (CINEST)
  • Place of Presentation: Fukuoka, Japan
  • Year and Date: 2015-12-03 – 2015-12-04
  • Int'l Joint Research
• [Presentation] Co-Precipitation of Boron with Hydroxyapatite Using Various Ca Sources (2015)
  • Author(s): Kenta TOSHIYUKI, Tsuyoshi HIRAJIMA, Keiko SASAKI
  • Organizer: International Symposium on Earth Science and Technology 2015 (CINEST)
  • Place of Presentation: Fukuoka, Japan
  • Year and Date: 2015-12-03 – 2015-12-04
  • Int'l Joint Research
• [Presentation] Delaminated Layered Double Hydroxide Nanosheets for Arsenate Immobilization (2015)
  • Author(s): Yu TAKAKI, Paulmanickam KOILRAJ, Tsuyoshi HIRAJIMA, Keiko SASAKI
  • Organizer: International Symposium on Earth Science and Technology 2015 (CINEST)
  • Place of Presentation: Fukuoka, Japan
  • Year and Date: 2015-12-03 – 2015-12-04
  • Int'l Joint Research
• [Presentation] Seawater Divalent Cations (MgCl2 and CaCl2) Effect on the Flotation of Molybdenite and Chalcopyrite (2015)
  • Author(s): Tsuyoshi HIRAJIMA, Osamu ICHIKAWA, G.P.W. SUYANTARA, Hajime MIKI, Keiko SASAKI, Ahmed Mohamed Elmahdy Ahmed MOHAMED
  • Organizer: Flotation ‘15
  • Place of Presentation: Cape Town, South Africa
  • Year and Date: 2015-11-16 – 2015-11-19
  • Int'l Joint Research
• [Presentation] Study of Selective Flotation of Chalcopyrite and Molybdenite with Various Oxidation (2015)
  • Author(s): Tsuyoshi HIRAJIMA, Hidekazu MATSUOKA, Hajime MIKI, Ahmed Mohamed Elmahdy Ahmed MOHAMED, Keiko SASAKI
  • Organizer: Flotation ‘15
  • Place of Presentation: Cape Town, South Africa
  • Year and Date: 2015-11-16 – 2015-11-19
  • Int'l Joint Research
• [Presentation] Mineral Processing (2015)
  • Author(s): Tsuyoshi HIRAJIMA
  • Organizer: THE 5th INDONESIAN NATIONAL SEMINAR ON CHEMICAL ENGINEERING, 2015
  • Place of Presentation: Yogyakarta, Indonesia
  • Year and Date: 2015-10-12 – 2015-10-13
  • Int'l Joint Research / Invited
• [Presentation] Bioleaching and Mineral Processing (2015)
  • Author(s): Naoko OKIBE
  • Organizer: THE 5th INDONESIAN NATIONAL SEMINAR ON CHEMICAL ENGINEERING, 2015
  • Place of Presentation: Yogyakarta, Indonesia
  • Year and Date: 2015-10-12 – 2015-10-13
  • Int'l Joint Research / Invited
• [Presentation] Effect of Cu(II) on bio-scorodite crystallization using Acidianus brierleyi (2015)
  • Author(s): Naoko OKIBE, Shiori MORISHITA, Masahito TANAKA, Tsuyoshi HIRAJIMA, Keiko SASAKI
  • Organizer: 21st International Biohydrometallurgy Symposium (IBS 2015)
  • Place of Presentation: Bali, Indonesia
  • Year and Date: 2015-10-05 – 2015-10-08
  • Int'l Joint Research
• [Presentation] Adsorption Characteristic of Arsenate on Delaminated Layered Double Hydroxides (2015)
  • Author(s): Yu TAKAKI, Paulmanickam KOILRAJ, Tsuyoshi HIRAJIMA, Keiko SASAKI
  • Organizer: Euroclay2015
  • Place of Presentation: Edinburgh, Scotland
  • Year and Date: 2015-07-05 – 2015-07-10
  • Int'l Joint Research
• [Presentation] 微生物を用いた硫化鉱物の浮遊選別に関する研究 (2015)
  • Author(s): 小山恵史，Mohsen Farahat，平島剛，笹木圭子，沖部奈緒子
  • Organizer: 資源・素材学会九州支部
  • Place of Presentation: 福岡
  • Year and Date: 2015-06-12 – 2015-06-12
• [Patent(Industrial Property Rights)] 選鉱方法 (2015)
  • Inventor(s): 平島剛、市川修、三木一、Suyantara G. P. W.、外
  • Industrial Property Rights Holder: 平島剛、市川修、三木一、Suyantara G. P. W.、外
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 特願2015-100114
  • Filing Date: 2015-05-15
• [Patent(Industrial Property Rights)] 選鉱方法 (2015)
  • Inventor(s): 平島剛、松岡秀和、三木一、今泉有二, 越智大司,滝田絵理
  • Industrial Property Rights Holder: 平島剛、松岡秀和、三木一、今泉有二, 越智大司,滝田絵理
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 特願2015-229400
  • Filing Date: 2015-11-25
• [Patent(Industrial Property Rights)] 選鉱方法 (2015)
  • Inventor(s): 平島剛、松岡秀和、三木一、今泉有二, 黒岩樹人, 滝田絵理
  • Industrial Property Rights Holder: 平島剛、松岡秀和、三木一、今泉有二, 黒岩樹人, 滝田絵理
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 特願2015-250827
  • Filing Date: 2015-12-24