Choosing a Zirconia Crucible

Crucibles are essential laboratory tools used for conducting various scientific tasks. Withstanding high temperatures and chemicals, crucibles make an ideal melting solution, chemical calcination, ceramic sample preparation and chemical calcination processes.

Zirconia crucible are made from dense ceramic materials that are both corrosion-resistant and temperature resistant, reaching temperatures of 1900degC for use. Their corrosion-resistance makes them suitable for melting super alloys and precious metals.

High-temperature refractory

Selecting an ideal crucible for melting, evaporation and other high-temperature processes can be challenging. Many factors must be taken into account, including volume required, shape of crucible and any chemical reactions which might take place between it and chemicals being melted or vaporized.

Zirconia crucibles are made of dense refractory ceramic material and provide superior thermal shock resistance and chemical inertness, with temperatures reaching 1900degC of resistance against melting precious metals and super alloys. Furthermore, these crucibles are resistant to acids and alkalis for reduced contamination risk.

we provide an impressive range of refractory crucibles designed for use in rigorous laboratory and industrial processes, available in a range of sizes and shapes to meet specific applications. Constructed from high-grade alumina, zirconia and nickel materials able to withstand extremely high temperatures as well as corrosion-prone environments, they’re the ideal solution for melting metals, sintering advanced ceramics or producing optical glass under controlled conditions.

Refinement of rare earth elements

Rare earth refining processes require using a specific crucible made from zirconia material that can withstand high temperatures and chemical reactions while maintaining its shape and integrity. Zirconia crucibles meet this criteria well, coming in various sizes and shapes for use during refining processes.

Zirconia crucibles offer superior chemical inertness and thermal shock resistance at higher temperatures, making them suitable for melting, evaporation and other high-temperature processes. Furthermore, their design makes them suitable for compatibility with various materials as well as use across a wide variety of processes such as welding.

Australia is poised to become a leader in the refining of rare earth elements. Through Lynas and Eneabba projects, Australia is building domestic rare-earths processing capacity that will lessen China’s dependence for these critical components. However, building this capacity may take decades; rare-earth refining requires expensive chemicals including strong acids like hydrofluoric acid.

Melting of precious metals

Wohlwill’s process involves using a porous ceramic container to capture gold and silver vapors, then mixing them with water and metallic oxide fumes to form a foam that separates precious metals from their slags before being drained and filtered to remove any remaining impurities.

Zirconia crucibles are popularly chosen for melting and evaporation processes because they can withstand high temperatures without cracking or breaking, while their low thermal expansion properties allow them to maintain their physical dimensions even after repeated temperature shifts.

These refractory containers are typically constructed from calcium-stabilized or yttria-stabilized zirconia and designed to withstand high temperatures while remaining resistant to acidic, alkaline and silicate melts and slags as well as thermal shock. Crucibles made from these materials are perfect for melting rare and precious metals like platinum while they can also be utilized in metallurgy as well as other industries where heat is key.

Laboratory tool

Zirconium crucibles with rims are an ideal choice when performing laboratory work that requires high temperatures, as they do not react with chemicals and can be safely managed by human hands due to their unique rim design. They’re great tools for industries such as rare metals, aerospace and medicine which require reliable tools.

Zirconia crucible with rims offer greater corrosion-resistance than their steel counterparts, thanks to a tightly attached oxide layer which protects their material from acids attacking it directly and serving as an ideal replacement for conventional graphite or clay-graphite crucibles.

Zirconia crucibles offer another advantage by being designed to withstand thermal shock, meaning they can be rapidly heated and cooled without suffering damage, making it the go-to option for fusion processes that require precision and specific chemistry. Plus, zirconia labware is considerably cheaper.