Three iron removal methods of iron aluminum sulfate

At present, domestic and foreign are looking for an economical and effective method of removing iron, low iron-containing aluminum sulfate achieved without iron aluminum sulfate. Briefly in three ways:

1. Recrystallization.
2. Inorganic chemical products of iron precipitation.
3. Organic extraction method. Effective mainly the latter two methods. United States, Japan, dogs are used primary amine anion exchanger in addition to iron, there is also a tertiary amine or primary amine extraction of iron removal.

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