Titanium Institute/VAMI propose two variants of magnesium electrolytic production process. The first variant is based on two-stage preparation of magnesium raw material -camallite (KC1 • MgCl 2 • 6H 2 0) for electrolysis. At the first stage, carnallite is dehydrated in fluidized bed dryers with on output of 400 t/day. Operation and control of the drying process has a high level of automation. The second stage of carnallite dehydration is carried out in electric chlorinators with an output of 150-200 t/day. In chlorinators, camallite is melted and chlorinets treated. Molten carnallite flows to the electrolysis cells. Electrolysis cells are connected in a flow line which operates as one highly productive electrochemical unit. By electrolyte flow, magnesium moves through electrolysis cells and accumulates in a separator cell from where it is extracted and transferred to the casting house for casting magnesium and magnesium alloys into ingots. Electrolysis cells current intensity is ~ 200-300 kA. Magnesium and magnesium alloys are refined in continuous refining furnaces with the capacity up to 100 t/day. The process is adopted at magnesium and titanium-magnesium plants of Russia, Kazakhstan, Ukraine. The best modem projects are realised at DSM Magnesium Plant (Israel). The second variant of magnesium electrolysis production process is based on high dehydration of carnallite in fluidized bed dryers by HC1 injection into chambers together with combustion gases. HC1 is gained from fuel burning in chlorine gas magnesium electrolysis cells. Solid highly dehydrated carnallite is charged into cells connected into flow lines having centralized magnesium collection. The process has passed pilot-commercial tests and is ready for industrial realization. Above mentioned carnallite processing variants can be used for different types of raw material: magnesite, magnesium chloride solutions, sea water, dolomite and carnallite.

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