钢渣在企业内部的循环使用是钢渣资源化利用的一种途径，但仍然有一个亟需解决的问题，即钢渣的循环会造成磷在钢铁流程内的富集，影响冶炼过程和钢材品质。本文探究了通过施加电场脱除熔渣中磷元素的可行性，希望以此来提高钢渣在钢铁企业内部的循环利用率。试验中以钢液和石墨棒为电极，向熔渣中施加1.5 V~6.0 V的电压并改变电压施加方向，来研究在不同的电场作用下熔渣中磷元素的迁移特性。试验结果表明：当负极为钢液时，熔渣中的(P2O5)含量随电压增加而降低，最低时(P2O5)含量为空白试样的75%。当负极为石墨棒时，熔渣中(P2O5)含量的降低程度更大，最低时熔渣中(P2O5)含量为空白试样的15%。不论电压方向如何，在负极附近熔渣中(P2O5)含量要低于远离负极的熔渣，同时负极附近熔渣的碱度要高于远离负极的熔渣。通过分析上述结果可知：磷在负极发生还原溶解于钢液中或以气体的形态离开熔渣。当负极为石墨棒时，施加外加电场还具有加速熔渣中的磷向钢液中迁移的作用。 The recycling of steel slag in enterprises is a way to utilize steel slag as a resource, but there is still an urgent problem to be solved, that is, the recycling of steel slag will cause the accumulation of phosphorus in the steelmaking process and affect the quality of steel. This article explores the feasibility of removing phosphorus in molten slag by applying an electric field, hoping to improve the recycling rate of steel slag in steel enterprises. In the experiment, liquid steel and graphite rod were used as electrodes to apply 1.5 V~6.0 V voltage to slag and change the direction of voltage application to study the migration characteristics of phosphorus in slag under different electric fields. The test results show that when the negative electrode is molten steel, the P2O5 content in the slag decreases with the increase of voltage, and the P2O5 content is 75% of the blank sample at the lowest point. When the negative electrode is a graphite rod, the reduction of the P2O5 content in the slag is greater, and the P2O5 content in the slag is 15% of the blank sample at the lowest point. Regardless of the voltage direction, the content of P2O5 in the slag near the negative electrode is lower than that of the slag away from the negative electrode, and the alkalinity of the slag near the negative electrode is higher than that of the slag away from the negative electrode. By analyzing the above results, it can be seen that phosphorus is reduced to dissolve in molten steel or leave slag in the form of gas in the negative electrode. When the graphite rod is negative electrode, the applied electric field can also accelerate the migration of phosphorus from slag to molten steel.