FIELD: inorganic compounds technologies and nonferrous metallurgy. SUBSTANCE: in magnesium production process, hydrogen chloride is burned in carbon-hydrogen fuel torch in presence of hydrogen-containing material, for example water vapor, and combustion products are rapidly cooled (quenched) when mixed with jets of cold (10-50 C) secondary air getting in through nozzles disposed in lining. Furnace has casing, burner, combustion chamber, and cooling chamber. Between the two latter, there are canals in lining having inlet openings on outside surface of lining and outlets into furnace. Canals are oriented tangentially and at angle 60-90 deg. to longitudinal wall of furnace. EFFECT: increased degree of hydrogen chloride conversion and enabled production of specified composition of gasair mixture. 4 cl, 2 dwg, 2 ex
