Sulfuric acid magnesium salt (1:1) → Calcium Sulfate
Reaction equation
[S:1]([O-:5])([O-:4])(=[O:3])=[O:2].[Mg+2:6].[OH-:7].[Ca+2:8].[OH-]>>[S:1]([O-:5])([O-:4])(=[O:3])=[O:2].[Ca+2:8].[OH-:7].[Mg+2:6].[OH-:2]Participants
4
Procedure
The aqueous solution of sulfates exits liquid-solid separator bank 18 by overflow line 40 and is fed into a thickener tank 42. After a residence time, the overflow medium from thickener tank 42 exits by line 44 and is passed to regeneration feed tank 46. Regeneration feed tank 46 is connected by in-line pump 48 to regeneration tank 36 through feed line 50. In regeneration tank 36 the soluble magnesium sulfate is reacted with calcium hydroxide, delivered to regeneration tank 36 from lime tank 52 by line 54, which results in the precipitation of calcium sulfate and magnesium hydroxide. Lime tank 52 is supplied by slaker 56.
Sources & evidence
- ORD record
- ord-3d2c52b98e874b349ca29f0b988d2bd5
- Source dataset
- uspto-grants-2000_03
- Patent number
- US06033577
Reaction notes
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