HSR®-High-Surface-Refining-A-New-Development-in-the-Precious-Metal-Refining-Process-AR25-NV.pdf

1、HSR-High Surface Refining:a new development in precious metal refining processEnrico Cappellini*,Giovanni Faoro*,Manuel Boscato*,*Jacques du Toit,*Shaun Mc Ewan*The Perth Mint(Australia),*IKOI S.p.A(Italy)Summary1.THE PERTH MINT2.IKOI Precious Metals Ingenuity3.Review of main existing refining techn

2、iques4.Focus on Aqua Regia and Electrolysis5.HSR High Surface Refining,what is it and how it can impact refining6.Test results and future developments2THE PERTH MINT3 3IKOI SpA:DRIVING CHANGE IN THE PRECIOUS METAL INDUSTRYIKOI is a technology provider for the precious metal industry worldwide.Thanks

3、 to our expertise and continuous research and development,we provide innovative products and sustainable solutions for precious metal refiners and recyclers.Our solutions help refiners to achieve quality,efficiency and accurate metal control throughout every production step.R4Different production sy

4、stems:Aqua Regia Process from metal flakesElectrolysis Process from metal anodesALS System Hydroclorination Inquartation Process(Acid Parting)Liquid Extraction Miller Process Wohlwill ProcessDifferent processes:MeltingHydrometallurgical processesPyrometallurgical processesFumes and effluent treatmen

5、tLab AnalysisRecovery from sweeps/by productsCastingMinting/stampingAnd material handlingMAIN EXISTING REFINING SYSTEMS5The aqua regia process is a widely used method in the field of precious metal refining,thanks to effectiveness in dissolving and separating noble metals such as gold,platinum,and p

6、alladium.Aqua regia,a mixture of concentrated nitric acid(HNO3)and hydrochloric acid(HCl)in a 1:3 molar ratio,is one of the few chemical solutions capable of dissolving gold,which is otherwise highly resistant to chemical reactions.The process operates through a reaction where nitric acid oxidizes t