Cost comparison between two different two-liquid flotation methods

Akira Otsuki, Gjergj Dodbiba, Toyohisa Fujita

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The purpose of the present work was to perform the cost comparison between two different two-liquid flotation methods to selectively recover ultra-fine fluorescent powders for material recycling. Two-liquid flotation utilizes the interface of two-liquids with different polarities (i.e. polar and non-polar solvents) and surfactant to selectively hydrophobized target particles / powders. The major difference between the two methods described in this study were the polar solvents that created the difference in recovery / separation performance of the powders. The first method used N,N-dimethylformamide while the second method applied water. Based on the cost comparison, it was found that the first method is more cost effective in order to recover the fluorescent powders with high purity.

Original languageEnglish
Title of host publicationProceedings of the 10th European Metallurgical Conference, EMC 2019
PublisherGDMB Verlag GmbH
Pages349-361
Number of pages13
ISBN (Electronic)9783940276872
StatePublished - 2019
Externally publishedYes
Event10th European Metallurgical Conference, EMC 2019 - Dusseldorf, Germany
Duration: 23 Jun 201926 Jun 2019

Publication series

NameProceedings of the 10th European Metallurgical Conference, EMC 2019
Volume1

Conference

Conference10th European Metallurgical Conference, EMC 2019
Country/TerritoryGermany
CityDusseldorf
Period23/06/1926/06/19

Keywords

  • Rare earth
  • Recycling
  • Solvent
  • Ultra-fine particle

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