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7X Magnesia Cupels

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MOQ : 5 Metric Tons

7X Magnesia Cupels Specification

Form
Solid Cupel

Water Absorption
Very low

Density
1.8 Gram per cubic centimeter(g/cm3)

Melting Point
Approx. 2800°C

Usage & Applications
Crucible for separating precious metals from lead and other base metals

Surface Finish
Smooth, regular

Application
Fire Assay, Precious Metal Analysis, Gold & Silver Refining

Chemical Composition
High Purity Magnesia

Hardness (%)
Not less than 60%

Purity(%)
Minimum 97% MgO

Types of Refractories
Basic Refractory

Shape
Cup-shaped

Porosity
Controlled, porous structure for efficient absorption

Dimensional Stability
Excellent at high temperatures

Strength
High mechanical strength for thermal cycling

Specific Gravity
2.3-2.4 g/cm³

Thermal Conductivity
Low

Color
White or Light Grey

Capacity
Accommodates 25-35g assay lead

Compatibility
Suitable for use in muffle furnace

Cupel Size
Standard 7X size (approx. 34 mm diameter x 24 mm height)

Reusability
Single-use

Absorption Capacity
Efficient absorption of litharge

Packaging
Carton Box or as per requirement

7X Magnesia Cupels Trade Information

Minimum Order Quantity
5 Metric Tons

Supply Ability
50 Metric Tons Per Month

Delivery Time
45 Days

Main Domestic Market
All India

About 7X Magnesia Cupels

7X Magnesia Cupels are specifically developed for the convenient and low price purification of metals like gold and silver by absorbing even the smallest content of lead impurity from it. These does not crack or break easily over the course of time. Moreover, these 7X Magnesia Cupels are maintenance free and available in a variety of specifications.

Other Detail :-

Application : Industrial;,Commercial
Color: Milky White
Material: Magnesia
Mgo Content: 99%
Size: Customize

Features :-

Portable
Less Maintenance
Durable

Technical details

Packaging Size	300 Piece
Color	Milky White
Material	Magnesia
Mgo Content	99%
Brand	iMagCup
Height	35 mm
Width	39.7 mm
Ridge	15.5 mm
Depth	11.8 mm
Weight Per Cupel	76 g
Lead Absorption Capacity	65-70%
Box Weight	23.6 Kg

Exceptional Purity and Performance

Crafted from highly pure magnesia, 7X Magnesia Cupels ensure reliable results during fire assay processes. Their basic refractory nature provides stable dimensional integrity and high resistance to extreme temperatures, up to approximately 2800C. The cupels well-controlled porosity facilitates efficient litharge absorption, critical in precious metal separation.

Designed for Efficiency and Safety

These cupels are engineered to accommodate 2535g of assay lead and are suitable for single-use, ensuring consistency in each analysis cycle. Their robust mechanical strength supports repeated heating and cooling during thermal cycling, while the smooth surface finish aids in easy handling and recovery of precious metals after the assay.

FAQs of 7X Magnesia Cupels:

Q: How should 7X Magnesia Cupels be used in the fire assay process?

A: To use 7X Magnesia Cupels, place your lead button and assay sample in the cupel and insert it into a preheated muffle furnace. The cupels porous magnesia structure absorbs litharge during cupellation, helping isolate precious metals like gold or silver.

Q: What materials are compatible with 7X Magnesia Cupels?

A: These cupels are suitable for precious metal analysis involving gold, silver, and other noble metals with lead as a collector. They are optimized for muffle furnace use and efficiently absorb litharge formed during the process.

Q: When should the 7X Magnesia Cupels be replaced or disposed of?

A: 7X Magnesia Cupels are intended for single-use only. Dispose of them after each assay session to maintain result accuracy and prevent contamination.

Q: Where can these cupels be procured and who supplies them?

A: They are available from various distributors, exporters, manufacturers, and wholesalers across India, and can be packaged in carton boxes or as specified by the customer.

Q: What is the benefit of high-purity magnesia in these cupels?

A: Using magnesia of 97% or higher purity ensures chemical inertness and mechanical strength, resulting in minimal contamination and reliable assay outcomes, even under stringent thermal cycles.

Q: What safety precautions should be considered during use?

A: Operators should handle hot cupels with appropriate tongs and protective gear. Used cupels may contain traces of lead or precious metals, requiring proper cooling and safe disposal according to laboratory protocols.

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