Method of comminuting fertilizer slugs in a two-roll mill
AssigneeMaschinenfabrik Koppern GmbH & Co. KG
InventorsEggert DE WELDIGE, Felix HEINICKE, Marcel PFIEFER, Agnes WINTER-PIETRUCK
Life of this patent
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Abstract
The invention relates to a method for comminuting fertiliser slugs or slug pieces in a two-roll mill (3) in the course of producing granular fertiliser material, wherein the two-roll mill (3) has two rotatingly driven grinding rolls, the roll surfaces of which are provided with a profiling, wherein the slug or slug pieces is/are placed on the two-roll mill (3) and comminuted into granular material in the roll nip formed between the grinding rolls, wherein the grinding rolls rotate at a circumferential speed of more than 5 m/s. This e method is characterised in that the surfaces of the grinding rolls are cooled during operation.
Claims18
A method of comminuting fertilizer flake or flake particles in a two-roller mill when making fertilizer granules, where
- the two-roller mill comprises two rotationally driven grinding rollers having respective outer surfaces provided with profilings,
- the flake or flake particles are fed to the two-roller mill and granules are comminuted in the nip formed between the grinding rollers,
- the grinding rollers rotate at a peripheral speed or with peripheral speeds of more than 5 m/s, and
- the outer surfaces of the grinding rollers are cooled during operation.
Dependencies are inferred from the claim text.