UN PROCEDIMIENTO PARA LA PREPARACION DE CLORURO DE MAGNESIOANHIDRO.

摘要

1353353 Anhydrous magnesium chloride SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ NV 19 April 1971 [31 March 1970] 25517/71 Heading C1A Anhydrous magnesium chloride is prepared by evaporating water at 200-300‹ C. and at under 2-5 atmospheres absolute from an aqueous solution containing exclusively or substantially magnesium chloride as dissolved salt to obtain a slurry in which the molar ratio between water and magnesium chloride is between 2 : 1 and 4À2 : 1 and in a second step evaporating water from this slurry in a fluidized bed the fluidizing gas being a drying gas and the temperature of the fluidized bed being below the melting point of magnesium chloride. The drying gas (e.g. hydrogen chloride) is defined as a gas capable of removing water from MgCl 2 .H 2 O without causing substantial hydrolysis to Mg(OH)Cl. The gas may be recycled to the fluidized bed after partial or total removal of water.