Kinetic Features of Technogenic Raw Material Leaching in Aqueous Sulphuric Acid Solution with Microwave Intensification
Shoshay Z. Sapinov R.V. Sadenova M.A. Varbanov P.S. Bayeva A.B.
2023Italian Association of Chemical Engineering - AIDIC
Chemical Engineering Transactions
2023#103547 - 552 pp.
In this article, the effect of temperature and microwave irradiation on the apparent activation energy of sulphuric acid leaching of copper slag from Balkhash copper smelter (Kazakhstan) was studied. Leaching was carried out under normal conditions and with microwave irradiation of the raw materials, before and during leaching. Leaching in both cases was carried out at 298, 318 K, 333 K and 358 K. It was found that using microwave irradiation, at 358 K, copper recovery into the productive solution increased from 65.7 % (without irradiation) to 91 %. Apparent activation energy with the use of microwave irradiation decreases from 19.108 kJ/mol (without activation) to 15.517 kJ/mol.
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NPJSC Toraigyhrov University, 64 Lomov str., Pavlodar, 140008, Kazakhstan
Center of Excellence «Veritas», D. Serikbayev East Kazakhstan Technical University, 19 Serikbayev str., Ust-Kamenogorsk, 070000, Kazakhstan
Sustainable process integration laboratory, researcher NETME CENTRE Faculty of Mechanical Engineering, Brno University of Technology, Technická 2896/2, Brno, 616 00, Czech Republic
RGF on PCB National Centre for Expertise sanitary-hygienic laboratory in Pavlodar region SCEC MH RK, Kazakhstan
NPJSC Toraigyhrov University
Center of Excellence «Veritas»
Sustainable process integration laboratory
RGF on PCB National Centre for Expertise sanitary-hygienic laboratory in Pavlodar region SCEC MH RK
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