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
王红玉 1邓勇 1赵玺然 1杜巧圆1
作者信息
- 1. 昆明理工大学 冶金与能源工程学院,云南 昆明 650093
- 折叠
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2h,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2h,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1h,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.
Abstract
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.
关键词
ITO废靶/金属铟/真空碳热还原/铟锡分离Key words
ITO waste target/indium/vacuum carbothermal reduction/Indium-Tin separation引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据