FIELD: metallurgy, chemistry.
SUBSTANCE: method includes dehydration of chlorine-magnesium raw cmaterial at first stage in chambers of furnace of boiling layer by means of supplying fuel gases into raw material layer, cooling of gas distributing grid of furnace, supply of chlorine-magnesium raw material for the second stage of dehydration in chlorinator, withdrawal of exhaust gases and catching of dust in cyclones Exhaust gases produced in chlorinators of the second stage of dehydration of chlorine-magnesium raw material are supplied for cooling of the gas distributing grid, while heated at that exhaust gases are mixed with fuel gases and produced mixture is supplied into a boiling layer of all furnace chambers.
EFFECT: invention facilitates reducing of costs for dehydration and utilisation of exhaust gases and preventing pollution of environment.
5 cl, 2 ex.
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