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US 3,945,919 AGranted
Process for the environmentally favorable destruction of solid and/or liquid cyanide waste
AssigneeDeutsche Gold- und Silber-Scheideanstalt vormals Roessler
InventorUlrich Schindewolf
Life of this patent
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Abstract
Solid and/or liquid cyanide waste is destroyed under environmentally favorable conditions by adding water to the cyanide and heating the mixture at high temperature and with the use of pressure.
Claims7
A process for destroying liquid or solid cyanide waste under environmentally favorable conditions consisting essentially of providing the cyanide with water in the presence of a salt of a transition metal as a catalyst and heating the aqueous mixture to a temperature of 120.degree. to 200.degree.C. at superatmospheric pressure to form ammonia and formic acid or a salt thereof.
Dependencies are inferred from the claim text.