Find out more about Tetronics International and what we do.

1. Tetronics International
DC Arc Plasma Technology

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Our Company
Our Vision
To enable a thriving planet for future
generations, while making it financially beneficial
for companies, shareholders and governments to
make responsible choices for the environment
and for generations to come.
Our Mission
Offering economically stable and viable methods
of recovering resources from waste. Using our
industry-leading technology and experience to
deliver maximum resource recovery and the
highest levels of hazardous material destruction.
UK environmental company with 50 years’ global
experience delivering clean plasma technology
for maximum resource recovery and the highest
levels of hazardous material destruction.
Our Technology
Developed, enhanced and
continually refined over 50 years
with 109 patents, granted or
pending across 12 families
Widely recognised as World
Leaders in Plasma
Tailored solutions for Resource
Recovery and Hazardous Material
Treatment
Technically and Economically
proven with an impressive track
record
Global Service Provision
Tailored Support
World Class Plasma Materials
Testing Facility in UK

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Tetronics Background
Market leader in the application of DC Plasma Arc technology on a global basis
Established 1964 in Oxfordshire, UK with a R&D focus
Acquisition by InvestSelect in 2004 triggered significant investment, move to
new bespoke facilities at Marston Gate and strategic repositioning of the
company into new areas of application
Comprehensive and sophisticated R&D trial facilities
Advanced Plasma Power (APP) formed 2005/2006
Mature technology platform with a securely protected IP that continues to be
developed
109 patents granted or pending across 12 families
Experienced process design, engineering and manufacturing staff
complemented by project management, commercial and environmental
regulatory expertise
90+ installations globally

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Partners/Customers
Strategic Partnerships
• Harsco Corporation
• Mitsubishi Corporation
Customer and Plasma Operations
BASF
Solar Applied Materials Technology Corporation
Furuya Metal
Harsco Metals and Minerals
Mitsubishi Heavy Industries
Hitachi Zosen Corporation
Outokumpu Steel Company
POSCO Steel Company

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Electronics Waste -
Spent Catalysts -
Mining Waste -
Steel Plant Waste -
- Air Pollution Control Residue
- Nuclear
- Petrochemical
- Asbestos
- Spent Potliner
- Organics (PCB’s & Dioxins)
Application Summary

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Plasma: an ionised gas often referred to as the 4th state of matter
Examples of plasma: lightening, auroras, stars & sun - plasmas constitute more than 99% of
the universe
Thermal plasma emits intense heat and Ultra Violet light
Formed when a gas (e.g. nitrogen) is heated to >7,000K by an electric current
Plasma cracks/reforms all organic matter and melts or vitrifies inorganic matter into an
inert rock (Plasmarok®) with properties superior to granite
Plasma treatment is a recovery process – not disposal
What is Plasma?

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Why Choose Plasma?
Proximal solution-offering quicker turnaround
Flexible operational profile
Robust, reliable and easy to maintain technology
Small physical foot-print and no unusual building requirements - readily
retrofitable to existing plants
Low environment impacts – sustainable recovery
Lowest capital and operation cost at ‘small’ operational scales
Tolerance of feed compositional variations

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Plasmarok® – From Waste to Product
Plasmarok® an Environment Agency approved product
Use - Can be used for a range of applications (e.g. aggregate)
Suitability - Mechanically stronger than natural alternatives such as basalt
and granite
Safety - Non hazardous and extremely resistant to leaching
Leachability – leaching test results (BS EN 12457-3) for Plasmarok® from
autocat and a chemical catalyst are well below waste acceptance criteria
(WAC) for inert landfill in EU
mg/kg As Cd Mo Ni Sb
WAC Limit for Inert Landfill 0.500 0.0400 0.50 0.40 0.060
Chemical Catalyst Slag 0.005 0.0005 0.12 0.03 0.006
Autocatalyst Slag <0.014 <0.0030 <0.05 <0.05 0.031

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OVERVIEW OF TETRONICS’
GLOBAL REFERENCES

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Global Customer Reference Map

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European Customer Reference Map

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Asia Customer Reference Map
North Asia Customer Reference Map

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North America Customer Reference Map

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South America Customer reference Map

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PLASMA RECOVERY OF
PRECIOUS METALS

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Platinum Group Metal Recovery Process

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THE TECHNOLOGY - The PM Recovery Furnace
Plasmarok®
Anode
Refractory
Slag Overflow Spout
Carbon Hearth
Precessing,
Adjustable
Arc Length Plasma
Plasmarok®
Robotic Manipulator
Feed Port
Anode
Cathode Torch
Collector metal
Layer
Metal Tap Hole
A single facility of its type processes circa 2,000 tonnes of autocat per year.
The PGM recovery system delivers excellent technical and commercial yields.

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Example Waste Stream: Autocatalyst
Average PGM content is typically £50 on current market prices, but can be in excess of £200 on the high value
autocats.
The value is in the washcoat, impregnated into the ceramic honeycomb.

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Carbon Impact - Energy Use & CO2 Emission for
PGM Smelting
Plasma smelting leads to
significantly reduced energy
use and greenhouse gas
(GHG) emission compared
with conventional PGM
smelting used in primary
extraction.
0
10,000
20,000
30,000
40,000
50,000
60,000
kWh/kg PGM kg CO2/kg PGM
Smelting used in Primary Extraction
Plasma Smelting Process

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Tetronics PM Track Record
Client ID Location
Date
Commissioned
Capacity
tpy autocat*
MultiMetco No 1 USA 1982 6000
MultiMetco No 2 USA >1982 3723
Heesung / BASF No 1
South
Korea
2005 930
Heesung / BASF No 2
South
Korea
2007 1850
PPUK UK 2007 1850
Solar Taiwan 2012 1850
Furuya Metals Japan 2013 800
Chinese Client China 2013 1850
South Korean Client
South
Korea
2014 2790
German Client Germany 2014 1850
* Figures based on quoted specification at 85% annual availability processing autocat

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Next Generation – Metal Recovery from E-Waste
Segregation
(manual picking, disassembly)
Separation
(crushing, sensing, sorting)
Incineration
(optional)
Smelting
(submerged arc, plasma)
Refining
(hydrometallurgical, electrolysis)
Plastics, bulk metals
Heating value
Precious metals
Aggregate

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Plasma Smelting - Process Description
Formulation & Blending
Feeding
Plasma Furnace
Off Gas Cleaning
Plasmarok®
Plasma Power
Metal Bullion
Catalyst, WEEE, etc.
Collector
metal, flux
Stack emissions

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PLASMA RECOVERY OF
BASE METALS & EAF DUST
PROCESSING

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Process Schematic for Steel Dust Processing

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Plant Layout
Note: building is circa 25 x 40 m and height to apex is circa 20 m

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Operational Plant Reference 1 - Harsco
Ownership = JV between Harsco and the Steel Mill Operator
Operator = Harsco
Year of start up = 1991
Location = Terni, Italy (within the ThyssenKrupp Steel Mill)
Specified Working Capacity = 20,000 tpa mixed waste
Waste = EAF/AOD dust and mill scale / cuttings
Operational Status = active
Power rating = 7 MW at 20,000 Amps
Technical recovery rates, and associate operating parameter, are altered
based on changes in commodity and utility prices/costs
It is estimated that since 1991 almost $190 million of value has been
realised from stainless steel dusts, scales and other material

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Harsco Terni, Italy

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AIR POLLUTION CONTROL RESIDUES
(APCR)

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APCR Treatment Process

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Air Pollution Control Residue (APCR) Treatment
Provides close to a near zero waste solution in
the treatment of a hazardous waste stream
Technology demonstrated and proven
Vitrification of the inorganic fraction to recover
a dense environmentally stable slag Plasmarok®
Commercial plants operational in Japan for
mixed IBA/Fly ash
HCl recovered as a product

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Benefits of Using Tetronics Plasma Technology
Proximal solution, offering quicker turnaround
Small physical foot-print and no unusual building requirements
Flexible operational profile-short start-up times from cold
Robust, proven technology and easy to maintain
Low environment impacts-helping meet corporate CSR targets
Lowest capital and operation cost at ‘small’ operational scales
Wide feedstock flexibility/turndown
Versatile with multiple industrial applications
Readily retrofitable to existing plants
Provides a future proof solution for managing risk

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Why Choose Tetronics
Credibility of our reference plant and experience
Superior technical performance of our technology
Simple and robust process
Breath and scope of our Intellectual Property (IP) – global patents
combined with an in-depth technical competence
Low environmental impact
Near zero waste solution
Sustainable resource recovery solution

34. Marston Gate
South Marston Park
Stirling Road
Swindon SN3 4DE
Tel : +44 (0)1793 238500
Thank you
sales@tetronics.com