Title: Comparative study on the properties of UO₂ produced by direct reduction of ADU and reduction of calcined product of ADU

Authors: Subhankar Manna; Raj Kumar; K.N. Hareendran; S.K. Satpati; M.L. Sahu

Addresses: Uranium Extraction Division, Bhabha Atomic Research Centre, Mumbai 400085, India ' Uranium Extraction Division, Bhabha Atomic Research Centre, Mumbai 400085, India ' Uranium Extraction Division, Bhabha Atomic Research Centre, Mumbai 400085, India ' Uranium Extraction Division, Bhabha Atomic Research Centre, Mumbai 400085, India ' Uranium Extraction Division, Bhabha Atomic Research Centre, Mumbai 400085, India

Abstract: The characteristics of UO₂ powder are crucial for production of both UO₂ based fuel and uranium based metallic and alloy fuel. Depending upon the usage as UO₂ based fuel or as metallic uranium based fuel, the desired quality parameters of UO₂ are different. The UO₂ powder was produced by two different methods: (1) by the reduction of the thermal decomposed product of ammonium diuranate and (2) by the direct reduction of ammonium diuranate. Oxygen to uranium ratio (O/U), specific surface area (SSA) and crystal structure of UO₂ powder produced by these two methods were studied.

Keywords: ammonium diuranate; uranium dioxide; O/U ratio; SSA; crystal structure.

DOI: 10.1504/IJNEST.2020.112164

International Journal of Nuclear Energy Science and Technology, 2020 Vol.14 No.2, pp.181 - 190

Received: 19 Sep 2019
Accepted: 08 Sep 2020
Published online: 04 Jan 2021 *

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