Možnosti separace materiálových podílů z odpadních Li baterií a akumulátorů

Abstract

The bachelor thesis deals with the separation of material fractions from the waste electrode mass of Lithium ion batteries. After a theoretical review of battery composition and separation methods, a combination of annealing and subsequent wet magnetic separation was experimentally verified. The separation was performed by two methods, internal and external separation, to separate the mass into magnetic, non-magnetic and soluble fractions. The annealing changed the composition of the input electrode mass and thus ensured the possibility of this separation. The internal separation method provided a purer cobalt fraction with a lower mass yield, while the external separation provided a higher mass yield at the cost of very low purity. Separation of lithium into a soluble fraction appeared to be effective. The results show the feasibility of the method but also the need for further optimization.