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MADE TO BE MADE AGAINCHEMISTRY FOR A CIRCULAR ECONOMY

Metals in a circular economy, Part

Lesson objectives:•!i"e reasons #or t$e

uses o# aluminium,titanium an% t$eiralloys&•E'(lain t$eim(ortance o#materials recovery&•)iscuss t$e limitations o#aluminium recyclingan% $o* (ro%uct%esi+n coul% e

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!at "o you t!in# t!is image means$

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Aluminium an" titanium

E%traction

Aluminium an% titanium e'ist in t$e eart$ asores&

Most aluminium e'ists as aluminium o'i%e inau'ite&

Most titanium e'ists as titanium %io'i%eo#ten in comination *it$ ot$er metals li-eiron .ilmenite/&

Unli-e iron, t$ey cannot e e'tracte% #romt$eir o'i%es y re%uction *it$ caron& &'NOT$

E'traction #rom t$e ores y electrolysis is

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Aluminium an" titanium

(ro)erties an" uses

Lo* %ensity 1 li+$t *ei+$t 1 so#t• Commonly use% as alloys to increase stren+t$

Corrosion resistant• A t$in layer o# o'i%e on t$e sur#ace sto(s

corrosion y H2O 3 O2 

Uses0•Aluminium0 aircra#t, trains, o"er$ea% (o*ercales, sauce(ans, coo-in+ #oil an% cans• Titanium0 #i+$ter aircra#t, arti#icial $i(

4oints an% (i(es in nuclear (o*er station

C a n  y o u  n a m e  a n o t h e r  a l l o y ? 

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Alloys

Aluminium commonly use% as an alloy o# 567 Almi'e% *it$ Si an% Fe

& o *  " o  t ! e  

i r o n  a n "  

s i l i c o n  a t o m s  

m a # e  a l u m i n i u m  s t r o n g e r $ 

Aluminium an" titanium

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Tas# +: Aluminium an" titanium

Aluminium Titanium

Name o# ore

Ho* it ise'tracte%

P$ysical(ro(erties

Uses

Com(lete t$e tale& Ho* muc$ can you rememer8

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Tas# +: Aluminium an" titanium

Aluminium Titanium

Name o# ore 9au'ite.aluminiumo'i%e/ .Al2O6/

Rutile .TiO2/

Ilmenite.FeTiO

6

/

Ho* it ise'tracte%

Electrolysis.many (rocesses, uses a lot o#ener+y/

P$ysical

(ro(erties

So#t, lo* %ensity, li+$t,corrosion resistant .use% asalloys/

Uses Aircra#t,trains,o"er$ea% (o*ercales,

Fi+$teraircra#t,arti#icial $i(4oints an% (i(es

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Tas# : T!e li-ecycle o- a can

Metals li-e aluminium can e "ie*e% as tec!nicalnutrients *$ic$ *e nee% to ma-e t$e (ro%ucts *euse& :e nee% to %esi+n out *aste so t$at t$enutrients are reco"ere%

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Tas# : T!e current li-ecycle o- a can

Or+anise your car%s aroun% t$e *$eel toillustrate t$e li#ecycle o# an aluminium can&

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Tas# : T!e current li-ecycle o- a can

En" o-li-e

Manu-acture

.se

/ecycle

E%tract

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Tas# 0: !y recycle$

Turn o"er your car%s& Sort t$em into t*o +rou(s to

e'(lain *$y recyclin+ aluminium is etter t$ane'tractin+ it #rom its ore&

Recyclin+ is a +oo% i%ea ut in a linear system itsim(ly slo*s %o*n t$e loss o# "aluale materials&

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Tas# 1

/ Loo- at t$e car%s #rom t$e (re"iouse'ercise&

2/ :$at *oul% $a"e to c$an+e to ma-ealuminium reco"ery *or- etter8

6/ :rite a letter to a (ac-a+in+ com(any%escriin+ t$e a%"anta+es to t$e

in%ustry o# a%o(tin+ clean;tec$nical< an% ;iolo+ical<materials #lo*s&

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2ui3 time: 4uestion +

& 9au'ite is an e'am(le o#=

A&An element

9&A com(oun%C&An ore

)&A solution

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2ui3 time: 4uestion

2& Aluminium is e'tracte% y=

A&Re%uction

9&)istillationC&T$ermal %ecom(osition

)&Comustion

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2ui3 time: 4uestion 0

6& Aluminium cannot e e'tracte% #rom aluminium o'i%eusin+ caron ecause=

A&Aluminium is more reacti"e t$an caron

9&T$e %ensity o# aluminium is too lo*

C&Caron is $i+$er in t$e reacti"ity series t$analuminium

)&Aluminium is co"ere% in a layer o# aluminium o'i%e

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2ui3 time: 4uestion 1

>& Aluminium is o#ten recycle%& :$ic$ ans*er.s/are true an% *$ic$ in%icate.s/ t$at aluminium(ro%uction is still essentially ;ta-e?ma-e?

%is(ose<A&Recyclin+ o# s$ort cycle (ro%ucts .cans,(ac-a+in+/ is al*ays *aste#ul e"en at $i+$recyclin+ rates&

9&:orl% aluminium (ro%uction #rom au'ite isincreasin+ year on year&

C&Recyclin+ re%uces t$e amount o# ener+y use% toma-e aluminium an% ma-es it c$ea(er t$ane'tractin+ #rom au'ite&

)&Recycle% aluminium is not suitale #or all uses

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&ome*or#

Coca?Cola is %e"elo(in+ a ottle calle%Plant9ottle as an alternati"e to aluminiumcans& It is currently ma%e #rom 6@7 (lantmaterial an% t$e com(any