Process for manufacture of ferric nitrate

摘要

A novel process for the manufacture of an aqueous ferric nitrate solution is provided. This process overcomes the passivation problem associated with the reaction of nitric acid and iron. The process is effected at a critical reaction temperature less than the ferric nitrate-to-ferric oxide decomposition temperature, thereby yielding a reaction product low in ferric oxide. The process involves repeated cycling of nitric acid through a bed of pieces of iron.