METHOD OF PREPARING RADIOACTIVE DUST FOR LONG-TERM STORAGE OR BURIAL AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2019 - IPC G21F9/36 

FIELD: chemistry.

SUBSTANCE: group of inventions relates to environmental protection. Method of preparation of radioactive dust for long-term storage or disposal includes loading of dust caught by gas cleaning system into container and its filling with liquid slag. Radioactive dust is loaded into hermetically sealed metal storage tank. Container is placed in lined enclosing container, which is poured with melt liquid acidic slag with temperature of 1450–1600 °C in volume of 90–95 % of volume of lined part of container, wherein acid slag contains, wt %: SiO₂ - 50–55; Al₂O₃ - 6–8; ∑FeO - 6–7; MnO - 1–5; Cr₂O₃ - 1–10; CaO - 9–10; MgO - 8–9, others - rest, after solidification of slag and cooling its surface to 50 °C container is closed with a cover, sealed and transported. There is also a device for preparation of radioactive dust for long-term storage or burial.

EFFECT: group of inventions improves level of safety of long-term storage or burial of radioactive dust.

13 cl, 2 dwg