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PhosphonicSTM Precious Metal Recovery Extracting high value Precious Metals from Process and Waste Streams PhosphonicS™ Overview Private Venture Capital backed company Established in 2003 Commercialising novel technology developed at University of London Raised new funding in January 2010 to support further growth Facts: Head Office and R&D centre: Milton Park Oxford, UK 3 manufacturing sites 20 man technical team working in fully equipped laboratory, including ICP Global sales footprint Network of sales agents including North America, Japan, China Global development partners PhosphonicS™ Location Located at Milton Science Park, Oxfordshire, UK Precious Metal Recovery - Background • Precious Metals: wide range of applications in chemical catalysts, electrochemical, electronics, … • PM recovery is essential for process economics • Recovery of PMs from solution in Process and Waste Streams presents a technical challenge • Conventional methods of recovery can be ineffective Lower PM concentrations Highly acidic environment Organic / aggressive solvents PhosphonicSTM offers an effective new Precious Metal Recovery solution PhosphonicS™ Precious Metal Recovery PhosphonicS™ products are silica-based, surface-coated with optimum functional groups for PM Recovery Pre-scavenging Post-scavenging Portfolio of Scavengers for Precious Metals Broad Coverage of Precious Metals Wide range of Precious Metals can be treated Two Main Processes for Metal Scavenging • Column – Fixed Bed • Pass solution through column/fixed bed • Flow rate, contact time, temperature dependent on metal concentration and Performance Target • Collect loaded Scavenger and ship for refining • Wash with solvent or water as required • Fixed and mobile unit options • Slurry/Batch Mode • Stir Solution with Scavenger • Time and Temperature dependent on Conc. and Performance Target • Filter, wash if necessary and dry to defined level Lower concentration bulk streams: scavenging benefits • Energy On site Distillation • Fixed costs • Opex costs • Time ship ship • Treatment Cost Lower concentration Incineration • Time catalyst purge stream • Liquid handling and • Transport costs/issues refining problems • Time On site • Efficient concentration onto solid support • Low capex operation • Reduced opex and waste costs • Easier transport and ship Scavenging handling, lower transport cost Precious Metals Refining • Lower refining treatment costs - high refining yields Precious Metal Recovery: Application Examples Current Plant/Field Applications include: • Rhodium removal from low concentration catalyst streams • Platinum removal from reactive chemical process & waste streams (e.g. highly acidic streams) • Ruthenium removal from coating and catalyst solutions • Palladium recovery from chemical catalyst streams • Selective Gold removal from base metal streams • Post refinery Waste Streams Rhodium Catalyst Recovery • Recovery of Rhodium from a Catalyst 130 ppm Rh purge stream • 200 m3 per annum scale • Low capex unit installed ($100k) • >98% metal capture and ~3 w/w % loading • Refining return 97% <3 ppm Rh Superior to alternative treatment options Fast Capex payback Annual cost saving ~ USD 320k Selective Precious Metals Recovery • Acidic Process Stream • 110 ppm Palladium, 190 ppm Platinum, 5 ppm Rhodium • High concentration of base Metals present • Copper (89 g/L), Nickel (2.7 g/L), Zinc (19 g/L) • > 99% Platinum and Palladium and > 90% of Rhodium removed from solution • Combined Precious Metal Loadings of 5-7% • Negligible removal of base metals in the process Highly selective PM recovery Avoids laborious pH adjustment /precipitation Bulk scale operation High value cost saving Silanes – Pt Recovery • Highly Reactive Silane Streams • 60-100 ppm Platinum • Continuous Scavenging Process developed to recover Platinum Catalyst from waste solutions • >98% recovered Platinum • High refining return • Works on product and waste stream Previously unrecoverable stream USD 500k pa saving Silica survives contact with aggressive chemical Acid Streams – Pt/Au recovery • Strong Acid Aqueous Waste Streams (aqua regia, nitric acid containing Platinum and Gold) • Concentration ranges 20 – 2000 ppm • Greater than 98% Removal of Platinum / Gold • Slurry Batch mode / Room Temperature • Refiners routinely achieve 98-99% Platinum Recovery Avoids multiple pH adjustment/precipitations No sludge treatments Time and cost savings, lower refining charges Silica operates in highly acidic environment PhosphonicS™: Business Services Lab Testing and Analysis Identify Scavenger and Process Conditions Run Rig and Field Trials Design Full Scale Process Build and Supply Capital Equipment Supply and Package Scavenger Advise at Start-up and provide Training Ongoing Technical & Analytical Support Summary • PhosphonicSTM Precious Metal Recovery – high efficiency, high capacity materials for lower concentration PGM streams • PhosphonicSTM Precious Metal Recovery offers a simple and economic recovery solution, applied on site, simplifying transport of metal for efficient refining • PhosphonicSTM Precious Metal Recovery is being applied in variety of PGM recovery processes in chemical, industrial, mineral processing and mining
"PhosphonicSTM Precious Metal Recovery"