SPEAKER BIOS Dr. Valeriy Kosynkin • Dr. Valery Kosynkin is one of the world's preeminent chemists and metallurgists for Rare Earth Elements (REE). Dr. Kosynkin holds a doctorate of philosophy from Moscow State University. Since 1959, Dr. Kosynkin has been employed by VNIIHT – The Russian Leading Institute of Chemical technology, initially as a Researcher in Uranium technologies, and from 1973 as the Head of Research and Development for REE chemistry and technology. Dr. Kosynkin has overseen the technical research and commissioning of REE production and extraction facilities in Russia, Ukraine, Estonia and Kazakhstan. Jean-Paul Tognet • Jean-Paul Tognet is a retired French chemist and nuclear engineer having spent his 35 year business career in the Rare Earths sector. . In 1982, he began to lead the chemical engineering department at the Rhone-Poulenc Rare Earths plant in La Rochelle, France. Then, as Industrial and Raw Materials Director from 1992 to 1999 he managed the development of Rhone Poulenc RE plants in France, USA, Japan and China. Rhone Poulenc ’ s name eventually changed to Rhodia (now a branch of Solvay) where he continued global upstream management and finally was placed in charge of the evaluation of new Rare Earth projects globally Steve Mackowski • Mr. Mackowski joined Hastings after serving at rare earths company Arafura Resources Ltd. as General Manager Projects Development & Technology. Mr. Mackowski is a qualified engineer in mineral processing with over 30 years technical and operational experience in rare earths, uranium, industrial minerals, nickel, kaolin and iron ore.
The 3C of Rare Earths Metallurgy Chemistry, Chemistry, Chemistry Yes & Not really !
Summarize of RE Industry Rich , coarse, concentrated Physical Chemical RE Minerals Conc. Conc. Pure & easy liberated Placers, Veins,… deposits F.Carbonate : BN Cracking Phosphate : MZ, XN Beneficiation Exo, Rad* Pufication range Finishings Individual Hydro, Pyro REO content M.Mixed & liberated for RE Metallurgy range Markets Separation Oxides : LP,… Silicates : ED ,… Phosphates : AP, CH,… F.Carbonates : PA,SY,… Pure & IX, SX Mixed Weathered, Adsorbed in Leaching Salts, Cl or NO 3 Oxides, Al.Phosphates : FL,.. solutions Ionic ores : Clays Metals Poor , fine, disseminated RE Minerals BN Bastnasite, MZ monazite, XN xenotime, LP loparite, ED eudialyte, AP apatite, CH churchite, PA parisite, SY synchisite, FL flo rencite,… JP.TOGNET 2012
Hydro, pyro metallurgy range Mineralogy complexity Physical Concentrate Mix Physical Concentrate Crude ore High REO content Intermediate REO content Low REO content MZ, XN BN LP ED,… YS IO BN Silicates NaOH H 2 SO 4 Salt direct/alkal Alkaline Carbo Roasting chlorination cracking Roasting Roasting leaching Selct.RE Crude RE HCl Water Water HNO 3 dissolution dissolution dissolution dissolution precip. Hydroxide Ce conc. + Crude RE HCl, HNO 3 Crude RE Crude RE HCl RE 3 Cl solution dissolution dissolution NO 3 solution Cl solution SO 4 solution Non RE + Rad* Purification of Mix RE solutions by Chem and/or SX Purified Mix RE solution (Cl, NO 3 , SO 4 ) ready for individual separation BN Bastnasite, MZ monazite, XN xenotime, LP loparite, ED eudialyte, AP apatite, CH churchite, PA parisite, YS synchisite, FL flo rencite,… JP.TOGNET 2012
Complex silicates RE ores such as Eudialyte, Fergusonite,… proposed metallurgical process… Based on Mineralogy : - Crude ore : Low REO Sulfuric acid H 2 SO 4 - Physical conc. : High REO - Roasted or not Sulfuric Baking or in pulp cracking Atmospheric or Pressure Cake Slurry RE+M+Gangue Sulphates Washing, Dilution Gangue residue Precipitation, Purification L/S Filtration RE Sulphate solution Low REO conc. Purif & changing anion by : RE recovery & - Precipitations + Dissolutions Effluent treatment… concentration - IX / Solvent eXtraction ?! Mix.RE Chloride/Nitrate solution ready for SX separation JP.TOGNET 2012
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