THE HF-H$sub 2$-LEACH (HFRL) TREATMENT FOR RECOVERY OF URANIUM FROM RESIDUES. PART IV. PLANT SCALE DEVELOPMENT

Autor:	A.G. Blasewitz, G.H. Clewett
Rok vydání:	1947
Předmět:	chemistry.chemical_compound Hydrofluoric acid chemistry Nitric acid Scale development chemistry.chemical_element Leaching (metallurgy) Uranium Nuclear chemistry
DOI:	10.2172/4326721
Popis:	Pilot-plant studies of the HFRL process for the recovery of uranium from refractory residues were continued. The HFRL process consists of an initial and final hydrofluorination at 600 deg C for a total time of 4 hr, and an interim H/ sub 2/ reduction at 6OO deg C for 2 hr; the resulting residue is leached twice with a HNO/sub 3/--Al(NO/sub 3/)/sub 3/ solution and a third time with HNO/sub 3/ alone. Recovery values of 95 to 98% were obtained. (C.W.H.)
Databáze:	OpenAIRE
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