C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 28/02 (2006.01) B09B 3/00 (2006.01) C04B 18/18 (2006.01)
Patent
CA 2054251
A fixant is disclosed for fixing toxic organic compounds comprised in waste material comprising an inorganic binder based on calcium compounds mixed with an alumino silicate, and at least one metal sulfate which fixes said organic compounds and counteracts leaching, is disclosed. Preferably a combination of several metal sulfates, especially aluminium sulfate, manganese sulfate and ferric sulfate is used. Moreover, the fixant preferably comprises anorgano-clay compound, in particular a bentonite, a montmorillonite and a hectorite. The disclosure further describes a process of treating waste materialcomprising toxic organic compounds by mixing said waste material with said fixant, as well as a matrix formed from at least a set inorganic binder based ona cement and a silicate with environmentally harmful organic compounds containing waste material encapsulated therein, said matrix also comprising at least one metal sulfate which fixes said organic compounds and counteracts leaching is disclosed.
Costa Carmelo
Gowling Lafleur Henderson Llp
LandOfFree
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