Thiocyanate extraction of beryllium
阅读：254发布：2021-07-08
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1. A CONTINUOUS PROCESS FOR THE SELECTIVE SEPARATION OF BERYLLIUM VALUES FROM AN AQUEOUS SOLUTION CONTAINING BERYLLIUM VALUES OBTAINED FROM A BERYLLIUM ORE CONTAINING ALUMINUM VALUES COMPRISING THE STEPS OF INTRODUCING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SOIDUM THIOCYANATE, POTASSIUM THIOCYANATE, AND AMMONIUM THIOCYANATE INTO SAID AQUEOUS SOLUTION TO FORM BERYLLIUM THIOCYANATE, ADJUSTING THE PH VALUE OF SAID SOLUTION TO A LEVEL OF SUBSTANTIALLY 2 TO 3, EXTRACTING SAID BERYLLIUM THIOCYANATE WITH AN ORGANIC SOLVENT CAPABLE OF SUBSTANTIAL SELECTIVVE EXTRACTION OF SAID BERYLLIUM THIOCYANATE AND SELECTED FROM THE CLASS CONSISTING OF KETONES, ALCOHOLS, ALDEHYDES AND ESTERS, TO THEREBY SELECTIVELY EXTRACT SAID BERYLLIUM THIOCYANATE AND OBTAIN AN ORGANIC PHASE RICH IN BERYLLIUM VALUES AND AN AQUEOUS PHASE CONTAINING SUBSTANTIALLY THE GREATER PORTION OF SAID ALUMINUM VALUES AND EXCESS THIOCYANATE, STRIPPING SAID ORGANIC PHASE OF SAID EXCESS STRIPPED ORGANIC PHASE, ADJUSTING THE PH OF SAID AQUEOUS PHASE BELOW 2.0 AND STRIPPING SAID EXCESS THIOCYANATE THEREFROM WITH AN ORGANIC SOLVENT CAPABLE OF EFFECTIVE EXTRACTION OF SAID EXCESS THIOCYANATTE, STRIPPING SAID LAST MENTIONED ORGANIC SOLVENT OF SAID EXCESS THIOCYANATE BY EXTRACTING SAME WITH AN ALKALINE SOLUTION CONTAINING AT LEAST ONE ION SELECTED FROM THE CLASS CONSISTING OF POTASSIUM, SODIUM AND AMMONIUM AND RECYCLING THE RECOVERED THIOCYANATE.
10. IN THE EXTRACTION BERYLLIUM VALUES FROM AN AQUEOUS SOLUTION CONTAINING BERYLLIUM VALUES AND ALUMINUM VALUES OBTAINED FROM A BERYLLIUM ORE CONTAINING ALUMINUM VALUES, THE STEPS OF INTRODUCING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SOLDIUM THIOCYANATE, POTASSIUM THIOCYANATE, AND AMMONIUM THIOCYANATE INTO SAID AQUEOUS SOLUTIONN TO FORM BERYLLIJM THIOCYANATE, ADJUSTING THE PH VALUE OF SAID SOLUTION TO A LEVEL OF SUBSTANTIALLY 2 TO 3, EXTRACTING SAID BERYLLIUM THUOCYANATE WITH AN ORGANIC SOLVENT CAPABLE OF SUBSTANTIAL SELECTIVE EXTRACTED OF SAID BERYLLIUM THIOCYANATE, SAID SOLVENT BEING SELECTED FROM THE CLASS CONSISTING OF KETONES, ALCOHOLS, ALDEHYDES AND ESTERS TO THEREBY SELECTIVELY EXTRACT SAID BERYLLIUM THIOCYANATE AND OBTAIN AN ORGANIC PHASE RICH IN BERYLLIUM VALUES AND AN AQUEOUS PHASE CONTAINING SUBSTANTIALLY THE GREATER PORTION OF SAID ALUMINUM VALUES, STRIPPING SAID ORGANIC PHASE OF SAID BERYLLIUM VALUES AND RECOVERING SAME.
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