Hazardous or toxic waste destruction or containment – Containment
Patent
1991-06-17
1993-09-14
Straub, Gary P.
Hazardous or toxic waste destruction or containment
Containment
423111, 423DIG20, 423130, 110345, 588900, B09B 300, A62D 300, C01F 100
Patent
active
052451151
ABSTRACT:
The invention relates to a thermal shock treatment in a reactor of ground spent pot linings, constituted both by carbon-containing products and silico-aluminous products impregnated with fluorine-containing mineral compounds, mixed with a pulverulent mineral additive able to combine hot, with or without melting or fusion, with the fluorine-containing impregnating compounds in order to form new stable and insoluble compounds such as CaF.sub.2, binary, ternary or quaternary compounds of NaF, CaF.sub.2, SiO.sub.2, Al.sub.2 O.sub.3, CaSO.sub.4, Na.sub.2 SO.sub.4, of the nephelite, hauynite or similar type.
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patent: 5143001 (1992-09-01), Eriksson
patent: 5164174 (1992-11-01), Bawken et al.
Ogden Environmental Services, Phase 2 Development Program for the Circulating Bed Combustion of Spent Potliners, Sep. 1987.
Barrillon Eric
Bontron Jean-Claude
Personnet Pierre
Aluminium Pechiney
Straub Gary P.
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