Preparation of formcoke

Claim 1

A METHOD FOR PREPARING FORMCOKE FROM HIGH VOLATILE CAKING COAL COMPRISING SUBJECTING A PORTION OF HIGH VOLATILE CAKING COAL TO LOW TEMPERATURE CARBONIZATION UNDER FLUIDIZED CONDITIONS, RECOVERING EVOLVED HYDROCARBONACEOUS LTC VAPORS AND PARTICULATE FLUIDIZED LTC CHAR HAVING A BULK DENSITY LESS THAN 30 POUNDS PER CUBIC FOOT, RECOVERING LOW CARBON PITCH FROM SAID EVOLVED HYDROCARBONACEOUS LTC VAPORS, SUBSTANTIALLY HOMOGENEOUSLY INTERMIXING A BRIQUET FORMULATION COMPRISING 10 TO 35 PERCENT BY WEIGHT OF FINELY DIVIDED HIGH VOLATILE CAKING COAL, 80 TO 45 PERCENT BY WEIGHT OF SAID FLUIDIZED LTC CHAR, 6 TO 20 PERCENT BY WEIGHT OF PITCH INCLUDING AT LEAST 1 TO 12 PERCENT BY WEIGHT OF A HIGH CARBON PITCH AND UP TO 15 PERCENT BY WEIGHT OF SAID LOW CARBON PITCH, PRESSING A SHAPED BRIQUET FROM THE RESULTING MIXTURE AT A TEMPERATURE SLIGHTLY ABOVE THE MELTING POINT OF SAID PITCH, COKING THE SAID SHAPED BRIQUET BY FIRST SHOCK HEATING TO A TEMPERATURE ABOVE THE PLASTIC TEMPERATURE OF THE COAL, RETAINING THE BRIQUET AT A TEMPERATURE BELOW ABOUT 1250* F. UNTIL THE ENTIRE BRIQUET HAS ATTAINED A TEMPERATURE ABOVE THE PLASTIC TEMPERATURE OF THE COAL, THEREAFTER CONTINUING TO HEAT THE RESULTING COKED BRIQUET TO A CALCINING TEMPERATURE ABOVE 1550*F., RECOVERING EVOLVED HYDROCARBONACEOUS VAPORS FROM THE COKING AND CALCINING TREATMENTS, RECOVERING HIGH CARBON PITCH FROM SAID LAST-MENTIONED HYDROCARBONACEOUS VAPORS FOR USE AS THE HIGH CARBON PITCH COMPONENT IN SAID BRIQUET FORMULATION, AND RECOVERING A CALCINED COKED BRIQUET AS PRODUCT.

Claim 2

A METHOD FOR PREPARING FORMCOKE FROM HIGH VOLATILE CAKING COAL COMPRISING SUBJECTING A PORTION OF HIGH VOLATILE CAKING COAL TO LOW TEMPERATURE CARBONIZATION UNDER FLUIDIZED CONDITIONS, RECOVERING EVOLVED HYDROCARBONACEOUS LTC VAPORS AND PARTICULATE FLUIDIZED LTC CHAR HAVING A BULK DENSITY LESS THAN 30 POUNDS PER CUBIC FOOT, RECOVERING LOW CARBON PITCH FROM SAID EVOLVED HYDROCARBONACEOUS LTC VAPORS, SUBSTANTIALLY HOMOGENEOUSLY INTERMIXING A BRIQUET FORMULATION COMPRISING 10 TO 35 PERCENT BY WEIGHT OF FINELY DIVIDED HIGH VOLATILE CAKING COAL, 80 TO 45 PERCENT BY WEIGHT OF SAID FLUIDIZED LTC CHAR, 6 TO 20 PERCENT BY WEIGHT OF PITCH INCLUDING AT LEAST 1 TO 12 PERCENT BY WEIGHT OF A HIGH CARBON PITCH AND UP TO 15 PERCENT BY WEIGHT OF SAID LOW CARBON PITCH, PRESSING A SHAPED BRIQUET FROM THE RESULTING MIXTURE AT A TEMPERATURE SLIGHTLY ABOVE THE MELTING POINT OF SAID PITCH, COKING THE SAID SHAPED BRIQUET BY FIRST SHOCK HEATING TO A TEMPERATURE ABOVE THE PLASTIC TEMPERATURE OF THE COAL, RETAINING THE BRIQUET AT A TEMPERATURE BELOW ABOUT 1250* F. UNTIL THE ENTIRE BRIQUET HAS ATTAINED A TEMPERATURE ABOVE THE PLASTIC TEMPERATURE OF THE COAL, THEREAFTER CONTINUING TO HEAT THE RESULTING COKED BRIQUET TO A CALCINING TEMPERATURE ABOVE 1550*F., RECOVERING EVOLVED HYDROCARBONACEOUS VAPORS FROM THE COKING AND CALCINING TREATMENTS, RECOVERING HIGH CARBON PITCH FROM SAID LAST-MENTIONED HYDROCARBONACEOUS VAPORS FOR USE AS THE HIGH CARBON PITCH COMPONENT IN SAID BRIQUET FORMULATION, AND RECOVERING A CALCINED COKED BRIQUET AS PRODUCT.