Method for preparing beta-alumina trihydrate

Claim 1

THE METHOD OF PREPARING BETA-ALUMINA TRIHYDRATE WITHOUT AN AGING STEP WHICH COMPRISES SLOWLY ADDING IN INCREMENTS A DILUTE ACIDIC AQUEOUS SOLUTION OF AN ALUMINNUM SALT SELECTED FROM THE GROUP CONSISTING OF ALUMINUM CHLORIDE AND ALUMINUM NITRATE SUBSTANTIALLY FREE OF METALS OTHER THAN ALUMINUM WITH THOROUGH MIXING TO A SUBSTANTIALLY SODIUM FREE 0.1 TO 4 MOLAR AQUEOUS HIGHLY BASIC SOLUTION OF AN HYDROXIDE COMPOUND HAVING A NON-METALLIC VOLATILE CATION, THE SLOW RATE OF ADDITION OF INCREMENTS OF SAID ACIDIC SOLUTION TO SAID BASIC SOLUTION TENDING TO ONLY SLOWLY DECREASE THE PH OF SAID BASIC SOLUTION FROM ITS HIGHLY BASIS VALUE TO A LOWER VALUE, THE LOWEST PH IN THE MIXTURE OF ACIDIC SOLUTION AND BASIC SOLUTION DURING THE ENTIRE OPERATION BEING NO LESS THAN 9, MAINTAINING THE TEMPERATURE OF THE MIXED SOLUTION ABOVE FREEZING BUT BELOW 120* F. DURING THE ENTIRE OPERATION, AND RECOVERING AN IMMEDIATE CRYSTALLINE PRECIPITATE WHICH COMPRISES AT LEAT 95 PERCENT BAYERITE.

Claim 2

THE METHOD OF PREPARING BETA-ALUMINA TRIHYDRATE WITHOUT AN AGING STEP WHICH COMPRISES SLOWLY ADDING IN INCREMENTS A DILUTE ACIDIC AQUEOUS SOLUTION OF AN ALUMINNUM SALT SELECTED FROM THE GROUP CONSISTING OF ALUMINUM CHLORIDE AND ALUMINUM NITRATE SUBSTANTIALLY FREE OF METALS OTHER THAN ALUMINUM WITH THOROUGH MIXING TO A SUBSTANTIALLY SODIUM FREE 0.1 TO 4 MOLAR AQUEOUS HIGHLY BASIC SOLUTION OF AN HYDROXIDE COMPOUND HAVING A NON-METALLIC VOLATILE CATION, THE SLOW RATE OF ADDITION OF INCREMENTS OF SAID ACIDIC SOLUTION TO SAID BASIC SOLUTION TENDING TO ONLY SLOWLY DECREASE THE PH OF SAID BASIC SOLUTION FROM ITS HIGHLY BASIS VALUE TO A LOWER VALUE, THE LOWEST PH IN THE MIXTURE OF ACIDIC SOLUTION AND BASIC SOLUTION DURING THE ENTIRE OPERATION BEING NO LESS THAN 9, MAINTAINING THE TEMPERATURE OF THE MIXED SOLUTION ABOVE FREEZING BUT BELOW 120* F. DURING THE ENTIRE OPERATION, AND RECOVERING AN IMMEDIATE CRYSTALLINE PRECIPITATE WHICH COMPRISES AT LEAT 95 PERCENT BAYERITE.