Bindemittel zur Stabilisierung von Arsenenthaltenden Abfällen

An hydraulic binder including gypsum, anhydrite, or their mixture is used for stabilizing arsenical wastes. An Independent claim is included for a method of stabilizing arsenical wastes by using the hydraulic binder. The arsenical waste is first mixed with an iron salt, and then the binder is added....

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	COJAN, JEAN-YVES
Format:	Patent
Sprache:	ger
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING ORPROTECTING AGAINST HARMFUL CHEMICAL AGENTS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE DISPOSAL OF SOLID WASTE FIRE-FIGHTING HUMAN NECESSITIES LIFE-SAVING LIME, MAGNESIA METALLURGY PERFORMING OPERATIONS RECLAMATION OF CONTAMINED SOIL SOIL REFRACTORIES SLAG TRANSPORTING TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	An hydraulic binder including gypsum, anhydrite, or their mixture is used for stabilizing arsenical wastes. An Independent claim is included for a method of stabilizing arsenical wastes by using the hydraulic binder. The arsenical waste is first mixed with an iron salt, and then the binder is added. The iron salt addition is preferably a mixture of two salts selected from iron, preferably ferrous, sulfate, iron chloride or iron nitrate.