2. Iron Recovery
from High-Fe Red Mud
Research on
the technology of recovery iron from red mud was started early in 1970s. Iron
can be separated and enriched through reducing roasting and a series complex
processing. While the means of wet high gradient magnetic separating red mud
output directly from Bayer process is a simple and feasible way.
In October of 2010, Aluminum Corporation
of China (CHINALCO) announced their dramatic breakthrough on iron recovery from
red mud.
Guangxi Branch of CHINALCO separates
iron by high gradient magnetic separator from sediments of bauxite residues
after Bayer Process, producing irons with 55% total Fe.
