EAF LOWER SHELL

A typical EAF has a cylindrical shape. It's composed by the lowest part, the bottom, that has a spherical shape like a dish. It's connected to a cradle arm which has a curved segment with geared teeth that sits on a rocker rail. This system is needed in order to tilt the furnace for tapping (spout or EBT system) at one side and for removing slag from the other side (slag door). The bottom is covered by a refractory lining which generally is composed by a safety lining (normally bricks) and working lining at the top (normally ramming mass). In the EBT EAF the furnace bottom contains the tapping mechanism (eccentric bottom) and sometimes also a gas stirring elements (well blocks purging plugs).