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US 4,374,645 AGranted
Process for granulation of slag
AssigneePaul Wurth S.A.
InventorGuido Monteyne
Life of this patent
Estimating the term…
Abstract
The granulation of molten material, blast furnace slag for example, is accomplished by wetting the slag with a stream of water and thereafter transporting the thus formed granules away from the point of granulation with the water stream. Water consumption is minimized and average grain size increased by employing a multi-layer water stream defined by currents having different temperatures and pressures.
Claims11
In a process for the granulation of molten slag, the molten slag being wet by a stream of liquid to cause solidification of the molten slag in the form of granules which are transported by the stream, the improvement comprising:
- establishing a stream of liquid having at least first and second liquid current components of different pressures and temperatures commensurate with different functions to be performed, the pressure and temperature of said first current component being higher than the pressure and temperature of said second current component;
- causing a flow of molten slag to be intercepted and wet by said first liquid current component at the higher temperature and higher pressure of said first liquid current component, said first liquid current component primarily serving to effect the granulation of said molten slag;
- and
- entraining the granulated slag in said second liquid current component, said second liquid current component being at the lower temperature and pressure of said second liquid current component, to transport the slag to a desired destination;
- the temperature and pressure of said first liquid current component being commensurate with requirements for granulation of the slag and the temperature and pressure of said second liquid current component being commensurate with requirements for transporting the slag.
2 more elements
Dependencies are inferred from the claim text.