Modeling and box-Behnken design optimization of microwave pretreatment of sulphidic gold flotation tailing
 
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1
Istanbul Technical University, Mining Faculty, Mineral Processing Engineering Department
 
2
Esan Eczacibasi Industrial Raw Materials Co., R&D Center
 
 
Publication date: 2022-05-11
 
 
Corresponding author
Birgül Benli   

Istanbul Technical University, Mining Faculty, Mineral Processing Engineering Department
 
 
Physicochem. Probl. Miner. Process. 2022;58(5):149929
 
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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.
eISSN:2084-4735
ISSN:1643-1049
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