摘要
在系统压力5~10 Pa、蒸馏温度1470~1570 K条件下,进行铟-锡(In-Sn)二元合金真空蒸馏实验。结果表明:随着蒸馏温度升高,液相中In含量从14.31%降至0.01%,表明真空蒸馏可有效分离In-Sn合金。采用分子相互作用体积模型(MIVM)计算In-Sn合金组元的活度,计算值与实验值的平均标准偏差分别为±0.0113、±0.0154,平均相对偏差分别为±11.8134%、±11.7322%,表明采用MIVM预测In-Sn合金组元的活度是可靠的。在此基础上,采用MIVM预测In-Sn合金体系的气-液平衡(VLE)数据,并与实验值进行对比,二者吻合,表明采用MIVM预测铟基合金体系的VLE是可靠的,可用于指导真空蒸馏分离铟基合金。模型预测与真空蒸馏实验的结合,不仅验证了MIVM的可靠性,还优化了真空蒸馏分离铟基合金的工艺参数,为真空蒸馏分离提纯铟基合金或处理含铟复杂物料提供指导。
The vacuum distillation experiment of In-Sn binary alloy was carried out under the conditions of system pressure of 5-10 Pa and distillation temperature of 1470-1570 K.The results show that the content of In in the liquid phase decreased from 14.31%to 0.01%with the increasing of distillation temperature,which indicates that vacuum distillation can effectively separate In-Sn alloy.The molecular interaction volume model(MIVM)was used to calculate the activity of components of In-Sn alloy.The average standard deviations of the calculated values and the experimental data were±0.0113 and±0.0154,respectively,and the average relative deviations were±11.8134%and±11.7322%,respectively.The results show that the MIVM is reliable for predicting the activity of In-Sn alloy.The Vapor-Liquid Equilibrium(VLE)data of In-Sn 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 study may provide guidance for vacuum separation and purification of indium-based alloys or processing of complex materials containing indium.
作者
伍美珍
陈亮亮
贾元伟
孔令鑫
陈丽诗
徐宝强
杨斌
张家涛
WU Meizhen;CHEN Liangliang;JIA Yuanwei;KONG Lingxin;CHEN Lishi;XU Baoqiang;YANG Bin;ZHANG Jiatao(R&D Center of Yunnan Tin Group(Holding)Co.,Ltd.,Kunming 650106,China;National Engineering Laboratory 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)
出处
《有色金属工程》
CAS
北大核心
2023年第9期42-47,共6页
Nonferrous Metals Engineering
基金
云南省稀贵金属材料基因工程资助项目(202002AB080001)。
