Heat is lost from a furnace in a number of ways. With a conventional refractory configuration, the amount of heat lost is 5,376 kcal/m²･hr. Using the new refractory insulation block construction method “KSB Construction Method”, the amount of heat lost is 1,097kcal/m²･hr, a reduction rate of roughly 80%. This is a reduction equivalent to the energy consumption rate of 4.0kg-CO²/t-st.

Of the heat lost from the furnace, the loss from water cooling in the skid pipe accounts for 10% of its total heat loss. Insulation block construction allows for the removal of metal studs, and the application of insulating castables can significantly reduce heat loss.