Sodium Sulfate → Sulfur Dioxide

Participants

Reaction Steps

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.

Provenance & Evidence