Process Study on Vacuum Carbon Thermal Reduction for the Recovery of Indium Metal from ITO Waste Targets
Experimental study was conducted on the one-step vacuum carbon thermal reduction distillation for the recovery of indium metal from Indium-Tin-Oxide(ITO)waste targets.The influence of temperature,insu-lation time,and carbon powder addition on the indium reduction rate during the carbon thermal reduction process was investigated.Additionally,the one-step reduction distillation recovery of indium metal from ITO waste tar-gets was studied in conjunction with the vacuum distillation of indium-tin alloy.The optimal conditions for vacu-um carbon thermal reduction were determined as follows:temperature of 900℃,insulation time of 2 hours,vacu-um degree of 10-20 Pa,and carbon powder addition of 16％(mass fraction).The optimal conditions for one-step reduction distillation were found to be a temperature of 900℃,insulation time of 2 hours,and carbon powder addition of 16％(mass fraction).After sufficient reduction under conditions of 10-20 Pa vacuum degree,vacu-um distillation was then performed at a temperature of 1 200℃,insulation time of 1 hour,and vacuum degree of 10-20 Pa.Direct recovery of indium metal from ITO waste targets was achieved through the one-step vacuum carbon thermal reduction distillation process.
ITO waste targetindiumvacuum carbothermal reductionIndium-Tin separation
NETL
NSTL
万方数据
维普
