Investigation of HydroFloat® Coarse Particle Flotation on an Iron Oxide Copper Gold Deposit
摘要
Given a growing shortage of high-gradeGrade copperCopper resources and the resultant increase in demandDemand for copperCopper, a global push to improve safetySafety and reliabilityReliability of tailings storage facilities, and an increased focus on environmental stewardship, the miningMining industry is in search for innovative solutions to improve the efficiencyEfficiency, reliabilityReliability and safetySafety of its operationsOperation and new assets. One such solution is Eriez’ HydroFloatHydroFloat Coarse Particle Flotation (CPFCoarse Particle Flotation (CPF)) technologyTechnology. As conventional flotation technologiesFlotation technologies are unable to efficiently recover coarse particleCoarse particle sizes due to their inherent metallurgical and operational limitations, the CPFCoarse Particle Flotation (CPF) increases the maximum floatable particle size using a combination of flotationFlotation and hindered bed separation fundamentals. These principles increase the flotationFlotation rate of both coarse and partially liberated particles otherwise lost to tailings in conventional flotationFlotation cells. As a result, the CPFCoarse Particle Flotation (CPF) can be used to optimizeOptimize metal recoveriesMetal recovery, flotationFlotation grind size, millMill throughputThroughput and/or tailings water recoveryWater recovery. To investigate these potential benefits at its Salobo (Brazil) operationOperation, Vale facilitated the completion of laboratory HydroFloatHydroFloat CPFCoarse Particle Flotation (CPF) testing on an ironIron oxide copper oreCopper ore. Testing was carried out using coarse gangue rejectionCoarse gangue rejection and tailings scavengingTailings scavenging flowsheet modifications, with the intentions to maximize primary grind size and global metal recoveriesMetal recovery, respectively. This paper summarizes the test results within both circuit configurationsConfiguration and highlights the relationship between primary grind size and flotationFlotation performancePerformance using the novel CPFCoarse Particle Flotation (CPF) technologyTechnology.