Supplementary Material s42

Supplementary Material

Copper Recovery from Yulong Complex Copper Oxide Ore by Flotation and Magnetic Separation

JUNWEI HAN,1 JUN XIAO,2,3 WENQING QIN,1 DAIXIONG CHEN,2 and WEI LIU1,4

1.—School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China. 2.—Hunan Provincial Key Laboratory for Complex Copper Lead Zinc Associated Metal Resources Comprehensive Utilization, Hunan Research Institute for Non-ferrous Metals, Changsha 410100, China. 3.—e-mail: [email protected]. 4.—e-mail: [email protected].

1 Table S-I. Main chemical compositions of Yulong copper oxide ore * * Cu Fe S As SiO2 Al2O3 CaO MgO K2O Na2O Ag Au 4.31 17.99 0.41 0.03 40.58 19.39 1.65 0.44 0.12 0.03 12 0.13 All units are given in wt.% except for Ag and Au; * denotes unit is g/t.

Table S-II. Main mineral compositions of Yulong copper oxide ore Minerals Content Minerals Content Malachite+Azurite 5.35 Limonite 30.7 Cu-Mn-Al-Si-O 0.75 Clay 40.5 Chalcocite 0.30 Quartz 14.0 Chalcopyrite 0.03 Calcite 3.5 Pyrite 0.62 Sericite 1.5 Hematite+Magnetite 2.0 Others 1.0 All units are given in wt.%.

Table S-III. Results of closed-circuit test on laboratory scale Name yield /% Cu grade /% Cu recovery /% Conc. I 7.15 26.44 43.47 Conc. II 7.71 17.26 30.61 Conc. I+II 14.86 21.68 74.08 Conc. III 21.24 3.55 17.34 Tailing 63.90 0.58 8.58 Raw ore 100.00 4.35 100.00 All units are given in %.

Table S-IV. Main chemical compositions of different products * * Elements Cu Fe S SiO2 Al2O3 CaO MgO K2O Na2O Ag Au Conc. I 26.46 8.34 3.45 15.55 8.78 1.14 0.35 0.12 0.05 65.30 0.41 Conc. II 17.26 10.16 1.58 20.36 18.54 1.16 0.43 0.12 0.05 55.95 0.27 Conc. III 3.55 30.40 0.08 32.84 16.08 1.67 0.85 0.21 0.18 <0.10 <0.10 Tailing 0.58 4.18 0.10 58.38 21.67 1.73 0.55 0.25 0.33 4.07 <0.10 All units are given in wt.% except for Ag and Au; * denotes unit is g/t.

Table S-V. Average data of commercial tests in Yulong, China Name Yield /% Cu grade /% Cu recovery /% Conc. I 6.81 25.98 41.44 Conc. II 7.47 18.65 32.63 Conc. III 18.44 3.63 15.68 Tailing 67.28 0.65 10.25 Raw ore 100.00 4.27 100.00

2 All units are given in %.