SYNTHETIC CARBON GRAINS WITH HIGH MECHANICAL CHARACTERISTICS, PROCESS FOR THE PREPARATION, APPLICATION TO CARBON BLOCKS, ELECTRODES AND CARBONATES

摘要

THE INVENTION CONCERNS SYNTHETIC CARBON GRAINS WITH HIGH MECHANICAL CHARACTERISTICS AND, MORE PARTICULARLY, GRAINS MADE FROM ANTHRACITE FINES. THE INVENTION ALSO CONCERNS A PROCESS FOR THE PREPARATION OF THESE GRAINS. /P P THESE GRAINS ARE MADE BY AGGLOMERATION OF FINE IN THE FORM OF BALLS, SURFACE PRECOKING OF THESE BALLS BY AN OXIDIZING GAS, THE TEMPERATURE OF WHICH IS BETWEEN 650 AND 1000C, FOR A FEW MINUTES, FOLLOWED BY CALCINATION AT HIGH TEMPERATURE AND, FINALLY, BY CRUSHING TO OBTAIN THE DESIRED SIZE. /P P THE SYNTHETIC CARBON GRAINS FOLLOWING THE INVENTION ARE USED FOR ALL KINDS OF APPLICATION AND, IN PARTICULAR, THE MANUFACTURE OF CARBON PASTA OF ALL TYPES, ELECTRODES, AND CARBON BLOCKS FOR COATINGS OF OVEN OR ELECTROLYSIS CELLS.