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Author: Subject: zincdust
Nerro
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[*] posted on 12-4-2005 at 08:08


Maybe ZnO can be turned into Zn By converting it to ZnCl2 with hydrochloric acid and then adding Al foil to the solution.. The zinc should precipitate as the Al goes into the solution. A good stir should keep it from forming sheets and give you a nice fine powder. I recently saw a website somewhere that showed this exact reaction. I seemed to work quite nicely. As soon as I get my hands on some Zn or ZnO I'll try this :)



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[*] posted on 13-4-2005 at 03:17
dust


why not use zncl ; bakers soldering fluid is 10% in water you can get it anywhere.
and then percipertate out the zn with a more electropositive metal
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chemoleo
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[*] posted on 13-4-2005 at 16:43


Did you read the thread? Organikum seemed successful at making Zn from ZnCl2 and Al ! :o



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[*] posted on 13-4-2005 at 17:05


are the pics gone? - the pic of the zinc metal from the reaction was nice
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[*] posted on 20-4-2005 at 06:19
Theoretical production of zinc?


I was wondering today, how to make zinc, and I came up with this...

2NaOH + ZnSO<sub>4</sub> = Na<sub>2</sub>SO<sub>4</sub> + Zn(OH)<sub>2</sub>
Na<sub>2</sub>SO<sub>4</sub> + Zn(OH)<sub>2</sub> (temp)----> Na<sub>2</sub>SO<sub>4</sub> + ZnO + H<sub>2</sub>O
ZnO + 2HCl = ZnCl<sub>2</sub> + H<sub>2</sub>O
2Al + 3ZnCl<sub>2</sub> = 2AlCl<sub>3</sub> +3Zn

EDIT: Balanced o.o
I wanted to ask you, is this possible for the contents to react differently?

[Edited on 20-4-2005 by Ashendale]

[Edited on 20-4-2005 by Ashendale]




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[*] posted on 20-4-2005 at 06:24


This was already discussed on the zincdust thread, except for the first couple of steps in the procedure. Instead of NaOH I would prefer using sodium carbonate (to produce the carbonate and some hydroxide), since being less basic than the hydroxide it reduces the conversion of Zn(OH)2 to the zincate ion [Zn(OH)4]2-, and therefore prevents to a certain extent the 'wastage' of zinc and/or annoying drop-by-drop addition of the sodium hydroxide. The second step is useless. You can react either the hydroxide or the carbonate (if you decided to use Na2CO3) with HCl directly. No need for that reaction, which frankly I don't think occurs or else you would need extremely high temperatures. Hope this helps.

[Edited on 20-4-2005 by Esplosivo]




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cyclonite4
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[*] posted on 20-4-2005 at 06:50


Not to mention you didn't even bother to balance the equations. :)



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Ashendale
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[*] posted on 20-4-2005 at 08:28


I know it was discussed, yet I tried to think another way of doing it. No need to bash me..

Quote:
The second step is useless. You can react either the hydroxide or the carbonate (if you decided to use Na2CO3) with HCl directly.


Second step: Na<sub>2</sub>SO<sub>4</sub> + Zn(OH)<sub>2</sub> (temp)----> Na<sub>2</sub>SO<sub>4</sub> + ZnO + H<sub>2</sub>O

HCl? Where's HCl?

As for the balancing, I usually never balance anything I write, unless needed. Stupid habbit? Maybe.

[Edited on 20-4-2005 by Ashendale]




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Esplosivo
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[*] posted on 20-4-2005 at 09:01


First of, I didn't bash you. Take it easy :)

Secondly, I meant that your second step is not necessary. You could instead react the Zn(OH)2 from the first reaction with HCl. Is it clear now?




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Ashendale
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[*] posted on 20-4-2005 at 10:44


Ahh, guess I was thinking the longer the fancier. :P
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[*] posted on 24-4-2005 at 02:16


About CaC2 + ZnO reaction.... It doesn't work at all... Maybe at Super-Mega High temperatures. Powdered CaC2(VERY HARDLY) mixed with ZnO. Added to steel "baker" and tried firstly to ignite by match(hahahah) - no success. Then tried with Black Powder with +10% Al powder. No success. Another try was Fe2O3 + Al. And Guess what ? Made little hole in center and putted 100g(!!!!!!!!!) thermite. On top thermite was 20g Al/S. Thermite ignited ,but no success igniting CaC2/ZnO. This mix is tottal bullshit. Maybe in some furnace or there is tricky thing that I don't know .... Don't even try to ignite that CaC2/ZnO mixture ....
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