斯德哥尔摩国际和平研究所-Phosphate-fertilizers-as-a-proliferation_14页_513kb

Summary of "PHOSPHATE FERTILIZERS AS A PROLIFERATION-RELEVANT SOURCE OF URANIUM"

Core Content

Uranium is a critical material for nuclear weapons and nuclear power, and its extraction from phosphate fertilizers represents a historically overlooked and proliferation-relevant source. While uranium is not as valuable as rare materials like gold, it is abundant and has dual-use applications in both peaceful and military contexts. This dual-use nature, combined with the potential for uranium to be diverted for clandestine nuclear weapon programs, necessitates robust international safeguards and export controls.

Main Points

• Uranium's Role: Uranium is essential for nuclear weapons, reactors, and other applications. It can be used directly in reactors or enriched to create fissile material for weapons.
• Uranium in Fertilizers: Phosphate rock, a key component in fertilizer production, contains trace amounts of uranium. This uranium can be extracted during the processing of phosphoric acid, which is used to make fertilizers.
• Clandestine Use: The extraction of uranium from phosphate fertilizers has been used in undeclared nuclear programs. For example, Iraq produced 109 tonnes of uranium from phosphate rock during the 1980s, using European technology, without IAEA awareness.
• Non-Proliferation Risks: The process is not economically viable at current uranium prices but can be carried out clandestinely. It is difficult to monitor and control, especially when uranium is extracted from unconventional sources.
• IAEA Safeguards: The IAEA has specific procedures for safeguarding nuclear materials. However, these procedures do not apply to uranium in the early stages of processing (pre-34(c) materials), which makes it a potential loophole for proliferation.
• Additional Protocol (AP): The AP provides the IAEA with more authority to monitor uranium production and use, especially for pre-34(c) materials. As of October 2016, 129 states and the EU had ratified the AP.
• Military Applications: Uranium from phosphate rock has been used in military applications, including nuclear weapons and naval propulsion. Some countries, like Israel and the US, have used this source for their nuclear programs.

Key Information

• Phosphate Rock as a Source: Phosphate rock is a significant unconventional uranium resource. It is estimated that global recoverable uranium from phosphate rock ranges from 9 to 22 million tonnes.
• Iraq Case Study: Iraq's Al Qaim Superphosphate Fertilizer Plant, which used European technology, was a major source of uranium for its clandestine nuclear program. The plant produced 109 tonnes of uranium in 168 tonnes of yellowcake.
• Israel's Program: Israel is believed to have used indigenous phosphate deposits for its nuclear program. Uranium from these deposits is used in the Dimona reactor and nuclear weapon components. The country has not signed the NPT, raising concerns about transparency.
• Technological Process: The Prayon process and mixer-settler process are commonly used to extract uranium from phosphoric acid. These processes are legal but can be misused for military purposes.
• Export Control Importance: The authors emphasize the need for better export controls and end-user monitoring, especially for countries not bound by the NPT, to prevent the misuse of uranium extraction technologies.
• Economic Factors: Although uranium extraction from phosphates is not currently cost-effective, it may become more attractive if uranium prices rise or if conventional mining becomes less viable.

Conclusion

The extraction of uranium from phosphate fertilizers is a dual-use process that can be exploited for nuclear proliferation. Despite its low economic viability, the potential for clandestine use and the lack of effective safeguards make it a concern for non-proliferation efforts. The case of Iraq highlights the risks of supplying such technology without proper oversight, and the authors call for enhanced export controls and transparency in the uranium industry.