Скачать или смотреть Fire assay crucible for gold melting

Website :  www.zen-ceramic.com  
Liling zen ceramic co., ltd is a professional manufacturer .We have been producing fire assay crucibles ,magnesium cupels and  Alumina crucible etc.
What is Fire Assaying?
Fire assaying is the quantitative determination in which a metal or metals are separated from impurities by fusion processes and weighed in order to determine the amount present in the original sample.

Product Introduction
Metals recovered in fire assaying are the metals that emerge from the fusion of the material in a assay furnace, for gold, usually at temperatures of about 2,000 Degrees F. The Fire Assay Method is centuries old, but it is still one of the most reliable methods for performing assays (to determine the metal content of a ore) of ores that contain precious (noble) metals - Gold, Silver and Platinum.

Fire Assay Crucibles have a higher than normal resistance to cracking under fire assay conditions.Our crucibles are used in laboratories throughout international marketplace. We have a variety of shapes and sizes available to cater to specifications required.Our crucibles give longer life, faster melting, constant melting speed and exceptional resistance to violent changes of temperature.

Applications
Precious Metal Analysis
Mining Laboratory
Laboratory Testing
Mineral Assaying
Fire Assaying
Gold Assaying

Features
long Lasting, can be used 5-6 times.
High mechanical strength designed to withstand severe thermal shocks Special formula, curing and pressing process
Multi-use crucible
Can withstand extremely corrosive fire assay environments
Can withstand repetitive thermal shocks from 1390 degree celcius to room temperature.

Chemical Composition
SiO2 54.60%
Al2O3 40.31%
Fe2O3 1.11%
TiO2 0.47%
CaO 1.28%
MgO 0.34%
K2O 0.61%
Na2O 0.39%
L.O.I(loss on ignition) 0.21%

Fire assay it's a classical analytical method for applying metallurgical principles and techniques to analytical chemistry. To test the content of precious metals in minerals and metal products determined by melting and roasting. The method has the advantages of good sample representation, wide applicability, good enrichment effect and so on.i

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Liling Zen Ceramic Co Ltd
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