PRODUCING OF PIG IRON FROM IRON-CONTAINING MATERIALS

摘要

A process for recovering pig iron from iron-containing concentrates produced from iron-containing ores and sands by forming agglomerates and reducing them in a natural gas smelter, in which the process makes maximum utilization of heat created in and by the process.

主权项

1. A method for producing pig iron by direct processing of iron-containing feed materials, comprising the steps of:
a. mixing iron-containing feed materials, carbonaceous reductant, and a fluxing agent to form a mixture; b. cold forming agglomerates from said mixture; c. preheating and pre-reducing at least a portion of said agglomerates to a temperature of 750 to 1200° C., and introducing said preheated agglomerated to a natural gas smelting furnace; d. melting the agglomerates at a temperature of from 1300 to 1760° C. and forming hot metal with a slag thereon; e. removing the slag; and f. tapping the hot metal as pig iron.