The drying problem of nickel sulfate heptahydrate
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The nickel sulfate heptahydrate crystals that we used to dry with rotary dryers had a loose structure and a uniform appearance. After process modifications, belt vacuum dryers were employed to remove most of the water, followed by drying in tray dryers; however, the resulting crystals tended to clump together easily due to the lack of cooling. I was wondering if anyone has any good suggestions...
This post was last edited by huaguiyi on 2010-8-15 at 11:20. Modification process: Several layers of cooling trays are added below the original drying tray; cold air is used to cool the material as it comes out (cooling tray), after which the hot air coming from the outlet is heated to a certain temperature to dry the material (entering the drying tray). The air exiting the drying tray has cooled down and is then sent back to the cooling tray (in a cycle).
Thank you, big brother; I’ve learned a lot from you!
Thank you, big brother; I’ve learned a lot from you!
Add an additional cooling tray, but be careful to prevent dew formation