Method of making ferromagnetic barium ferrites

Claim 1

THE METHOD OF MAKING FERROMAGNETIC BARIUM FERRITE OF HIGH STRUCTURAL AND COMPOSITIONAL PURITY AND HAVING A PARTICLE SIZE BELOW 0.1 MICRON COMPRISING; DISSOLVING ANHYDROUS FERRIC CHLORIDFE IN AN ORGANIC SOLVENT SOLUTION OF AN ALCOHOL THE ALCOHOL RADICAL OF WHICH CONTAINS NOT OVER 5 CARBON ATOMS AND A CYCLIC HYDROCARBON AT ROOM TEMPERATURE UNDER ANHYDROUS CONDITIONS, STIRRING THE MIXTURE UNDER ANHYDROUS CONDITIONS FOR SEVERAL HOURS TO DISSOLVE MOST OF THE FERRIC CHLORIDE, TREATING THE SOLUTION WITH ANHYDROUS AMMONIA GAS AT ROOM TEMPERATURE FOR SEVERAL HOURS TO PRECIPITATE ALL THE CHLORIDES AS AMMONIUM CHLORIDE, ALLOWING THE TREATED SOLUTION TO STAND FOR SEVERAL HOURS UNTIL THE PRECIPITATE IS SETTLED, DRAWING OFF THE SUPERNATANT LIQUID AND FILTERING IT IN VACUUM UNDER ANHYDROUS CONDITIONS, CONCENTRATING THE FILTERED SOLUTION BY HEATING UNDER ATMOSPHERIC PRESSURE TO ABOUT THE BOILING POINT OF THE CYCLIC HYDROCARBON TO REMOVE EXCESS AMOUNT OF THE SOLVENTS, MIXING THE FERRIC ALCOHOLATE THUS OBTAINED IN STOICHIOMETRIC PROPORTIONS AND IN AN ORGANIC SOLVENT WITH BARIUM ALCOHOLATE THE ALCOHOL RADICAL OF WHICH CONTAINS NOT OVER 5 CARBON ATOMS, HEATING THE SOLUTION TO DRYNESS TO OBTAIN A MIXTURE OF BARIUM OXIDE AND FERRIC OXILDE IN THE RATIO OF 1 MOL OF BARIM TO 123 MOL OF IRON AND FIRING THIS MIXTURE AT TEMPERATURE OF BETWEEN 960 AND 1260*C. TO OBTAIN FERROMAGNETIC BARIUM FERRITE.

Claim 2

THE METHOD OF MAKING FERROMAGNETIC BARIUM FERRITE OF HIGH STRUCTURAL AND COMPOSITIONAL PURITY AND HAVING A PARTICLE SIZE BELOW 0.1 MICRON COMPRISING; DISSOLVING ANHYDROUS FERRIC CHLORIDFE IN AN ORGANIC SOLVENT SOLUTION OF AN ALCOHOL THE ALCOHOL RADICAL OF WHICH CONTAINS NOT OVER 5 CARBON ATOMS AND A CYCLIC HYDROCARBON AT ROOM TEMPERATURE UNDER ANHYDROUS CONDITIONS, STIRRING THE MIXTURE UNDER ANHYDROUS CONDITIONS FOR SEVERAL HOURS TO DISSOLVE MOST OF THE FERRIC CHLORIDE, TREATING THE SOLUTION WITH ANHYDROUS AMMONIA GAS AT ROOM TEMPERATURE FOR SEVERAL HOURS TO PRECIPITATE ALL THE CHLORIDES AS AMMONIUM CHLORIDE, ALLOWING THE TREATED SOLUTION TO STAND FOR SEVERAL HOURS UNTIL THE PRECIPITATE IS SETTLED, DRAWING OFF THE SUPERNATANT LIQUID AND FILTERING IT IN VACUUM UNDER ANHYDROUS CONDITIONS, CONCENTRATING THE FILTERED SOLUTION BY HEATING UNDER ATMOSPHERIC PRESSURE TO ABOUT THE BOILING POINT OF THE CYCLIC HYDROCARBON TO REMOVE EXCESS AMOUNT OF THE SOLVENTS, MIXING THE FERRIC ALCOHOLATE THUS OBTAINED IN STOICHIOMETRIC PROPORTIONS AND IN AN ORGANIC SOLVENT WITH BARIUM ALCOHOLATE THE ALCOHOL RADICAL OF WHICH CONTAINS NOT OVER 5 CARBON ATOMS, HEATING THE SOLUTION TO DRYNESS TO OBTAIN A MIXTURE OF BARIUM OXIDE AND FERRIC OXILDE IN THE RATIO OF 1 MOL OF BARIM TO 123 MOL OF IRON AND FIRING THIS MIXTURE AT TEMPERATURE OF BETWEEN 960 AND 1260*C. TO OBTAIN FERROMAGNETIC BARIUM FERRITE.