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Mineral ProcessingMagnetic SeparationParticle SizeMetal ProductionIndustrial EcologyGrinding MediaOre BeneficiationFlotation ReagentFlotation ColumnCopper MineralsGravity SeparationQuantitative DescriptionGold OreFlotation ProcessSulfide MineralsHydrophobic FlocculationRecycling SystemMetallurgical SystemThiourea LeachingPhysical Economy