Patent ID: 6019258
Filing Date: 2000-02-01
Classification: B22D

Abstract:
Refractory plates and a plate change device for a metallurgical vessel, the device having a chassis (12) mounted under the metallurgical vessel, at least one fixed upper plate (18) and at least one replaceable lower plate (22) said upper plate (18) and said lower plate (22) having a pouring orifice (21), means for applying pressure to force the lower plate (22) against the fixed plate, the chassis (12) having a front and guide means for receiving in the front a lower replacement plate (22a) alongside the lower plate (22) during pouring, and actuation means for bringing the lower replacement plate (22a) in the place of the replaceable lower plate (22) during pouring, wherein the upper fixed plate (18) and the lower replaceable plate (22) have identical polygonal peripheries and are offset angularly so that the upper fixed plate and replaceable lower plate do not overlap completely.