Process and apparatus for fixing, encapsulating, stabilizing and

Details Process and apparatus for fixing, encapsulating, stabilizing and Process and apparatus for fixing, encapsulating, stabilizing and

1986-02-20

1988-11-01

Bell, Janyce

Coating processes

Heat decomposition of applied coating or base material

Coating decomposed to form carbide or coating carbonized

405129, 423 53, 427399, 427403, 4274197, B05D 302, C01G 3702, C01G 3714

Patent

active

047819448

ABSTRACT:
Heavy metals and compounds thereof and other toxic materials in industrial wastes, sludges, soils, incinerated ashes and the like are fixed and stablized in a char residue, obtained by critical region pyrolyzing techniques and appropriate proportions of cabonaceous materials intimately mixed with the sludge, to encapsulate the heavy metals with carbon bonded thereto which effectively detoxifies the residue and renders it immune to any substantial leaching out or later exposure to the toxic metals, such that the same is environmentally safe for such uses as landfill and the like.

REFERENCES:
patent: 4086319 (1978-04-01), Jones
patent: 4108677 (1978-08-01), Valigg
patent: 4142912 (1979-03-01), Young
patent: 4152470 (1979-05-01), Steinegger
patent: 4215989 (1980-07-01), Cartier
patent: 4332584 (1982-11-01), Muralidhara

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