高铅渣还原过程渣性能及其还原特性的热力学分析  

Thermodynamic analysis of slag properties and reduction characteristics of high-lead slag in reduction smelting process

作　　者：崔雅茹[1] 陈傲黎[1] 户可 李小明[1] 赵俊学[1] 袁方[1] 

机构地区：[1]西安建筑科技大学冶金工程学院,陕西西安710055

出　　处：《中国有色冶金》2015年第4期79-82,共4页China Nonferrous Metallurgy

基　　金：陕西省自然科学基金2013JM7025;陕西省教育厅11JK0814;国家级大学生创新训练项目201210703062资助

摘　　要：液态高铅渣的还原过程中炉渣物理化学性能变化对其还原特性至关重要。本文在分析高铅渣的主要物化性能指标及其研究方法及分析检测手段基础上,对目前铅渣物理化学性能及还原特性的研究现状进行了概述。并运用热力学软件分析计算了高铅渣还原过程的热力学特性,结果表明,在高铅渣还原反应中,从热力学角度,渣系的所有物相中,无论是和C反应还是和C0反应,Pb_8ZnSi_6O_(21)都是最容易被还原的。在温度>700℃条件下,Pb_8ZnSi_6O_(21)和Pb_4SiO_6与C直接还原反应比与C0还原反应更容易进行,但是对Pb_2SiO_4和Pb0没有明显的趋势。In the reduction process of high-lead slag,the change of physicochemical properties of slag is of vital importance for reduction properties.In this paper,on base of analysis of main physicochemical properties,main research methods,analysis and detection means,the current research status of physicochemical properties and the reduction characteristics of lead slag are summarized.In addition,the reduction properties of the high-lead slag are calculated by using the Factsage thermodynamics software.It is shown that phase of Pb8ZnSi6O21 is easiest to be reduced whether with C or with CO in the reaction of high-lead slag.While the temperature is above 700 ℃,Pb8ZnSi6O2t and Pb4SiO6 may preferred react with C than with CO.However,there are no obvious trend for Pb2SiO4 and PbO.

关 键 词：高铅渣 物理化学性能 还原特性 Factsage 

分 类 号：TF812[冶金工程—有色金属冶金]