富铅渣的性质及其还原机理  

Properties and Reduction Mechanism of Lead-rich Slags

作　　者：王吉坤[1] 赵宝军[2] 杨钢[1] Peter Hayes 

机构地区：[1]云南冶金集团总公司,云南昆明650051 [2]昆士兰大学火法研究中心

出　　处：《有色金属（冶炼部分）》2004年第6期5-8,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：云南省国际合作项目(2003GH04)

摘　　要：选用实验室制备的不同PbO含量的富铅渣,确定富铅渣的孔隙率和密度、软化温度、微观结构和相成分。在竖管炉中用石墨坩埚进行还原试验。研究结果表明,当温度低于900℃时,富铅渣与石墨之间没发生明显的反应。富铅渣与石墨之间的反应主要是通过液体形式进行。并对富铅渣相平衡进行热力学计算。Lead-rich slags containing different level of PbO concentrations have been prepared in laboratory. Porosity and density, softening temperature, microstructure and phase compositions of the lead-rich slags have been determined. Reduction experiments have been conducted in a vertical tube furnace using graphite crucible. The results show that no significant reaction occurs between lead-rich slag and graphite at temperatures below 900℃. The reaction between lead-rich slag and graphite is mainly through liquid formed. Thermodynamic of phase equilibrium of this slag has also been calculated.

关 键 词：富铅渣 PBO 石墨 熔化温度 

分 类 号：TF812[冶金工程—有色金属冶金]