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The biofuel cell made by Annemiek Ter Heijne can be used to retrieve copper from wastewater. This would increase yields, and more importantly, reduce the amount of cupper that comes into large rivers/lakes from the mine. See http://pubs.acs.org/doi/abs/10.1021/es100526g , http://www.wur.nl/uk/newsagenda/archive/news/2010/Biofuel_cell_retrieves_copper.htm

add to article KVDP (talk) 13:30, 21 March 2011 (UTC) http://pubs.acs.org/doi/abs/10.1021/es100526g[reply]

I chanced across this article when looking for an explanation of "blister copper" in Wikipedia. It has some problems. For a start, the comment that it is about historical extraction techniques doesn't seem to accord with the content.

Secondly, the heading "Blister copper extraction" is kind of meaningless. Blister copper is a step along the route to the production of copper metal that precedes fire refining. I changed the title to "Sulfide smelting".

Froth flotation is probably better separated from smelting, as it can be a precursor to leaching as well.

I don't have time at the moment, but I will get back to this page at some time in the future and fix the major issues.

By way of explanation, I worked in copper smelters for almost 20 years and have a modicum of understanding of the processes used.ChrisFountain (talk) 07:05, 25 June 2013 (UTC)[reply]

Source gave only "4515" BC as a carbon-date, not 7250 BC as claimed in this article -- and NEITHER date is linked by the authors to the copper-production era of this site (they discuss findings in several eras, or "stages" within the same location); copper ITSELF cannot be carbon-dated, anyway (contrary to how a WP editor had (misre-)presented the claim of 7,250 BC, which was an unreferenced claim, as well), and so copper items need to be linked (by a credible scientific source) to contextual evidence, such as carbon life, within the SAME ARCHAEOLOGICAL LAYER as the copper items in question.

Serbian site (Plocnik): The only source has a title which denotes uncertain (NOT "secure") dating: "Serbian site MAY HAVE hosted first...". But then it contradicts itself by claiming "secure dating" a few lines down; source is a science journalist rather than an actual scientist (archaeologist), raising issues of WP:RS, etc, when combined with his self-contradiction, and getting a Primary Source (archaeologist) hopefully will help to clear up exactly how certain the actual scientific expert is, regarding his own dating. 72.183.52.92 (talk) 02:56, 10 February 2016 (UTC)[reply]

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This article was the subject of a Wiki Education Foundation-supported course assignment, between 13 January 2023 and 15 April 2023. Further details are available on the course page. Student editor(s): User5843 (article contribs). Peer reviewers: RockySurfaces, Hylaversicolor.

— Assignment last updated by ChloejWard (talk) 03:40, 15 April 2023 (UTC)[reply]

I have drafted a copy of a newly improved part of the specialized ores section for this article. This entailed changing some of the sentences in the section to match current research. I also added citations to the section since there currently are none. I will be moving the draft into the main article momentarily and it should be available to view within the hour. I would greatly appreciate any feedback that may further improve this section. User5843 (talk) 00:12, 11 March 2023 (UTC)[reply]

I have also added another sentence describing new techniques tailored to processing low-grade ores. User5843 (talk) 02:11, 13 April 2023 (UTC)[reply]

It seems from the above comment that @User5843 has added info about new techniques thus changing the scope of the article to broaden it from just historical techniques.

I think that was a good move therefore I am excerpting ISASMELT to this article. Chidgk1 (talk) 07:36, 18 December 2023 (UTC)[reply]