Compositions: coating or plastic – Coating or plastic compositions – Proteinaceous material containing
Patent
1984-02-17
1985-03-12
Poer, James
Compositions: coating or plastic
Coating or plastic compositions
Proteinaceous material containing
C04B 2300
Patent
active
045043213
ABSTRACT:
The solids content of toxic waste chromium ore waste and of certain types of mud or sludge dredged from salty or brackish water are combined together and stabilized in a hardened state by adding to the settled volume of the mixed materials about 5% to about 30% by weight of the solids of finely ground basic granulated blast furnace slag, with intimate mixing, and maintaining the mixture in a quiescent state to produce a sedentary mass having load supportive properties suitable as landfill and whose impermeability effectively prevents leaching of any chromium ore waste by contact with surface or ground water. In this process for producing a sedentary and essentially impermeable load bearing mass toxic hexavalent chromium in the chromium ore waste is reduced to less or non-toxic trivalent chromium.
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patent: 4132558 (1979-01-01), Uchikawa et al.
patent: 4284514 (1981-08-01), Wright
patent: 4338134 (1982-07-01), Zumunster
patent: 4377483 (1983-03-01), Yamashita et al.
patent: 4404105 (1983-09-01), De Lockerente et al.
patent: 4443260 (1984-04-01), Miyoshi et al.
Kapland Mitchell A.
Robinson, Jr. Melville W.
Poer James
Trident Engineering Associates, Inc.
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