Read about the beneficiation of Itibirite, you will find all you need.
The result is >65% Fe concentrate, utilising conventional beneficiation plant grinding and processing methods. SiO2 and other impurities are removed substantially in the process. The result is a high grade hematite ore very low in impurities.
The properties that matter are below, and these are indicated as being very low.
A12O3 (%)0.6 P (%) 0.04 LOI (%) 0.3
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