parallel session recycling: thierry van kerckhoven, umicore, international recycling cooperation
TRANSCRIPT
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International recycling cooperation based upon EU experience
The viewpoint of a recycler
E-waste
collaboration
Ghana -
Netherlands
The Hague
Thierry
Van Kerckhoven
November 2, 2010
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Workshop Ghana –
Netherlands
E-waste collaboration
“Modern” electronics
The e-scrap recycling chain
E-scrap end-processing at Umicore Precious Metals Refining
What to do in Ghana?
Conclusions
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Modern electronics make use of ~ 50% of elements from periodic table => a big consumer of natural resources
•
Precious & special metals → „technology metals“, crucial for functionality•
Key components: circuit boards, batteries, LCD screens
Mobile phone
composition
mobile phone
substance
(Quelle Nokia)
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with
a huge
impact on
resource demand.
% used
in EEE* Main
application(s) By-product
from
• Indium: 80% LCD glass
Zn, Pb• Ruthenium: > 80% hard disks
PGM• Antimony:
~ 50% flame
retardants
(Cu, Pb, Zn)• Tin:
~ 35%
solder• Copper:
30%
cables, wires, e-motors• Silver:
30%
contacts, solder, MLCC
(Pb, Zn)• Cobalt:
20%
rechargable
batteries
(Ni, Cu)• Selenium:
~ 20%
electro-optics
Cu• Palladium:
~ 15%
MLCC, connectors
PGM’s• Gold
~ 10%
bonding wire, contacts, IC
(Cu)
* rounded
based
on
2006 sales
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As metals production is coupled
…
supply of many “technology metals” is price-inelastic:
•
Increased demand can only be met by primary production if demand for major metal rises accordingly
•
Short term demand surges lead to price peaks (see Ir, Ru, In)
⇒ Recycling = important for supply security
C. Hagelüken, C.E.M. Meskers: Complex lifecycles
of precious
and special metals
in Linkages
of Sustainability. Strüngmann
Forum Report vol. 4. T. Graedel, E. van der Voet (eds.) Cambridge, MA, MIT Press 2009.
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and “Substitution”
is not
as easy as you
may
think
Example: Opto-electric
applications
E.g. Substituting scarce Germanium by scarce Indium ?
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and considering the CO2
impact of primary metal production is huge …
Cu
Co
Au
Pt
In
Sn
Ag
Pd
Ru
t CO2
/ t primary metal
source: ecoinvent 2.0, EMPA/ETH-Zürich, 2007
10 000
200
10
0
≈
≈
CO2 impact of secondary metal production is much lower for majority of metals => incentive to stimulate recycling
Why that high? E.g. Au, South Africa
∅
5 g/t, 3000m underground
Example: 70.000 tons
of metals
produced
by
Umicore Hoboken in 2007 = 1 million
tons
of CO2
savings
vs
primary
metal
production
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the time is there
for
a fundamental change
in the recycling approach
!
•
Vision
burden opportunitynew business models to increase collection
•
Attitude
waste management resource managementcomprehensive collection plus stop of dubious “waste” exports
•
Objective
focus on mass focus on quality and specific substances
system approach and prioritisation
•
Practice
traditional business high-tech recyclingrecycling is a clean future technology so adapt structures accordingly
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Workshop Ghana –
Netherlands
E-waste collaboration
“Modern” electronics Directive
The e-scrap recycling chain
E-scrap end-processing at Umicore Precious Metals Refining
What to do in Ghana?
Conclusions
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recycled metals/ elementscollection pre-
processing
dis-
mantling
materials
recovery
e-scrap
separated components & fractionshandling of final wasteillegal export?
•
Total efficiency
is determined
by the weakest step•
No collection
means no
material into the recycling
chain•
Consider the entire chain and its interdependencies => no or limited precious metals recovery out of aluminium/steel/plastics fractions => watch out for inadequate pre-processing technologies
•
Optimization
of pre-processing processes and interface
with materials recovery is crucial to minimize resource losses
Overall efficiency -Example: 50% x 90% x 80% x 95% = 34%*
*effective recovery rate for e.g. Au, Cu etc.
Recycling chain
-
system approach is key
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However spot the difference -
Mass materials recycling doesn‘t fit for complex e-scrap
•
mono-substance
materials without hazards•
rather simple composition•
focus
on mass recycling
& high throughput•
trace elements remain part of alloys/glass
Source
DSD
Bottle glass: different colours & some paper, but all is SiO2
Steel scrap: various alloys with some impurities but bulk is Fe
•
poly-substance materials, incl. hazardous elements•
complex
components as part of complex products •
recycling focus
on value recovery
from trace elements•
Key are precious metal yield
& environm. performance•
Bulk materials (plastics, glass, steel, …) of little value.
PC circuit boards & mobile phones: ~ 50 substances in a highly complex inter-connected structure
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Optimise process chain interfaces
Study Reference Process description Input
St 1 Chancerel & Rotter 2008 Manual pre-processing 176 kg of IT & consumer eq.
St 4 Meskers et al. 2009 Low intensity mechanical pre-processing 1.4 tons of PC
St 5 Chancerel et al. 2009 High intensity mechanical pre-processing 27 tons of IT & consumer eq.St 6 Van Schaik & Reuter 2009 High intensity mechanical pre-processing Not indicated
Rotter et al. Elektronik Ecodesign Congress München (Oct.2009)
Choice of e-scrap pre-processing technology => strong impact on e.g. Au recovery rates
0102030405060708090
100
St 1 St 4 St 5 St 6
Gol
d re
cove
ry in
circ
uit b
oard
frac
tion
afte
r pre
-pro
cess
ing
[%] Au-loss 75% !
Remove high grade circuit boards prior to intense shredding
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backyard recycling ► “low tech”
foto: EMPA/CH
Au yield
≈
25%
integrated metals smelting/refining ►“high tech”
Umicore
Au yield
>> 95%
+ high PM yields+ special & base metals recovered+ elimination of hazardous substances+ high environmental standard
−
High losses, few metals recovered only dramatic environment & health impacts
−
Typical for most Asian & African countries
End-processors (“Recyclers”) –
Two approaches
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How
does the recycling chain
often
look like
in reality in e.g. non-OECD-countries?
Or
a gold recycling efficiency of: 95 % x 50 % x 25 % = 12 %*But
are we doing
much
better
in “the West”?
Gold recycling efficiency of: 50 % x 25 % x 95 % = 12 %** Illustrative
figures
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How
should/could
the recycling chain
look like
in non-OECD-countries?
NO PLEAD FOR EXPORT OF WESTERN WEEE TO DEVELOPING COUNTRIES !!!
Or
a gold recycling efficiency of: 95 % x 90 % x 95 % = 81 %*
* Illustrative
figures
What
is needed
to
achieve
this
result?• Maximum & organized
collection, with
adequate presorting
of various
types of WEEE
• Focused
dismantling
(=> training is needed
!)
• Best available
end-processing
technology
(=> best environmental
performance often
goes
hand in hand with
best recycling performance)
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Workshop Ghana –
Netherlands
E-waste collaboration
“Modern” electronics
The e-scrap recycling chain
E-scrap end-processing at Umicore Precious Metals Refining
What to do in Ghana?
Conclusions
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What can modern integrated smelters-refiners offer ? The Umicore-case:
©
Umicore
Maximize recycling of many (critical/scarce) metals*
Whilst using
the interconnected organics
in WEEE-fractions as
reducing agent
/ energy source
And limiting waste streams / emissions
to an absolute
minimum
* Umicore Hoboken: 18 metals
+ Create value
for critical fractions. E.g. PC-boards + EUR 5/kg net paid to suppliers
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E-scrap: Umicore’s focus material E-scrap is a complex mix of:
Ag, Au, Pd… (precious metals)Cu, Al, Ni, Sn, Zn, Fe… (base metals)Hg, Be, Pb, Cd, As, Sb, Bi… (PIA metals)Br, F, Cl... (halogens)plastics (combustibles)
e-scrap contains valuable metals & resources & as such represents a true surface mine, which must not be wastedsustainable processing in environmentally sound and robust operations
PS: via Umicore Battery Recycling, we also offer recycling solutions for rechargeable batteries (NiMH-, Li-ion, Li-polymer)
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Precious Metals Refinery
Leaching & Electro Winning
Smelter
Sampling
Raw Materials
Cu-bullion
PM-residue
Precious Metals Operations
Sulphuric Acid
Nickel Refinery
Blast Furnace
Base Metals Operations
Lead Refinery
Special Metals Refinery
Pb-bullion
In-Te-residue
Ag, Au, Pt, Pd, Rh, Ir, Ru In, Se, TeNi
SO2
Cu Pb, Bi, Sb, Sn, As
Slags
Se-
residue
Pb-slags
Cu-matte
Ni-speiss
PM-
residue
H2
SO4
Ag-
residue
Flow-sheet Umicore Precious Metals Refining
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Workshop Ghana –
Netherlands
E-waste collaboration
“Modern” electronics
The e-scrap recycling chain
E-scrap end-processing at Umicore Precious Metals Refining
What to do in Ghana?
Conclusions
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What to do in Ghana? Recommendations Umicore
• Create legislative framework
that promotes/facilitatescollection & recycling
• Focus
on e-waste streams
for which recycling yields the highest environmental/financial benefits
+ adapt
the recycling chainaccording to the product category => do not adopt the samemass focused approach as in the EU-industry !
• Assure organized collection first
before thinking of next steps => If no collection =>
no recycling
• Include informal sector
instead of excluding them + make use of their strengths
(collection, pre-processing, …)
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What to do in Ghana? Recommendations Umicore
• Maximize
the use of manual dismantling
and minimize mechanical pre-processing
:
=> The more complex/interlinked the material, the less selective mechanical separation processes + the higher the losses of precious metals
by co-segregation
=> Establish intermediate collection hubs
before shipping critical / precious metal bearing fractions to e.g. Umicore
Umicore and its partners can assist you in optimizing manual dismantling
=> Do not underestimate the job creation
potential of (WEEE)-recycling (especially in collection and pre-
processing) => Recycling
as a means to fight against poverty
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What to do in Ghana? Is there a need for a precious metals smelter/refiner in Ghana?
• End-processing
is crucial
for final value generation & toxic control
• Recycling trace elements from complex products needs “high-tech”, large scale processes
which cannot be duplicated in any country
(=> need for economies of scale).
•
End-processing technology/capacity available in Europe
(Umicore):
•
Is more than sufficient
to serve the entire African e-scrap market•
Can return more metals / more money
than local refining solutions can•
Guarantees best environmental performance
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Workshop Ghana –
Netherlands
E-waste collaboration
“Modern” electronics
The e-scrap recycling chain
E-scrap end-processing at Umicore Precious Metals Refining
What to do in Ghana?
Conclusions
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Conclusions
Consider recycling chain as a complex, interlinked-chainwithout collection, no recyclingcollection / pre-processing should be adapted to type of material
Use strengths of Ghanaian recycling society:incorporate informal sector where appropriateuse manual labour to do focused disassemblylimit mechanical pre-processing (“shredding”) to an absolute minimum
WEEE has to be seen as an opportunity – also in respect to
job creation -
not as a burden
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Conclusions
Aim at maximizing quality of output streams => keep precious metals together in their original fraction (circuit board, mobile phone, …)
For smelting/refining of complex (precious) metal bearing fractions, make use of best available technology
+ do not trust the “we can do all at the cheapest price”-companies
Umicore can be a reliable, globally-active long-term partner to process your precious metal bearing fractions
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Thank
you
for your attention
contact: [email protected]@umicore.comchristian.hagelueken@eu.umicore.comwww.electronicscrap.umicore.com