Tetronics (International) Limited

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  • Revisited: Why we should be recycling more nickel

    Revisited: Why we should be recycling more nickel

    Dr Tim Johnson has revisited his nickel blog for CIWM magazine Earlier this year we released a blog that explained why we should be recycling more nickel. The blog was written by Dr Tim Johnson and proved to be very popular in the wider metallurgy ...

  • How can lead be so crucial, but also so toxic?

    How can lead be so crucial, but also so toxic?

    Why is everyone talking about lead? Not long ago, like so many historic buildings in the UK, a local parish church near to where I live had the lead stolen from its roof.  Sadly, this is not so unusual and all the more distressing in this ...

  • Keeping APCr out of Landfill

    Keeping APCr out of Landfill

    The CIWM have recently featured an article by our very own Dr David Deegan in the latest edition of their magazine. The article explains why Tetronics International were unhappy to be informed recently that Defra ministers had taken the decision not ...

  • Tetronics: Meet our engineering apprentices

    Tetronics: Meet our engineering apprentices

    My time at Tetronics International by Connor Meyrick (Engineering Apprentice, Tetronics International) A great company to work for I have been working at Tetronics as part of my electrical and mechanical engineering apprenticeship for nearly two ...

  • Treatment and Disposal of Air Pollution Control Residue

    Treatment and Disposal of Air Pollution Control Residue

    What is APCr? Thermal waste management using Energy Recovery Facilities (ERFs) is now a well-managed and mature technology that is subject to environmental monitoring by a range of competent international bodies. These ERFs have been established as ...

    David Deegan

  • Is it time to recycle more nickel?

    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 ...

    Tim Johnson;Lesley Vernon

  • Nuclear Waste: Greatest environmental challenge facing society

    Nuclear Waste: Greatest environmental challenge facing society

    Dr Tim Johnson discusses how we can tackle the nuclear waste epidemic. A world full of waste They say you can tell a lot about a society by what it throws away. Like me, I’m sure you can recall the excitement of archaeologists on numerous TV ...

  • Let’s talk plasma

    Let’s talk plasma

    Usually when I attend a conference on behalf of Tetronics I am about the average age of the other delegates. Not this time. Suddenly, I am old enough to be the father of most of the other people here, because this is a university-based conference ...

    Tim Johnson

  • Fly Ash Treatment – Plasma Torches versus Graphite Electrodes

    Fly Ash Treatment – Plasma Torches versus Graphite Electrodes

    Background Plasma generating devices have to be designed to tolerate incredibly harsh conditions during operation and in particular very high heat loads and temperatures around the arc. However, when used in the vitrification of highly chlorinated ...

  • 25 Years of Success – Outokumpu Stainless DC Plasma Smelting Facility

    25 Years of Success – Outokumpu Stainless DC Plasma Smelting Facility

    Design is not just what is looks and feels like. Design is how it works. Between 1982 and 1987, British Steel (Outokumpu today) made extensive investigations into the treatment of steel dust. Their research was far and wide and covered off many ...

  • A chance to drive hazardous waste policy

    A chance to drive hazardous waste policy

    The proliferation of energy-from-waste (EfW) power plants is making a significant contribution to the UK’s efforts to end its reliance on harmful fossil fuels. But while EfW plants provide a solution to municipal waste, they also produce a low ...

    Graeme Rumbol

  • Mitsubishi corporation - Spent Potliner (SPL) hazardous waste treatment - Case Study

    Mitsubishi corporation - Spent Potliner (SPL) hazardous waste treatment - Case Study

    The Challenge Spent Potliner (SPL) is generated in the primary production of aluminium and worldwide is estimated to rise at a rate of over 500,000 tonnes per year. The SPL waste contains concentrations of cyanide and fluoride and gives off noxious ...

  • Platinum group metal recovery from spent catalysts - Case Study

    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 ...

  • Duncan recyling & refining - Precious metal recovery from spent catalysts - Case Study

    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 ...

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

    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 ...

  • Recovery of Ruthenium and Other PGMs from Spent Petrochemical Catalysts - Case Study

    Recovery of Ruthenium and Other PGMs from Spent Petrochemical Catalysts - Case Study

    The recovery of platinum group metals from spent petrochemical catalysts has economic benefits by the protection of the supply chain of these valuable and rare metals, thereby helping to create a sustainable value chain in the petrochemical industry ...

    Peter Keeley;Tim Johnson

  • Time to address the air pollution control residue problem

    Time to address the air pollution control residue problem

    The incineration of municipal solid waste is gaining increasing importance in the UK, especially as the burning of waste can be used to generate energy, providing a more sustainable solution to our waste problem by diverting it from landfill sites. ...

  • We Created the Technosphere, but is it the Birth Place of the Circular Economy

    We Created the Technosphere, but is it the Birth Place of the Circular Economy

    Human activity has created the ‘technosphere’, a landscape which is composed of the materials we have developed, created and thrown away. Far from being a miserable landscape that may initially come to mind, like the desolate garbage ...

  • Electronic Waste: The Rich Resource in the Urban Mine

    Electronic Waste: The Rich Resource in the Urban Mine

    Forgetting your mobile phone can be a real pain, playing on your mind during the day. Then as you think you can feel your phone vibrating in your pocket and you come to realise how dependent we are on our gadgets. Electrical equipment has changed ...

  • CIWM Feature: Plasma Power - Dr Deegan gives a flavour of what plasma technology can offer

    CIWM Feature: Plasma Power - Dr Deegan gives a flavour of what plasma technology can offer

    Sustainability… what does this mean? It is often a term that means many different things to different people and organisations based on their perspective. When examined in detail, the definition is quite complex, something that Chartered ...

    David Deegan