Recovery method of unqualified powder from MOX preparation process
A technology of preparation process and recovery method, which is applied in the field of recovery of unqualified products in the process of nuclear fuel preparation, can solve the problems of single, powder accumulation and treatment methods, and achieve the effects of improving utilization rate, meeting control requirements, processing effect and reliability
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[0023] The present invention will be described in detail below in conjunction with specific embodiments.
[0024] The MOX preparation process unqualified powder recovery method of the present invention comprises the following steps:
[0025] Step 1: Calculate the required unqualified MOX powder with a filling rate of 15-35%, and feed cooling water at 10-40°C at a speed of 1-50L / min to avoid powder compaction, and use a speed of 1-5r / min Mix for 5-30 minutes.
[0026] Step 2: Sampling the mixed unqualified powder and analyzing the uranium and plutonium content, impurity content, particle size, specific surface area, bulk density, O / M and other items.
[0027] Step 3: For the unqualified powder with heavy metal impurities exceeding the standard, transfer to the water normal line for chemical dissolution recovery treatment;
[0028] Step 4: For powders with volatile impurity content or unqualified O / M, select the corresponding sintering boat according to the amount of material ...
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