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US 2025/0145490 A1Published application
Method of producing iron(ii) sulfate heptahydrate
OwnerAlexander KEHRMANNinventor
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Abstract
In a method of producing iron(II) sulfate heptahydrate, a material containing iron oxide is subjected to a pre-processing treatment to adjust the particle size and/or the water content thereof. The pre-processed raw materials are then reacted with sulfuric acid, followed by a reduction treatment with elementary iron to produce iron(II) sulfate. The iron(II) sulfate may be purified and crystallized as iron(II) sulfate monohydrate prior to crystallization as iron (II) sulfate heptahydrate
Claims21
A method of producing iron(II) sulfate heptahydrate, the method comprising the following steps, in the cited order:
- Step 1:
- pre-processing a material containing iron oxide to adjust the particle size and/or the water content thereof, Step 2:
- reacting the pre-processed material with sulfuric acid, followed by reduction treatment with elementary iron to produce iron(II) sulfate, and
- Step 3:
- crystallizing the iron(II) sulfate as iron(II) sulfate heptahydrate.
2 more elements
-11. (canceled)
Dependencies are inferred from the claim text.