Ammonium Hydroxide → diammonium diuranium heptaoxide

HRID 2164519Notes

Reaction equation

HRID 2164519 reaction equation
[U:1](F)(F)(F)(F)(F)F.[F-].[U+2:9](=O)=[O:10].[F-].[OH-:13].[NH4+:14]>O>[NH4+:14].[NH4+:14].[O-2:10].[O-2:13].[O-2:10].[O-2:10].[O-2:10].[O-2:10].[O-2:10].[U:1].[U:9]

Participants

5

Reactant 3

HCID 14923Ammonium HydroxideHCID 24560Uranium hexafluoride2×HCID 6432077Uranyl fluoride2×

Product 1

HCID 197096diammonium diuranium heptaoxide

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

Namely, solid uranium hexafluoride (UF6) is heated to vaporize, the UF6 gas is hydrolyzed with deionized water to uranyl fluoride (UO2F2) solution. The UO2F2 solution is added with ammonium hydroxide to form ammonium diuranate (ADU) precipitate. This slurry is filtered, then there is obtained a cake. The cake is washed, dried and milled. The obtained ADU powder is supplied to a calcining and reducing kiln to manufacture uranium dioxide powder. The uranium dioxide powder manufactured by this process has generally a particle size of about 0.1-3 μm and an example of the particle size distribution thereof is illustrated in FIG. 1.

Sources & evidence

ORD record
ord-d5ec2c6d615d4b5cb7d7d45ba43992f5
Source dataset
uspto-grants-1985_03
Patent number
US04505882

Reaction notes

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