METHOD OF PRODUCING URANIUM OXIDE WITH REQUIRED CONTENT OF U ISOTOPE Russian patent published in 2011 - IPC C01G43/01 

FIELD: chemistry.

SUBSTANCE: invention can be used in production of nuclear fuel with the required content of the ²³⁵U isotope. Uranium-containing materials with different content of the ²³⁵U isotope are mixed in a ratio defined by the equation: where m_n is mass of the n-th (unknown) material, g; m_i is mass of the i-th material, g; C_n is content of uranium in the n-th material, %; C_i is content of uranium in the i-th material, %; R_n if content of the ²³⁵U isotope in the mass of uranium of the n-th material, %; R_i is content of the ²³⁵U isotope in the mass of uranium in the i-th material, %; R_given is the required (given) content of the ²³⁵U isotope in the obtained uranium oxide, %. The obtained uranium-containing material is dissolved in nitric acid and uranium undergoes peroxide precipitation. The precipitate is calcined in air to uranium oxide.

EFFECT: invention simplifies the process of obtaining uranium oxide and increases output.

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