| 摘要 |
<p>An extraction device is provided for use when extracting a ceramic foam filter, as used for example in the production and processing of aluminium. The extraction device includes an anchor device (3) suitable for driving into the filter, said anchor device (3) having an anchor body (5) with a leading end and a trailing end, a screw thread (13) for engagement with the filter and a substantially pointed part (7) at the leading end for piercing a surface of the filter.</p> |
