Processing OreThis is the real stuff sought for: the blue specimen is not characteristic for the seven kinds of ores found at Ok Tedi Mine. The sulfides are partly oxidized, because it has been exposed to air. The "golden" sample, copper pyrite, is regularly found here.Rock containing copper is coarsly broken and conveyed to the mill.The coarsely broken ore is pulverized in huge rotating mill drums, that contain steel balls of tennis ball size.Pieces that remain too large are recycled to the input, till they are broken down to less than 170 micrometers in diameter, and ready for flotation.lime: calcium hydroxide, the main additive to adjust pH S-7249 Promoter: main compound sodium diisobutyldithioposphate Oreprep OTX-140: a mixture of alcohols, aldehydes, esters, and glycols Magnafloc 1011: an anionic polyelectrolyte flocculant A foaming flotation potThe flotation hallOriginal issue April 2001 last update |