METHOD OF PRODUCING MAGNETITE Russian patent published in 2014 - IPC C01G49/08 C09C1/24 C25B1/00 

FIELD: chemistry.

SUBSTANCE: method of producing magnetite includes oxidising iron during electrolysis. The process is carried out in a three-electrode double-anode electrolysis cell into which 1M sodium hydroxide solution is fed and current is supplied. Voltage is equal to 10 V; cathodic current density on a titanium cathode is equal to 0.2 A/cm²; anodic current density on a St3 anode is equal to 0.3 A/cm², and on a lead dioxide anode on a titanium base is equal to 0.1 A/cm². The method includes simultaneous dissolution of the St3 anode and release of oxygen at the lead dioxide anode on a titanium base.

EFFECT: invention enables to obtain magnetite without supplying oxygen to oxidise iron and improves purity of the product.

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