METHOD OF PREPARING AN ARTICLE CONSISTING OF SEVERAL DIFFERENT COMPONENTS,IN PARTICULAR OF RECOVERY OF METAL PARTS FROM WIRE SCRAP

摘要

1378922 Ball mills; comminuting at low temperatures KLOCKNER-HUMBOLDT-DEUTZ AG 14 Jan 1972 [15 Jan 1971] 1922/72 Heading B2A [Also in Division C7] A thermally-insulated, continuously-operating, tubular ball mill is used for stripping insulation from cable waste. In operation, the waste is fed to the tube-mill containing, e.g. liquid nitrogen, and the insulation is embrittled and then reduced in size by the grinding elements of the mill, making or suitable for separation from the metal components by screening or air blast sorting.