ORALS

SESSION: Non-ferrousMonAM-R7	6th Intl. Symp. on Sustainable Non-ferrous Smelting and Hydro/Electrochemical Processing
Mon Nov, 5 2018 / Room: Pontal (50/2nd)
Session Chairs: Margarita Gutierrez-Ruiz; Gustav Hanke; Session Monitor: TBA

12:35: [Non-ferrousMonAM04] Keynote
Application Study on Technology of Reducing Copper Content in Discarded Slag
Zhi Wang¹ ; Ruimin Bian¹ ; Chuanbing Wei¹ ; Baojun Zhao² ; Haibin Wang¹ ; Wenzhao Cui¹ ; ¹Dongying Fangyuan, Dongying, China; ²The University of Queensland, Brisbane, Australia;
Paper Id: 65 [Abstract]

Effects of flux, vulcanizing agent and reductant on slag cleaning in new-type slag cleaning furnace (Φ3.6×8.1m) were investigated under the conditions including smelting temperature of 1200°C and 1250°C, settling time of 30 min and 60 min, and Fe/SiO2 of 1.7-1.9. The results show that addition of SiO2, B2O3 or CaF2 into original copper smelting slag can improve settling separation effect. Though no effect on copper recovery, addition of FeS can provide heat required by reaction with oxygen and reduce copper dissolution in spinel phase and slag. Copper content in discarded slag can be controlled at 0.26% under the optimum comprehensive conditions with ratio of oxygen to natural gas of 1.6.

References:
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