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US 10,618,112 B2Granted
Granulation of molten material
AssigneeUvan Holding AB
InventorPer-Ake Lundstrom
Life of this patent
Estimating the term…
Abstract
A granulated material having an improved size distribution and a method and apparatus for the production of such a granular material where the grain size and grain size distribution is controlled by the use of a rotating distributor. The rotating distributor includes an upper inlet opening, sidewalls, a bottom and at least one row of openings at the lower end of the sidewalls. The openings in the sidewalls have a size of at least 5 mm in the smallest dimension.
Claims9
An apparatus for producing a granulated material having a mean size of at least 5 mm by disintegrating a liquid metal, the apparatus comprising:
- a cooling tank filled with a cooling liquid to a liquid level,
- a rotating distributor positioned above the cooling tank,
- a controller to maintain a rotation of the rotating distributor within a range of 1-50 rpm,
- a feeder feeding the liquid metal to the rotating distributor,
- a regulator to adjust a flow of the liquid metal from the feeder to the rotating distributor, and
- an extractor to remove the granulated material from the cooling tank,
- wherein the rotating distributor comprises an upper inlet opening, sidewalls, a bottom and at least one row of openings at a lower end of the sidewalls, the at least one row of openings having a size of at least 5 mm in the smallest dimension,
- wherein the granulated material comprises fines, and
- wherein an amount of the fines with a size of less than 6 mm is limited to 5%.
6 more elements
Dependencies are inferred from the claim text.