Can overheated unsaturated saltwater contain salt crystals?
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I came across this sentence in an article on evaporation crystallization: A fluid is superheated unsaturated brine containing salt crystals. If it’s unsaturated, then why are there still crystals?
The saturation level is already very high, but there are still salt crystals that have not had time to dissolve. The keyword is fluid
How can there be a high saturation level when it’s unsaturated?
I can only understand it as being in the dissolution stage.
If there is no overheating, unsaturated solutions will not precipitate crystals. Could overheating have an impact, leading to the coexistence of unsaturated and crystalline states?
I can only guess about this; I’ll wait for the master’s guidance
This post was last edited by Grizzly on 2015-12-27 at 16:27. I also find it hard to understand – it’s both superheated and unsaturated; where could crystals come from? Is it thermally supersaturated? Because I think it was mentioned in Hua Yuan: a supersaturated liquid does not necessarily crystallize. It is also divided into a first metastable region and a second metastable region. The first metastable region is just after supersaturation; since there are no seed crystals, crystallization cannot occur. The second metastable region is beyond the first metastable region, but crystallization does not occur immediately.