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extracting aluminium

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Anu..i luv icse...:)
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PostSubject: extracting aluminium Tue Feb 10, 2009 7:17 pm

during the electrolysis of Alumina, what is the solvent used? Cryolite or Fluorspar?

In my textbook, fluorspar is given as the answer, but my teacher is saying it is cryolite

Can you plz tell me the functions/ role of the Fluorspar and Cryolite?

plzzz
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PostSubject: Re: extracting aluminium Tue Feb 10, 2009 7:34 pm

Afa I know bth are used
Suspect

Addition of cryo and flou (Short for flourspar and cryolite) Very Happy
lowers fusion point of the mixture ie. from 2050degree C to 950 deg C
Add. cryo enhances conductivity of the mixture
Add. cryo & flou enhances mobility of the fused mixture
Cryo in the molten state of subdivision dissolves alluminium oxide Cool
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ambili
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PostSubject: Re: extracting aluminium Tue Feb 10, 2009 8:20 pm

that's right bounce
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siya
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PostSubject: Re: extracting aluminium Tue Feb 10, 2009 9:48 pm

ya but in exams we need 2 b specific,if its asked wat is d solvent used wat we'll write???? confused
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PostSubject: Re: extracting aluminium Tue Feb 10, 2009 10:40 pm

so, consult with ur teachers and answer Very Happy
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Apurva
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PostSubject: Re: extracting aluminium Wed Feb 11, 2009 1:41 am

cryolite and fluorspar both are used
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PostSubject: Re: extracting aluminium Thu Feb 12, 2009 11:48 pm

no....i am asking about the solvent!!!

in electrolyte, both are used..

i will stick to my teacher's answer...

cryolite increases mobility of ions and fluo increases conductivity

read ur tbs properly guys
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Namit
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PostSubject: Re: extracting aluminium Thu Feb 12, 2009 11:54 pm

da mixture is used dear.. both r used as a solvent..
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PostSubject: Re: extracting aluminium Thu Feb 12, 2009 11:57 pm

solvent is the one which increases mobility.....so, its cryolite....k...i'll check the google tmrw and tell...n u check frm ur teacher.....
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PostSubject: Re: extracting aluminium Fri Feb 13, 2009 12:17 am

hey maine siya se b pucha.. vo toh intelligent hai na?? she says da same, a mixture is usd
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siya
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PostSubject: Re: extracting aluminium Fri Feb 13, 2009 2:07 am

hey!!!!!!!!! namit stop makin public announcements on my intelligence ok!Embarassed!!! n btw u r sayin as if u r not intelligent Suspect
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PostSubject: Re: extracting aluminium Fri Feb 13, 2009 2:04 pm

re tere amne i m nt intelligent at al.. u c.. u r at da highest.. nd v hav more than 6 % gap between our marx.. main kahan tikta tere samne..
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PostSubject: Re: extracting aluminium Wed Jan 13, 2010 7:58 pm

cyrolite, flourspar, ALF and BaF2 with coke sprinkled over the mixture to prevent the electrodes from burning
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