Product Details
1. Overview of Mgo Ceramic Crucible
1.1 Definition and Basic Features
Magnesia ceramic crucible, also known as high-purity MgO melting crucible, is an ultra-high temperature refractory lab vessel manufactured from high-purity magnesia powder via isostatic pressing and ultra-high temperature solid-state sintering. It is a specialized high-temperature container for alkaline sample melting, rare earth metallurgy and vacuum thermal treatment laboratories, capable of enduring extreme ultra-high thermal environments while maintaining stable physical and chemical inertness against alkaline molten media.As a high-performance refractory ceramic product, it carries unique alkaline corrosion resistance and ultra-high temperature resistance that alumina ceramics cannot match. It acts as the core supporting consumable matched with high-temperature induction furnaces, vacuum sintering furnaces and alkaline melting muffle furnaces.
1.2 Classification and Grade Standards
Based on magnesia purity and sintering density, magnesia crucibles are produced with mainstream high-purity grade to meet ultra-high temperature alkaline experiment demands:
99.8% high-purity magnesia grade contains 99.8% MgO with ultra-low impurity content, strictly controlled volatile oxide residues. It is exclusively developed for ultra-high temperature alkaline melting, rare earth raw material calcination and high-alkali sample thermal analysis, avoiding chemical reaction and sample pollution when contacting alkaline melts.
2. Core Characteristics of Mgo Ceramic Crucible
2.1 Physical Properties
The core physical advantage of premium magnesia crucible lies in its high sintered density and compact grain structure. After high-temperature densification sintering, the blank forms a tight non-porous body, effectively blocking penetration and leakage of molten alkaline metal and oxide slag under long-time ultra-high temperature working state.
It owns balanced flexural, compressive and fracture strength, maintaining stable dimensional rigidity under static load at extreme high temperature without softening or permanent deformation. The inner wall is precisely polished to a smooth surface, easy to clean after alkaline melting tests and supports repeated experimental cycles under standardized operation.
2.2 Chemical Properties
The primary chemical component is high-purity magnesia (MgO), with only trace impurity oxides inside. It exhibits outstanding chemical inertness against all kinds of alkaline molten materials, alkaline earth metals and alkaline slag, barely generating chemical dissolution or ion exchange. It will not contaminate alkaline test samples during melting, fully guaranteeing data accuracy of alkali metal quantitative analysis.
Limitation note: Magnesia shows weak resistance to strong acid and hydrofluoric acid. Long-term melting of acidic samples is not recommended.
2.3 Thermal Performance
Magnesia ceramic crucible has industry-leading ultra-high temperature resistance. Its continuous stable long-term working temperature reaches 2400°C, far exceeding alumina ceramic crucible. It can withstand intermittent peak heating cycles up to 2400°C. It features moderate thermal conductivity of 15.9–42 W/m·K, uniform heat transfer inside the cavity to avoid local overheating of samples.
With a moderate linear thermal expansion coefficient of 8.6×10⁻⁶ /°C (40–250°C), it delivers reliable thermal shock resistance and is not prone to cracking under reasonable rapid heating & cooling cycles, matching the temperature curve of vacuum ultra-high temperature furnaces.
3.Advantages of Mgo Ceramic Crucible
3.1 Unmatched Ultra-High Temperature Structural Stability
Different from alumina, quartz or ordinary porcelain crucibles, magnesia crucible keeps complete structural rigidity at temperatures above 1800°C, no softening, deformation or adhesion with alkaline sintered materials. It supports uninterrupted long-cycle ultra-high temperature alkaline experiments and ensures repeatable and consistent test results across batches.
3.2 Zero Contamination for Alkaline Test Samples
Thanks to 99.8% high-purity magnesia raw material and fully dense sintered structure, it barely releases impurity ions when contacting alkaline melts at extreme temperature. It becomes the only reliable crucible choice for trace alkaline element analysis, rare earth/alkali metal melting and high-purity alkaline material research, fully satisfying strict quantitative analysis precision requirements of professional labs.
3.3 Long Service Life & High Cost Efficiency
Equipped with balanced thermal shock resistance and exclusive alkaline corrosion resistance, the crucible can be reused dozens of times under standardized alkaline melting operation. Compared with disposable graphite crucibles and easily-corroded alumina crucibles for alkali tests, it extends service cycle significantly, cuts long-term single-test cost for laboratories, and is an economical consumable for batch ultra-high temperature alkaline experiments.
3.4 Wide Compatibility with Specialized High-Temp Equipment
Magnesia crucibles are supplied in standard cylindrical, rectangular, arc-bottom shapes with optional matched magnesia lids, and support full customized machining for special inner cavity sizes, wall thickness and bottom structures. It is fully compatible with vacuum high-temperature furnaces, induction melting furnaces, alkaline muffle furnaces and thermal analysis instruments, widely applied in alkali metal oxide sintering, rare earth metallurgy, high-alkali sample ashing, high-purity powder calcination and precious alkaline raw material refining.
Product Parameter Table
Development History
Patents and certification
We’ve obtained various global certifications including CE, EMC, LVD, RoHS, FDA, MSDS, ISO 9001, SGS and TUV. We also own eight registered trademarks and forty technical patents to support independent R&D.
Our proprietary core technologies run through all product lines: porous ceramics, industrial ceramic components, special glass, metallized ceramics, liquid absorption cotton, ozone generators and silicone goods. All products are manufactured in strict accordance with international quality standards, delivering reliable and high-performance solutions that have gained wide recognition and market trust worldwide.
Package
We adopt scientific and standardized packaging solutions tailored to product characteristics to effectively prevent collision, extrusion, dust and moisture damage. With mature global transportation system and strict shipment inspection procedures, we ensure all products remain intact and stable during long-distance delivery, providing customers with safe, efficient and reliable one-stop logistics service.
Services
inquiry & Customization
We provide fast and accurate quotation response for all your inquiries. Flexible OEM & ODM customization solutions are available to meet your unique product design, packaging and branding requirements.
Order Quality Control
We keep clients updated with full production progress throughout the whole order cycle. Our QC team carries out strict comprehensive pre-shipment inspection to guarantee all goods comply with your quality standards before delivery.
Customs Document Support
We prepare a full set of standard export documents including commercial invoice, packing list, certificate of origin and other certification papers, to ensure smooth global customs clearance for shipments to all destinations worldwide.
One-Stop Logistics
Multiple shipping methods including sea freight, air freight and express delivery are offered to match your schedule and budget. We supply real-time cargo tracking service so you can monitor shipment status anytime.
Flexible Payment
We support a wide range of secure international payment terms such as T/T, L/C, Western Union and other mainstream cross-border settlement methods to reduce your cross-border transaction risks.
After-Sales Support
Our professional after-sales team offers timely technical and business support all year round. We maintain steady long-term stable supply capacity to fully back up your continuous market sales and project demands.
FAQ
01
Question: Can you produce based on customers’ drawings or physical samples?
Answer: Absolutely yes. We accept technical drawings in all mainstream file formats as well as actual physical samples. Before formal production, our engineering team will provide a full professional DFM feasibility evaluation for your reference.
02
Question: How long is the production lead time for custom orders?
Answer: Sample lead time: 3–7 working days. Custom mold lead time: 5–10 working days (we will confirm the cycle separately with you for complex molds). Mass production lead time: 7–20 working days, depending on product structure complexity and order quantity.
03
Question: What’s your minimum order quantity for custom products?
Answer: We provide flexible MOQ solutions for all customized items. We will try our best to set a low minimum order volume to support your small-batch trial orders, meanwhile we can handle stable mass production to satisfy your long-term bulk demands.
04
Question: What customization services can you provide?
Answer: We support comprehensive one-stop customization, including product size, shape, appearance, precision tolerance, surface treatment, hole grooving, bending, cutting and adjustable high-temperature resistant parameters. Custom engraved LOGO and exclusive customized packaging are also available as extra personalized options upon request.
05
Question: Do you accept third-party inspection of finished products?
Answer: Yes, we fully cooperate with all mainstream authorized third-party testing institutions. Well-known organizations such as SGS, BV and other internationally recognized inspection bodies are all acceptable. We can supply complete official inspection reports and material certification documents as you require.
06
Question: Can you customize raw material options for products?
Answer: Sure. We can select and match appropriate raw materials according to your application scenarios, working conditions and performance requirements, including alumina, zirconia, quartz, silicone and other special engineering materials, and adjust related performance parameters to meet your usage standards.
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