Talk:Hall–Héroult process

Talk: Hall-Héroult process

This section after the comment on Hydro-Electric power doesn't seem entirely NPOV, and probably should be under something like Hydro-Electric Power anyway:

" Hydroelectric power plants kill hundreds of thousands of fish each year, and do not allow the fish to swim upstream to spawn. This creates a chain reaction which eventually destroys the forests directly surrounding the river "

This article has been renamed as the result of a move request. violet/riga (t) 21:55, 26 Mar 2005 (UTC)

I believe it would be useful to include the electrochemical reactions that are involved in this process. Please correct me if I am wrong but I believe this should be as follows:
cathode: 4 Al³⁺ + 12 e¯ → 4 Al_(l)
anode: 6 O^2- → 3 O₂(g) + 12 e¯
net: 4 Al³⁺ + 6 O^2- → 4 Al_(l) + 3 O₂_(g)
Darkwraith (talk) 03:30, 22 February 2010 (UTC)[reply]

==Revisions October 2011-- I worked on this page after discovering how difficult it was to read. I only worked on one small section and for now have to leave the biggest and most confusing section to others..or a later date. In general I found that much of the information on the page is duplicated on pages aluminium and bauxite. The aluminium page I find very readable and recommend going over the Process section to make it more understandable. I'm a chemical engineer myself and found following along very difficult and don't think your average internet user would gain much understanding the way it is currently writen. Pbmaise (talk) 05:24, 5 October 2011 (UTC)[reply]

Updated External Link

I have updated the dead external link to the ACS National Historic Chemical Landmarks program. I am the program coordinator of the ACS-NHCL program. KLindblom (talk) 21:30, 21 February 2014 (UTC)[reply]

Inconsistency with Source, Other Pages

"Prior to the Hall–Héroult process, elemental aluminium was made by heating ore along with elemental sodium or potassium in a vacuum."

The citation in this section [3] describes two methods of producing aluminum. Neither of which mention using a vacuum. Neither process directly uses aluminum ore (although it could be argued that the second method uses ore indirectly). The two methods are:

Direct reaction of aluminum chloride with sodium metal at high temperature (as liquids/solids).
Aluminum chloride vapor produced in one vessel (possibly from ore), sodium vapor is produced in another, and then they are reacted while still vapors in a third vessel.

The first of those processes is also described in the wikipedia pages for "Aluminum" and "History of Aluminum", but neither of these have any reference to use of a vacuum. It is possible that this method is cited in another reference, but I cannot access most of them. It could be that the other methods occur in a vacuum but do not say and the use of "ore" is just referencing it as an overall feedstock (though that makes the overall process unclear). Or it could be a mistake. — Preceding unsigned comment added by Aaron Wallace (talk • contribs) 08:16, 14 October 2018 (UTC)[reply]

What element is this about again?

Notice my username.

The article spells the metal's name both in the American style ("aluminum") and the rest of the world's ("aluminium"). In my opinion, either is fine but a mixture of both is distracting. Since the main Wikipedia article uses "-ium" I think this one should, too. If nobody objects before I get back to this page I'll fix it up myself. IAmNitpicking (talk) 11:54, 25 January 2019 (UTC)[reply]

Ampere / it

Why this was reverted. Current content is antisemantic. The unit current density now is 300 'kA /it'.

the wikireason spell "Current irrelevant here" .

imo this is stupid ^^^ or to quicky — Preceding unsigned comment added by 99.90.196.227 (talk) 11:08, 26 March 2019 (UTC)[reply]

I see absolutely no relevant content in the reverted content; calling it 'antisemitic' is absurd. There's nothing to be antisemitic. Dstar3k (talk) 06:08, 21 February 2023 (UTC)[reply]

Punctuation

The punctuation mark between "Hall" and "Héroult" in the article title is incorrect; an n-dash (–) is used when instead a hyphen (-) should be used. I have updated all instances of this in the article body but do not have the necessary permissions to change the article title. — Preceding unsigned comment added by 24.5.153.186 (talk) 21:46, 8 October 2019 (UTC)[reply]

The endash is correct for Wikipedia's manual of style. WP:MOSDASH. Glrx (talk) 17:57, 31 October 2019 (UTC)[reply]

oxidation of elemental aluminum (/aluminium)

I believe this statement needs correction: "Elemental aluminium cannot be produced by the electrolysis of an aqueous aluminium salt, because hydronium ions readily oxidize elemental aluminium." True, elemental aluminium cannot be produced by electrolysis but it's hydroxy ions that readilyoxidize elemental aluminium, not hydronium ions. 98.47.234.40 (talk) 01:26, 10 September 2024 (UTC)[reply]