Portable metallic airtight container for accommodating self-ignitable powder mixture i.e. silicon-powder mixture, used in drawing machine, has bypass valve adjusting inert gas before bringing powder mixture into container interior

摘要

The container (10) has a body part (12) with a pivotable lid part (16) that is airtightly closed towards the body part over laterally arranged fasteners (18) by sealing elements (20) in a closing position. An air-tight filling opening (22) is arranged in the lid part. A flange is formed towards the interior of the body part at the opening. A replaceable, gas-permeable big bag is attached to the flange. A bypass valve (30) adjusts inert gas i.e. argon, before bringing a self-ignitable powder mixture into a container interior. An excess pressure in the container amounts to 0.04 bar.