cupelling gold | XTL

XTL sintyron Best High-end quality Ceramic clay Fire Assay Crucible manufacturers for gold smelting Company

High-end quality Ceramic clay Fire Assay Crucible manufacturers for gold smelting compared with similar products on the market, it has incomparable outstanding advantages in terms of performance, quality, appearance, etc., and enjoys a good reputation in the market. Xingtailong summarizes the defects of past products and continuously improves them. The specifications of High-end quality Ceramic clay Fire Assay Crucible manufacturers for gold smelting can be customized according to your needs.

Fire Assay Crucibles have a higher than normal resistance to cracking under fire assay conditions. Our crucibles are used in laboratories throughout the international marketplace. We have a variety of shapes and sizes available to cater to the specifications required.

Our crucibles give longer life, faster melting, constant melting speed, and exceptional resistance to violent changes in temperature.

XTL sintyron Quality China Fire Assay Crucible Manufacture And Factory Magnesia Cupel for Melting Gold Manufacturer

6A 7A 8A China Fire Assay Crucible Manufacture And Factory Magnesia Cupel for Melting Gold compared with similar products on the market, it has incomparable outstanding advantages in terms of performance, quality, appearance, etc., and enjoys a good reputation in the market. Xngtailong summarizes the defects of past products and continuously improves them. The specifications of 6A 7A 8A China Fire Assay Crucible Manufacture And Factory Magnesia Cupel for Melting Gold can be customized according to your needs.

Cupel is a porous refractory for absorbing lead oxide when ash blows the lead buckle. The main component of magnesia is magnesium oxide, which is a very good refractory and can resist the erosion of alkaline flux. Lead oxide is a very strong alkaline flux. At high temperatures, the affinity between lead oxide and silica is very strong, which can invade the silicate in the cupel. There is more silicate in the ash cupel and cement cupel. After blowing with this kind of cupel, there will be pits on the surface of the cupel, and precious metals will be lost as a result. Using magnesia cupel, no such phenomenon after ash blowing, the surface is very smooth.

XTL sintyron Best Fused silica melting crucible, quartz smelting Clay Crucible Manufacturers bowl for gold and platinum

Selected quality quartz as materials, combined with advanced ceramic processing workmanship, mainly used for melting platinum, gold, silver, copper and another high temperature alloy, high purity, anti-corrosion, anti strong acid and strong alkali, good hardness, high thermal shock resistance. The main component is SiO2 ≥80%,  Al2O3 (≤17%) and other is 3%( K2O, Na2O, Fe2O3), There is no crack after 10 times sudden heat and sudden cold at 1100℃⇌ 20℃, and no crack after 10 times using oxygen cutting gun to spray 1700-1800 flame on the crucible.

Fused silica melting crucible, quartz smelting Clay Crucible Manufacturers bowl for gold and platinum compared with similar products on the market, it has incomparable outstanding advantages in terms of performance, quality, appearance, etc., and enjoys a good reputation in the market. Xngtailong summarizes the defects of past products and continuously improves them. The specifications of Fused silica melting crucible, quartz smelting Clay Crucible Manufacturers bowl for gold and platinum can be customized according to your needs.

XTL sintyron Features of The Fire Assay Method

The fire assay method is a classic analysis method that applies the principles and techniques of metallurgy to analytical chemistry, and is one of the oldest methods in analytical chemistry.

The fire assay method is to quantitatively determine the content of precious metals by adding flux to smelt ores and metallurgical products.

XTL sintyron Fire Assay theory and method