卡尔多炉处理铜阳极泥炉渣性能调控  

Regulationon slag performance of Kaldor furnace for copper anode slime smelting

作　　者：宗红星 赵俊学[2] 胡爱琳 吴红星 崔雅茹[2] 郑江华 张笑天 ZONG Hongxing;ZHAO Junxue;HU Ailin;WU Hongxing;CUI Yaru;ZHENG Jiahua;ZHANG Xiaotian(Jinchuan Nickel and Cobalt Research&Design Institute Co.Ltd.,Jinchang 737100,China;School of Metallurgical Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China)

机构地区：[1]金川镍钴研究设计院有限责任公司,甘肃金昌737100 [2]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》2023年第2期39-47,共9页China Nonferrous Metallurgy

摘　　要：卡尔多炉处理铜阳极泥时,由于铜阳极泥中含有脱模剂带入的BaSO_(4),影响了炉渣性能,而且不同批次的铜阳极泥成分不同,需要在冶炼过程中不断对炉渣性能和工艺参数进行改进和优化,才能取得良好的指标。目前文献对含BaSO_(4)的炉渣性能研究较少,本文基于卡尔多炉处理铜阳极泥工业实践及全流程炉渣成分、温度等数据,采用FactSage热力学软件绘制了BaSO_(4)5%~50%范围内的基准炉渣Na_(2)O-SiO_(2)-PbO-BaO四元相图,根据相图对熔炼过程中不同BaSO_(4)含量的炉渣熔化温度进行了测定,得到了不同BaSO_(4)含量的合理钠硅比,可在不增加渣量的情况下,将炉渣的熔化温度控制在1000℃以内,实现改善炉渣流动性、提升金属回收率的目的。本文还提出卡尔多炉处理铜阳极泥建议:提高冶炼效率来降低熔炼过程热损失;加强对阳极泥中Ba和Si的检测和配料控制,降低炉渣BaSO_(4)含量;加强还原熔炼阶段工艺操作的稳定性,以确保炉温和炉渣性能的良好匹配。In Kaldor furnace process for copper anode slime pyro-treatment,the slag performance will be affected byBaSO_(4)from demoulding agent,and the anode slime composition changes upon batches.So the slag composition and operating parameters in smelting process should be adjusted accordingly to reach better results.Up to now,there is fewer research results on the properties of BaSO_(4)containing slag.Based on relevant parameters from copper anode slime pyro-treatment practice,the slagphase diagrams of Na_(2)O-SiO_(2)-PbO-BaO system were calculated with FactSage and BaSO_(4)content in 5%~50%in this paper.The slag melting point inrelevant composition was measured.The feasible Na_(2)O/SiO_(2)in correspondant with BaSO_(4)content was obtained.The slag melting points can be controlled under 1000℃without increase the slag amount.The slag fluidity and the recovery of metal can be improved as a result.To promote the smelting process,it is proposed to improve smelting efficiency and reduce heat loss,to strengthen the batching controland the examination of Ba and Si in anode slimeto reduce BaSO_(4)content in the slime,keep the stability of the process operation in the reduction smelting stage to ensure better match of furnace temperature and slag performance.

关 键 词：铜阳极泥 卡尔多炉 炉渣性能 炉渣调控 配料控制 BASO4 Na2 O/SiO2 

分 类 号：TF811[冶金工程—有色金属冶金] X758[环境科学与工程—环境工程]