Processes for the preparation of acid fortified paramagnetic iron sulfate salt compounds for use in the treatment of agricultural soils
OwnerHarold W. Wilsoninventor
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Abstract
The formation of paramagnetic iron sulfate hydrate salts containing iron in the di- and trivalent states from black magnetic iron oxides of high iron content and their use as fertilizers effective on both acid and alkaline soils is disclosed. Such oxides are comminuted, wetted with a specified amount of water, reacted with concentrated sulfuric acid, and dried. The resultant products are paramagnetic and contain iron in both the di- and trivalent states. These products have fertilizing and soil conditioning properties superior to non-magnetic iron compounds containing iron only in either the di- or trivalent state.
Claims12
A process for making paramagnetic iron sulfate soil fertilizing and soil improving products comprising the steps:
- mixing water with ferromagnetic iron oxides of at least 60% Fe content in a comminuted state,
- incrementally adding concentrated sulfuric acid to the mixture to control heating of the mixture of sulfuric acid and wetted ferromagnetic iron oxides to a temperature to form paramagnetic iron sulfate hydrate salt containing iron in the di- and trivalent states and allowing the reaction to proceed for a period of time sufficient for formation of said salt, and
- collecting the paramagnetic iron sulfate hydrate salt containing iron in the di- and trivalent states.
Dependencies are inferred from the claim text.