Method for producing triuranium octoxide by calcining ammonium uranyl tricarbonate with microwaves
A technology of uranyl ammonium tricarbonate and uranium octaoxide, which is applied in the direction of uranium oxide/hydroxide, can solve the problems of increased nuclear radiation threat probability, poor product uniformity, difficult processing and other problems, and achieves broad industrial application prospects , Short production cycle, uniform product composition and particle size
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Embodiment 1
[0021] Embodiment 1: the ammonium uranyl tricarbonate that 15g particle diameter is 80-120 μ m is packed into an alumina crucible and placed in a microwave reactor, and the microwave output power is adjusted to 5-15kW. The temperature was raised to 400°C at a rate of °C / min, and kept at this temperature for 25 minutes, the microwave heating switch was turned off, and the product was naturally cooled to room temperature to obtain the U3O8 product. After analysis and testing, the content of ∑U in U3O8 products is 84.55%, U 4+ The content is 27.91%.
Embodiment 2
[0022] Example 2: Put 10 g of ammonium uranyl tricarbonate with a particle size of 40-80 μm into an alumina crucible and place it in a microwave reactor, adjust the microwave output power to 20-35kW, and transfer the material from room temperature at a rate of 30°C / min The temperature was raised to 600°C, and kept at this temperature for 15 minutes; the microwave heating switch was turned off, and naturally cooled to room temperature to obtain U3O8 product. After analysis and testing, the content of ∑U in U3O8 products is 84.72%, U 4+ The content is 28.11%.
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