Abstract
The present paper is an overview of the benefit of the foaming slag being used as major elements in the energy efficiency campaign. The aim of this work is to show and demonstrate the importance of using a foaming slag in the furnaces to reduce energy consumption, the heat loss or either to decrease the melting time during the process. Different methodologies have been used according to authors. Some have used injected gases to enhance the creation of the foam, other have added some carbon particles contents which creates a chemical reaction by forming bubbles as a foam and insulator layer. Impressive results have been found and real changes have been made. The results have contributed to different purpose such as: decreasing the global warming by controlling the retaining heat, decreasing the noise and vibration in furnace and finally decrease the use of the electrical energy consumption.