LOCALISATION OF WASTES BY VITRIFICATION IN METAL CONTAINERS Russian patent published in 2014 - IPC B09B3/00 

FIELD: process engineering.

SUBSTANCE: invention relates to disposal of wastes. Proposed method comprises placing the wastes and vitrifying additive in metal container to fuse them so that fused glass is produced and cooling said fused glass. Said waste contains at least one chemical compound to be vitrified. Note here that at least one extra oxidiser is added to said container. Concentration of oxidiser per oxide in fused glass makes 0.1-20 wt %, preferably, 4-20 wt %, more preferably, 5-15 wt %, and most preferably, 10-13 wt % of fused glass weight. Vitrifying additive comprises at least one oxide selected from SiO₂, B₂O₃, Al₂O₃, Na₂O, Fe₂O₃, CaO, Li₂O, ZnO, ZrO₂.

EFFECT: simple localisation of, for example, cadmium, ruled out or limited release of reduced volatiles.

24 cl, 1 dwg, 3 ex