Important role of melt-treatment for liquid Al and theory on high efficient melt-treatment as well as key techniques were expounded.Furthermore

effects of melt-treatment techniques such as high efficient purification

modification of impurity-phase containing Fe-rich and grain refinement on the Al melt quality and interrelation among these treatment techniques were approached.The principle of melt-treatment that purification is a key process of Al melt treatment and base of refinement and modification is presented.Based on the principle

high efficient melt-treatment techniques were developed to be applied to the preparation of Al sheets for the can with high performance

which can significantly improve the mechanical properties of the Al sheets

especially the ductility

due to the great improvement of melting quality of the Al sheets

helpful for the sequent rolling and performance of the finished product.