Production of alkali metal or alkaline earth metal peroxides
AssigneeInterox Chemicals Limited
InventorsDouglas P. Haughey, Malcolm H. Millar
Life of this patent
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Abstract
Alkali metal or alkaline earth metal peroxides, for example, particularly, calcium peroxide, are produced by recovering a moist peroxide product from an aqueous mixture, formed by reacting hydrogen peroxide and a hydroxide or oxide of the alkali metal or alkaline earth metal, and drying the moist product by means of a pneumatic conveyer drier. The peroxide so produced is suitable for granulation. Alternatively, particulate substances, such as seed, are coated with the peroxide by blending with the moist peroxide product and passing the blend through the pneumatic conveyer drier.
Claims12
A process for the preparation of an alkali metal or an alkaline earth metal peroxide comprising reacting hydrogen peroxide and a hydroxide or oxide of the alkali metal or alkaline earth metal in an aqueous medium, separating the peroxide from the aqueous medium in the form of a moist peroxide product, and drying the moist peroxide product by means of a direct fired pneumatic conveyor drier, said moist peroxide having a moisture content of from 10% to 45% by weight, and said drier being operated at an air inlet temperature of at least 150.degree. C.
Dependencies are inferred from the claim text.