SLIDE-TYPE EXTRACTOR

摘要

The invention relates to a device (30) for extracting and transferring high-temperature granular mineral materials contained in a first chamber comprising a fixed upper part (32) and a mobile lower part (34) delimiting a duct (36), the mobile lower part (34) being movable in a given direction (50) between a forward position and a recoiled position and vice versa, so as to allow the granular mineral materials to flow in the duct (36). The device further comprises means (78, 80) for moving and guiding the mobile part (34) relative to the fixed part (32). The fixed part (32) and the mobile part (34) each comprise an outer jacket (38; 58) made of metal, and an inner jacket (40; 60) made by stacking at least a first coating (42; 62) made of a thermally insulating material mounted on the metal outer jacket (38; 58) and a second coating (44; 64) made of a refractory material mounted on the first coating (42; 62).