Process for the continuous production of calcium-cyanamide

Claim 1

A PROCESS FOR THE CONTINUOUS PRODUCTION OF CALCIUM CYANAMIDE BY CHEMICALLY REACTING AN ELEMENTARY NITROGEN WITH FINELY DIVIDED SOLID CALCIUM CARBIDE WHICH COMPRISES FORMING A HOMOGENEOUS SUSPENSION OF FINELY DIVIDED CALCIUM CARBIDE WITH A COMBUSTIBLE HYDROCARBON GAS, BLOWING SAID SUSPENSION AS A JET INTO A REACTION ZONE MAINTAINED AT A TEMPERATURE WHICH WILL EFFECT REACTION BETWEEN CALCIUM CARBIDE AND NITROGEN, SEPARATELY INTRODUCING OXYGEN AND A GAS CONTAINING ELEMENTARY NITROGEN HEATED TO APPROXIMATELY REACTION TEMPERATURE INTO SAID REACTION ZONE IN THE IMMEDIATE NEIGHBORHOOD OF THE POINT OF INTRODUCTION OF SAID SUSPENSION, THE RATIO OF OXYGEN TO COMBUSTIBLE HYDROCARBON GAS BEING HIGH ENOUGH TO CONVERT SAID HYDROCARBON GAS INTO CARBON MONOXIDE AND HYDROGEN, AND SO MAINTAIN THE HIGH TEMPERATURE NECESSARY TO CAUSE THE REACTION BETWEEN CALCIUM CARBIDE AND NITROGEN TO OCCUR, BUT INSUFFICIENT TO CAUSE THE PRODUCTION OF SUBSTANTIAL QUANTITIES OF CARBON DIOXIDE AND WATER, MAINTAINING THE CALCIUM CARBIDE IN SUSPENSION UNTIL THE REACTION IS COMPLETE, COOLING THE REACTION PRODUCTS AND SEPARATING THE CALCIUM CYANAMIDE SO FORMED FROM THE OTHER REACTION PRODUCTS AND FROM THE UNCOMBINED CALCIUM CARBIDE AND RECOVERING SAID CALCIUM CYANAMIDE.