Magnesia Cupels

Qingdao Yosion Labtech Co.,Ltd is one of the leading magnesia cupels manufacturers and suppliers China, if you are looking for hot sell cheap and low price and high quality, top quality, premium quality, super quality and advanced magnesia cupels from professional factory, dealer and franchiser, please feel free to contact us. And welcome to wholesale high grade and competitive price industrial magnesia cupels, and direct marketing, direct selling and direct distributor products from us, and to check products metallurgy with us.Magnesia Cupel :1. Made of magnesia.2. Used for smelting and assaying. 3. High thermal shock resistance.During cupellation, the lead is oxidized to litharge (PbO), most of which is absorbed by the cupel. Gold, silver, platinum and other precious metals form a bead in the cupel.The bead is subsequently treated to determine its precious metal content. Cupels are typically made from magnesia MgO ( sometimes mistakenly referred to as magnesite), bone ash, Portland cement and other materials.Typical cupellation furnace temperatures in gold and silver assays are 900-1000°C, but can vary with technique, air flow volume and cupel material.Cupellation is the last and most important step of the fire assaying process and as such, the quality of the cupels is extremely important.Available sizes are: 6A, 7A, 7AS, 7AL, 8A and 9.Customized sizes and services are also available.Factory: FAQ    >> 1.Are you a factory or a trading company?    1.We are a factory focused on rigging hardware over 8 years.    2.Our main business is automated sampling
Magnesia Cupels