C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
261/41, 261/45,
C02F 9/00 (2006.01) C04B 18/02 (2006.01) C04B 18/04 (2006.01) C04B 28/24 (2006.01) G21F 9/16 (2006.01) G21F 9/30 (2006.01)
Patent
CA 1073476
ABSTRACT OF THE DISCLOSURE Process for the treatment of toxic waste by means of a silicate, in the presence of water, in such a way as to form a solid aggregate includes treatment of the silicate in an acid medium, for the purpose of obtaining silicic acid of low molecul- ar weight; mixing the silicic acid with the waste to be treated, in the presence of water and in a sufficiently acid medium to cause the waste to undergo at least partial solution; precipita- tion of a gel of high molecular weight from the resultant aqueous mixture; addition thereto of a mixture which reacts with the gel of high molecular weight to form a silicate, possible in the presence of a cementation agent, in such a way as to produce a sludge, and the hardening of the sludge into a solid aggregate.
256476
Rysman de Lockerente Serge H.
Van de Voorde Norbert L.
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