Product Introduction

A good cupel should be perfectly smooth on the inside, and of the right porosity. If it is too dense, the time of cupellation is prolonged and the temperature of cupellation has to be higher, thus increasing, the loss of silver. If the cupel is too porous it is said that there is danger of a greater loss, due to the ease with which small particles of alloy can pass into the cupel. The bowl of the cupel should be made to hold a weight of lead equal to the weight of the cupel.

1.    Made of Magnesite

2.    Used for smelting and assaying

3.    High thermal shock resistance

4.    Magnesia: ≥95%

5.    Silica, Silicon dioxide: 0-5%

6.    Property: high refractoriness(1100 centigrade degrees),rapid absorption(70%),and recovery rate of 97%-98.5%,easy to use, without milling

High refractoriness (1100 centigrade degree), 70% rapid absorption and recovery rate of 97-98.5%. Without milling.

                                                                                                                                                                 Typical Chemical Analysis
Working Temperature1000℃
Specific Gravity2.35
Lead Absorption70%
                                  ItemDescription                              ItemDescription



Weight: 50-55 grams


Weight: 80-86 g
Diameter: 40 mmDiameter: 43-45 mm
Height: 25 mmHeight: 30-34 mm


Weight: 58-60 g


Weight: 120-123 g
Diameter: 40 mmDiameter: 50-52 mm
Height: 28-30 mmHeight: 30-34 mm
                                                                                                                                   Note :We can provide you the product by you desire.

Product Information


Company Advantages

Philosophy:With excellent quality, firt-class service, honest business
History:We are a company combined with R&D, production and sales wholly,
Quality:We have passed IS0 9001:2005. standard, stable,reliable

Certifications and Patents




Why us?        


* Professional manufacturer since 1997.
* Strict quality control on production process and tolerance.
* Free samples available
* Customized production based on your drawing or specification
* On-time delivery and reliable support and service
* Inventory available for quick shipment
* We keep confidentiality of all the drawings and business information between us.


Are you a trading company or a manufacturer?         


* We are a manufaturer. 


Can you provide the free samples?          


* Yes,we can offer free sample if we have it in stock,but the courier fee is to be collected.


Do you accept customized production based our specification?         


* Yes,we offer OEM and ODM service. Just send us your drawing if you have it. If you don’t have a drawing, just tell us your idea, we will work out the drawing for you.


What's the delivery time?        


* 7 working days for standard products 30 days for customized products.

If you have another questions,please feel free to contact us.

Liling Xing Tai Long Special Ceramic Co.,Ltd

Contact: Fanny

Tel: +86 13975373343


Email: admin@llxtl-china.com    


Company address: Shentan Industrial Zone, Liling, Hunan, 412200

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Take advantage of our unrivaled knowledge and experience, we offer you the best customization service.

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The first thing we do is meeting with our clients and talk through their goals on a future project.
During this meeting, feel free to communicate your ideas and ask lots of questions.
They are all manufactured according to the strictest international standards. Our products have received favor from both domestic and foreign markets.
They are now widely exporting to 200 countries.

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