Abstract
In order to clarify the combustion reaction when PC (Pulverized Coal) is blown into the tuyeres of a blast furnace and the effects of resultant unburnt PC on reactions, in the furnace, some fundamental experiments were carried out. The main results obtained are as follows:
(1) Most of PC blown through the tuyeres rapidly burns in the raceway.
(2) Unburnt PC tends to adhere to the softened and fused ore bed.
(3) Unburnt PC adhering to the ore bed is consumed by the direct reduction of FeO and improves the softening and melting-down properties of ores effectively.
In this way, PC entering inside the blast furnace without burning was found to be consumed effectively.
