PROCESS FOR PRODUCING MOLTEN IRON AND APPARATUS THEREFOR.

摘要

Bedding carbon material (H) is charged onto the hearth of rotary hearth furnace(14), and carbon-material-incorporated pellets (D) containing powdery iron ore (A) and powdery coal (B) are placed on the bedding carbon material (H). The hearth is caused to pass through the inside of the rotary hearth furnace (14) to thereby attain not only heating reduction of the carbon-material-incorporated pellets (D) into solid reduced iron (F) but also heating dry distillation of the bedding carbon material (H) into char (G). Subsequently, these solid reduced iron (F) and char (G) substantially without cooling are charged into iron bath type melting furnace (16), and simultaneously oxygen gas is blown thereinto. The solid reduced iron (F) is melted, thereby obtaining molten iron (K). At least part of wastegas (M) from the iron bath type melting furnace (16) is subjected to cooling and dust removal and thereafter used as a fuel gas for the rotary hearth furnace (14).