VGR Gold Refinery employs advanced assaying techniques to monitor the quality and fineness of gold and silver throughout the refining process.Our technology includes traditional fire assay, spectrometry(XRF), and modern analysis methods.Utilizing the Cupellation method, the gold content within alloyed metals is determined by isolating all metals except silver using lead. Furthermore, through the Acid Parting method, silver is separated from silver-gold alloy using nitric acid, while the residual substances undergo washing, drying, and tempering to extract pure gold.
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