Influence of preparation conditions on the magnetic properties of iron oxide pigments obtained from industrial wastes

This work generalizes the published and new results that demonstrate the possibility of preparing gamma-Fe2O3 iron oxide pigments, not modified and modified with cobalt ions, from solid iron-containing wastes of metallurgy. The pigments offer magnetic properties that are as good as or surpass the properties of standard commercial powders obtained from reagent-grade sources. The variation of synthesis conditions allows the values and ratios of those or other magnetic characteristics of the product to be varied and offers the prospect of synthesizing the powders for various purposes.