真空碳热还原ITO废靶回收金属铟的工艺研究  

Process Study on Vacuum Carbon Thermal Reduction for the Recovery of Indium Metal from ITO Waste Targets

作　　者：王红玉 邓勇[1] 赵玺然 杜巧圆 WANG Hongyu;DENG Yong;ZHAO Xiran;DU Qiaoyuan(Faculty of Metallurgy and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China)

机构地区：[1]昆明理工大学冶金与能源工程学院,云南昆明650093

出　　处：《昆明理工大学学报（自然科学版）》2024年第1期11-16,共6页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：“兴滇英才支持计划”青年人才专项。

摘　　要：以ITO(Indium-Tin-Oxide)废靶为原料进行一步真空碳热还原蒸馏回收金属铟的实验.首先研究了碳热还原过程中温度、保温时间、碳粉添加量对铟还原率的影响,再结合铟锡合金的真空蒸馏进行ITO废靶的一步还原蒸馏回收金属铟.最佳真空碳热还原条件:温度900℃,保温时间2 h,真空度10~20 Pa,碳粉添加量为质量分数16%.一步还原蒸馏最佳条件:温度900℃,保温时间2 h,碳粉添加量为质量分数16%.真空度10~20 Pa的条件下充分还原后,再进行真空蒸馏:温度1 200℃,保温时间1 h,真空度10~20 Pa.可通过一步真空碳热还原蒸馏实现从ITO废靶中直接回收金属铟.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,insulation 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 targets was studied in conjunction with the vacuum distillation of indium-tin alloy.The optimal conditions for vacuum carbon thermal reduction were determined as follows:temperature of 900℃,insulation time of 2 hours,vacuum 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,vacuum distillation was then performed at a temperature of 1200℃,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.

关 键 词：ITO废靶 金属铟 真空碳热还原 铟锡分离 

分 类 号：X705[环境科学与工程—环境工程] TF843.1[冶金工程—有色金属冶金]