Art for a region of sheet duennfilm - dryer

摘要

The invention relates to a doctor blade, which can be used in the dryers of the type with a thin layer is used to treat radioactive waste. & br / the scraper blade is characterized in that it comprises a plate 22, formed of an alloy that is resistant to wear and having a hardness greater than 1,2 times the hardness of haematite alpha - fe2o3 contained in the waste, said plate being fixed on the plate 3 on its radially outer edge 18, in that the fixing of the plate 22 can be made by welding or by brazing or by means of a mounting part 23 and a mechanical bolt 24, said alloy resistant to wear is chosen from the group comprising the tungsten carbide, titanium nitride, silicon nitride, a cermet based on alumina and boron carbide. & br / application to the nuclear power stations and installations that are similar. & br / (see appended drawing in bopi) & br / & & br /