B - Operations – Transporting – 22 – F
Patent
B - Operations, Transporting
22
F
75/155, 23/224,
B22F 9/00 (2006.01) B22F 5/00 (2006.01) B22F 9/22 (2006.01) C22C 1/10 (2006.01) G21F 9/14 (2006.01) G21F 9/30 (2006.01)
Patent
CA 1085657
ABSTRACT OF THE DISCLOSURE Metal powders, metal oxide powders, and mixtures thereof of controlled particle size are provided by reacting an aqueous solution containing dissolved metal values with excess urea. Upon heating, urea reacts with water from the solution leaving a molten urea solution containing the metal values. The molten urea solution is heated to above about 180°C whereupon metal values precipitate homogeneously as a powder. The powder is reduced to metal or calcined to form oxide particles. One or more metal oxides in a mixture can be selectively reduced to produce metal particles or a mixture of metal and metal oxide particles.
297763
Meredith & Finlayson
The Government Of The United States As Represented By The United
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