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1992 Fiscal Year Final Research Report Summary

Dissolution in Plural Minerals-Water System and Its Effects on Interfacial Phenomena and Flotation of Each Mineral

Research Project

Project/Area Number 03453059
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 鉱物学(含岩石・鉱床学)
Research InstitutionHokkaido University

Principal Investigator

TSUNEKAWA Masami  Hokkaido University, Fac. of Eng., Associate Professor, 工学部, 助教授 (40002026)

Co-Investigator(Kenkyū-buntansha) HIRAJIMA Tsuyoshi  Hokkaido University, Fac. of Eng., Instructor, 工学部, 助手 (00175556)
Project Period (FY) 1991 – 1992
KeywordsFlotation / Zeta Potential / Collector / Fluorite / Calcite / Bastnaesite / Solution Chemistry / Adsorption
Research Abstract

Salt-type minerals such as fluorite, calcite and bastnaesite have higher solubilities in water. When salt-type minerals coexist, the ions derived from these minerals markedly affect the surface and flotation properties of each other. In this study, special apparatus and methods developed by the authors were used to investigate the phenomena occurring in the mixed minerals system. The main results were as follows: (1) All results(flotation, zeta potential, etc.) obtained in the binary minerals system of fluorite and calcite differed from those in the singular mineral systems. The difference was caused by the effect of the ionic species dissolved from both minerals in the aqueous solution. This was interpreted in terms of the surface precipitation and/or surface reaction between both minerals and the dissolved ionic species. The results of chemical thermodynamic calculations showed that the fluorite phase was more stable than the calcite phase below pH 8.3-9.3, where the calcite surface in the binary minerals system became similar to that of fluorite. Above this pH range, the reverse phenomenon was observed. (2) N-oleoylsarcosine, sodium octadecylsulfate and n-tallow-1,3-diaminopropane dioleate(TDO) reacted selective- ly with the constituent ions of salt-type minerals, and these surfactants can be used as collector in flotation of bastnaesite, monazite, fluorite, barite and calcite. High flotation recovery was obtained in the pH range where TDO is present as ampho-ion, and a possible explanation for its adsorption on salt-type minerals was presented. (3) Because TDO did not react with main ions in flotation pulp, TDO was an effective collector for selective flotation of salt-type minerals.

  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] 恒川 昌美: "Solution Chemistry Interfacial Phenomena and Flotation behavior in an Aqueous Systm Containing Fluorite and Calcite" Proceedinga of 1st International Conference on Modern Process Mineralogy and Mineral Processing. 493-498 (1992)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 恒川 昌美: "N-tallow-1,3-diaminopropane dioleateの化学的性質とその塩類鉱物浮選への応用" 資源と素材.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 恒川 昌美: "N-tallow-1,3-diaminopropane dioleateによる塩類鉱物の浮選とその界面動電的研究" 資源処理技術.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Masami Tsunekawa, Tsuyoshi Hirajima, Etsuko Ogata and Naoki Habata: "Solution Chemistry, Interfacial Phenomena and Flotation Behavior in an Aqueous System Containing Fluorite and Calcite" Proceedings of the First International Conference on Modern Process Mineralogy and Mineral Processing. 493-498 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Masami Tsunekawa, Katsuhiko Chino, Manabu Kanemoto and Tsuyoshi Hirajima: "Chemical Properties of N-tallow-1,3-diaminopropane dioleate and its Application to Salt-type Mineral Flotation" Shigen-to-Sozai.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Masami Tsunekawa, Tsuyoshi Hirajima and Masahiko Yokoyama: "Electrokinetic Study on Flotation of Salt-type Minerals with N-tallow-1,3-diaminopropane Dioleate" Resources Processing.

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1994-03-24  

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