DRY CHLORINATION PROCESS TO PRODUCE ANHYDROUS RARE EARTH CHLORIDES

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A process for producing at least one rare earth chloride from an ore containing the at least one rare earth comprises : contacting the ore containing the at least one rare earth with reactants comprising a carbonaceous reducing agent, chlorine, and a boron-containing Lewis acid in a chlorination reactor to produce a gaseous product and a non-volatile chloride mixture comprising the at least one rare earth chloride.