Access to hematite mines for the production of concentrate above 60% is based on domestic and foreign market demand in previous years in Iran.
In this way, the lack of use of advanced machines and methods has led to the accumulation of numerous depots called tailing.
With increasing market demand and shortage of hematite reserves, hematite accumulation tailing is considered as a secondary source of iron on which many mining operations have been performed.
These sources have a lower grade than concentrate and can be converted to concentrate by acquiring new high-grade technologies.
These resources are economically justified and reduce environmental problems.