Selective recovery of precious metals from solution using magnetite

• Project/Area Number: 23360398
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Earth system and resources enginnering
• Research Institution: Hokkaido University
• Principal Investigator: HIROYOSHI Naoki 北海道大学, 工学(系)研究科(研究院), 教授 (50250486)
• Co-Investigator(Kenkyū-buntansha): ITO Mayumi 北海道大学, 大学院・工学研究院, 准教授 (10339690) ; FUKUSHIMA Masami 北海道大学, 大学院・工学研究院, 准教授 (40344113)
• Project Period (FY): 2011-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000); Fiscal Year 2013: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000); Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000); Fiscal Year 2011: ¥12,870,000 (Direct Cost: ¥9,900,000、Indirect Cost: ¥2,970,000)
• Keywords: 貴金属 / 金 / 白金 / パラジウム / ロジウム / 磁力選別 / 還元析出 / 回収 / マグネタイト / スラグ / プラチナ / 吸着

Research Abstract

A new method to recover precious metals like gold and platinum group metals selectively from the solutions containing common metal ions. Reduction potential of the precious metal ions are high and they are reduced and precipitated on magnetite surface, but reduction potential of common metals like copper and zinc are lower than that of magnetite and they are not reduced on magnetite surface. Magnetic separation can be used to recover precious metal loaded magnetite from the suspension of precious metal ores and scraps. It was confirmed that slag magnetite (a magnetic portion of crushed copper converter slag) can be used to recover precious metals.

Research Products

• [Presentation] マグネタイトを担体に用いた水溶液中からの貴金属の回収 (2014)
  • Author(s): 広吉 直樹，伊藤真由美
  • Organizer: 資源・素材学会春季大会
  • Place of Presentation: 東京大学生産技術研究所、東京
• [Presentation] Recovery of the Platinum Group Metals from the Chloride Solution by Synthesized Magnetite and Slag Magnetite (2013)
  • Author(s): N. Hiroyoshi, R. Sato, P.Homchuen, M. Ito
  • Organizer: Proc. of 3rd Joint seminar on Geo-environmental engineering & recycling
  • Place of Presentation: 釜山,韓国
• [Presentation] A STUDY ON THE UTILIZATION OF SLAG MAGNETITE FOR THE RECOVERY OF PLATINUM GROUP METALS FROM CHLORIDE SOLUTION (2013)
  • Author(s): N.Hiroyoshi, R.Sato, P.Homchuen, H. Kijitani, M. Ito
  • Organizer: Proceedings of 12th Int. Symp. East Asian Recycling Technology
  • Place of Presentation: Zhangjiajie(Hunan) ,China
• [Presentation] マグネタイト及びスラグマグネタイトを使った塩化物溶液からの白金族回収 (2013)
  • Author(s): 広吉直樹, 佐藤遼 , PEET HOMCHUEN, 伊藤真由美
  • Organizer: 資源・素材学会秋季大会
  • Place of Presentation: 札幌,日本
• [Presentation] スラグマグネタイトによる塩化物溶液からの白金族の回収 (2013)
  • Author(s): 広吉直樹, 佐藤遼, PEET HOMCHUEN, 雉子谷東, 伊藤真由美
  • Organizer: 資源・素材学会春季大会
  • Place of Presentation: 津田沼(千葉),日本
• [Presentation] A Study on the Utilization of Magnetite for The Recovery of Platinum Group Metals from Chloride Solution (2013)
  • Author(s): P. Homchuen, M. Ito and N. Hiroyoshi
  • Organizer: The 4th Regional Conference on Geological Engineering"Research-based Education in Geological and Geo-resources Engineering for Sustainable Development in ASEAN Region", in CD-ROM
  • Place of Presentation: Vioentiane, Vietnum
• [Presentation] Recovery of the Platinum Group Metals from the Chloride Solution by Synthesized Magnetite and Slag Magnetite (2013)
  • Author(s): N. Hiroyoshi, R. Sato, P.Homchuen, M. Ito
  • Organizer: 3rd Joint seminar on Geo-environmental engineering & recycling
  • Place of Presentation: 海洋大学、釜山、韓国
• [Presentation] A STUDY ON THE UTILIZATION OF SLAG MAGNETITE FOR THE RECOVERY OF PLATINUM GROUP METALS FROM CHLORIDE SOLUTION (2013)
  • Author(s): N.Hiroyoshi, R.Sato, P.Homchuen, H. Kijitani, M. Ito
  • Organizer: 12th Int. Symp. East Asian Recycling Technology
  • Place of Presentation: Sunshine Hotel& Resort Zhangjiajie、Hunan、China
• [Presentation] マグネタイト及びスラグマグネタイトを使った塩化物溶液からの白金族回収 (2013)
  • Author(s): 広吉 直樹，佐藤 遼，PEET HOMCHUEN，伊藤 真由美
  • Organizer: 資源・素材学会秋季大会
  • Place of Presentation: 北海道大学、札幌
• [Presentation] スラグマグネタイトによる塩化物溶液からの白金族の回収 (2013)
  • Author(s): 広吉直樹，佐藤遼，PEET HOMCHUEN，雉子谷東，伊藤真由美
  • Organizer: 資源・素材学会春季講演会
  • Place of Presentation: 千葉工業大学（習志野市）
• [Presentation] Gold recovery from chloride solution using copper converter slag (2011)
  • Author(s): Naoki Hiroyoshi, Hajime Kijitani, Richard Diaz Alorro, Mayumi Ito, Masami Tsunekawa
  • Organizer: The 11^<th> International Symposium on East Asia Resources Recycling Technology
  • Place of Presentation: ザスプレンダー高雄(台湾)
  • Year and Date: 2011-11-02
• [Presentation] A Study on the Utilization of Magnetite for the Recovery of Platinum from Chloride Solution (2011)
  • Author(s): Peet Homchuen, Naoki Hiroyoshi, Richard Diza Alorro, Hajime Kijitani, Mayumi Ito
  • Organizer: The 11^<th> International Symposium on East Asia Resources Recycling Technology
  • Place of Presentation: ザスプレンダー高雄(台湾)
  • Year and Date: 2011-11-02
• [Presentation] Gold Recovery from Clolide Solution Using Copper Convertor Slag (2011)
  • Author(s): N. Hiroyoshi, H. Kijitani, R.D. Alorro, M. Ito and M. Tsunekawa
  • Organizer: Proceedings of 11th Int. Symp. East Asian Recycling Technology
  • Place of Presentation: Kaohsinung,Taiwan
• [Presentation] マグネタイトによる塩化物溶液からの金回収 (2011)
  • Author(s): 広吉直樹, 雉子谷東, Richard Diaz ALORRO, 伊藤真由美
  • Organizer: 資源・素材学会秋季大会
  • Place of Presentation: Sakai (Osaka),Japan
• [Presentation] A Study on the Utilization of Magnetite for the Recovery of Platinum from Chloride Solution (2011)
  • Author(s): P. Homchuen, N. Hiroyoshi, R.D. Alorro, H. Kijitani and M. Ito
  • Organizer: Proceedings of 11th Int. Symp. East Asian Recycling Technology
  • Place of Presentation: Kaohsinung,Taiwan