NEUTRALISATION TECHNIQUE OF METALLIC MERCURY BY IMMOBILISATION Russian patent published in 2008 - IPC C22B43/00 C22B3/04 

FIELD: metallurgy.

SUBSTANCE: invention concerns industrial sanitation and environmental protection field, at usage in manufacturing and in domestic conditions of metallic mercury, its containing devices and facilities, and also of amalgams, and is intended for neutralisation of mercury at its ingress both on surfaces of different materials and into volumes (material, brick, concrete and so forth). Neutralisation technique of metallic mercury by immobilisation includes its oxidation by means of treatment by water solution of hydrogen peroxide. At that additionally to oxidation it is implemented mercury deposition by means of simultaneous or successive treatment by water solution of reagent, transferring metallic mercury into insoluble or sparingly soluble in water compound of natural or anthropogenic composition. In the capacity of reagent there are used water-soluble compounds of alkaline or alkaline-earth metals for instance, sulphates, phosphates or carbonates.

EFFECT: effectiveness increase of process at excluding of mercury - organic compounds formation.

5 cl, 5 ex