The invention relates to a method for producing pure melamine in a high-pressure
method. According to said method, in the first stage, the melamine melt is brought
into contact with hot NH3 and NH3 from the second stage and
in the second step is brought into contact with cold NH3 in such a way
that it is cooled to a temperature, which is 1-30 C. above the pressure-dependent
melting point of the melamine, before being optionally rested in a third stage
and subsequently treated in various ways.