| 摘要 |
An oxidation process uses an inclined raceway which has a plurality of longitudinally spaced transverse riffles across the raceway so that a slurry of water and particles to be oxidized runs over the raceway in turbulent flow to a catchment tank at the bottom end of the raceway. The material is recirculated over the raceway every two to three minutes for a period of two to six hours. The oxidation process can be used in conjunction with heating and vibration of the raceway to oxidize the particles. The oxidation process is particularly used in the separation of metals from ores in which after oxidation leaching agents including bromide and chlorine compounds are added to the mixture during the recirculation over the raceway to leach the metals in soluble salts from the particles. Ion exchange systems are used using known resins to extract the metals from the liquid after the recirculation system is complete.
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