高锌含量下ZnO-FeO-SiO_(2)-CaO-Al_(2)O_(3)渣系黏度研究  

Viscosity of ZnO-FeO-SiO_(2)-CaO-Al_(2)O_(3) slag systemwith high zinc oxide content

作　　者：欧阳坤 豆志河 OUYANG Kun;DOU Zhihe(Shaoguan Smelter,Zhongjin Lingnan Non-ferrous Metal Company Limited,Shaoguan 512000,China;School of Metallurgy,Northeastern University,Shenyang 110819,China)

机构地区：[1]深圳市中金岭南有色金属股份有限公司韶关冶炼厂,广东韶关512000 [2]东北大学冶金学院,辽宁沈阳110819

出　　处：《中国有色冶金》2023年第6期125-130,共6页China Nonferrous Metallurgy

基　　金：广东省重点领域研发项目(2022B0111130002)。

摘　　要：ZnO-FeO-SiO_(2)-CaO-Al_(2)O_(3)是铅锌火法冶炼过程中重要渣系,本文研究高锌含量下ZnOFeO-SiO_(2)-CaO-Al_(2)O_(3)渣系的黏度,为进一步优化铅锌氧化渣还原熔融设计提供理论支撑。研究过程中采用内旋转圆柱法测量了不同组成成分下ZnO-FeO-SiO_(2)-CaO-Al_(2)O_(3)渣系的黏度,采用傅里叶红外光谱仪测定了高温淬冷渣的结构,并计算了不同熔渣成分下的表观活化能。研究结果表明:初始ZnO含量(16%~32%)的增加可降低ZnO-FeO-SiO_(2)-CaO-Al_(2)O_(3)系炉渣黏度;进一步增加ZnO含量(>36%)则会使黏度大幅增加;当ZnO含量为36%时,温度较高(>1623 K)时,Fe/SiO_(2)和CaO/SiO_(2)的增加可以降低炉渣黏度,但随着温度的降低,Fe/SiO_(2)和CaO/SiO_(2)的增加会使得炉渣黏度显著增加。ZnO-FeO-SiO_(2)-CaO-Al_(2)O_(3) is an important slag system in the lead and zinc pyrometallurgy process,and the study of the viscosity of ZnO-FeO-SiO_(2)-CaO-Al_(2)O_(3)slag system with high zinc oxide content could provide theoretical support for the design of lead and zinc oxide slag.The viscosity of ZnO-FeO-SiO_(2)-CaO-Al2O3 slag system with different compositions was measured by the rotating cylinder method involving a spindle.The structure of high temperature quenched slag was determined by Fourier infrared spectrometer,and the apparent activation energy of different slags was calculated.The results show that the initial increase of ZnO content(16%~32%)could reduce the viscosity of ZnO-FeO-SiO_(2)-CaO-Al_(2)O_(3),and further increase of ZnO content would greatly increase the viscosity.When the content of ZnO was 36%and experimental temperature was higher than 1623 K,the increase of Fe/SiO_(2)and CaO/SiO_(2)could reduce the slag viscosity,however,the increase of Fe/SiO_(2)and CaO/SiO_(2)would significantly increase the slag viscosity as the decrease of experimental temperature.

关 键 词：铅锌混合精矿 熔池熔炼 黏度 炉渣 表观活化能 

分 类 号：TF812[冶金工程—有色金属冶金] TF813TF803.11