El medio ambiente en la minería

141 T. KlMURA & H. KUROKAWA hydro-sulphide, and this precipitate is sent to the arsenic plant as arsenic resourre. Waste water is sent to tbe effiuent treatment process. A brief flow sheet of tbe blowdown process is shown in Figure 13. Table7. Typical assay of weak acld Item Free H2S04 100 Cu 0.5 F 1 CI 1 As 2 Zn 0.5 Extractlon of weak acid 1.1•• te Id I &,¡pcuo PI .. nt ~L.---'1 1 Be'"" '9 M4 Concentration ..... 150 '" 1.0 '" 3 ..... 5 ...... 5 ..... 2 300 m 3 /dav Sutil.. Pt".c:ipii.ata Figure 13. F10w sheet of blow down treatment process. gil gil g¡1 gil gil gil