Manufacture of cyanamides

Claim 1

IN THE PROCESS OF MANFACTURING A METAL CYANAMIDE, SAID METAL BEING A MEMBER OF THE GROUP CONSISTING OF THE ALKALI AND ALKALINE EARTH METALS, BY REACTION BETWEEN SAID METAL IN THE FORM OF AN OXIDE THEREOF WITH A MATERIAL SELECTED FROM THE GROUP CONSISTING OF CARBON MONOXIDE, A CARBON DIOXIDE AND MIXTURES THEREOF AND AMMONIA AT A TEMPERATURE ABOVE 600*C., THE IMPROVEMENT WHICH COMPRISES INJECTING SAID OXIDE AS A SUSPENSION IN A CARRIER GAS SELECTED FROM THE REACTANTS CONSISTING OF CARBON MONOXIDE, CARBON DIOXIDE, AND MIXTURES THEREOF, INTO A REATION CHAMBER IN A FINELY DIVIDED CONDITIONS AT A TEMPERATURE SUBSTANTIALLY ABOVE THE REACTION TEMPERATURE TO DISTRIBUTE SAID OXIDE WITHIN SAUD REACTION CHAMBER, AND SIMULTANEOUSLY INTRODUCING AMMONIA GAS INTO SAID REACTION CHAMBER AT A TEMPERATURE ABOUT 500*C.