Production method of cyclic preservation 5-series unscrewing cap material

The invention relates to a production method of a cyclic preservation 5-series unscrewing cover material, which belongs to the field of metal package processing in the aluminum processing industry, and comprises the following steps: step 1, adding 5-series unscrewing cover waste into a waste treatment system for melting; 2, according to the detected chemical component result, an element remover is used; thirdly, molten aluminum liquid is transferred into a smelting furnace; 4, proportioning the chemical components of the smelting furnace according to a 5-series unscrewing cover; 5, qualified molten aluminum is transferred into a heat preservation furnace to be refined; sixthly, online deslagging, degassing, filtering treatment and large slab ingot casting are conducted; 7, milling the surface of the large slab ingot; 8, homogenizing the large slab ingot; step 9, hot rolling; step 10, cold rolling; and eleventhly, finishing and warehousing are conducted. According to the method, the waste unscrewing materials