PROCEDURE FOR PREPARING CARNALLITE RAW MATERIAL TO ELECTROLYTIC PRODUCTION OF MAGNESIUM AND CHLORINE

摘要

FIELD: metallurgy. ^ SUBSTANCE: invention refers to non-ferrous metallurgy, particularly to procedure of preparing chlorine-magnesium raw material to electrolytic production of magnesium and chlorine by dehydration. The procedure consists in supply of raw material into a multi-chamber furnace of a boiling bed, in carrying out the first stage of dehydration of raw material by successive displacement of raw material through a row of horizontally arranged furnace chambers and in supply of furnace gases into each chamber. Gases are generated by combustion of mixture of natural gas and chlorine-containing gases in a furnace. Further, the procedure consists in performing the second stage of dehydration in a chlorinator and in production of dehydrated carnallite for electrolytic production of magnesium and chlorine and in utilisation of fumes of the second stage of dehydration. At temperature 125C fumes are supplied into a fire box of each chamber of the boiling bed furnace for combustion with natural gas at maintaining ratio of fumes to natural gas in mixture as (15-25):1. ^ EFFECT: reduced material expenditure for utilisation and extraction of chlorine from fumes and prevention of environment pollution. ^ 2 cl, 1 ex