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Precipitation Vs. Crystallization


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#1 Jiggly_puff


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Posted 28 October 2013 - 02:28 AM

We are somewhat confused regarding on the difference on process of precipitation from the process of crystallization in industrial companies. Can you please help us?

#2 mohtogh


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Posted 15 November 2013 - 11:38 PM

Precipitation means converting the dissolved material to suspended material. Crystallization is the same thing with a goal of having specific particle size in precipitated material.

#3 curious_cat


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Posted 16 November 2013 - 12:43 AM

Normally for precipitation a precipitating reagent is added. Often it is a chemical reaction. Sometimes a physical agglomeration process. The precipitate may not be necessarily crystalline but can be. 


Crystallization usually employs a solubility effect. By cooling or evaporating off solvent a solute is forced to come out of solution. It is usually a relatively slow process if crystal morphology / size is important. 

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