Fire Assay Cupelled Mabor Cupels¹

Product Description Cement Cupel :1. Made of cement.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.Yosion aims to manufacture cupels with followings:Robust mechanical strength.Not affected by atmospheric changes.No spitting of lead.Rapid absorption of large quantity of litharge.Free from cracking and pitting.Beads are easily removable.Perfect uniformity of quality.Reduced tendency to freeze.Consistently low losses.Regularly tested in our own assay lab. Manufactured with unique blend of Magnesium Oxide and special fluxing ingredients.Available sizes are: 6A, 7A, 7AS, 7AL, 8A and 9. Customized sizes and services are also available. Technical Parameters: SizeOuter Dia mmCup DiammBase  Dia m mHeight   of Cupel  mmDepth  of Cup  mmHeight   of Ridge mmNet Weight gNos Per cartonCarton Dimension cm DD1D2HH1H2   2x2418191784.513104034x22x223262320205.581786434x22x22429242322682048630x30x1553527262686.53537834x22x226A403030261266220034x22x227A4030303212107220034x22x227AS4032303215106220034x22x228A45383735131310320038x24x218AM45333735121511020038x24x2195140433011512012034x22x229A51403934151412312034x22x221156464637141116610034x22x2230x25x22Z272723272310/2950030x30x15Z404032403015/7320034x22x22Projects ReferenceExhibition Show 

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