Researchers use waste slag to create energy and cut emissions
Monday, August 18, 2014 - 09:51
in Physics & Chemistry
Slag is a molten mixture of process waste ashes from the power and metallurgical industries. In gasification, slag is made from mineral impurities that remain after a carbon feedstock such as coal has been gasified. In metal refining, slag contains impurities removed from a metal while it is refined. Slag is basically waste that is landfilled in many countries, including the U.S. Two researchers at DOE's National Energy Technology Laboratory have found a way to make slag more valuable. They determined that by mixing two particular types of slag at a unique ratio they can generate energy and fuels.