Preparation method of energy-saving container aluminum foil with high secondary aluminum content

The invention discloses a preparation method of an energy-saving type container aluminum foil with high secondary aluminum content. The aluminum foil comprises the following components: 0.2 to 0.60 percent of Si, 1.20 to 1.60 percent of Fe, 0.01 to 0.05 percent of Cu, 0.4 to 0.8 percent of Mn, 0.01 to 0.05 percent of Mg, 0.01 to 0.05 percent of Zn, 0.015 to 0.035 percent of Ti and the balance of Al. The technological process comprises the steps of smelting, continuous casting and rolling, cold rolling and finished product annealing. According to the method, the proportion of the recycled aluminum waste used in the continuous casting and rolling process is increased from 10%-20% to 60%-80%, the energy consumption of an industrial chain is reduced, the pollutant discharge amount is reduced, the addition amount of alloying agents is reduced, the production cost is reduced, the green production effect is more obvious, the technological process is greatly shortened, the energy consumption is reduced, the pollutant