Overview of Cylindrical / Flat Bottom / Curved 5ml – 2000ml Alumina Al2o3 Ceramic Porcelain Crucible for Melting Gold

Cylindrical / Flat Bottom / Curved 5ml – 2000ml Alumina Al2o3 Ceramic Porcelain Crucible for Melting Gold is high-performance ceramic containers made from 99%+ pure aluminum oxide (Al₂O₃). Designed for extreme thermal and chemical environments, they withstand temperatures up to 1800°C, making them ideal for laboratory, industrial, and research applications such as metal melting, sintering, and chemical analysis.

Key Features of Cylindrical / Flat Bottom / Curved 5ml – 2000ml Alumina Al2o3 Ceramic Porcelain Crucible for Melting Gold

High-Temperature Resistance – Stable up to 1800°C with minimal thermal expansion.

Superior Thermal Shock Resistance – Resists cracking under rapid temperature changes.

Chemical Inertness – Unaffected by acids, alkalis, and molten metals.

High Mechanical Strength – Durable and long-lasting under harsh conditions.

Customizable Sizes & Shapes – Available in standard and tailored designs.

(Cylindrical / Flat Bottom / Curved 5ml – 2000ml Alumina Al2o3 Ceramic Porcelain Crucible for Melting Gold)

Specification of Cylindrical / Flat Bottom / Curved 5ml – 2000ml Alumina Al2o3 Ceramic Porcelain Crucible for Melting Gold

These crucibles are made from pure alumina ceramic. Alumina ceramic is Al2O3. This product is exceptionally strong. It takes care of extreme temperatures effectively. You require that for melting gold. Gold thaws at high heat. These crucibles will not crack or warp easily. They stand up to thermal shock. Abrupt temperature adjustments won’t break them. This makes them trustworthy and safe.

You obtain different shapes. Select cylindrical, level base, or bent. Each shape fits different melting setups. Level lower crucibles rest secure on surfaces. Curved ones are good for putting. Round shapes supply great deals of space. Choose the form that functions ideal for your heating system or torch.

Dimensions range from little 5ml up to big 2000ml. Little ones are ideal for examining little gold examples. Large ones handle larger sets. This covers most demands. The alumina material is very pure. It won’t include impurities to your molten gold. Your gold remains tidy. That’s important for top quality results.

These crucibles endure warm up to 1700 ° C (regarding 3100 ° F). That’s much above gold’s melting factor. They won’t respond with the molten steel. They last many uses. This gives you great value. Handle them thoroughly when warm. Use appropriate tongs. They are fragile like porcelain. Prevent impacts. They are chemically inert. Acids or bases will not damage them. This fits different melting tasks.

(Cylindrical / Flat Bottom / Curved 5ml – 2000ml Alumina Al2o3 Ceramic Porcelain Crucible for Melting Gold)

Applications of Cylindrical / Flat Bottom / Curved 5ml – 2000ml Alumina Al2o3 Ceramic Porcelain Crucible for Melting Gold

These alumina ceramic crucibles deal with severe heat. They thaw gold safely. The Al ₂ O ₂₃ material is key. It holds up against temperature levels over 1000 ° C quickly. Gold melts around 1064 ° C. Alumina survives much hotter. This crucible will not split or warp throughout melting.

The material withstands chemical strike. Molten gold is extremely reactive. Alumina doesn’t react with it. Your gold remains pure. No contamination happens. Crucible product mixing into your thaw misbehaves. Alumina prevents this. It guarantees your gold’s high quality continues to be high.

Various shapes serve different requirements. Round shapes are common. They use great quantity. Level lower crucibles stand steady. They sit safely on heating system surfaces. Rounded lower layouts assist pouring. Molten gold flows out efficiently. Less metal obtains stuck inside.

Sizes range extensively. Tiny 5ml to 20ml crucibles match little samples. Jewelers checking small gold pieces make use of these. Tool dimensions like 50ml to 200ml manage casting projects. Bigger sizes, 500ml to 2000ml, fit refining bigger sets. Industrial gold recyclers require these large ones.

Thermal shock resistance is crucial. You heat the crucible quickly. You may cool it down fast later. Alumina manages these unexpected temperature level modifications well. Other products could smash. Alumina stays strong. This resilience conserves cash. Crucibles last longer.

Reusability matters. Alumina crucibles tidy conveniently after usage. You utilize them often times. This decreases expenses over time. They are cost-effective devices. Little gold refiners advantage. Large operations depend on them also.

Company Profile

Alumina Technology Co., Ltd,. We focus on the research and development, production and sales of alumina products, serving the electronics, ceramics, chemical and other industries. Since its establishment in 2005, the company has been committed to providing customers with the best products and services, and has become a leader in the industry through continuous technological innovation and strict quality management.

Our products includes but not limited to Alumina Boat, Alumina Crucible, Alumina Dish, Alumina Foam Filter, Alumina Plate, Alumina Rod, Alumina Bar, Alumina Balls, Filter Alumina, Nano Alumina Powder, Spherical Alumina Powder, ect. please feel free to contact us.(nanotrun@yahoo.com)

Payment Methods

T/T, Western Union, Paypal, Credit Card etc.

Shipment Methods

By air, by sea, by express, as customers request.

5 FAQs of Cylindrical / Flat Bottom / Curved 5ml – 2000ml Alumina Al2o3 Ceramic Porcelain Crucible for Melting Gold

5 FAQs: Alumina Ceramic Crucibles (5ml-2000ml) for Gold Melting

What’s the highest temperature these crucibles handle?
These crucibles withstand extreme heat. Flat bottom types manage 1750°C. Cylindrical and curved bottom types tolerate 1800°C. Never exceed these limits. Crucibles crack above their max temperature.

Can they handle sudden temperature changes?
Alumina ceramic resists thermal shock well. It handles rapid heating and cooling cycles better than many materials. Avoid extreme, sudden temperature shifts anyway. Gradual heating and cooling is always safer. It prolongs crucible life.

What metals or chemicals damage them?
Pure gold melts safely in alumina. Avoid strong alkalis like sodium hydroxide. They attack the alumina material. Certain fluxes can also cause damage. Check chemical compatibility first. Use only suitable fluxes.

How do I clean them after melting gold?
Remove cooled slag carefully. Soak the crucible in dilute hydrochloric acid overnight. Rinse it thoroughly with clean water afterward. Let it dry completely before reuse. Avoid mechanical scraping; it damages the surface.

How do I pick the right size crucible?
Choose based on your gold amount. Fill the crucible only half to two-thirds full. Gold expands when molten. Overfilling causes spills and is dangerous. A 2000ml crucible suits larger batches. Small 5ml ones work for tiny samples. Match size to your melt weight.

(Cylindrical / Flat Bottom / Curved 5ml – 2000ml Alumina Al2o3 Ceramic Porcelain Crucible for Melting Gold)