Coated calcium peroxide particles useful in the treatment of water
AssigneeInterox
InventorIgnace Gago
Life of this patent
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Abstract
Solid particles containing calcium peroxide and coated with a coating agent containing a water-insoluble solid compound having a melting point of at least 50.degree. C. The particles can be used in the treatment of water and make it possible to ensure sufficient oxygenation for very long periods.
Claims30
Solid particles comprising calcium peroxide, and a coating agent coating the calcium peroxide, said coating agent being predominantly a water-insoluble solid compound which is an organic polymer or an inorganic compound, said water-insoluble solid compound having a solubility in water of less than 1% by weight and a melting point of at least 50.degree. C.
Process for the production of solid particles in a medium containing, the solid particles comprising calcium peroxide and a coating agent coating the calcium peroxide, said coating agent being predominantly a water insoluble solid compound having a solubility in water of less than 1% by weight and a melting point of at least 50.degree. C., comprising spraying a solution, emulsion or suspension of a composition forming the coating agent in a liquid medium onto moving calcium peroxide granules, and evaporating the liquid medium.
Process for the oxygenation of water, comprising treating each m.sup.3 of water with 0.05 to 1,000 g of solid particles comprising calcium peroxide and a coating agent coating the calcium peroxide, said coating agent being predominantly a water insoluble solid compound having a solubility in water of less than 1% by weight and a melting point of at least 50.degree. C.
Dependencies are inferred from the claim text.