Talk:Crystallization

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    		Please help improve this article or section by expanding it.
    Further information might be found on the talk page or at requests for expansion. (January 2007)

    crystallization process principle and operation

    Crystallization is more than just a wet chemistry technique. You or I should look through Special:Whatlinkshere/Crystallization Processes for the topics of interest, and expand the article into something more comprehensive.--Joel 18:07, 10 October 2005 (UTC)

    _ _ Second that, and add crystallization in nature. I've writ what i can without getting beyond my depth into crystalization of plutonic magma to form cubic-faced trap rock.
    --Jerzy•t 08:00, 18 December 2005 (UTC)

    Contents

    [edit] types of adultrations in crude drugs

    [edit] Revision of the article

    I might translate the article on crystallization I made for it.wiki, if this is of interest- in case, let me know here. I would need a colleague chemical engineer to revise my English, probably good but not perfect. UbUb 20:29, 4 April 2006 (UTC)

    Done. The new article is crystallizer.--UbUb 19:12, 24 June 2006 (UTC)

    [edit] Merging Crystallization and Crystallizer.

    I am not a user of en.wiki, so you may probably know better. But merging the articles is tantamount to merging car with engine.--UbUb 06:15, 27 June 2006 (UTC)

    I'd say no to merging currently. This short article has a focus on crystal chemistry in nature (mineralogy, petrology, meteorology ...) whereas the newly translated (good work UbUb!) crystallizer article focuses on chemical engineering applications. I think there is sufficient info available to significantly expand this article and keep that article with its current focus. --Vsmith 12:13, 27 June 2006 (UTC)

    I vote to "not merge". They treat different subjects (physics and engineering) and are for different publiques ("Crystallizer" is more technical). -- Krauss 29 July 2006 (UTC).

    See also:
    Crystal
    Crystal structure
    Crystallite
    Crystallization
    Crystal growth
    Fractional crystallization
    Recrystallization
    Seed crystal
    Single crystal
    and articles cited therein also!
    I suspect it would take a brave person to try and untangle/merge these articles !! -- Quantockgoblin 13:43, 23 January 2007 (UTC)

    [edit] What about Water and Steel?

    The article says that crystalization requires a supersaturated solution.

    But crystalization doesn't require a solution at all. If you freeze (nearly) pure water at the correct rate, it crystalizes. If you cool red-hot steel at the correct rate, it develops a crystaline structure. In fact, a lot of crystals are formed from conditions other than supersaturated solutions.

    Is there some other word for this, from a very technical perspective? Is some chemical engineer going to say "being crystaline or crystalization are two completely different things"? If so, then that should be clarified in this article, as well. And if not, then the article shouldn't say you must have a supersaturated solution to make crystals, only that it's ONE way to make them, and then should go on to talk about how and why crystals form when certain substances cool rapidly, et cetera.--Kaz 05:11, 17 July 2006 (UTC)

    Water freezes at triple point. IMHO, the austenitic structure of steel, for example, is more related to freezing than to crystallization (aren't we talking of solid solutions?), and freezing is an equal-ranking unit process as crystallization is. However, I confess I am not so informed about metallurgy. Interesting question, though. --UbUb 14:14, 27 August 2006 (UTC)

    [edit] Conceptual/didactic errors to correct?

    1. "Crystallization is the (natural or artificial) process of formation of solid crystals from a homogeneous solution". Errors (?):
      1. the "homogeneous pre-condition" is understable only for Chemical's... here on wikipedia we only find that "a solution is a homogeneous mixture of one or more substances (the solutes) dissolved in another substance (the solvent)" on mixture. Need define homogeneous solution. If it is "only 1 solvent and 1 solutes" solution, it is a error. We can mix salt and sugar into the water and growth little salt crystals. Molecules find your similars. — Krauss 29 July 2006 (UTC).
      2. "Crystalization doesn't require a solution at all" (Kaz)... yes, not very didactic ... on engineer models we aproximate the concept of solution, "a solid/liquid mixture"... more didactic can be good. — Krauss 29 July 2006 (UTC).

    wtf y merge?

    Shouldn't it be more general, simply "formation of solid crystals from a non-crystalline phase"? That would include solutions, molten material, amorphous solids..., but exclude recrystallization in the metallurgical or geophysical sense. --Anastasius zwerg 10:00, 8 October 2007 (UTC)