Device and method for crushing closed powder containing receptacles

摘要

The shredder assembly (5) is located inside a chamber (7) designed to contain the powder released when the containers (3) are shredded. The atmosphere in the chamber is of inert gas controlled by a system (30) so tha its nitrogen content is above 90 per cent and oxygen content is below 5 per cent by volume. The system incorporates a source (32) of inert gas with a membrane air separator and a feed pipe (34) to deliver it to the shredder chamber.