| 摘要 |
Described is a process for producing hepta-hydrated ferrous sulfate and a calcium chloride solution from pickled residue liquors containing ferrous chloride, hydrochloric acid and water, which consists in: treating the pickled residue solution with a lime slurry within an agitated reactor so that the ferrous chloride is transformed into ferrous hydroxide and a calcium chloride solution which are separated by filtration. The ferrous hydroxide is treated within an agitated reactor which includes a cooling jacket for transforming the ferrous hydroxide into hepta-hydrated ferrous sulfate.
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