Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Sodium sulfate decahydrate | HCID 62649 | — |
| Reactant | Sodium dithionate--water (2/1/2) | HCID 57346125 | — |
| Product | Sodium Sulfate | HCID 24436 | — |
| Product | Sodium dithionate--water (2/1/2) | HCID 57346125 | — |
Reaction Steps
The crystal products from the chilled crystallizer contain sodium sulphate decahydrate and sodium dithionate dihydrate. The sodium sulphate decahydrate can be dehydrated by heating at 74 the mixed crystals to about 40° C. to form anhydrous sodium sulphate and sodium dithionate dihydrate. The sodium sulphate and sodium dithionate dihydrate solids can be heated to 267° C. at 76 to convert sodium dithionate dihydrate to additional anhydrous sodium sulphate, sulphur dioxide and a small amount of water. The sulphur dioxide and water can be recycled to the leach system. The anhydrous sodium sulphate crystals can be sold as a byproduct.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US08460631B2 |
|---|
| Source dataset | uspto-grants-2013_06 |
|---|
| ORD ID | ord-3d43c223a43f4c5a88ccb8c4e92593b4 |
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| Source note | uspto-grants-2013_06 |
|---|
