Process of extending the duration of service of ingot molds

Claim 1

A PROCESS OF EXTENDING THE LIFE OF SERVICE OF INGOT MOLDS FOR CAST IRON IN A METAL PRODUCING METHOD, COMPRISING THE STEPS OF APPLYING TO THE RED-HOT INNER WALL OF AN INGOT MOLD AN AQUEOUS SUSPENSION OF A MIXTURE CONSISTING ESSENCONSTITUENT SELECTED FROM THE GROUP CONSISTING OF WOOD CHARCOAL, BONE CHARCOAL, COAL, LIGNITE, COKE, RESIN, WOOD SAWDUST, GRAPHITE, AND RESIDUES FROM THE DISTILLATION OF COAL AND PETROLEUM, ABOUT 5 TO 10 PARTS OF AN AUXILIARY CONSTITUENT AS ADHESIVES SELECTED FROM THE GROUP CONSISTING OF SODIUM SILICATE, SOLUBLE DERIVATIVES OF CELLULOSE, SOLUBLE SALTS OF LIGNOSULPHONIC ACID, SUGARS AND AMYLACEOUS PRODUCTS, ABOUT 1 TO 10 PARTS OF CATALYSTS AND STABILIZERS, RESPECTIVELY, SELECTED FROM THE GROUP CONSISTING OF ALKALINE CARBONATES, ALKALINE-EARTH CARBONATES, CHLORIDES, SODIUM NITRATE, SODIUM SULPHATE AND POTASSIUM FERROCYANIDE, AND ABOUT 1 TO 10 PARTS OF PRODUCTS GENERATING EXOTHERMIC REACTIONS SELECTED FROM THE GROUP CONSISTING OF POWDERED ALUMINUM AND POWDERED MAGNESIUM.