A process for direct reduction of iron oxide in a shaft furnace. The cores are formed of a material having a higher thermal conductivity than the coating solder. A frame with an inclined plate is received in the chamber and two parallel rails extend from a top surface of the inclined plate. The present invention is also directed to a method of making absorbent composites having enhanced intake properties. The binder and inserts may install into the retain bracket before or after the movable portion is closed onto the stationary portion.