摘要
目前我国铝电解用磷生铁存在铁碳压降高、增碳脱硫困难、使用周期后须报废、生铁加入量高、磷生铁成分不稳定等问题,本文运用ANSYS有限元分析软件建立了含接触电阻的铝电解槽阳极热场、应力场和电场仿真模型,并对其进行了正确性验证。通过不断调整磷生铁膨胀系数,得到不同磷生铁膨胀系数下阳极炭块应力及阳极压降,优化出最佳膨胀系数。并开展了工业试验,在工业试验一个阳极使用周期,通过改进铁碳压降测试技术,达到了降低阳极铁碳压降17.37 m V的节能效果。运用ANSYS有限元分析软件建立了含接触电阻的铝电解槽阳极热场、应力场和电场仿真模型,并对其进行了正确性验证。
Phosphorus pig iron used in aluminum electrolysis led to high iron-carbon voltage drop, difficult re-carburization and desulfurization, abandonment after the lifespan, high amount of added pig iron and unstable phosphorus pig iron. Thus, the finite element software ANSYS was used to build thermal couple field, stress field and electric field model of anode with contact resistance in aluminum reduction cell. And its correctness was verified. By adjusting the coefficient of expansion of phosphorus pig iron continually, the stress of the anode carbon block and the anode voltage drops with different coefficient of expansion can be obtained, and the curve of relationship between expansion coefficient and the anode voltage drop was fitted.Different anode carbon block in aluminum electrolysis shall be matched with phosphorus pig iron with different expansion coefficients, in order to reduce the iron- carbon contact resistance.Compound modifier was adopted to optimize performance of phosphorus pig iron. Industrial experiments were carried out, spending one anode cycle. And application and popularization spent three anode cycles. Test results show that anode iron-carbon voltage drop is reduced by17.37 m V.
出处
《金属材料与冶金工程》
CAS
2016年第3期46-51,共6页
Metal Materials and Metallurgy Engineering
关键词
铝电解
磷生铁
改性剂
aluminum electrolysis
phosphorous pig iron
modifier
