Diagram of the Midrex direct reduction process, which transforms iron ore in iron. This process enables the production of about 2/3 of the world direct reducted iron.
<a href="//commons.wikimedia.org/wiki/User:Borvan53" title="User:Borvan53">Borvan53</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>, from <a rel="nofollow" class="external text" href="http://ietd.iipnetwork.org/content/midrex%C2%A9-process">The Institute for Industrial Productivity</a>