Process and plant for producing hot metal

摘要

A process for producing hot metal includes partially reducing granular raw materials containing iron oxide with a carbonaceous reducing agent in a fluidized bed reactor at a temperature of at least 850° C. so as to obtain a reduced mixture. The reduced mixture is cooled to between 600° C. and 800° C. in a heat exchanger apparatus using a preheated process gas as a cooling medium that is preheated to between 300° C. and 500° C. before being introduced into the heat exchanger apparatus. The reduced mixture is then supplied to a smelting reduction unit via a discharge system.

主权项

1. A process for producing hot metal, comprising:
partially reducing granular raw materials containing iron oxide with a carbonaceous reducing agent in a fluidized bed reactor at a temperature of at least 850° C. so as to obtain a reduced mixture; preheating a process gas to a temperature between 300° C. and 450° C.; introducing the preheated process gas into a heat exchanger apparatus; cooling the reduced mixture to between 600° C. and 800° C. in the heat exchanger apparatus using the preheated process gas as a cooling medium; and then supplying the reduced mixture to a smelting reduction unit via a discharge system.