铟-铋二元合金真空蒸馏气-液平衡研究  

Study on vapor-liquid equilibrium of In-Bi binary alloy in vacuum distillation

作　　者：贾元伟 陈亮亮 伍美珍 孔令鑫[2,3,4,5] 陈丽诗 徐宝强 杨斌[2,3,4,5] 张家涛 彭巨擘[1] JIA Yuanwei;CHEN Liangliang;WU Meizhen;KONG Lingxin;CHEN Lishi;XU Baoqiang;YANG Bin;ZHANG Jiatao;PENG Jubo(R&D Center of Yunnan Tin Group Co.Ltd.,Kunming 650106,China;National Engineering Research Center for Vacuum Metallurgy,Kunming University of Science and Technology,Kunming 650093,China;Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China;Yunnan Key Laboratory of Vacuum Metallurgy of Non-Ferrous Metals,Kunming 650093,China;State Key Laboratory of Clean Utilization of Complex Nonferrous Metal Resources,Kunming 650093,China)

机构地区：[1]云南锡业集团(控股)有限责任公司研发中心,云南昆明650106 [2]昆明理工大学真空冶金国家工程研究中心,云南昆明650093 [3]昆明理工大学冶金与能源工程学院,云南昆明650093 [4]云南有色金属真空冶金重点实验室,云南昆明650093 [5]复杂有色金属资源清洁利用国家重点实验室,云南昆明650093

出　　处：《中国有色冶金》2023年第2期149-156,共8页China Nonferrous Metallurgy

基　　金：云南省重大科技专项计划(202002AB080001)。

摘　　要：新型高性能透明导电氧化物薄膜(简称IBO)在加工过程中会产生大量的废料,另外,随着IBO的广泛应用,IBO废靶量也将与日俱增。采用真空蒸馏工艺分离提纯时,In与Bi的饱和蒸气压相近,较难获得满意的工艺参数。气-液平衡(VLE)相图可用于指导真空蒸馏实践,本文以配置的In-Bi合金为原料进行真空蒸馏实验,以获得In-Bi合金的VLE值,并采用MIVM预测In-Bi合金组元的活度及气液平衡数据,获得以下结论:在压力5~10 Pa、温度1183 K、平衡时间3.17 h条件下,当残留物中In含量为80.80%时,挥发物中铋含量达到97.17%,表明采用真空蒸馏可分离In-Bi合金中的In和Bi;采用分子相互作用体积模型(MIVM)预测了In-Bi合金组元的活度,平均标准偏差分别为±0.0139、±0.007,平均相对偏差分别为±11.216%、±11.4521%,表明采用MIVM预测In-Bi合金组元的活度是可靠的;采用MIVM预测了In-Bi合金体系的VLE值,与实验值吻合,表明采用MIVM预测铟基合金体系的VLE值是可靠的,且适用于不同摩尔比下的铟基合金,可用于指导真空蒸馏分离铟基合金。本研究为真空蒸馏分离提纯铟基合金或处理含铟复杂物料提供了理论参考。A large amount of waste containing In-Bi will be produced during processing the new high-performance transparent conductive oxide film(IBO).In addition,with the wide application of IBO,IBO waste target will also increase.In the process of vacuum distillation for separation and purification,the saturated vapor pressure of In and Bi is similar,so it is difficult to obtain satisfactory process parameters.The vapor-liquid equilibrium(VLE)phase diagram can be used to guide the practice of vacuum distillation.In this paper,vacuum distillation experiments were carried out with the configured In-Bi alloy as raw material to obtain the VLE value of In-Bi alloy,and MIVM was used to predict the activity and gas-liquid equilibrium data of In-Bi alloy components.The following conclusions were obtained.under the conditions of system pressure of 5~10 Pa and distillation temperature of 1183 K,when the In content in the residue is 80.80%,the Bi content in the volatiles reaches 97.17%,which indicating that the In-Bi alloy can be separated by vacuum distillation.The molecular interaction volume model(MIVM)was used to calculate the activity of components of In-Bi alloy.The average standard deviations of the calculated values and the experimental data were±0.0139 and±0.007,respectively,and the average relative deviations were±11.216%and±11.4521%,respectively.The results show that the MIVM is reliable for predicting the activity of In-Bi alloy.The vapor-liquid equilibrium(VLE)data of In-Bi alloy was predicted based on the MIVM.A comparison shows that the predicted value is consistent with the experimental data determined in this study,which indicates that the MIVM is reliable for predicting the VLE value of indium-based alloys and can be used to guide the separation of indium-based alloy by vacuum distillation.The reliability of the MIVM model was verified and the process parameters for vacuum distillation separation of indium-based alloys are also optimized based on the model prediction and vacuum distillation experiments.This stu

关 键 词：In-Bi合金 In-Bi分离 IBO废靶 真空蒸馏 气-液平衡相图 MIVM 活度预测 

分 类 号：TF843[冶金工程—有色金属冶金] TF01