Process and apparatus for granulation of slag
AssigneePaul Wurth S.A.
InventorsGuido Monteyne, Marc Calmes, Robert Schmeler
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Abstract
A method and apparatus are presented for granulation of molten slag for determining the flow of molten slag and adjusting the supply of granulation water in accordance with the flow of molten slag.
Claims25
In a process for the liquid granulation of slag wherein molten slag from a vessel is caused to drop into a granulation enclosure into which at least two currents of water are injected and from which a slurry of granulated slag and water is evacuated, the steps of:
- determining the output of molten slag;
- keeping the flow rate of a first of said currents constant at a rate commesurate with requirements for granulation of a first amount of molten slag;
- and
- varying the flow rate of a second current of water automatically between zero or a predetermined minimum and a higher level in accordance with changes in the output of molten slag to maintain a volume of water flow sufficient for granulation of the slag.
In apparatus for the granulation of molten slag, comprising means for the generation of a plurality of water currents under pressure and for the projection of those currents against an approximately vertically falling flow of molten slag from a channel to a spout for the evacution of slag and water, the improvement comprising:
- current generating means for generating at least two of said currents of water;
- means for keeping the flow rate of a first of said currents constant at a rate commensurate with requirements for granulation of a first amount of molten slag, and
- means for varying the flow rate of a second current of water automatically between zero or a predetermined minimum and a higher level in accordance with changes in the output of molten slag to maintain volume of water flow sufficient for granulation of the slag.
In a process for the liquid granulation of slag wherein molten slag from a moving vessel is caused to drop into a granulation enclosure into which currents of water are injected and from which a slurry of granulated slag and water is evacuated, the steps of:
- determining the output of molten slag as a function of the power required to move the vessel;
- and
- varying the flow of at least one of said currents of water in accordance with changes in the output of molten slag.
Dependencies are inferred from the claim text.