RATE OF METHANE-STEAM REFORMING REACTION ON THE SURFACE OF MOLTEN BF SLAG - FOR HEAT-RECOVERY FROM MOLTEN SLAG BY USING A CHEMICAL-REACTION

A new concept for heal recovery from molten slag has been proposed. It involves exchanging energy between sensible heat of slag and chemical energy of gas mixture through methane-steam reforming and its reverse reactions. The validity of this concept was fundamentally verified by obtaining kinetic data on the reforming reaction using molten blast f urnace slag samples. This includes essential information such as tempe rature dependence and effects of composition of reactant gas on the ch emical reaction rate. The sulfur containing in slag is also found to p lay a significant role in the reforming reaction.