This paper expounds the fundamentals of the formation of foamy slags.The melting processes and the systems of power supply of RP arc furnaces, which are related to the foaming of slags,are discussed.

• 探讨泡沫渣的形成基本原理，并讨论普通功率电弧炉所采取不同的操作方法，其渣系及供电制度等与泡沫渣形成的关系。