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


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Benli B., Basturkcu H.

PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING, vol.58, no.5, 2022 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 58 Issue: 5
  • Publication Date: 2022
  • Doi Number: 10.37190/ppmp/149929
  • Journal Name: PHYSICOCHEMICAL PROBLEMS OF MINERAL PROCESSING
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Applied Science & Technology Source, Communication Abstracts, Metadex, Civil Engineering Abstracts
  • Keywords: microwave heating, gold-bearing high sulfide concentrate, bulk flotation, optimization, Box-Behnken experimental design, COAL, PRETREATMENT, RECOVERY
  • Istanbul Technical University Affiliated: Yes

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.