Nuclear power plant

Zircaloy, an advanced zirconium-based alloy, plays a vital role in global nuclear energy production. Comprising mainly zirconium with minor additions of tin, iron, chromium, and nickel, Zircaloy exists in several grades, including the widely used Zircaloy-2 and Zircaloy-4. These variants offer exceptional corrosion resistance and mechanical strength under extreme conditions.


Why Zircaloy Matters in Nuclear Reactors

Zircaloy is the primary material used for nuclear fuel cladding in pressurized water reactors (PWRs) and boiling water reactors (BWRs). Its low neutron absorption rate makes it ideal for nuclear fission, as it allows more neutrons to sustain the chain reaction. At the same time, it shields uranium dioxide (UO₂) fuel pellets from high-pressure, high-temperature environments.

Zirconium’s ability to resist corrosion in hot water and steam enhances cladding performance. It slows oxidation and hydrogenation, which helps extend fuel rod lifespan and ensures stable reactor operations. The alloy’s key strengths include:

- Corrosion resistance at 300–400°C

- Low neutron capture

- Mechanical durability

- Radiation tolerance

To meet rising demands, advanced zirconium alloys such as ZIRLO, M5, E110, and OPTZIR have emerged. These next-generation materials boost structural integrity and reduce radioactive waste by supporting longer fuel cycles.


Recycling Zircaloy: A Strategic Imperative

Most countries, including South Korea, depend heavily on imported zirconium. This reliance makes the recycling of zirconium alloys a crucial strategy for material security and energy independence. Zircaloy scrap, especially from non-radioactive zones during nuclear fuel assembly disassembly, offers a valuable secondary resource.

Dong-A Special Metals possesses proprietary recycling technologies that refine and re-alloy zirconium waste into high-purity materials. These recycled alloys are suitable for reuse without further processing. This circular approach supports:

- Reduced dependence on raw imports

- Lower carbon emissions during production

- Environmental protection from reduced mining activities

While irradiated cladding from spent fuel must be treated as high-level waste, industrial scrap and machine cuttings outside of radiation zones can be safely and efficiently recycled.


The Future of Zirconium in Advanced Nuclear Systems

The development of small modular reactors (SMRs) and nuclear hydrogen production systems will further increase global demand for zirconium alloys. As these new nuclear technologies gain traction, material security through domestic recycling will become a core component of national energy policy.

Dong-A Special Metals continues to lead in rare metal recycling. Our refined products meet the quality standards needed for advanced nuclear applications, contributing to a more sustainable and secure energy future.




#Zircaloy #ZirconiumAlloy #NuclearEnergy #ZircaloyRecycling #DongASpecialMetals #ZirconiumScrap #AdvancedReactors #SMRs #CriticalMaterials #CleanEnergy

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2) Kor : https://blog.naver.com/dongaspecial/223683546036

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Ltd. is selling titanium (titanium) sponge substitutes for research and alloying on its smart store in order to localize the material in Korea. We look forward to your interest and support. Thank you.


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