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投稿时间：2021-02-02 修订日期：2021-02-07 录用日期：2021-02-22 网络发布日期：2021-05-20
投稿时间：2021-02-02 修订日期：2021-02-07 录用日期：2021-02-22 网络发布日期：2021-05-20
中文摘要: 以FeO-Fe2O3-SiO2-CaO-ZnO-PbO渣系为研究对象，采用热力学软件FactSage计算温度、Fe/SiO2（质量比）、CaO/SiO2（质量比）、ZnO含量及PbO含量等因素对炉渣熔化温度及液相生成区的影响。热力学分析表明，随着Fe/SiO2的增大，炉渣熔化温度减小，随着CaO/SiO2的提升呈先减小后增大的趋势。炉渣中ZnO含量在10%~18%变化时，炉渣的熔化温度变化较大。随着ZnO含量的增加，炉渣的液相区有所减小，当渣中ZnO含量低于12%时，可保证还原熔炼的顺利进行。验证试验表明，在熔炼温度1 200~1 250 ℃、CaO/SiO2=0.5、Fe/SiO2=0.9、ZnO含量12%的条件下，采用侧吹还原熔炼处理液态高铅渣可顺利进行，熔炼过程金属直收率为85%，渣中铅含量为2.06%。
Abstract:Phase diagrams of FeO-Fe2O3-SiO2-CaO-ZnO-PbO slag system were calculated with FactSage thermodynamics software. Effects of temperature, Fe/SiO2 (mass fraction), CaO/SiO2 (mass fraction), ZnO content, and PbO content on melting temperature and liquid phase generation zone of slag were investigated. Thermodynamic analysis shows that melting temperature of slag drops with increase of Fe/SiO2, and drops first and rises later with increase of CaO/SiO2. When ZnO content in slag is 10%-18%, melting temperature of slag varies greatly. However, liquid phase area of slag shows a decreasing trend as content of ZnO rises. Under the premise of ensuring smooth progress of smelting process, content of ZnO in slag can be controlled to be lower than 12%. Verification experiment shows that under the conditions of 1 200-1 250 ℃, CaO/SiO2=0.5, Fe/SiO2=0.8, and ZnO content of 12%, treating of liquid high-lead slag using side blowing reduction smelting can proceed smoothly, metal direct recovery rate during reduction is 85%, and lead content in reduced slag is 2.06%.
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基金项目:国家自然科学基金资助项目（52004111，51864019）；江西省重点研发计划重点项目（20192ACB70017）
引用文本：
杨伟,何勇毅,代龙果,李玉虎,张忠堂,曹才放.锌冶炼渣搭配铅精矿侧吹还原熔炼直接炼铅渣型理论研究[J].有色金属（冶炼部分）,2021(6):10-17.
YANG Wei,HE Yong-yi,DAI Long-guo,LI Yu-hu,ZHANG Zhong-tang,CAO Cai-fang.Fundamental Research on Slag Type of Zinc Leaching Residue with Lead Concentrate in Lead Smelting by Side Blowing Reduction[J].Nonferrous Metals (Extractive Metallurgy),2021(6):10-17.
杨伟,何勇毅,代龙果,李玉虎,张忠堂,曹才放.锌冶炼渣搭配铅精矿侧吹还原熔炼直接炼铅渣型理论研究[J].有色金属（冶炼部分）,2021(6):10-17.
YANG Wei,HE Yong-yi,DAI Long-guo,LI Yu-hu,ZHANG Zhong-tang,CAO Cai-fang.Fundamental Research on Slag Type of Zinc Leaching Residue with Lead Concentrate in Lead Smelting by Side Blowing Reduction[J].Nonferrous Metals (Extractive Metallurgy),2021(6):10-17.
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