Sodium Sulfate → Sulfur Dioxide
Reaction equation
[S:1]([O-:5])([O-:4])(=[O:3])=[O:2].[Na+:6].[Na+].O.[S:9](S([O-])(=O)=O)([O-])(=[O:11])=[O:10].[Na+].[Na+].S(S([O-])(=O)=O)([O-])(=O)=O.[Na+].[Na+]>O>[S:1]([O-:5])([O-:4])(=[O:3])=[O:2].[Na+:6].[Na+:6].[S:9](=[O:11])=[O:10]Participants
Reactant 3
Product 2
Reagents, catalysts & solvents 1
Procedure
Accordingly, disclosed herein is a process for hydrometallurgical processing of manganese sulphate and manganese dithionate containing liquors and recovery of water therefrom, comprises the steps of: deriving sodium sulphate and/or sodium dithionate containing liquors from manganese sulphate and manganese dithionate containing liquids; crystallizing sodium sulphate decahydrate and sodium dithionate dehydrate by cooling sodium sulphate/sodium dithionate containing liquor with or without a vacuum; heating the sodium sulphate decahydrate and sodium dithionate dehydrate crystals to a temperature sufficient to decompose the sodium sulphate decahydrate crystals to form anhydrous sodium sulphate crystals, sodium dithionate hydrate crystals and water; removing water from the sodium sulphate and sodium dithionate hydrate crystals; heating the sodium sulphate and sodium dithionate dehydrate crystals to form anhydrous sodium sulphate, sulfur dioxide and water or steam; and separating the anhydrous sodium sulphate from the sulfur dioxide and water.
Sources & evidence
- ORD record
- ord-8f3d6c3d23284b7bbd2979b931d4eca6
- Source dataset
- uspto-grants-2013_06
- Patent number
- US08460631B2
Reaction notes
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