Processes for producing carbonaceous materials from high oxygen coals

Claim 1

A PROCESS OF PRODUCING CARBONACEOUS MATERIAL FROM COAL HAVING AN OXYGEN CONTENT ON A MOISTURE AND ASHFREE BASIS OF AT LEAST 15% BY WEIGHT WHICH COMPRISES, HEATING PARTICLES OF SAID COAL TO A TEMPERATURE WITHIN THE RANGE OF 250*F. TO 500*F. IN AN ATMOSPHERE FREE OF OXYGEN DERIVED FROM A SOURCE EXTRANEOUS TO THE COAL FOR FROM 5 MINUTES TO 3 HOURS TO PRODUCE CATALYZED COAL PARTICLES CONDITIONED SO THAT IN THE NEXT HEATING STAGE THE AMOUNT OF HYDROCARBONACEOUS MATTER IN THE COAL PARTICLES IS REDUCED; HEATING THE CATALYZED COAL PARTICLES TO A STILL HIGHER TEMPERATURE BUT NOT EXCEEDING 1200*F. AND MAINTAINING THEM AT SAID HIGHER TEMPERATURE FOR FROM 10 TO 60 MINUTES TO EVOLVE VAPORS AND PRODUCE CHAR WHICH HAS THE ESSENTIAL STRUCTURE AND DENSITY OF THE PARENT COAL, BUT HAS A MARKEDLY LOWER VOLATILE COMBUSTIBLE MATERIAL CONTENT THAN THE PARENT COAL; AND HEATING THE CHAR TO A STILL HIGHER TEMPERATURE WITHIN THE RANGE OF FROM 1400*F. TO 1800*F. AND MAINTAINING THE HEATED CHAR AT SAID HIGHER TEMPERATURE FOR A TIME INTERVAL TO PRODUCE CALCINATE.