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metallurgy

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aishrastogi3
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PostSubject: metallurgy Fri 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




PostSubject: Re: metallurgy Mon 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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metallurgy

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Complete IIT AIEEE ICSE ISC PMT help forum :: Chemistry :: Chemistry help forum-