| abstract |
Granulated catalysts for the synthesis of ammonia containing promotors are made by the formation of a melt of the catalyst mass the melting and oxidation of iron being simultaneously effected in a thin layer of the melt of the resulting catalyst mass; granulation of the melt is effected by means of an air current ensuring a horizontal movement of the forming granules and cooling thereof to the temperature of 1,000 DEG C, whereafter the resulting granules are reduced by a reducing gas upon their spontaneous cooling. |