Slag granulation
AssigneeDavy McKee (Stockton) Limited
InventorsWilliam B. Featherstone, Derek Macauley
Life of this patent
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Abstract
A granulator comprises a rotary atomiser (1) on to which the molten material to be granulated is poured in a stream. The rotation of the atomiser (1) causes the molten material to be ejected therefrom in the form of globules. No fluid jets are used to break up the molten material. The globules pass through an enclosure (6) and partially freeze to form granules which are collected in an annular trough (10). A gas is injected into the trough (10) to induce a circumferential movement of the granules within the trough towards at least one exit from the trough (10).
Claims16
A granulator comprising an enclosure (6);
- a rotary atomiser (1) disposed within the enclosure;
- means (7) for delivering molten material to the atomiser so that, in use, the material is broken into globules without the use of fluid jets and the globules are dispersed within the enclosure;
- an annular open-topped trough (10) surrounding the atomiser to collect the granules formed from the at least partially frozen globules;
- and means (20, 21) for injecting gas into the trough to induce a circumferential movement of the granules in the trough towards at least one exit (22) from the trough.
A method of granulating a molten material, in which a stream of the molten material is delivered to a rotating atomiser disposed within an enclosure;
- the speed of rotation of the atomiser is such that the molten material is ejected from the atomiser in the form of globules without the use of fluid jets;
- the passage of the globules within the enclosure cause them to at least partially freeze to form granules;
- the granules are collected in an annular open-topped trough surrounding the atomiser;
- and gas is injected into the trough to induce a circumferential movement of the granules in the trough towards at least one exit from the trough.
Dependencies are inferred from the claim text.