Process for separating ai-values from ores

Claim 1

THE PROCESS OF SEPARATING ALUMINA FROM BAUXITE ORE WHICH COMPRISES INTRODUCING THE ORE IN LUMP FORM INTO HOT CAUSTIC LIQUOR IN AN UPRIGHT TOWER, INTRODUCING A JET OF HOT CAUSTIC LIQUOR AT A TEMPERATURE NEAR ITS BOILING POINT AT THE EXISTING PRESSURE INTO A CLASSIFIER NEAR THE UPPER PART OF THE TOWER WHICH JET AGITATES THE LUMPS AND REDUCES THEIR SIZE BY DISSOLVING THE ALUMINA, THUS CAUSING REMOVAL FROM THE CLSSIFIER OF RELATIVELY SMALLER SIZE LUMPS INTO THE CAUSTIC LIQUOR IN THE TOWER, SETTLING THE ORE LUMPS OF REDUCED SIZE IN CAUSTIC LIQUOR OF PROGRESSIVELY INCREASING TEMPERATURE TOWARDS THE LOWER PART OF THE TOWER, SAID ORE LUMPS OF REDUCED SIZE ENTERING A LOWER CLASSIFIER NEAR THE LOWER PART OF THE TOWER, AND INTRODUCING ANOTHER JET OF CAUSTIC LIQUOR AT A TEMPERATURE OF FROM 300* TO 400* F. INTO THE LOWER PART OF THE LOWER CLASSIFIER TO EFFECT FURTHER AGITATION OF THE LUMPS AND SOLUTION OF THE ALUMINA, THE CAUSTIC LIQUOR IN THE TOWER BEING NEAR ITS BOILING POINT AT THE EXISTING PRESSURE AND BEING PREVENTED FROM BOILING BY THE STATIC HEAD OF LIQUOR IN THE TOWER, REMOVING FROM THE LOWER CLASSIFIER AND TOWER UNDISSOLVED PORTIONS OF THE ORE AND SEPARATING FROM THE LOWER PART OF THE TOWER A SOLUTION OF ALUMINA IN THE CAUSTIC LIQUOR.