Steel factories, smelting and alloying industries always require a lot of energy consumption, and reducing the consumption or recycling of wasted energy has always been considered as one of the important strategies to solve this problem. The production process in the aforementioned industries has some by-products, one of which is slag resulting from the chemical reaction of molten materials with some existing elements and materials. Slag also has a very high temperature due to contact with the melt and a lot of thermal energy is stored in it. Currently, this thermal energy is transferred to the environment in a useless way. The existence of a suitable mechanism for using this wasted energy would be very profitable and useful. The purpose of this research is to find a way to recycle the thermal energy in slag and use it in industries. In this article, an attempt has been made to use this heat to generate electricity using an innovative mechanism that is presented for the first time