Subclass 2/24: Processes or devices for granulating materials, in general (granulating metals B22F 9/00, slag C04B 5/02, ores or scrap C22B 1/14; mechanical aspects of working of plastics or substances in a plastic state to make granules B29B 9/00; processes for granulating fertilisers characterised by their chemical constitution, see the relevant groups in C05B-C05G; chemical aspects of powdering or granulating of macromolecular substances C08J 3/12); Rendering particulate materials free flowing in general, e.g. making them hydrophobic Obtaining flakes by scraping a solid layer from a surface