C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/179
C22B 3/00 (2006.01) C01F 13/00 (2006.01) C22B 60/00 (2006.01)
Patent
CA 1219131
PROCESS FOR THE REMOVAL OF RADIUM FROM ACIDIC SOLUTIONS CONTAINING SAME Abstract of the Disclosure The invention is a process for the removal of radium from acidic aqueous solutions. In one aspect, the invention is a process for removing radium from an inorganic-acid solution. The process comprises con- tacting the solution with coal fly ash to effect absorption of the radium on the ash. The raduim- containing ash then is separated from the solution. The process is simple, comparatively inexpensive, and efficient. High radium-distribution coefficients are obtained even at room temperature. Coal fly ash is an inexpensive, acid-resistant, high-surface-area material which is available in large quantities throughout the United States. the invention is applicable, for example, to the recovery of 226Ra from nitric acid solutions which have been used to leach radium from uranium-mill tailings.
444615
Meredith & Finlayson
United States Of America (government Of The) United States Depar
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