| abstract |
A production method of iron carbide for preventing easy formation of a metallic carbide on the inner surface of a heating tube of a tubular heating furnace for heating a reducing gas and a carbonizing gas supplied to a reaction furnace, comprising heating the carbonizing gas supplied to the reaction furnace (1) by a combustion exhaust gas after heating of the reducing gas and a cycling gas inside the tubular heating furnace (6), introducing then their mixed gas into the reaction furnace (1), and reducing and carbonizing the iron-containing raw material in the reaction furnace (1). |