METHOD OF PRODUCING MAGNESIUM COMPOUNDS Russian patent published in 2020 - IPC C01F5/02 C01F5/14 C01F5/30 

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy, production of metal compounds, metal oxides, metal nanopowders, particularly, to production of magnesium oxide from liquid mineralized media - water of salty lakes, sea water, liquid wastes, and so forth. Method of producing magnesium compounds is characterized by feeding the initial mineralized liquid medium to preliminary preparation by electrolytic dissociation into a flow electrolytic cell, preparation of ferromagnetic fluid taken in amount of not more than 5 wt. %, subsequent supply of prepared initial mineralized liquid medium and ferromagnetic liquid into reactor-activator containing ferromagnetic longitudinal working elements, the number of which is determined by the condition of their free and unobstructed movement in the activator reactor under the influence of the electromagnetic field, provides the rotation of the mixture of liquid mineralized medium and ferromagnetic fluid together with ferromagnetic working elements in rotating electromagnetic field, characterized by frequency 50 Hz three-phase alternating current network with voltage of 380 volts, magnetic induction in reactor working area (0.9–1.1) T and at rotation speed of electromagnetic field in reaction zone to 3000 rpm, flow rate of initial liquid medium inside reactor is from 0.1 to 0.5 m/s. After treatment of mixture of mineralized liquid medium and ferromagnetic liquid in rotating electromagnetic field formed reaction mass is supplied to separation unit, in which nanosized ferromagnetic particles present in ferromagnetic liquid, adsorbed on ferromagnetic particles of magnesium compounds, are separated, as well as magnesium compounds contained in reaction mass in pure form and excess water with wastes.

EFFECT: technical result is higher efficiency of method due to increased efficiency and reduced power consumption, technological and hardware simplification of processing scheme, environmental safety.

8 cl, 1 tbl, 1 ex, 1 dwg