Method for ball milling of MOX mixed powder
A technology of mixing powder and processing method, applied in the field of nuclear-grade metal oxide powder preparation, can solve the problem of uneven mixing of MOX powder, and achieve the effects of satisfying process stability and qualification rate, high reliability, and uniform microstructure distribution.
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Embodiment 1
[0031] A ball milling treatment method for MOX mixed powder, the particle size of the MOX mixed powder is 8.5 μm, and the specific surface area is 7.2m 2 / g, including the following steps:
[0032] (1) Add 0.97kg of MOX mixed powder into the ball milling tank, and add grinding balls according to the ratio of ball to material ratio of 1:1, the filling rate of the ball milling tank is 47%;
[0033] (2) ball milling with a rotating speed of 870rpm for 10 minutes;
[0034] (3) After standing for 3 minutes, open the ball mill tank, scrape off the powder on the inner wall of the tank with a spatula, stir up the bottom material with a stirring tool, and slowly stir the material to make it evenly mixed;
[0035] (4) Step (2) and step (3) are repeated, wherein the ball milling speed is controlled to be 450rpm;
[0036] (5) After 20 cycles of treatment, the ball milling is over, and the particle size of the powder after ball milling is 1.2 μm, and the specific surface area is 14.8 m ...
Embodiment 2
[0038] A ball milling treatment method for MOX mixed powder, the particle size of the MOX mixed powder is 6.9 μm, and the specific surface area is 9.8m 2 / g, including the following steps:
[0039] (1) Add 0.84kg of MOX mixed powder into the ball milling tank, and add grinding balls according to the ratio of ball to material ratio of 1:1, the filling rate of the ball milling tank is 42%;
[0040] (2) ball milling with a rotating speed of 900rpm for 10 minutes;
[0041] (3) After standing for 3 minutes, open the ball mill tank, scrape off the powder on the inner wall of the tank, stir up the bottom material with a stirring tool, and slowly stir the material to make it evenly mixed;
[0042] (4) Step (2) and step (3) are repeated, wherein the ball milling speed is controlled to be 450rpm;
[0043] (5) After 20 cycles of treatment, the ball milling is over, and the particle size of the powder after ball milling is 2.4 μm, and the specific surface area is 12.8 m 2 / g, in line w...
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