Ferrous Oxides TRIZ Cases
- Bluish-Black Effect Pigments With Magnetite-Hematite Flake Coatings
A wet pH-controlled hematite and magnetite coating on dielectric flakes delivers deep black body color, blue interference, and high luster.
- Amorphous Iron Oxide Hydroxide Desulfurizer Preparation and Regeneration
Solid-state mixing yields amorphous iron oxide hydroxide with high sulfur capacity, while oxygen oxidation enables simple regeneration of the spent material.
- Alumina Purification via Ferrous Iron Oxalate Precipitation
Converts ferric iron to ferrous form for oxalate precipitation, eliminating iron inclusions and caking during alumina purification.
- Urchin-like Iron Oxide Thermal Oxidation Process
Room temperature thermal oxidation produces urchin-like iron oxide with controlled needle dimensions, eliminating complex hydrothermal synthesis steps.