Slide-type extractor

A slide-type extractor for the extraction and the transfer of granular mineral materials at high temperature contained in a first enclosure including:

• a fixed upper part and a mobile lower part delimiting a duct, this duct being provided with an inlet mouth suitable for being connected to the first enclosure and with an outlet mouth the inlet (36a) and outlet mouths being horizontally and vertically offset;
• the mobile lower part being movable in a determined movement direction reciprocally between a advanced position and a retracted position to allow a flow of the granular mineral materials in the duct;
• and
• means for moving and guiding the mobile lower part relative to the fixed upper part;
• wherein the fixed upper part and the mobile lower part each comprise a metal outer shell, and an inner shell made by stacking at least:
• a first coating of thermally insulating material mounted on the metal outer shell;
• and
• a second coating of refractory material mounted on the first coating.