Method for the manufacture of a solid by the mixing of hydrates

Details Method for the manufacture of a solid by the mixing of hydrates Method for the manufacture of a solid by the mixing of hydrates

1994-11-22

1997-02-04

Suchfield, George A.

Hazardous or toxic waste destruction or containment

Containment

Solidification, vitrification, or cementation

588257, A62D 300

Patent

active

055992722

ABSTRACT:
Disclosed is a method for the manufacture of a solid that is practically insoluble in water and non-pollutant. pollutant. This method comprises a step in which there are mixed, in an aqueous medium, at least two compounds in order to obtain a paste. According to this method, one of the compounds or first compound comprises hydrates of alkaline earth oxides and another compound or second compound comprises hydrates of heavy metal oxides; the free water contained in the paste or liquid is present in the liquid in a proportion, in terms of quantities, of 20% to 60% by weight of the total mixture; the solid obtained being substantially without silicates and aluminates. The disclosed method is applicable, in particular, to waste treatment and to the field of civil engineering and construction.

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