System and method for iron ore byproduct processing

摘要

Processing byproduct material from a direct reduction process of iron ore to reclaim iron and other materials from the byproduct. The systems and methods employ gravity separation tables to separate the iron from other byproduct material constituents. The byproduct material constituents may be size reduced, processed to remove dust, and sized prior to processing by the gravity separation.

主权项

1. A method for separating iron from a byproduct material of a direct reduction process of iron ore comprising the steps of:
receiving the byproduct material of a direct reduction process of iron ore; processing the byproduct material using an air aspirator to generate a heavy fraction byproduct material and a light fraction byproduct material; sizing the heavy fraction byproduct material from the air aspirator, wherein the particles comprising the sized heavy fraction byproduct material are within a discrete size range; and separating an iron fraction from the sized heavy fraction byproduct material using a gravity separation table; and sizing the sized heavy fraction byproduct material from the gravity separation table, wherein the iron fraction from the sized heavy fraction byproduct material is not separated using a magnetic separator; the sizing of the sized heavy fraction byproduct material occurs after the separation of the iron fraction from the sized heavy fraction byproduct material using a gravity separation table; and the heavy fraction is separately sized from the sized heavy iron fraction.