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US 4,243,425 AGranted
Method of refining the silicatic slag phase obtained in the thermal recovery of phosphorus from phosphates
AssigneeWessel-Werk GmbH
InventorWalter Kerstan
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Abstract
A method for the refining of the silicatic slag phase produced in the thermal recovery of phosphorus from phosphates, which method comprises treating the slag, in the form of finely granular solid material, with steam at a temperature between 600.degree. C. and the softening temperature of the slag.
Claims20
Method for the refining of the silicatic slag phase produced in the thermal recovery of phosphorus from phosphates, which method comprises treating the slag, in the form of finely granular solid material, with steam at a temperature between 600.degree. C. and the softening temperature of the slag.
Dependencies are inferred from the claim text.