bone ash cupels in cupellation dates back to ancient times and continues to be a common practice in the refining industry today. The cupels are typically shaped like shallow, bowl-like containers with a hollow center to hold the metal being refined. They are able to withstand the high temperatures necessary for the cupellation process without melting or deteriorating.
Bone ash cupels are manufactured by mixing bone ash, clay, and water to form a paste that is then molded into cup shapes. The cupels are fired at high temperatures to burn off any organic matter, leaving behind a porous structure that is able to absorb and remove lead and other impurities during the cupellation process.
Bone ash cupels have excellent thermal stability and can withstand the high temperatures required for cupellation without deforming or cracking. They also have a high absorption capacity, allowing them to efficiently remove impurities from precious metals such as gold and silver.
Bone ash cupels are commonly used in the jewelry and mining industries for the refinement of precious metals. They are essential tools in the cupellation process, where they act as absorptive containers for the lead oxide formed during the oxidation of base metals, allowing the pure precious metal to be recovered.
FAQ
1.Can I get samples from your factory?
Yes, sample is free, but the express charge is yours.
2.What’s the delivery time ?
7 working days for standard products 30 days for customized products.
3.What is the MOQ?
No limit to the quantity. We can offer the best proposal and solutions according to your condition.
Advantages
1.Price:Our products compare favorably with other traders.
2.History:We are a company combined with R&D, production and sales wholly,
3.Group:We have our own team to research, design, produce and sell.
4.Philosophy:With excellent quality, firt-class service, honest business
About XTL
Liling Xing Tai Long Special Ceramic Co., Ltd. was established in 1997, specializing in research and development, manufacturing fire assay crucible and cupel.
The products are used for precious metal analysis, mining laboratory testing, mineral assaying, and gold assaying. Fire assay crucibles material is fireclay mixed with other refractory materials, they can withstand temperature up to 1300℃. They have excellent resistance against flux attack, erosion, cracking, and thermal shock.
As a powerful professional manufacturer of fire assay crucible with cupel, we have 7000 square meters new factory building with the automatic production line.
The company always adheres to quality survival, innovation, and development, the integrity of the brand, to protect and thoughtful after-sales service enterprises as the goal. Over the years, our products are sold well all over the country and exported to Germany, the United States, Brazil, Russia, Mexico...more than 20 countries, product quality, and service are highly praised by customers.
“Superior quality, preferential price” is our management tenet. we sincerely expect to cooperate with the masses of domestic and foreign customers, common development! Welcome to visit and investigate of our company.