A method for the preparation of highly pure aluminum chloride

摘要

In a process for the production of aluminium chloride by condensation of gaseous aluminium chloride in a fluidised bed of aluminium chloride particles, the gaseous aluminium chloride is introduced into the bed at an inlet speed of 18 m/s to 90 m/s. The size of the particles of aluminium chloride in the bed is also maintained at less than 500 microns by periodically removing the larger particles which stay in the lower part of the fluidised bed. The aluminium chloride obtained has a purity enabling it to be used in an electrolytic reduction process for the production of metallic aluminium.