Filtrate and waste gas processing
Abstract
Abstract AS SHOWN IN THE SINGLE FIGURE OF THE DRAWING NH3, CO2, AMMONIUM HYDROGEN FLUORIDE AND URANIUM ARE RECOVERED FROM NH4+, CO3= AND FLUORIDE CONTAINING WASTE WATER AS THE FILTRATE FROM THE PRECIPITATION OF TETRAAMMONIUM URANYL TRICARBONATE AND NH3 AND CO2 CONTAINING WASTE GASES FROM THE DECOMPOSITION OF TETRAAMMONIUM URANYL TRICARBONATE BY EMPLOYING A CIRCULATORY PROCESS HAVING A FIRST PHASE IN WHICH THE FILTRATE AND WASTE GASES ARE REACTED WITH A STRONGLY ACID SOLUTION OF AMMONIUM FLUORIDE AND AMMONIUM HYDROGEN FLUORIDE TO LIBERATE CARBON DIOXIDE AND BIND AMMONIA AND A SECOND PHASE WHEREIN THE RESULTING WEAKLY ACID CARBONATE FREE SOLUTION IS EVAPORATED TO SET FREE AMMONIA AND REGENERATE THE STRONGLY ACID SOLUTION AND A PART OF THE STREAM OF STRONGLY ACID SOLUTION IS WITHDRAWN FROM THE CIRCUIT TO MAINTAIN THE FLUORINE CONTENT OF THE CIRCUIT CONSTANT AND THE WITHDRAWN STREAM IS CONCENTRATED AND THE AMMONIUM HYDROGEN FLUORIDE SEPARATED FROM THE URANIUM MATERIAL BY VOLATILIZING THE AMMONIUM HYDROGEN FLUORIDE.
Inventors
- 👤 K Hackstein
- 👤 H Pirk
- 👤 H Muller
Bibliographic Details
Claims Analysis
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