Abstract
Aiming at the research and develop of high sulfur bauxite, the salt discharge experiment in sodium aluminate seeded precipitation mother liquor had been studied. The results proved that, in the evaporation process, Na2Ok concentration should be controlled in 300-320g/l to prevent Al (OH)3 from precipitation. The additive amount of Na2SO4 had a great influence on the precipitate of Na2CO3, Na2SO4 and Al (OH)3. The precipitation rate increased with the increasing of Na2SO4 content. All things considered, salt discharge effect was better when Ns was 4.5~5g/l.
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