Process for producing granulated catalyst for the synthesis of ammonia

A process for producing a granular catalyst for the synthesis of ammonia which comprises simultaneous melting and oxidation of iron with the use of a promoter selected from the group consisting of potassium carbonate, calcium oxide, alumina and mixtures thereof in a melt layer of 30 to 70 mm thickness of the resulting catalyst mass, followed by granulating said melt with a current of air ensuring a horizontal movement of the resulting catalyst granules and cooling them to a temperature of 1,000.degree. C. and then reducing the resulting granules as they cool spontaneously with a reducing gas.