The proposed research project aims at technology for environmentally benign recycling of nickel. The process entails conversion of nickel found in the "black mass" from recycled Ni-based batteries into nickel carbonyl, Ni(CO)4, by reaction with CO at modest temperatures around 50-120°C (pressuredependent). Only nickel carbonyl is volatile under these conditions and is easily separated from other metals and residual materials found in the "black mass". Downstream, the nickel tetracarbonyl vaporsare introduced into a high-temperature zone (ca.

The proposed research project aims at technology for environmentally benign recycling of nickel. Theprocess entails conversion of nickel found in the “black mass” from recycled Ni-based batteries intonickel carbonyl, Ni(CO)4, by reaction with CO at modest temperatures around 50-120°C (pressuredependent).Only nickel carbonyl is volatile under these conditions and is easily separated from othermetals and residual materials found in the “black mass”. Downstream, the nickel tetracarbonyl vaporsare introduced into a high-temperature zone (ca.