Precious Metal Recycling Articles

  • Is it time to recycle more nickel?

    Now you might think me a little sad, but I have to confess that as a metallurgist, I always find it interesting just how closely the history of mankind is linked to advances in metal working. The first evidence of metal working in Europe dates from around 5500 BC with the extraction of copper, lead and precious metals and this was followed by the working of bronze from around 4000 BC, both of ...

  • Editorial: Going For Gold

    Production of August BioCycle overlaps with the Summer Olympic games in Rio. Watching athletes from around the world put themselves out there in hopes of winning the gold is inspiring, sometimes breathtaking. The rigor of training, the intensity of competition, the dedication and discipline — are there parallels to our world of organics recycling? First there is the obvious. Retail compost ...


    By BioCycle Magazine

  • PGMs market expectations

    HIGHER SUPPLY OFFSET BY STRONG CATALYTIC CONVERTERS DEMAND Platinum Group Metals (PGMs) prices will peak this year. According to experts, the demand of PGMs is likely to exceed the production this year. As a result, the precious metals are expected to record deficits in ...


    By Ecotrade Group

  • Assessment of nanofiltration and reverse osmosis potentialities to recover metals, sulfuric acid, and recycled water from acid gold mining effluent

    This work assessed the potential of nanofiltration (NF) and reverse osmosis (RO) to treat acid streams contaminated with metals, such as effluent from the pressure oxidation process (POX) used in refractory gold ore processing. NF and RO were evaluated in terms of rejections of sulfuric acid and metals. Regarding NF, high sulfuric acid permeation (∼100%), was observed, while metals were ...


    By IWA Publishing

  • Shredding of end-of-life tyres (ELTs): a ´black gold mine´ ready for being exploited

    “Problems can't be solved by using the same kind of thinking we used when we created them" (Albert Einstein). The 2014 report by the ETRMA (European Tyre and Rubber Manufactures’ Association Sustainable Development Foundation) shows that only considering consumer, light truck, truck, motorcycle and agriculture tyres, in 2012 Germany, UK, France, Italy and Spain had been able ...


    By SatrindTech Srl

  • BlueOak - Precious metal recovery from electronics waste - Case Study

    The Challenge In the US, consumers alone dispose of some 3.2 million tonnes of e-waste annually; more than 80% of this ends up as waste, contributing >70% of all toxic metals in U.S. landfills. In a bid to tackle this wastage, BlueOak Resources. USA announced in July 2014 that they had selected Tetronics' technology for their national project to sustainably recover precious ...

  • Platinum group metal recovery from spent catalysts case study

    The Challenge Catalyst wastes, including automotive catalytic converters and industrial catalysts, contain Precious Metals and specifically Platinum Group Metals (PGMs), which are valuable as a result of their low natural abundance, unique properties as well as the complex and costly processes that are required for their extraction and refining from primary sources. Furuya Metal Co. Ltd., ...

  • Duncan recyling & refining - Precious metal recovery from spent catalysts case study

    The Challenge Spent catalysts contain Precious Metals, specifically the Platinum Group Metals (PGMs) that are valuable as a result of their low natural abundance, unique properties as well as the complex and costly processes that are required for their extraction/refining from primary sources. Duncan Refining and Recycling's (DR2) President, David Nichols, made the decision to ...

  • WEEE – aren’t materials too precious to lose?

    Chris Oldfield, managing director of UNTHA UK, was interviewed by leading journal MRW magazine recently, on the subject of WEEE. Drawing upon his specialist industry insight he commented on the methodology used to process WEEE and the extent to which the sector needs to go ‘back to basics’ to ensure precious materials are not lost. Conversation surrounding recyclate quality has ...


    By UNTHA UK LTD

  • Supporting best in class performance case study

    Challenge: A precious metals refiner retained Antea Group to evaluate and improve their EHS programs with the end goal of achieving best in class EHS performance among the industry as a way to differentiate itself and create additional business opportunity.   As their current New Jersey industrial facility with deteriorating infrastructure was recognized as a significant ...


    By Antea Group - USA

  • Reducing Mercury Impacts in Small-Scale Gold Mining

    Despite knowing full well the dangers of mercury, millions of small-scale gold miners across the globe continue to use the metal to separate gold from ore - usually because they have little other choice. The mercury is mixed into ore and combines with the gold in a compound that can easily be scooped out and squeezed into a small bar of amalgam. This is then burned so that the mercury evaporates, ...

  • Treatment of iron(II)-rich acid mine water with limestone and oxygen

    The main components of acid mine water are free acid, sulphate, and Fe2+. Limestone is the most cost-effective alkali that can be used for neutralization. The purpose of this investigation was to identify conditions where Fe2+ is removed with limestone and simultaneously oxidized with oxygen to Fe3+, in a polyvinyl chloride pipe under pressure. Gypsum ...


    By IWA Publishing

  • Evaluation of chitosan flakes as adsorbent for palladium and platinum recovery from binary dilute solutions

    In the recent years, special attention has been paid to the competitive recovery or separation of metals from industrial wastewaters or solid wastes that contain more than one chemical component. Platinum group metals (PGMs), particularly palladium and platinum, are used together in many fields such as industrial catalyst production. The recovery of these metals from industrial waste streams has ...


    By Inderscience Publishers

  • Johnson Matthey - Case Study

    Johnson Matthey is a specialty chemicals company focused on its core skills in catalysts, precious metals and specialty chemicals. Johnson Matthey uses a number of different Intelex systems for its various business management endeavours. Challenge Wanted to become TS 16949 certified in a timely manner . Wanted to work with a solutions-focused company to ...


    By Intelex Technologies Inc.

  • The limits to growth and 'finite' mineral resources: re–visiting the assumptions and drinking from that half–capacity glass

    The famous 1972 study 'Limits to growth' (LtG) created global controversy about its dire predictions for the 21st century - e.g., global population crash, rampant pollution and resource depletion. Amongst some of the most fervent critics was the mining industry, who argued that mineral-metals are easily recyclable, that exploration and new technology can increase known resources, and that price ...


    By Inderscience Publishers

  • Recycling copper requires torque and shredding teeth

    Copper has been recycled ever since ancient times. It is said that the Colossus of Rhodes was made of copper, but unfortunately it was recycled and used to make other copper objects. However, it was easier for the ancient recyclers to re-use copper– you could just melt it. These days, recycling copper is much more complicated, as the precious metal is often encased in plastics or other ...


    By Tana Oy

  • Used to Useful

    Thanks to Mother Earth for giving us millions of tons of natural resources for our need & greed. After extraction & converting these resources in to products for our requirement, we forget to pay attention to recycle the used products but continue to extract afresh as if, nature has no right to say no. In the process, we attract natural calamities (natural recycling) to balance the ...


    By Eco Recycling Ltd

  • Miami marlins daseball park, Miami, FL(LEED Silver Project ) case study

    Project Name: Miami Marlins Baseball Park Products: Grasspave2 Permeable Pavement Applications: Grass Porous Parking Lots City: Miami State/Province: Florida Install Date: January-March 2012 Install Size: 7240 m2 (77,930 sq ft) Address: 1390 ...


    By Invisible Structures, Inc.

  • A direct method for ultrafine gold networks with nanometre scale ligaments

    Preparation of precious metals into porous structures in nanoscale regime is currently only achieved by dealloying processes, in which a second or third component is leached out of matrices of metal alloys. To avoid loss and hassle of recovery of leached precious metals, direct synthetic methods should be developed. In this work, we report our chemical synthesis of ultrafine gold networks through ...


    By Inderscience Publishers

  • Mining Plant Machines Used Mineral Solution And Recycling Plant

    Mining Plant Machines Used Mineral Solution And Recycling Plant Quarry & Mining in SBM Gold Mining Plant in SBM is used for crushing & milling project in Chile construction & quarry & mining processing. The series ...


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