Modeling and Box-Behnken design optimization of microwave treatment of sulphidic gold flotation tailing

Birgül Benli*, Hüseyin Baştürkçü

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

As raw minerals become scarcer every passing day, the need for the recovery of mine tailings becomes essential. This research highlights the use of microwave energy as a green alternative to otherwise environmentally harmful methods of ore tailing recovery. The obtained results indicate that a 1.4 ppm Au and 3.5 % S sample floated with Aeroflot 208 and Aerophine 3418A increased the concentration of tailings over 18 % S and 4 ppm, Au, for recovery yield, resulting in 84 % and 80 % recovery, respectively. After microwave irradiation, 90 % of sulphur removal was reached under the optimum conditions of 50 minutes of irradiation using 1000 W for 4 g of the sample. Overall with 96. 74 % correlation of the quadratic model using the Box-Behnken design and expressed coefficient R2 regression the model was proven to be suitable for heating and roasting processes of gold-bearing tailings.

Original languageEnglish
Article number149929
JournalPhysicochemical Problems of Mineral Processing
Volume58
Issue number5
DOIs
Publication statusPublished - 2022

Bibliographical note

Publisher Copyright:
© Wroclaw University of Science and Technology

Keywords

  • Box-behnken experimental design
  • Bulk flotation
  • Gold-bearing high sulfide concentrate
  • Microwave heating
  • Optimization

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