It is possible to use classic pyrometallurgy processing to recover most of transition metals in the battery's electrode composition (Co, Ni, Cu, ...) but unlikely the Lithium or Aluminum which are generally getting burned since this process runs near a temperature of 1500 °C.
However, Chinese groups are using chemical leaching (less energy cost and running below 100 °C) to extract metals containing electrodes but the drawbacks of this method is the use of harmful solvents like strong acids (HCl, HNO3, H2SO4, ...) or hydrogen peroxide.
More highlights on this topic and the possible improve in LIBs recycling operations can be found in this recent article published by C&EN. It’s time to get serious about recycling lithium-ion batteries
Review on Hydrometallurgical Recycling of LIBs and other features :
Progress and Status of Hydrometallurgical and Direct Recycling of Li-Ion Batteries and Beyond
More highlights and recent progress towards All-solid-state LMBs (Li-Metal Batteries) :