Process for the manufacture of refractory materials and resultant product

Claim 1

PROCESS FOR MAKING REFRACTORY HEAT INSULATING PRODUCT CONSISTING SUBSTANTIALLY OF CARBON COMPRISING THE STEPS OF: INTIMATELY MIXING, AT A TEMPERATURE OF ABOUT 100*C., PARTICLES OF A POROUS SOLID SUBSTANCE CONSISTING SUBSTANTIALLY OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF OSES, HOLOSIDES, HETEROSIDES, AND POLOYSIDES, WITH A LIQUID BINDER CAPABLE OF FORMING A GEL CONSISTING SUBSTANTIALLY OF AN AQUEOUS SUSPENSION OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF OSES, HOLOSIDES, HETEROSIDES, POLYOSIDES, GELATINE, AND GLUES, TO FORM A PASTY MIXTURE AT THE MIXING TEMPERATURE OF A POROUS SOLID SKELETON THOROUGHLY IMPREGNATED WITH THE GEL-FORMING BINDER; PLACING THIS PASTY MIXTURE INTO MOLDS CORRESPONDING TO THE SHAPE OF THE DESIRED REFRACTORY PRODUCT; SUBMITTING THIS PASTE TO A SLIGHT PRESSURE OF ABOUT 100-200 GRAMS/CM.2 TO THEREBY INSURE THE UNIFORM FILLING OF THE ENTIRE MOLD WITHOUT SUBSTANTIALLY INCREASING THE BULK DENSITY OF THE MASS; HEATING THE MIXTURE PROGRESSIVELY IN A NON-OXIDIZING ATMOSPHERE UP TO A TEMPERATURE OF ABOUT 1200*C. WHEREBY THE PASTY MIXTURE IS COKED AND TRANSFORMED INTO CARBON.