Method for directly cooling fine-particle solid substances
AssigneeKerr-McGee Pigments International GmbH
InventorsGerhard Auer, Dirk Weber, Werner Schuy, Frank Wittekopf
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Abstract
The invention relates to a method for directly cooling fine-particle, powdery solid substances by using a cooling medium provided in the form of low-boiling condensed gases or of cold gases obtained therefrom, whereupon bulk material packings are subsequently filled with these solid substances. The invention also relates to a device for directly cooling the fine-particle, powdery solid substances and to fine-particle, powdery solid substances, which are located inside bulk material packings and which, compared to air, have a lower oxygen content in the gas phase between the solid substance particles.
Claims23
Method for directly cooling a fine-particle, powder-form solid substance of elevated temperature by means of introducing a cooling medium consisting of
- a) one or more different condensed gases having a low boiling point, or
- b) a cold gas or gas mixture, which was produced using one or more different condensed gases having a low boiling point, or
- c) a cold gas or gas mixture that was pre-cooled using one or more different condensed gases having a low boiling point, into the solid substance having an average particle size of less than 50 μm of an inorganic or organic pigment or of cement or of a solid coated with a temperature-sensitive compound, and subsequently filling the cooled solid substance into bulk material packaging or mobile bulk material containers.
Dependencies are inferred from the claim text.