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metallurgy

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aishrastogi3
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aishrastogi3


metallurgy Vide
PostSubject: metallurgy metallurgy EmptyFri Dec 19, 2008 12:33 am
how can we extract zinc frm calmine
(give the process)
tell me if it's not in the sylbs
cause it's there in the bak ques bt not in
the chap!!! help!!!.... Neutral
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ronak sumbaly569




metallurgy Vide
PostSubject: Re: metallurgy metallurgy EmptyMon Feb 02, 2009 2:10 pm
calamine:ZnCO3
ZnCo3----calcination 400 C--- Zno +co2
ZnO + CO---1400 C---- Zn(Spelter)+ Co2
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