Process of producing solid sodium cyanide

A process of producing solid sodium cyanide, comprising granulating an aqueous sodium cyanide solution containing 30 to 45% by weight sodium cyanide and containing up to 5% by weight solids in a two-step process in countercurrent flow with heated air wherein in the first process step the aqueous sodium cyanide solution is passed through a fluidized bed in a fluidized bed granulator produced by passing heated air from the second process step through the fluidized bed granulator, the heated air being cooled down to a temperature of 60.degree. to 90.degree. C. in the first process stem and then passed through a cyclone to remove entrained sodium cyanide dust, the removed sodium cyanide dust being recycled to the fluidized bed, the fluidized bed producing a sodium cyanide granulate of 2 to 6 mm in size which is discharged from the fluidized bed granulator through a classifying discharge duct, said sodium cyanide granulate being dried to a residual moisture of 1.5 to 4% by weight, and wherein in the second process step the granulate produced in the first process step is dried in a further fluidized bed by an air stream with an initial temperature of 150.degree. to 230.degree. C. to a residual moisture content less than 1.5% by weight and is removed from the further fluidized bed through a cellular wheel.