A plate conveyor belt, and a furnace with such a conveyor belt, for transporting a material web which is to be continuously thermally treated using a gaseous tempering medium. The plate conveyor belt includes conveyor belt segments connected together in an articulated manner and each of which has a flat cover plate with a contact surface for the material web to be treated. The cover plate has openings for conducting the gaseous tempering medium, which can be conducted through the material web. The openings in the cover plate are arranged corresponding to the transport of the material web which is as wide as possible, and edge-side openings of the cover plate at least along a longitudinal face of the plate conveyor belt can be blocked from conducting the tempering medium via a wall-shaped blocking element in order to thermally treat a narrower material web.

A conveyor belt, in particular a pouch conveyor belt, with a first layer, which comprises a material with high flexibility, and to a conveying installation, in particular a pouch conveying installation, with such a conveyor belt.

An installation for melting metallic scraps, and particularly adapted for melting aluminium scraps, includes a system for cleaning the metallic scraps, and in particular for cleaning the scraps from organic compounds.

A heat treatment furnace jig having a box-like frame including a rim part and a bottom part, the bottom part being removable from the rim part, and a removable net of woven strands disposed in the box-like frame and supported from below by the bottom part. The net has a triaxial weave of strands, each strand having a bundle of carbon fibers that are aligned without twisting, wherein, among the woven strands, strands of at least one direction are held by two strands in another direction, and the net is impregnated with a matrix material.

The present invention improves the strength of the bottom (net) of the jig and makes it more difficult and unlikely for deviation of the mesh to occur. A workpiece is loaded on the net (2) of the heat treat furnace jig (hereinafter, heat treatment furnace jig). In the net (2), a first strand (10), a second strand (20) and a third strand (30) are in contact at a contact point (X1). Near the contact point (X1), the second strand (20) overlaps the first strand (10) from above and the third strand (30) overlaps the first strand (10) from below. As a result, the first strand (10) is held between the second strand (20) and the third strand (30) in the up/down directions.

An installation for melting metallic scraps, and particularly adapted for melting aluminium scraps, includes a system for cleaning the metallic scraps, and in particular for cleaning the scraps from organic compounds.

A jig frame and a wire mesh tray are reliably and simply fixed, and the wire mesh tray is simply replaced. A heat treatment jig includes a jig frame having on an upper surface side thereof an opening and a wire mesh tray having an upper end portion that abuts on an upper end portion of the jig frame. The wire mesh tray is detachably mounted on the jig frame by a plurality of clips. The clips grip the upper end portion of the jig frame and the upper end portion of the wire mesh tray.