Treatment of the first cobalt sulfate/dithionate solution derived from a cobalt source

摘要

A method of removing and/or recycling water from a sodium sulfate and/or sodium dithionate-containing liquid derived from the treatment of a cobalt source material that is essentially free of lithium, wherein cobalt is a primary cobalt carbonate or primary cobalt hydroxide. Precipitating as a rockside and removing it from a liquor, crystallizing sodium sulfate and sodium dithionate, heating the crystal after removing the crystal to form anhydrous sodium sulfate, sulfur dioxide and water And then separating the anhydrous sodium sulfate.