Sn、SnS、Cu、Cu_(2)S分解、挥发及相互反应的热力学分析与讨论  

Thermodynamic analysis and discussion on decomposition,volatilization and interaction of Sn,SnS,Cu,Cu_(2)S

作　　者：张博 刘大春[2,3] 熊恒[2,3] 周正恩 邓勇[2,3] 杨斌[2,3] 李玲 徐宝强[2,3] ZHANG Bo;LIU Da-chun;XIONG Heng;ZHOU Zheng-en;DENG Yong;YANG Bin;LI Ling;XU Bao-qiang

机构地区：[1]复杂有色金属资源清洁利用国家重点实验室,云南昆明650093 [2]昆明理工大学真空冶金国家工程实验室,云南昆明650093 [3]云南省有色金属真空冶金重点实验室,云南昆明650093 [4]北京科技大学冶金与生态工程学院,北京100083 [5]北京安泰科信息股份有限公司,北京100083

出　　处：《中国有色冶金》2021年第6期16-21,共6页China Nonferrous Metallurgy

基　　金：省部共建复杂有色金属资源清洁利用国家重点实验室自主课题研究课题(CNMRCUTS1701);国家自然科学基金项目(51874156);国家自然科学基金项目(51964033)。

摘　　要：本文采用经典热力学计算方法计算了不同条件下Sn、SnS、Cu、Cu_(2)S分解、挥发及其相互反应ΔG-T关系,以及锡的饱和蒸气压等数据,通过对数据的分析与讨论,探讨Sn、SnS、Cu、Cu_(2)S发生分解、挥发及相互反应的理论实验条件:SnS(s,l)分解的温度与压强呈负相关性,SnS(s,l)在标准状态下的分解反应不会发生,SnS(g)的分解反应不可能发生;Cu_(2)S(s,l)分解的温度与压强呈负相关性;标准状态下,当温度大于690 K(约417℃)时,SnS与Cu即可发生反应;真空条件下,Cu_(2)S和Sn很容易发生反应。In this paper,the decomposition and volatilization of Sn,SnS,Cu,Cu_(2)S and their mutual reaction ΔG-T under different conditions are calculated by using tclassical thermodynamic calculation method,as well as the stats such as saturated vapor pressure of tin.The theoretical experimental conditions of decomposition,volatilization and mutual reaction of Sn,SnS,Cu and Cu_(2)S are studied through data analysis and discussion as following:the decomposition temperature and pressure of SnS(s,l) are negatively correlated,and the decomposition reaction of SnS(s,l) does not occur in the standard conditions,and the decomposition reaction of SnS(g) is impossible;the decomposition temperature of Cu_(2)S(s,l) is negatively correlated with the pressure;In standard conditions,when the temperature is higher than 690 K(about 417 ℃),SnS reacts with Cu;In vacuum,Cu_(2)S and Sn react easily.

关 键 词：经典热力学 相图分析 热力学状态参数 分解反应 分解温度 挥发 饱和蒸气压 

分 类 号：TF801.1[冶金工程—有色金属冶金] TF81