For conveyors intended for the transport of very abrasive materials (slag, glass, bed ash, fly ash, aggregates, sand, corundum, etc.) into steel or steel. RATAJ® stainless steel spiral conveyors (Types RLE, RLNE) are fitted with basalt inserts. The thickness of these inserts is 20 mm and they are supplied "tailor-made" according to a specific design of the conveyor in the form of a trough or pipe. The temperature resistance of the basalt inserts is up to about 400 °C.
In some cases it is possible to operate these conveyors for a short period of time without the conveyed material, further to convey materials that are easily compacted to form glued and hard crusts. plastic inserts easily removed.
INSERT: Type - RLE, RLNE