Cyclical batch processes for halogenation, such as chlorination, of minerals in a fixed bed using a plurality of cycles which include the steps of at least partially evacuating the bed, charging the bed with reactant gas, maintaining the reactant gas in the bed for a predetermined time, and exhausting...http://www.google.fr/patents/US7588741?utm_source=gb-gplus-shareBrevet US7588741 - Cyclical vacuum chlorination processes, including lithium extraction
Cyclical vacuum chlorination processes, including lithium extraction
