An impeller for dispersing gas into molten metal includes a rectangular prism body having upper and lower faces and four side walls. The body has an opening extending through the upper and lower faces and defines a hub around the opening on the upper face. The impeller further includes a plurality of elongate grooves extending radially outwardly from the hub.
申请公布号
EP2044229(A2)
申请公布日期
2009.04.08
申请号
EP20070799572
申请日期
2007.07.13
申请人
PYROTEK, INC.
发明人
NEFF, DAVID;HENDERSON, RICHARD, S.;LUTES, LENNARD, D.;GRAYSON, JAMES