According to one embodiment, a molten metal impeller is provided. It includes a generally cylindrical graphite body having a plurality of passages extending from a top surface to a side wall. A hub is formed in the center of the graphite body. A ceramic cap member is secured to the top surface of the graphite body. The cap member is comprised of a ring forming a central passage shaped cooperatively to overlap the hub and a plurality of vanes extending radially from the ring to an outer rim. The rim has a height between adjacent vanes which increases in the direction of intended impeller rotation. The rim further has a height which decreases from its radially outer most edge to an inner most edge.
申请公布号
EP2591235(A2)
申请公布日期
2013.05.15
申请号
EP20110801530
申请日期
2011.07.05
申请人
PYROTEK INC.
发明人
TETKOSKIE, JASON;BRIGHT, MARK;HENDERSON, RICHARD, S.